Building Cheap Miners : My "Secret"

[engineerking]

Using this to ping you.

[MinersRus]

Gave up trying to get the benchmark to work. Went straight to xmrig 4.2.1.

edit/update: Thanks for the detailed guides in this thread. Using turion and the custom bios for overclocking, was able to get 12.8khs. Very happy.

I am building out another identical setup but after flashing the bios, CPU2 does not working. Meaning, if I take the CPU out of CPU2 slot, it boots. If I put it back in, it doesn't boot. I tried flashing the original stock bios but that didn't help either. No bios beeps, no screen, nothing with CPU2 in. I checked for bent pins but don't see anything. Have you experienced that with any of your work?

For now, I will have to just use 3 CPUs which seems a little like a waste but better than nothing I guess...

On the defective CPU be sure the pads on the bottom are clean and that no thermal residue is on any of those pads. Some of the ones I bought had thermal residue on the pads.

I examine the pads using a high power bright light and a magnifying glass.

Use Isopropyl alcohol to clean the bottom pads on the processor and canned air to dry the pads.

[sundownz06]

Great info here. I've had my R815s turned totally off for a bit... all Quad 6380 machines.

Looks like may have to turn them on again when Monero forks. Doesn't seem profitable for LOKI.

[MinersRus]

Great info here. I've had my R815s turned totally off for a bit... all Quad 6380 machines.

Looks like may have to turn them on again when Monero forks. Doesn't seem profitable for LOKI.

I am gearing up with twelve Dell R815 Servers. They are a mix of quad 6348 and 6378 Opteron's.

Two Dell R815's with 4x 6348's and two R815 with 4x 6378's produce:

43,892 H/s on RandomX while drawing 13.65 Amps @ 240 VAC or 3276 watts at the service panel.
That is an average of 819 watts per server.

I measured after mining constantly for 30 minutes so the Hash Rate and Power Usage numbers have stabilized along with the server fan speeds.

The quad 6348's produce: 10684 H/s while the quad 6378's produce: 11262 H/s.

The 43,892 H/s @ 3276 watts is 13.4 H/s/Watt.

Looking forward to the November 30th fork.

[MinersRus]

Great info here. I've had my R815s turned totally off for a bit... all Quad 6380 machines.

I am using XMRig for testing RandomX now and will use it for production when the fork happens November 30th. I am so done with XMR-STK with the abusive nature of the developer.

XMRig is top notch. You can also compile from the source and set the donation level to 0% if desired.

xmrig 4.5.0-beta (unified 3 in 1 miner, CPU+OpenCL+CUDA)
https://github.com/xmrig/xmrig/releases/tag/v4.5.0-beta

Here is what I do for testing right now:

RandomX testing

Code:

wget https://github.com/xmrig/xmrig/releases/download/v4.5.0-beta/xmrig-4.5.0-beta-xenial-x64.tar.gz

tar xvf xmrig-4.5.0-beta-xenial-x64.tar.gz

cd xmrig-4.5.0-beta

edit config.json:
   "donate-level": 1,
   "algo": "rx/0",
   "pools": "rx.minexmr.com:4444",
   "user": "47wcnDjCDdjATivqH9GjC92jH9Vng7LCBMMxFmTV1Ybf5227MXhyD2gXynLUa9zrh5aPMAnu5npeQ2tLy8Z4pH7461vk6uo",

./xmrig

One thing to note that I have seen on the quad 16-core 6378 Opteron's is that disabling one core in each of the eight NUMA nodes increases the hash rate slightly while reducing power and heat slightly. The same reduction of one core per NUMA node may also be beneficial on your quad 16-core 6380 Opteron's.

Also note that you will need at least 8GB per Opteron or 32GB minimum for each R815 with quad Opterons. RandomX needs 2GB+256MB per NUMA node. Each Opteron has two NUMA Nodes so that equals 4.5GB per Opteron. That means that 4x 1GB sticks per Opteron will not work. You will either need 8x 1GB sticks or 4x 2GB sticks per Opteron at the minimum.

[sundownz06]

I believe I have 8 Gigs per CPU on nearly all of them (except one that has a bad DIMM slot). I am in the process of moving buildings so I hope I don't miss out on the initial Monero rush =)

[sundownz06]

I am hoping this Monero fork to RandomX will make my decision to own around 100 pcs Xeon X5660 worthwhile, haha!

I am getting close to 1500 H/S each on them... I forgot my power data (need to re-measure) but that is *under* the 90 watts max of the CPU... so 16 H/S per watt is the minimum.

[MinersRus]

I am hoping this Monero fork to RandomX will make my decision to own around 100 pcs Xeon X5660 worthwhile, haha!

I am getting close to 1500 H/S each on them... I forgot my power data (need to re-measure) but that is *under* the 90 watts max of the CPU... so 16 H/S per watt is the minimum.

Thermal Design Power for the Xeon X5660 is 95 watts. The actual power used can be upwards of 50% above this value just for the processor alone.

http://www.cpu-world.com/CPUs/Xeon/Intel-Xeon%20X5660%20-%20AT80614005127AA%20(BX80614X5660).html

Also you will need to consider the power used by the memory, motherboard, GPU and the efficiency of the power supply.

I have tested Dell T5600 workstations with dual Sandy Bridge E5-2640 and dual E5-2670 Xeon's. These are the results:

Dual E5-2640, 12 threads, 4554 H/s, 310 watts: 14.7 H/s/W

Dual E5-2670, 16 threads, 6406 H/s, 357 watts: 17.9 H/s/W

The E5-2640 also has a Thermal Design Power of 95 watts

http://www.cpu-world.com/CPUs/Xeon/Intel-Xeon%20E5-2640.html

Assuming that the two of then used 190 watts that still leaves 120 watts used for the memory, motherboard, Quadro 600 GPU and the 80% efficiency of the power supply.

Sandy Bridge processors are more efficient vs the Westmere processors which the X5660 is.

For actual power used you really need to measure at the wall.

Your guess of "16 H/S per watt" is not realistic.

[sundownz06]

That's true -- I am thinking only of the CPU draw -- in the past when I measured it I was just measuring what the CPU ADDED to the draw since I was also GPU mining (I will still be doing GPU on everything except the R815s as well).

[sundownz06]

Here we go:

IDLE SYSTEM : 86-watts
CPU MINING ONLY (RandomX @ 1500 H/S) : 186-watts
GPU MINING ONLY (1x1060 + 5x1050Ti on X16Rv2) : 465-Watts
CPU + GPU MINING : 550-Watts

But yes, your point is totally accurate if I am only CPU mining -- H/S per watt is not super great with all that idle usage.

Seems to be some synergy here, though... "CPU Only" adds 100-watts of draw, if I'm already GPU mining it only goes up 85-watts more (this is the number I was recalling).

So at my power cost it would run me $0.3122 per day in power to ONLY mine on the CPU -- that only jumps to $0.924 per day to do both ($0.61 more)... and worst case I can make $1 a day on NiceHash with this system GPUs. This is one of my lesser system in terms of GPU earnings; it's just the one I had a monitor hooked up to this morning.

So that is the way I'll go is to stack the RandomX CPU mining on top of the GPU and my *additional* earnings rings in at the ~16 H/S per watt figure.

[EnglishGentleman]

I am hoping this Monero fork to RandomX will make my decision to own around 100 pcs Xeon X5660 worthwhile, haha!

I am getting close to 1500 H/S each on them... I forgot my power data (need to re-measure) but that is *under* the 90 watts max of the CPU... so 16 H/S per watt is the minimum.

Thermal Design Power for the Xeon X5660 is 95 watts. The actual power used can be upwards of 50% above this value just for the processor alone.

http://www.cpu-world.com/CPUs/Xeon/Intel-Xeon%20X5660%20-%20AT80614005127AA%20(BX80614X5660).html

Also you will need to consider the power used by the memory, motherboard, GPU and the efficiency of the power supply.

I have tested Dell T5600 workstations with dual Sandy Bridge E5-2640 and dual E5-2670 Xeon's. These are the results:

Dual E5-2640, 12 threads, 4554 H/s, 310 watts: 14.7 H/s/W

Dual E5-2670, 16 threads, 6406 H/s, 357 watts: 17.9 H/s/W

The E5-2640 also has a Thermal Design Power of 95 watts

http://www.cpu-world.com/CPUs/Xeon/Intel-Xeon%20E5-2640.html

Assuming that the two of then used 190 watts that still leaves 120 watts used for the memory, motherboard, Quadro 600 GPU and the 80% efficiency of the power supply.

Sandy Bridge processors are more efficient vs the Westmere processors which the X5660 is.

For actual power used you really need to measure at the wall.

Your guess of "16 H/S per watt" is not realistic.

THANKS for the information.   How much memory did you have installed for those E5-2640 and E5-2670 tests and how fast is the memory? Also which OS did you use?

[MinersRus]

Here we go:

IDLE SYSTEM : 86-watts
CPU MINING ONLY (RandomX @ 1500 H/S) : 186-watts
GPU MINING ONLY (1x1060 + 5x1050Ti on X16Rv2) : 465-Watts
CPU + GPU MINING : 550-Watts

But yes, your point is totally accurate if I am only CPU mining -- H/S per watt is not super great with all that idle usage.

Seems to be some synergy here, though... "CPU Only" adds 100-watts of draw, if I'm already GPU mining it only goes up 85-watts more (this is the number I was recalling).

So at my power cost it would run me $0.3122 per day in power to ONLY mine on the CPU -- that only jumps to $0.924 per day to do both ($0.61 more)... and worst case I can make $1 a day on NiceHash with this system GPUs. This is one of my lesser system in terms of GPU earnings; it's just the one I had a monitor hooked up to this morning.

So that is the way I'll go is to stack the RandomX CPU mining on top of the GPU and my *additional* earnings rings in at the ~16 H/S per watt figure.

Is the 1500 H/s maintained when you are also mining on the GPU's or does it take a hit?

I have just now tested my Dell T5500 with dual X5670's. This is my main workstation and it is powered on 24/7.

At idle the power used is 110 watts.

When mining RandomX it goes to a constant 308 watts. Hash rate is 3124 H/s or 1562 H/s for each X5670 Xeon. So the power used mining RandomX is 198 watts for two X5670 Xeon's or 99 watts for one X5670 Xeon. That makes your original 95 watt number for the X5660 right on the mark.

So my Dell T5500 with dual X5670's rig mining RandomX produces 3124 H/s for an additional power usage of 198 watts which makes 15.78 H/s per watt figure.

[MinersRus]

I am hoping this Monero fork to RandomX will make my decision to own around 100 pcs Xeon X5660 worthwhile, haha!

I am getting close to 1500 H/S each on them... I forgot my power data (need to re-measure) but that is *under* the 90 watts max of the CPU... so 16 H/S per watt is the minimum.

Thermal Design Power for the Xeon X5660 is 95 watts. The actual power used can be upwards of 50% above this value just for the processor alone.

http://www.cpu-world.com/CPUs/Xeon/Intel-Xeon%20X5660%20-%20AT80614005127AA%20(BX80614X5660).html

Also you will need to consider the power used by the memory, motherboard, GPU and the efficiency of the power supply.

I have tested Dell T5600 workstations with dual Sandy Bridge E5-2640 and dual E5-2670 Xeon's. These are the results:

Dual E5-2640, 12 threads, 4554 H/s, 310 watts: 14.7 H/s/W

Dual E5-2670, 16 threads, 6406 H/s, 357 watts: 17.9 H/s/W

The E5-2640 also has a Thermal Design Power of 95 watts

http://www.cpu-world.com/CPUs/Xeon/Intel-Xeon%20E5-2640.html

Assuming that the two of then used 190 watts that still leaves 120 watts used for the memory, motherboard, Quadro 600 GPU and the 80% efficiency of the power supply.

Sandy Bridge processors are more efficient vs the Westmere processors which the X5660 is.

For actual power used you really need to measure at the wall.

Your guess of "16 H/S per watt" is not realistic.

THANKS for the information.   How much memory did you have installed for those E5-2640 and E5-2670 tests and how fast is the memory? Also which OS did you use?

64GB of PC3-10600R memory (1333 MHz), 8x 8GB sticks

Windows 10 Pro

[EnglishGentleman]

I am hoping this Monero fork to RandomX will make my decision to own around 100 pcs Xeon X5660 worthwhile, haha!

I am getting close to 1500 H/S each on them... I forgot my power data (need to re-measure) but that is *under* the 90 watts max of the CPU... so 16 H/S per watt is the minimum.

Thermal Design Power for the Xeon X5660 is 95 watts. The actual power used can be upwards of 50% above this value just for the processor alone.

http://www.cpu-world.com/CPUs/Xeon/Intel-Xeon%20X5660%20-%20AT80614005127AA%20(BX80614X5660).html

Also you will need to consider the power used by the memory, motherboard, GPU and the efficiency of the power supply.

I have tested Dell T5600 workstations with dual Sandy Bridge E5-2640 and dual E5-2670 Xeon's. These are the results:

Dual E5-2640, 12 threads, 4554 H/s, 310 watts: 14.7 H/s/W

Dual E5-2670, 16 threads, 6406 H/s, 357 watts: 17.9 H/s/W

The E5-2640 also has a Thermal Design Power of 95 watts

http://www.cpu-world.com/CPUs/Xeon/Intel-Xeon%20E5-2640.html

Assuming that the two of then used 190 watts that still leaves 120 watts used for the memory, motherboard, Quadro 600 GPU and the 80% efficiency of the power supply.

Sandy Bridge processors are more efficient vs the Westmere processors which the X5660 is.

For actual power used you really need to measure at the wall.

Your guess of "16 H/S per watt" is not realistic.

THANKS for the information.   How much memory did you have installed for those E5-2640 and E5-2670 tests and how fast is the memory? Also which OS did you use?

64GB of PC3-10600R memory (1333 MHz), 8x 8GB sticks

Windows 10 Pro

Thanks for the information. Do you think you will make any money mining XMR RandomX with servers? May be you would if you had very cheap power. RandomX is currently used on LOKI, a tiny coin with a daily exchange volume of $10k.   Loki's network Hashrate is 52 MHS which is equivalent to 30000 Xeon E5-2620 CPUs or 4700 of the new Ryzen 3900X CPU.     So that is a huge hashrate to get just $10k out per day.

[EnglishGentleman]

Great info here. I've had my R815s turned totally off for a bit... all Quad 6380 machines.

I am using XMRig for testing RandomX now and will use it for production when the fork happens November 30th. I am so done with XMR-STK with the abusive nature of the developer.

XMRig is top notch. You can also compile from the source and set the donation level to 0% if desired.

xmrig 4.5.0-beta (unified 3 in 1 miner, CPU+OpenCL+CUDA)
https://github.com/xmrig/xmrig/releases/tag/v4.5.0-beta

Here is what I do for testing right now:

RandomX testing

Code:

wget https://github.com/xmrig/xmrig/releases/download/v4.5.0-beta/xmrig-4.5.0-beta-xenial-x64.tar.gz

tar xvf xmrig-4.5.0-beta-xenial-x64.tar.gz

cd xmrig-4.5.0-beta

edit config.json:
   "donate-level": 1,
   "algo": "rx/0",
   "pools": "rx.minexmr.com:4444",
   "user": "47wcnDjCDdjATivqH9GjC92jH9Vng7LCBMMxFmTV1Ybf5227MXhyD2gXynLUa9zrh5aPMAnu5npeQ2tLy8Z4pH7461vk6uo",

./xmrig

One thing to note that I have seen on the quad 16-core 6378 Opteron's is that disabling one core in each of the eight NUMA nodes increases the hash rate slightly while reducing power and heat slightly. The same reduction of one core per NUMA node may also be beneficial on your quad 16-core 6380 Opteron's.

Also note that you will need at least 8GB per Opteron or 32GB minimum for each R815 with quad Opterons. RandomX needs 2GB+256MB per NUMA node. Each Opteron has two NUMA Nodes so that equals 4.5GB per Opteron. That means that 4x 1GB sticks per Opteron will not work. You will either need 8x 1GB sticks or 4x 2GB sticks per Opteron at the minimum.

THANKS. Did you use anything else on the command line/config file or CPU set up? Or is it optimal to let XMRIG figure it out?

[MinersRus]

Great info here. I've had my R815s turned totally off for a bit... all Quad 6380 machines.

I am using XMRig for testing RandomX now and will use it for production when the fork happens November 30th. I am so done with XMR-STK with the abusive nature of the developer.

XMRig is top notch. You can also compile from the source and set the donation level to 0% if desired.

xmrig 4.5.0-beta (unified 3 in 1 miner, CPU+OpenCL+CUDA)
https://github.com/xmrig/xmrig/releases/tag/v4.5.0-beta

Here is what I do for testing right now:

RandomX testing

Code:

wget https://github.com/xmrig/xmrig/releases/download/v4.5.0-beta/xmrig-4.5.0-beta-xenial-x64.tar.gz

tar xvf xmrig-4.5.0-beta-xenial-x64.tar.gz

cd xmrig-4.5.0-beta

edit config.json:
   "donate-level": 1,
   "algo": "rx/0",
   "pools": "rx.minexmr.com:4444",
   "user": "47wcnDjCDdjATivqH9GjC92jH9Vng7LCBMMxFmTV1Ybf5227MXhyD2gXynLUa9zrh5aPMAnu5npeQ2tLy8Z4pH7461vk6uo",

./xmrig

One thing to note that I have seen on the quad 16-core 6378 Opteron's is that disabling one core in each of the eight NUMA nodes increases the hash rate slightly while reducing power and heat slightly. The same reduction of one core per NUMA node may also be beneficial on your quad 16-core 6380 Opteron's.

Also note that you will need at least 8GB per Opteron or 32GB minimum for each R815 with quad Opterons. RandomX needs 2GB+256MB per NUMA node. Each Opteron has two NUMA Nodes so that equals 4.5GB per Opteron. That means that 4x 1GB sticks per Opteron will not work. You will either need 8x 1GB sticks or 4x 2GB sticks per Opteron at the minimum.

THANKS. Did you use anything else on the command line/config file or CPU set up? Or is it optimal to let XMRIG figure it out?

No command line options or changes for the Dell R815 Server with the quad 6348 Opteron's.

As I stated on the Dell R815 Server with the quad 6378 Opteron's it is best to disable one core per NUMA node to gain an additional 1% in hash rate while very slightly lowering power consumption and processor heat. This is done by first running XMRig to that it fills in the CPU core options in the config.json file. Then exiting XMRig and now editing the RX section to remove one core from each of the eight NUMA nodes.

I reformat the very long RX CPU section [0, 1, 2, ... 61, 62, 63] to this:

[0, 1, 2, 3, 4, 5, 6, 7,
 8, 9, 10, 11, 12, 13, 14, 15,

...

48, 49, 50, 51, 52, 53, 54, 55,
56, 57, 58, 59, 60, 61, 62, 63]

that way I can easily see each NUMA node. I then delete the last entry on each line. Be sure to leave the trailing comma in the first seven lines and on the last line remove the ", 63" but leave the "]" bracket.

Now when you run XMRig it will use 56 cores when mining.

[MinersRus]

I am hoping this Monero fork to RandomX will make my decision to own around 100 pcs Xeon X5660 worthwhile, haha!

I am getting close to 1500 H/S each on them... I forgot my power data (need to re-measure) but that is *under* the 90 watts max of the CPU... so 16 H/S per watt is the minimum.

Thermal Design Power for the Xeon X5660 is 95 watts. The actual power used can be upwards of 50% above this value just for the processor alone.

http://www.cpu-world.com/CPUs/Xeon/Intel-Xeon%20X5660%20-%20AT80614005127AA%20(BX80614X5660).html

Also you will need to consider the power used by the memory, motherboard, GPU and the efficiency of the power supply.

I have tested Dell T5600 workstations with dual Sandy Bridge E5-2640 and dual E5-2670 Xeon's. These are the results:

Dual E5-2640, 12 threads, 4554 H/s, 310 watts: 14.7 H/s/W

Dual E5-2670, 16 threads, 6406 H/s, 357 watts: 17.9 H/s/W

The E5-2640 also has a Thermal Design Power of 95 watts

http://www.cpu-world.com/CPUs/Xeon/Intel-Xeon%20E5-2640.html

Assuming that the two of then used 190 watts that still leaves 120 watts used for the memory, motherboard, Quadro 600 GPU and the 80% efficiency of the power supply.

Sandy Bridge processors are more efficient vs the Westmere processors which the X5660 is.

For actual power used you really need to measure at the wall.

Your guess of "16 H/S per watt" is not realistic.

THANKS for the information.   How much memory did you have installed for those E5-2640 and E5-2670 tests and how fast is the memory? Also which OS did you use?

64GB of PC3-10600R memory (1333 MHz), 8x 8GB sticks

Windows 10 Pro

Thanks for the information. Do you think you will make any money mining XMR RandomX with servers? May be you would if you had very cheap power. RandomX is currently used on LOKI, a tiny coin with a daily exchange volume of $10k.   Loki's network Hashrate is 52 MHS which is equivalent to 30000 Xeon E5-2620 CPUs or 4700 of the new Ryzen 3900X CPU.     So that is a huge hashrate to get just $10k out per day.

LOKI is a very very very minor coin vs Monero (XMR).

LOKI price $0.315
Monero price: $63.555

https://minerstat.com/miner/xmrig

RandomXL produces hash rates double what RandomX will produce so 52M H/s of RandomXL is equivalent to 26M H/s of RandomX.

I for one do not believe you can extrapolate what you see mining LOKI to Monero (RandomX).

I am also at a loss in why anyone is currently mining LOKI because the numbers I plug in even with free electricity you will be losing money mining it (because of the pool fee).

Even if you had electricity at 1 cent per KWh you will lose 5 cents a day with an EPYC 7742 using 225 watts and producing 77464 H/s of RandomXL.

RANDOMX CPU BENCHMARKS
https://randomx.monerobenchmarks.info/index.php

Loki mining calculator
https://minerstat.com/coin/LOKI

Great chart showing all the coins that XMRig CPU miner can mine
https://minerstat.com/miner/xmrig

As for your question: Do you think you will make any money mining XMR RandomX with servers?

Yes I do for Monero (XMR) but if I am wrong I will be able to resell the servers I have bought for a profit so my risk is minimum.
 

[EnglishGentleman]

Great info here. I've had my R815s turned totally off for a bit... all Quad 6380 machines.

I am using XMRig for testing RandomX now and will use it for production when the fork happens November 30th. I am so done with XMR-STK with the abusive nature of the developer.

XMRig is top notch. You can also compile from the source and set the donation level to 0% if desired.

xmrig 4.5.0-beta (unified 3 in 1 miner, CPU+OpenCL+CUDA)
https://github.com/xmrig/xmrig/releases/tag/v4.5.0-beta

Here is what I do for testing right now:

RandomX testing

Code:

wget https://github.com/xmrig/xmrig/releases/download/v4.5.0-beta/xmrig-4.5.0-beta-xenial-x64.tar.gz

tar xvf xmrig-4.5.0-beta-xenial-x64.tar.gz

cd xmrig-4.5.0-beta

edit config.json:
   "donate-level": 1,
   "algo": "rx/0",
   "pools": "rx.minexmr.com:4444",
   "user": "47wcnDjCDdjATivqH9GjC92jH9Vng7LCBMMxFmTV1Ybf5227MXhyD2gXynLUa9zrh5aPMAnu5npeQ2tLy8Z4pH7461vk6uo",

./xmrig

One thing to note that I have seen on the quad 16-core 6378 Opteron's is that disabling one core in each of the eight NUMA nodes increases the hash rate slightly while reducing power and heat slightly. The same reduction of one core per NUMA node may also be beneficial on your quad 16-core 6380 Opteron's.

Also note that you will need at least 8GB per Opteron or 32GB minimum for each R815 with quad Opterons. RandomX needs 2GB+256MB per NUMA node. Each Opteron has two NUMA Nodes so that equals 4.5GB per Opteron. That means that 4x 1GB sticks per Opteron will not work. You will either need 8x 1GB sticks or 4x 2GB sticks per Opteron at the minimum.

THANKS. Did you use anything else on the command line/config file or CPU set up? Or is it optimal to let XMRIG figure it out?

No command line options or changes for the Dell R815 Server with the quad 6348 Opteron's.

As I stated on the Dell R815 Server with the quad 6378 Opteron's it is best to disable one core per NUMA node to gain an additional 1% in hash rate while very slightly lowering power consumption and processor heat. This is done by first running XMRig to that it fills in the CPU core options in the config.json file. Then exiting XMRig and now editing the RX section to remove one core from each of the eight NUMA nodes.

I reformat the very long RX CPU section [0, 1, 2, ... 61, 62, 63] to this:

[0, 1, 2, 3, 4, 5, 6, 7,
 8, 9, 10, 11, 12, 13, 14, 15,

...

48, 49, 50, 51, 52, 53, 54, 55,
56, 57, 58, 59, 60, 61, 62, 63]

that way I can easily see each NUMA node. I then delete the last entry on each line. Be sure to leave the trailing comma in the first seven lines and on the last line remove the ", 63" but leave the "]" bracket.

Now when you run XMRig it will use 56 cores when mining.

THANKS. Do you think perhaps the 52 MH/S of Loki hashrate is latent XMR hashrate? i.e. machines that are commissioned and ready to move to XMR? The benefit of doing this to know the machines work and to make tweaks and test airflow etc

[EnglishGentleman]

I am hoping this Monero fork to RandomX will make my decision to own around 100 pcs Xeon X5660 worthwhile, haha!

I am getting close to 1500 H/S each on them... I forgot my power data (need to re-measure) but that is *under* the 90 watts max of the CPU... so 16 H/S per watt is the minimum.

Thermal Design Power for the Xeon X5660 is 95 watts. The actual power used can be upwards of 50% above this value just for the processor alone.

http://www.cpu-world.com/CPUs/Xeon/Intel-Xeon%20X5660%20-%20AT80614005127AA%20(BX80614X5660).html

Also you will need to consider the power used by the memory, motherboard, GPU and the efficiency of the power supply.

I have tested Dell T5600 workstations with dual Sandy Bridge E5-2640 and dual E5-2670 Xeon's. These are the results:

Dual E5-2640, 12 threads, 4554 H/s, 310 watts: 14.7 H/s/W

Dual E5-2670, 16 threads, 6406 H/s, 357 watts: 17.9 H/s/W

The E5-2640 also has a Thermal Design Power of 95 watts

http://www.cpu-world.com/CPUs/Xeon/Intel-Xeon%20E5-2640.html

Assuming that the two of then used 190 watts that still leaves 120 watts used for the memory, motherboard, Quadro 600 GPU and the 80% efficiency of the power supply.

Sandy Bridge processors are more efficient vs the Westmere processors which the X5660 is.

For actual power used you really need to measure at the wall.

Your guess of "16 H/S per watt" is not realistic.

THANKS for the information.   How much memory did you have installed for those E5-2640 and E5-2670 tests and how fast is the memory? Also which OS did you use?

64GB of PC3-10600R memory (1333 MHz), 8x 8GB sticks

Windows 10 Pro

Thanks for the information. Do you think you will make any money mining XMR RandomX with servers? May be you would if you had very cheap power. RandomX is currently used on LOKI, a tiny coin with a daily exchange volume of $10k.   Loki's network Hashrate is 52 MHS which is equivalent to 30000 Xeon E5-2620 CPUs or 4700 of the new Ryzen 3900X CPU.     So that is a huge hashrate to get just $10k out per day.

LOKI is a very very very minor coin vs Monero (XMR).

LOKI price $0.315
Monero price: $63.555

https://minerstat.com/miner/xmrig

RandomXL produces hash rates double what RandomX will produce so 52M H/s of RandomXL is equivalent to 26M H/s of RandomX.

I for one do not believe you can extrapolate what you see mining LOKI to Monero (RandomX).

I am also at a loss in why anyone is currently mining LOKI because the numbers I plug in even with free electricity you will be losing money mining it (because of the pool fee).

Even if you had electricity at 1 cent per KWh you will lose 5 cents a day with an EPYC 7742 using 225 watts and producing 77464 H/s of RandomXL.

RANDOMX CPU BENCHMARKS
https://randomx.monerobenchmarks.info/index.php

Loki mining calculator
https://minerstat.com/coin/LOKI

Great chart showing all the coins that XMRig CPU miner can mine
https://minerstat.com/miner/xmrig

As for your question: Do you think you will make any money mining XMR RandomX with servers?

Yes I do for Monero (XMR) but if I am wrong I will be able to resell those the servers I have bought for a profit so my risk is minimum.
 

THANKS BUT my test server (Dell R610 with dual E5-2620) produced almost identical results for Loki and XMR.

LOKI 3600 H/S see https://drive.google.com/file/d/1XM3l6UzTeQmfUlCQ9DJXco6y4hN1oJUt/view?usp=sharing

XMR 3700 H/S see https://drive.google.com/file/d/1M3u24W8GCo8yLrGZvFvFjmcr3T1SKBCP/view?usp=sharing

So are you sure that Loki and XMR have different hashrate results?

Perhaps I am doing something wrong.  Here are the command lines used:

LOKI: xmrig --url pool.hashvault.pro:80 --user L7f9SMpq53wNERBxCngFyqMoJvkMax8xSitiJY335ra12ucbiEFzgqKfHJg1Q9y58RGMi3TyGvPC94e 6w3zYKK9i9PHmDDr --pass x --keepalive --donate-level 0 --tls  --cpu-priority 5

XMR: xmrig -o randomx-benchmark.xmrig.com:7777 -u 47wcnDjCDdjATivqH9GjC92jH9Vng7LCBMMxFmTV1Ybf5227MXhyD2gXynLUa9zrh5aPMAnu5npeQ2t Ly8Z4pH7461vk6uo  --cpu-priority 5 --algo = rx/0

Can you see an error?

Thanks

[MinersRus]

So are you sure that Loki and XMR have different hashrate results?

It looks like I was wrong as the only difference between Loki (RandomXL) and XMR (RandomX) is the RandomX program size (LOKI is larger).

Can you provide a clear info about RandomXL?

https://www.reddit.com/r/LokiProject/comments/ceas1a/randomxl_mining