CCminer(SP-MOD) Modded GPU kernels.

[Grout]

Second question, my calculations don't match yours. I find 970s to be better than 750Tis with version 51 of ccminer. As an example, here are two 6 GPUs rigs running Quark algo:

6 750Tis at 155€, 5730kH, 60W
450W PSU 43€
hashrate 34380, power usage 360W, price 973€. 35.33kH/€, 95.5kH/W

6 970 at 365€, 16200kH, 160W
1200W PSU 275€
hashrate 97200, power usage 960W, price 2465€. 39.43kH/€, 101.25kH/W

The efficiency of 970s looks even better when you consider it takes three rigs of 750ti's to get
the same hash rate as one rig of 970's. Add the cost of two more CPUs, motherboards, drams,
hard drives (or other boot devices), psus and cases, and the power they consume.

I don't know euro pricing but I can guess the power overhead of each rig to be 100W.
That would make 3(360+100) W for the 3 750ti rigs and 960+100 W for the 970 rig.
The 750ti rigs would have a higher total hash rate of 103140 KH/s vs the 970s at 97200.

3 x 6 x 750ti: 74.7 KH/W
1 x 6 x 970:    91.7 KH/W

Smaller cards have a higher cost and power overhead due to lower density while bigger cards
have a steeper price curve. The 970 looks to be in the sweet spot. The 970 can also compete
on space with the availability of an LP version.

Energy is quite expensive in France: 0.144€/kWh, which makes Nvidia the only cards that can ROI. And it still takes them around 8 months...

My rig is built around an Asrock H81 pro BTC and a Celeron G1840 (Haswell) which has a very low power usage. I also use a USB stick instead of a HDD for the same reason. That brings the consumption to 12W for the empty rig (measured from the wall). So the difference between 750 and 970 is not that steep for me, but an all-970 rig still wins by around 5%.

A nice point of the PSU I quoted (Cooler Master V1200 platinum) is that it has 12 6+2 pcie ports out of the box, so you don't need adapters. But, as crysx said, it will probably look like a spaghetti nightmare: my first rig is named (very originally) miner1, the second one will be named firehazard1 :-)

[pallas]

Energy is quite expensive in France: 0.144€/kWh, which makes Nvidia the only cards that can ROI. And it still takes them around 8 months...

Expensive? In Italy we pay way more than 0.2, even 0.3 at times. And the more you use, the more you pay (per KW/h).

[Grout]

Energy is quite expensive in France: 0.144€/kWh, which makes Nvidia the only cards that can ROI. And it still takes them around 8 months...

Expensive? In Italy we pay way more than 0.2, even 0.3 at times. And the more you use, the more you pay (per KW/h).

Ouch, that's rough! I was comparing with US prices that go as low 0.1$
Your ROI times must be painful :-/

[pallas]

Energy is quite expensive in France: 0.144€/kWh, which makes Nvidia the only cards that can ROI. And it still takes them around 8 months...

Expensive? In Italy we pay way more than 0.2, even 0.3 at times. And the more you use, the more you pay (per KW/h).

Ouch, that's rough! I was comparing with US prices that go as low 0.1$
Your ROI times must be painful :-/

I only mine during winter, so I can at least use the heat produced :-/

[Leinaded]

Everything depend on one thing; your electicity cost. If you have expensive electricity in your area, you will never hit ROI, if you have average electricity cost then you probably won't ROI and if you have very cheap electricity go for it.

That's one of the things I'm trying to solve since here in my country the price of electricity makes any mining unprofitable (0,18 USD KWh). I'm studying the option of an aerogenerator and a battery rack.

Epsylon3/tpruvot still builds for compute 3.0 & 3.5 last time I checked. Or you could compile ccminer yourself.

Thanks for the info joblo. I'll check it out.

btw - ours are open air systems like yours but in a custom built 'shelving unit' - which is difficult to maintain at the moment ... we are still designing the open frame ( to make it a modular system ) - and morphing it into a closed frame that uses air vacuum ( rather than just open air ) to dissipate heat which will also reduce noise at the same time ...

Two questions for chrysophylax:

Its obvious your team has studied your hardware setup thoroughly to have the best efficiency so you will be able to tell me what I haven't considered in my question and my mistakes.

• In your mining farm setup why have you opted for gtx 750ti cards instead of mining asics? Don't asics have more power efficiency and higher hashrates specially in SHA-256 cryptocoins?
  Wouldn't be more profitable in terms of power consumption to mine SHA-256 altcoins for example and then exchange them for your desired cryptocoin or choosing what algorythm to mine in terms of the most profitable in a given time based on their difficulty and exchange rate of the corresponding altcoin?
• Have you thought about using mineral oil solution or freon to cool your setup? Colleges are using this technique and its totally safe using the right compounds. This way you don't have to worry about cables and air flow and reduce the power consumption. If going pro mining why don't go all the way? Even gives you leeway to overclock and play with temperatures.

https://youtu.be/OWKG4F8ANu4

[sp_]

Thank you sp
I think once you start your builds on the 980ti the performance will go way up....and so do the donations.  

I think the 980ti card is to expensive for me to buy. Please ask NVIDIA to send me a card for free  

And continue to donate some beers.
A few bucks is bether than nothing..

[joblo]

Second question, my calculations don't match yours. I find 970s to be better than 750Tis with version 51 of ccminer. As an example, here are two 6 GPUs rigs running Quark algo:

6 750Tis at 155€, 5730kH, 60W
450W PSU 43€
hashrate 34380, power usage 360W, price 973€. 35.33kH/€, 95.5kH/W

6 970 at 365€, 16200kH, 160W
1200W PSU 275€
hashrate 97200, power usage 960W, price 2465€. 39.43kH/€, 101.25kH/W

The efficiency of 970s looks even better when you consider it takes three rigs of 750ti's to get
the same hash rate as one rig of 970's. Add the cost of two more CPUs, motherboards, drams,
hard drives (or other boot devices), psus and cases, and the power they consume.

I don't know euro pricing but I can guess the power overhead of each rig to be 100W.
That would make 3(360+100) W for the 3 750ti rigs and 960+100 W for the 970 rig.
The 750ti rigs would have a higher total hash rate of 103140 KH/s vs the 970s at 97200.

3 x 6 x 750ti: 74.7 KH/W
1 x 6 x 970:    91.7 KH/W

Smaller cards have a higher cost and power overhead due to lower density while bigger cards
have a steeper price curve. The 970 looks to be in the sweet spot. The 970 can also compete
on space with the availability of an LP version.

whats your take on the 980ti? ...

if it seems to be the best value - then it may be worth the effort of replacing the 750ti cards ...

It really depends on price and whether the price premium for the 980ti is a good tradeoff
for the increased density. I don't have CAD pricing for the 980ti but the 980 has
a higher cost/hash than the 750ti, 960 & 970.

 I expect power efficiency to be comaparable to the rest of the
9xx family

[sp_]

submitted a small speedup in myriad groestl. more is comming

[sp_]

Energy is quite expensive in France: 0.144€/kWh, which makes Nvidia the only cards that can ROI. And it still takes them around 8 months...

ROI in 240 days.

if you have 240 GPU's you will ROI everyday.

ROI 1 gpu per day.

With 240 980ti's (40 rigs), $750 a day.

[5w00p]

Two questions for chrysophylax:

Its obvious your team has studied your hardware setup thoroughly to have the best efficiency so you will be able to tell me what I haven't considered in my question and my mistakes.

• In your mining farm setup why have you opted for gtx 750ti cards instead of mining asics? Don't asics have more power efficiency and higher hashrates specially in SHA-256 cryptocoins?
  Wouldn't be more profitable in terms of power consumption to mine SHA-256 altcoins for example and then exchange them for your desired cryptocoin or choosing what algorythm to mine in terms of the most profitable in a given time based on their difficulty and exchange rate of the corresponding altcoin?
• Have you thought about using mineral oil solution or freon to cool your setup? Colleges are using this technique and its totally safe using the right compounds. This way you don't have to worry about cables and air flow and reduce the power consumption. If going pro mining why don't go all the way? Even gives you leeway to overclock and play with temperatures.

https://youtu.be/OWKG4F8ANu4

I am not crysx, but I can help answer these two questions:

1) NONE of us are mining SHA-256 algorithm. You are of course correct about ASICs dominating SHA-256, or any other algorithm for which ASICs exist. (Scrypt) [Are there others?]
Which is exactly why we don't mine any algo with ASICs.
We are GPU miners and this is a thread about the fastest nVidia-based GPU's using SP's optimized miner.

2) That oil-cooling stuff is indeed awesome, but the implementation costs would likely destroy any chance of achieving ROI.
(Public) Colleges have plenty of (public) funds to spend and they don't calculate ROI like us GPU miners must do.

[sp_]

Submitted another improvement.. more than 10% faster on the gtx 970

New hashrates  Myriad groestl.

750ti: 14.400 MHASH
970: 44.360 MHASH

Compared to the opensource AMD miner:

Speed with Myriad-Groestl (Myriadcoin, Saffroncoin, Futurecoin) mining:
R9 290 - 34.2 MH/s

[Epsylon3]

What does DMD-Groestl do on a 980?

here on my last x64 release (to test a bug report that i cant reproduce...)
8170k on the 750ti black
21.09M on the 970 at 1300MHz

params : -i 19 -a dmd-gr --cpu-priority 3 -o stratum+tcp://dmdpool.digsys.bg:3333 -u Epsy.dmd -p x

sp version defaults are -i 23/24 which put the hashrate at 22.49MH but make windows ui unusable

[sp_]

sp-mod release51 32-bit

gigabyte windforce 970 oc standard clocks 23.8MHASH

[Nubminer]

i just tried myriad at miningpoolhub

ccminer.exe -a groestl -o stratum+tcp://hub.miningpoolhub.com:20479 -u user.worker -p x

and I got all reject for difficulty too low.

I tried to run a pool test for you.

[rednoW]

Merged a change from the tpruvot branch. When the stratum connection was lost, ccminer kept mining even if the internet connection was down. Now ccminer it wil sleep and save electricity.

Tried to close my internet connection but ccminer with latest commits continues to load gpu 100% (((

[Eliovp]

Energy is quite expensive in France: 0.144€/kWh, which makes Nvidia the only cards that can ROI. And it still takes them around 8 months...

Expensive? In Italy we pay way more than 0.2, even 0.3 at times. And the more you use, the more you pay (per KW/h).

You call that expensive?

Check out the prices here..



0,529€/kWh is the cheapest if you have a single meter "Fixed Price"
0,423€/kWh is the cheapest if you have a single meter "Variable Price"

If you only use at night it's the last column (no one does that) that's a fixed price of 4,16€/kWh or also if you have a dual meter (night tariff and day tariff)

The prices at the bottom are the average prices, variable and fixed prices.

So you all should be happy with those prices...

[Nubminer]

sp_   where do you mine dark I will send my 980's over there overnight as a donation

[Nubminer]

we pay .0857 cents per kwh here pretty cheap I think compared to rest of USA

[Epsylon3]

i just tried myriad at miningpoolhub

ccminer.exe -a groestl -o stratum+tcp://hub.miningpoolhub.com:20479 -u user.worker -p x

and I got all reject for difficulty too low.

I tried to run a pool test for you.

groestl is not for myriad... -a "myr-gr" for that.. there are 3 variants of groestl

[Nubminer]

i just tried myriad at miningpoolhub

ccminer.exe -a groestl -o stratum+tcp://hub.miningpoolhub.com:20479 -u user.worker -p x

and I got all reject for difficulty too low.

I tried to run a pool test for you.

groestl is not for myriad... -a "myr-gr" for that

woops