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Author Topic: Building Cheap Miners : My "Secret"  (Read 55432 times)
greyday
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March 01, 2018, 03:28:26 AM
 #561

I've built a small miner myself too, without spending a whole fortune to do so. I'm using two AMD R7 260X (Overclocked from the factory) which I bought, used, for dirty cheap from Ebay (Something like $50-60 each). They don't feature high-end performance like the R9 Or Titan series but they have low power consumption (100-110 Watts on full load each). Therefore, having a high performance to power ratio.

I'm considering to purchase a few more of these in the future, depending on how well the GPU mining "industry" goes.

Thats not low power consumption lol at least not in 2018.

Agreed. My 1060s run at around 75W each, and my 1070s run 95-105...
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March 01, 2018, 02:43:03 PM
 #562

I've built a small miner myself too, without spending a whole fortune to do so. I'm using two AMD R7 260X (Overclocked from the factory) which I bought, used, for dirty cheap from Ebay (Something like $50-60 each). They don't feature high-end performance like the R9 Or Titan series but they have low power consumption (100-110 Watts on full load each). Therefore, having a high performance to power ratio.

I'm considering to purchase a few more of these in the future, depending on how well the GPU mining "industry" goes.

Thats not low power consumption lol at least not in 2018.

Agreed. My 1060s run at around 75W each, and my 1070s run 95-105...

boy i really gotta get around to learning how to mod my bios, my 4 rx580 rig is using like 700w  Cry
greyday
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March 01, 2018, 05:46:48 PM
 #563

I've built a small miner myself too, without spending a whole fortune to do so. I'm using two AMD R7 260X (Overclocked from the factory) which I bought, used, for dirty cheap from Ebay (Something like $50-60 each). They don't feature high-end performance like the R9 Or Titan series but they have low power consumption (100-110 Watts on full load each). Therefore, having a high performance to power ratio.

I'm considering to purchase a few more of these in the future, depending on how well the GPU mining "industry" goes.

Thats not low power consumption lol at least not in 2018.

Agreed. My 1060s run at around 75W each, and my 1070s run 95-105...

boy i really gotta get around to learning how to mod my bios, my 4 rx580 rig is using like 700w  Cry

I use ethOS, so I do all my setting adjustments in the config files. But 580s run hot anyway, I can't get mine down below around 115 or so...
ManicMiner23
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March 04, 2018, 06:27:50 AM
Last edit: March 04, 2018, 07:40:44 AM by ManicMiner23
 #564

Hi All.

I was following this thread since some time ago, why? I've started to mine using z400 workstations. The system have a strange behavior. I have a rig with 3x 1070 gtx, mining eth using claymore dual, I know, maybe there are more profitable options, but, eth algo on nvidia cards allows to reduce power consumption, heat and noise, and for me this is a key point also.

The strange behavior is that when I boot up the system and I start to mine using claymore miner, at the beggining, for some hours, between 12 and 24 hours the system seems to be faster than the "estimated hashrate" in +15 +20% this happened lot of times, after some hours the system performance goes down, and starts to makes peaks and valleys.

I've tested conservative oc for the memory, just +400 to discard this is a problem of the oc settings, I've tested in two different z400 workstations, with different risers, and the behavior is always the same. The gpu's are all the time under 60ºC, so I don`t think is a temp problem.

At this point I have no clue about where can be the problem. so any help would be appreciated.

I know there's something called luck, but I've seen this behavior lot of times, so is not somthing that happens radomly.

Thanks in advance.

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March 04, 2018, 09:32:16 PM
 #565

My 5th mining rack of PCs is nearly done... and soon will have two racks (24 systems) of the Dell servers running.

Probably will be another week to get the last 12 of the Dell systems going... and then starting on my 6th rack of PCs... I have enough GPUs to do close to 75% of the 6th rack.

any update man?  Wink

Been going slower than I had hoped... been very busy with my main business.

But the 5th rack of GPU rigs is 100% done and the 2nd rack of Dell servers is 50% done.

I am starting on the 6th rack of GPU rigs tomorrow.




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March 05, 2018, 12:16:53 AM
 #566


I have one of the DELL Servers rolling... getting ~2100 H/S out of the box first try.

Using ~675 watts or so.

What config are you using? I finally got setup today and am only getting 1500 h/s from the Dell server on Ubuntu 16 and XMR-STAK-CPU

This is my config :

"cpu_threads_conf" :
[
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 0 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 1 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 2 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 3 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 4 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 5 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 6 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 8 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 9 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 10 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 11 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 12 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 13 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 14 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 16 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 17 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 18 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 19 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 20 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 21 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 22 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 24 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 25 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 26 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 27 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 28 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 29 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 30 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 32 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 33 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 34 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 35 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 36 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 37 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 38 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 40 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 41 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 42 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 43 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 44 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 45 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 46 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 48 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 49 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 50 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 51 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 52 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 53 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 54 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 56 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 57 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 58 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 59 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 60 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 61 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 62 },

],

In your initial post #475 you stated "servers are loaded with 4x 12-Core AMD Opteron 6300 series CPUs each".
https://bitcointalk.org/index.php?topic=1955358.msg29265925#msg29265925

That would imply that a maximum of 48 cores. Since the above is showing 63 cores being used that would mean that the CPUs must be 16-Core Opterons.
http://www.cpu-world.com/CPUs/Bulldozer/TYPE-Opteron%206300%20series.html

I am confused in the above XMR-STAK settings. XMR-STAK tuning states that for optimal settings that each thread uses 2MB of cache.

The 16-Core Opterons have 16MB L2 Cache and 16MB L3 Cache.

So 8 threads fit into the 16MB L2 and/or 16MB L3 Cache.

I have a dual Opteron 6348 system that I have tuned for best power/performance using XMR-STAK.

http://www.cpu-world.com/CPUs/Bulldozer/AMD-Opteron%206348%20-%20OS6348WKTCGHK.html

These have 12-Core, 12MB L2, 16MB L3.

My optimal settings are for each processor:

"cpu_threads_conf" :
[
    { "low_power_mode" : 1, "no_prefetch" : true, "affine_to_cpu" : 0 },
    { "low_power_mode" : 1, "no_prefetch" : true, "affine_to_cpu" : 2 },
    { "low_power_mode" : 1, "no_prefetch" : true, "affine_to_cpu" : 4 },
    { "low_power_mode" : 1, "no_prefetch" : true, "affine_to_cpu" : 6 },
    { "low_power_mode" : 2, "no_prefetch" : true, "affine_to_cpu" : 8 },
    { "low_power_mode" : 2, "no_prefetch" : true, "affine_to_cpu" : 10 },

    { "low_power_mode" : 1, "no_prefetch" : true, "affine_to_cpu" : 12 },
    { "low_power_mode" : 1, "no_prefetch" : true, "affine_to_cpu" : 14 },
    { "low_power_mode" : 1, "no_prefetch" : true, "affine_to_cpu" : 16 },
    { "low_power_mode" : 1, "no_prefetch" : true, "affine_to_cpu" : 18 },
    { "low_power_mode" : 2, "no_prefetch" : true, "affine_to_cpu" : 20 },
    { "low_power_mode" : 2, "no_prefetch" : true, "affine_to_cpu" : 22 },
],

The Opteron 6348's are running at 3.1 GHz using this setting and the 1x threads produce 66 H/s and the 2x threads produce 76 H/s. If I try to change one more of the 1x threads to 2x the resultant hash rate drops overall. Note the above settings fit exactly into the 16MB L3 cache so that additional thread (1x to 2x) overflowed the L3 cache and caused the drop in hash rate.

I did try the settings you use (all 12 cores on each Opteron at 1x thread) and the resultant hash rate for each Opteron is slightly higher (456 vs 416) but the power consumption shoots much much higher causing much more heat which then causes the fans to spin faster and louder.

For the sake of longevity and power usage I am continuing to use my settings above.

The system I have is a Supermicro H8DGI-F Server that has 6 PCIe slots. I currently have 3 of them filled with Nvidia GTX 750 GPUs which results in an overall hash rate of 1547: CPUs (832) and GPUs (715).

sundownz
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March 05, 2018, 12:53:21 AM
 #567


I have one of the DELL Servers rolling... getting ~2100 H/S out of the box first try.

Using ~675 watts or so.

What config are you using? I finally got setup today and am only getting 1500 h/s from the Dell server on Ubuntu 16 and XMR-STAK-CPU

This is my config :

"cpu_threads_conf" :
[
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 0 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 1 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 2 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 3 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 4 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 5 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 6 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 8 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 9 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 10 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 11 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 12 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 13 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 14 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 16 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 17 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 18 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 19 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 20 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 21 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 22 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 24 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 25 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 26 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 27 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 28 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 29 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 30 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 32 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 33 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 34 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 35 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 36 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 37 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 38 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 40 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 41 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 42 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 43 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 44 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 45 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 46 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 48 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 49 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 50 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 51 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 52 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 53 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 54 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 56 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 57 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 58 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 59 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 60 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 61 },
    { "low_power_mode" : false, "no_prefetch" : true, "affine_to_cpu" : 62 },

],

In your initial post #475 you stated "servers are loaded with 4x 12-Core AMD Opteron 6300 series CPUs each".
https://bitcointalk.org/index.php?topic=1955358.msg29265925#msg29265925

That would imply that a maximum of 48 cores. Since the above is showing 63 cores being used that would mean that the CPUs must be 16-Core Opterons.
http://www.cpu-world.com/CPUs/Bulldozer/TYPE-Opteron%206300%20series.html

I am confused in the above XMR-STAK settings. XMR-STAK tuning states that for optimal settings that each thread uses 2MB of cache.

The 16-Core Opterons have 16MB L2 Cache and 16MB L3 Cache.

So 8 threads fit into the 16MB L2 and/or 16MB L3 Cache.

I have a dual Opteron 6348 system that I have tuned for best power/performance using XMR-STAK.

http://www.cpu-world.com/CPUs/Bulldozer/AMD-Opteron%206348%20-%20OS6348WKTCGHK.html

These have 12-Core, 12MB L2, 16MB L3.

My optimal settings are for each processor:

"cpu_threads_conf" :
[
    { "low_power_mode" : 1, "no_prefetch" : true, "affine_to_cpu" : 0 },
    { "low_power_mode" : 1, "no_prefetch" : true, "affine_to_cpu" : 2 },
    { "low_power_mode" : 1, "no_prefetch" : true, "affine_to_cpu" : 4 },
    { "low_power_mode" : 1, "no_prefetch" : true, "affine_to_cpu" : 6 },
    { "low_power_mode" : 2, "no_prefetch" : true, "affine_to_cpu" : 8 },
    { "low_power_mode" : 2, "no_prefetch" : true, "affine_to_cpu" : 10 },

    { "low_power_mode" : 1, "no_prefetch" : true, "affine_to_cpu" : 12 },
    { "low_power_mode" : 1, "no_prefetch" : true, "affine_to_cpu" : 14 },
    { "low_power_mode" : 1, "no_prefetch" : true, "affine_to_cpu" : 16 },
    { "low_power_mode" : 1, "no_prefetch" : true, "affine_to_cpu" : 18 },
    { "low_power_mode" : 2, "no_prefetch" : true, "affine_to_cpu" : 20 },
    { "low_power_mode" : 2, "no_prefetch" : true, "affine_to_cpu" : 22 },
],

The Opteron 6348's are running at 3.1 GHz using this setting and the 1x threads produce 66 H/s and the 2x threads produce 76 H/s. If I try to change one more of the 1x threads to 2x the resultant hash rate drops overall. Note the above settings fit exactly into the 16MB L3 cache so that additional thread (1x to 2x) overflowed the L3 cache and caused the drop in hash rate.

I did try the settings you use (all 12 cores on each Opteron at 1x thread) and the resultant hash rate for each Opteron is slightly higher (456 vs 416) but the power consumption shoots much much higher causing much more heat which then causes the fans to spin faster and louder.

For the sake of longevity and power usage I am continuing to use my settings above.

The system I have is a Supermicro H8DGI-F Server that has 6 PCIe slots. I currently have 3 of them filled with Nvidia GTX 750 GPUs which results in an overall hash rate of 1547: CPUs (832) and GPUs (715).

Yes, you are correct, I messed up on my description earlier -- they are 6380 model CPUs with 16 cores.

I really haven't dived in heavily trying to tune them for efficiency as I have been concentrating on getting all my hardware running first, haha.

Thanks for sharing your info =)

For security, your account has been locked. Email acctcomp15@theymos.e4ward.com
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March 05, 2018, 01:51:07 AM
 #568

is it worth??
 how about hashrate??
MinersRus
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March 05, 2018, 04:24:04 AM
 #569

is it worth??
 how about hashrate??

Not sure who this is directed to?

But for me the Supermicro Server with dual Opteron 6348's and three Nvidia GTX 750's produces 1545 H/s and uses 426 watts. My electric cost is 7.4 cents per KWh.

The Monero profitability chart show a yearly profit of $465.

https://www.cryptocompare.com/mining/calculator/xmr?HashingPower=1545&HashingUnit=H%2Fs&PowerConsumption=426&CostPerkWh=0.074&MiningPoolFee=1

The Supermicro Server only cost me $252 and the three GTX 750's $120 for a total of $372. Payback is about 10 months. Realize though this hardware has value even if not for mining and that if I were to resell the server I would get well over $600 for it alone.
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March 05, 2018, 06:25:20 AM
 #570

: CPUs (832)

This would correlate to the 6344's I tested.  A pair does 800h/s.  Xmr-stak default config is 9T per CPU with 3T at low power for double mem and consumption of all L2/L3.  In dual configuration this is drawing 250w from the wall.  I tried setting 24T and 1x on memory usage but that was 40H/s slower and same power draw.

Sundownz don't like me.  I just wanna be fwiends and swap knowledge.  Sad
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March 05, 2018, 06:34:23 AM
 #571

Hey. I'll tell you my secret. I sold all my mining equipment long ago, even though I didn't have to pay for electricity. Mining has long been a profitable business. Those who had at one time to build a huge farm, and they will continue to earn,Yu long since paid off the cost of the equipment.
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March 05, 2018, 07:13:46 PM
Last edit: March 05, 2018, 08:47:50 PM by MinersRus
Merited by vapourminer (1)
 #572

: CPUs (832)

This would correlate to the 6344's I tested.  A pair does 800h/s.  Xmr-stak default config is 9T per CPU with 3T at low power for double mem and consumption of all L2/L3.  In dual configuration this is drawing 250w from the wall.  I tried setting 24T and 1x on memory usage but that was 40H/s slower and same power draw.

Sundownz don't like me.  I just wanna be fwiends and swap knowledge.  Sad

Upon further review it appears that Sundownz is on the right track with 1x threads on every core. These Opterons behave differently than the Xeons that I have optimized before.

The 6300 series Opterons have a CC (Core Complex) that consists of 2 integer cores stuck together.

When I used:

1x thread on one of the two cores in the CC results in 65 H/s.
2x thread on one of the two cores in the CC results in 75 H/s.
1x threads on both of the two cores in the CC results in 82 H/s.

Power does go up with more cores running but not as much as I expected.

For some reason the hash rate does not drop much when the thread count exceeds the L2/L3 cache. When running all 12 cores the hash rate goes to 39/40 from 41.

I am now running this configuration on my dual 6348 Opteron system:

"cpu_threads_conf" :
   [
        { "low_power_mode" : 1, "no_prefetch" : true, "affine_to_cpu" : 0  },
        { "low_power_mode" : 1, "no_prefetch" : true, "affine_to_cpu" : 2  },
        { "low_power_mode" : 1, "no_prefetch" : true, "affine_to_cpu" : 3  },
        { "low_power_mode" : 1, "no_prefetch" : true, "affine_to_cpu" : 4  },
        { "low_power_mode" : 1, "no_prefetch" : true, "affine_to_cpu" : 5  },
        { "low_power_mode" : 1, "no_prefetch" : true, "affine_to_cpu" : 6  },
        { "low_power_mode" : 1, "no_prefetch" : true, "affine_to_cpu" : 7  },
        { "low_power_mode" : 1, "no_prefetch" : true, "affine_to_cpu" : 8  },
        { "low_power_mode" : 1, "no_prefetch" : true, "affine_to_cpu" : 9  },
        { "low_power_mode" : 1, "no_prefetch" : true, "affine_to_cpu" : 10 },
        { "low_power_mode" : 1, "no_prefetch" : true, "affine_to_cpu" : 11 },

        { "low_power_mode" : 1, "no_prefetch" : true, "affine_to_cpu" : 12 },
        { "low_power_mode" : 1, "no_prefetch" : true, "affine_to_cpu" : 13 },
        { "low_power_mode" : 1, "no_prefetch" : true, "affine_to_cpu" : 14 },
        { "low_power_mode" : 1, "no_prefetch" : true, "affine_to_cpu" : 15 },
        { "low_power_mode" : 1, "no_prefetch" : true, "affine_to_cpu" : 16 },
        { "low_power_mode" : 1, "no_prefetch" : true, "affine_to_cpu" : 17 },
        { "low_power_mode" : 1, "no_prefetch" : true, "affine_to_cpu" : 18 },
        { "low_power_mode" : 1, "no_prefetch" : true, "affine_to_cpu" : 19 },
        { "low_power_mode" : 1, "no_prefetch" : true, "affine_to_cpu" : 20 },
        { "low_power_mode" : 1, "no_prefetch" : true, "affine_to_cpu" : 21 },
        { "low_power_mode" : 1, "no_prefetch" : true, "affine_to_cpu" : 22 },
        { "low_power_mode" : 1, "no_prefetch" : true, "affine_to_cpu" : 23 },
   ],

The reason I am not using CPU #0 core 1 is because I have that core affined to the Nvidia GPU's.

My overall hash rate for the CPU's only has jumped from 827 to 947. Power only increased 32 watts so it is profitable to use those extra 120 H/s.
https://www.cryptocompare.com/mining/calculator/xmr?HashingPower=120&HashingUnit=H%2Fs&PowerConsumption=32&CostPerkWh=0.074&MiningPoolFee=1

My system now produces 1640 H/s while using 486 watts.

Profit per year now has increased to $510.
https://www.cryptocompare.com/mining/calculator/xmr?HashingPower=1640&HashingUnit=H%2Fs&PowerConsumption=486&CostPerkWh=0.074&MiningPoolFee=1


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March 06, 2018, 04:49:56 AM
 #573

What's the advantage of building a $500 system doing 1600hs and then building 60x of them? That's still $30k. When you can get the same hash with just 2x 4xx/5xx cards or 1x vega and still have more slots to lower the system power overhead? Just spend your $30k on modern, faster, more efficient hardware...
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March 06, 2018, 06:46:06 AM
 #574

What's the advantage of building a $500 system doing 1600hs and then building 60x of them? That's still $30k. When you can get the same hash with just 2x 4xx/5xx cards or 1x vega and still have more slots to lower the system power overhead? Just spend your $30k on modern, faster, more efficient hardware...

Please show me where you can purchase these cards in bulk at a price that is not astronomical as I would love to fill my empty PCIe slots with them.  Some of us are on the path of putting whatever iron on the fire that is making money, even if it isn't exactly the most efficient or latest wiz bang contraption.  Even better, when / if (Cheesy) GPU prices get back to normal, we have tons of open slots ready to accept them with minimal config and downtime.  Until then, they at the minimum, more than cover the expense for electricity of the combined GPU/CPU mining activity and earn back their own cost, slowly but surely, even in the depressed market we are in compared to 3 months ago.

-=Slow Growth=-

Someone might see what I did there... Cheesy

Until then, I snipe cards when and where I can if they are relatively close to what msrp was.
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March 06, 2018, 12:20:20 PM
 #575

What's the advantage of building a $500 system doing 1600hs and then building 60x of them? That's still $30k. When you can get the same hash with just 2x 4xx/5xx cards or 1x vega and still have more slots to lower the system power overhead? Just spend your $30k on modern, faster, more efficient hardware...

Please show me where you can purchase these cards in bulk at a price that is not astronomical as I would love to fill my empty PCIe slots with them.  Some of us are on the path of putting whatever iron on the fire that is making money, even if it isn't exactly the most efficient or latest wiz bang contraption.  Even better, when / if (Cheesy) GPU prices get back to normal, we have tons of open slots ready to accept them with minimal config and downtime.  Until then, they at the minimum, more than cover the expense for electricity of the combined GPU/CPU mining activity and earn back their own cost, slowly but surely, even in the depressed market we are in compared to 3 months ago.

-=Slow Growth=-

Someone might see what I did there... Cheesy

Until then, I snipe cards when and where I can if they are relatively close to what msrp was.

Aha, you are mining IntenceCoin :-)

Regarding filling empty PCIe slots I think these server power supplies does not have PCIe power connectors? So we are limited to cards with power from PCIe slot ony or using external power supplies? I have a Supermicro quad socket Opteron 6276 machine but CPU mining only on that one. I figured out that by using external power supply and powered risers it may be possible using GPUs too but right now I have a separate GPU mining rig.

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March 06, 2018, 05:54:47 PM
 #576

What's the advantage of building a $500 system doing 1600hs and then building 60x of them? That's still $30k. When you can get the same hash with just 2x 4xx/5xx cards or 1x vega and still have more slots to lower the system power overhead? Just spend your $30k on modern, faster, more efficient hardware...

Please show me where you can purchase these cards in bulk at a price that is not astronomical as I would love to fill my empty PCIe slots with them.  Some of us are on the path of putting whatever iron on the fire that is making money, even if it isn't exactly the most efficient or latest wiz bang contraption.  Even better, when / if (Cheesy) GPU prices get back to normal, we have tons of open slots ready to accept them with minimal config and downtime.  Until then, they at the minimum, more than cover the expense for electricity of the combined GPU/CPU mining activity and earn back their own cost, slowly but surely, even in the depressed market we are in compared to 3 months ago.

-=Slow Growth=-

Someone might see what I did there... Cheesy

Until then, I snipe cards when and where I can if they are relatively close to what msrp was.

Aha, you are mining IntenceCoin :-)

Regarding filling empty PCIe slots I think these server power supplies does not have PCIe power connectors? So we are limited to cards with power from PCIe slot ony or using external power supplies? I have a Supermicro quad socket Opteron 6276 machine but CPU mining only on that one. I figured out that by using external power supply and powered risers it may be possible using GPUs too but right now I have a separate GPU mining rig.

Some servers do have PCIe slots and VGA power cables. My Supermicro server is a dual 6348 Opteron that has dual 1200 watt power supplies and has 6 PCIe slots and four 6-pin VGA power cables.

Expansion Slots
• Three (3) PCI-Express x16 Gen. 2
• One (1) PCI-Express x8 Gen. 2
• Two (2) PCI-Express x4 (in x8 slot) Gen. 2

I currently have three Nvidia GTX 750 in the three PCI-Express x16 Gen. 2 slots.


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March 06, 2018, 06:15:23 PM
 #577


Regarding filling empty PCIe slots I think these server power supplies does not have PCIe power connectors? So we are limited to cards with power from PCIe slot ony or using external power supplies? I have a Supermicro quad socket Opteron 6276 machine but CPU mining only on that one. I figured out that by using external power supply and powered risers it may be possible using GPUs too but right now I have a separate GPU mining rig.

Breakout boards...  All my HP server iron have GPUs running along with the CPUs.  Boxes like the r815 that don't have the onboard connectors to power them but could easily run GPUs with the addition of external PSU and risers.
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March 07, 2018, 08:22:47 AM
 #578


Regarding filling empty PCIe slots I think these server power supplies does not have PCIe power connectors? So we are limited to cards with power from PCIe slot ony or using external power supplies? I have a Supermicro quad socket Opteron 6276 machine but CPU mining only on that one. I figured out that by using external power supply and powered risers it may be possible using GPUs too but right now I have a separate GPU mining rig.

Breakout boards...  All my HP server iron have GPUs running along with the CPUs.  Boxes like the r815 that don't have the onboard connectors to power them but could easily run GPUs with the addition of external PSU and risers.

Its kind of annoying having dual 1400W Gold class PSU in the server but no PCIe power connectors from the PSUs.
So there is breakout-boards that can solve this so I can use existing PSUs?

My server is Supermicro 2042-6RF.

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March 07, 2018, 01:06:52 PM
 #579

any update man?  Wink

Been going slower than I had hoped... been very busy with my main business.

But the 5th rack of GPU rigs is 100% done and the 2nd rack of Dell servers is 50% done.

I am starting on the 6th rack of GPU rigs tomorrow.

Im building rigs using HP Z400, in my country it's about 230$/pcs, xeon w3565, 12G ram, 160G HDD 10.000rpm. I using HP server PSU, so cheap on ebay: https://www.ebay.com/i/302651472969?rt=nc its about 70$ for me, riser 5$/pcs. 4x1070 for mining ETH at 130Mh/s.

Just want to say thank you  Grin

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March 07, 2018, 03:08:38 PM
 #580


Its kind of annoying having dual 1400W Gold class PSU in the server but no PCIe power connectors from the PSUs.
So there is breakout-boards that can solve this so I can use existing PSUs?

My server is Supermicro 2042-6RF.

From the quick look I did, I don't think you have PSU's that can use breakout boards.  The Liteon's in the Dells and the HP ones are readily available on Ebay.  From what I saw of the connectors, technically I guess you could MacGyver something by soldering leads to the pins of the PSU but you would still have to buy cabling.

Picking up an HP1200w PSU and breakout board with cables is normally ~100 or so on ebay.
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