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Author Topic: Post Your Mining Rig Efficiency  (Read 8328 times)
jjiimm_64
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May 14, 2012, 04:56:39 PM
 #41

its all about voltage....   5x7970 @ 930/800/0.937v   is  830 watts.  2770Mh

im guessing 4x7970 same would be about 650 watts.

Does Powertune have any effect on your system(s) with 7970's ?

i have never used powertune..  if it does anything with volting, it wont work

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bitlane
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May 14, 2012, 05:07:47 PM
 #42

its all about voltage....   5x7970 @ 930/800/0.937v   is  830 watts.  2770Mh

im guessing 4x7970 same would be about 650 watts.

Does Powertune have any effect on your system(s) with 7970's ?

i have never used powertune..  if it does anything with volting, it wont work

What are you using for Voltage control in Windows/CGMiner ?
Your numbers are crazy....I wouldn't even think possible.

jjiimm_64
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May 14, 2012, 05:20:00 PM
 #43

its all about voltage....   5x7970 @ 930/800/0.937v   is  830 watts.  2770Mh

im guessing 4x7970 same would be about 650 watts.

Does Powertune have any effect on your system(s) with 7970's ?

i have never used powertune..  if it does anything with volting, it wont work

What are you using for Voltage control in Windows/CGMiner ?
Your numbers are crazy....I wouldn't even think possible.

instructins are in original post.

boot
use MSI afterburnerbeta.  set volts to 0.937
close afterburner
open cgminer with conf file, no volting   930/800 autofan
make bitcoins
measure wattage
pay power comapany Wink


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May 14, 2012, 05:23:28 PM
 #44

thanks.
I will give that a try once I get my rigs running 5 cards.

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May 14, 2012, 09:25:04 PM
 #45

1x X6500 + 1x Buffalo WZR-HP-AG300H + 2x Fan
400/34W
11.76Mh/W

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May 15, 2012, 12:40:51 AM
 #46

Well, my final numbers are in...for a few 'test rigs' anyway.

For the 4-card 7970 rigs, I started out @ 1,000W at the plug using stock voltage (1.17V)

Here are my latest test results using Afterburner to undervolt, then close it, then start CGMiner....

-------------------------------------------------------------
4x Reference HD7970 @ 1000mhz GPU, 850mhz MEM
Gigabyte X58 I7 Motherboard
Xeon 5506 Quad Core 80W CPU
4GB DDR3, SATA HDD
**740W @ 1.01V, 595 MH/s each Card (2380 MH/s Rig Total)
3.22 MH/Watt

-------------------------------------------------------------
4x Reference HD7970 @ 1000mhz GPU, 850mhz MEM
MSI 790FX-GD70 Motherboard
Athlon II X2 215 Dual Core CPU
4GB DDR3, SATA HDD
**740W @ 1.01V, 595 MH/s each Card (2380 MH/s Rig Total)
3.22 MH/Watt

-------------------------------------------------------------
3x Reference HD7970 @ 1000mhz GPU, 850mhz MEM
Gigabyte X58 I7 Motherboard
Xeon 5506 Quad Core 80W CPU
4GB DDR3, SATA HDD
**540W @ 1.00V VDDC, 595 MH/s each Card (1785 MH/s Rig Total)
3.3 MH/W
-------------------------------------------------------------

Thanks to jjiimm_64 for his proven 'Afterburner' trick Wink
It saved me over 250W per 4-card rig.

Enjoy,
bitlane

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May 15, 2012, 11:11:22 PM
 #47

I'm mining with five Ztex 1.15x and one Ztex 1.15y (spartan 6) boards <1933MH/s> and three 5870 <975 MH/s> giving me total <2908 MH/s> at 560 w altogether.

that makes 11.4 MH/w..... 

need to get rid of my gpus Smiley

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May 16, 2012, 06:28:48 PM
 #48

2 x 5850s
1 x 5870
1 BF Single
--> 1900 MH/s

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May 17, 2012, 04:55:20 AM
 #49

c2d@800Mhz 0,9V, Some old MSI x48 Platinum something motherboard that is undervolted quite a bit for chipset etc, 1 stick of DDR3@1,1V and a WD Green 500GB. Beats my other rigs quite a bit for cpu/motherboard power usage. with just 1 card it's below 80W idle and that's just crazy considering the efficiency for the PSU at those low loads or the HX850 is simply really good even at low loads.

My other two 6 card setups aren't nearly as impressive for board/cpu. Got one Gigabyte GA-990FXA-UD5 with a sempron that sits at around 110W idle with one card and a x58 motherboard that is around 100w with just one.

Think it has to do with the sapphire xtremes as well though, they draw around 3-5W less than your normal 5850/5870 ref board at idle. Or I should say the first revision of the cards does (6 pin connectors at the back of the card, later revision had them on the side of the card) the later revision is worse iirc, also got shittier VRMs for undervolting (no GPU registers in bios).

rograz, how are you volting your 5850/70s below 0.95? I'm not sure any of my non-reference cards are capable of doing this, but I haven't been able to find any info on how to do it. I run Linux, and I think that Radeonvolt might do it, but this only works for reference 5850s. I've got some extremes with the pins on the side, so I guess those are out, but I've also got some non-extremes with the pins at the back. Any insight/direction on this would be appreciated.
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May 21, 2012, 03:54:18 PM
 #50

3x Reference Diamond HD7970
Asus P9X79 Pro
Core i7 3930K 4700 MHz @ 1.52V
32GB DDR3, 2x SSD + 4x SATA HDD
Dual-pumps MCP35X, 7x Scythe Ultra Kaze
Corsair AX1200

Power-saving mode:
400W @ 0.85V, 475 MH/s each Card (1425 MH/s Rig Total)
3.56 MH/Watt

Normal-mining mode:
1070W @ 1.174V, 720 MH/ each Card (2160 MH/s Rig Total)
2.02 MH/Watt

Full-power mining mode:
1350W @ 1.3V, 745 MH/s each Card (2235 MH/s Rig Total)
1.66 MH/Watt

All power numbers at the wall.

jjiimm_64
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May 21, 2012, 04:41:32 PM
 #51

3x Reference Diamond HD7970
Asus P9X79 Pro
Core i7 3930K 4700 MHz @ 1.52V
32GB DDR3, 2x SSD + 4x SATA HDD
Dual-pumps MCP35X, 7x Scythe Ultra Kaze
Corsair AX1200

Power-saving mode:
400W @ 0.85V, 475 MH/s each Card (1425 MH/s Rig Total)
3.56 MH/Watt

Normal-mining mode:
1070W @ 1.174V, 720 MH/ each Card (2160 MH/s Rig Total)
2.02 MH/Watt

Full-power mining mode:
1350W @ 1.3V, 745 MH/s each Card (2235 MH/s Rig Total)
1.66 MH/Watt

All power numbers at the wall.

nicely done.

also, considering the heat and lifespan of cards, I opted for the   930/800/0.937v range.  5x7970.  2767Mh  835watts

could you add the clocks/mem to this list. 

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May 21, 2012, 06:03:41 PM
 #52

Can't seem to undervolt my Sapphire 7970 Embarrassed
The voltage goes down if I reduce the GPU frequency but is locked at a fixed value given a frequency. Here's what I found reported by cgminer :

150->300MHz : 0.8V
301->450MHz : 0.85V
451->600MHz : 0.9V
601->700MHz : 0,95V
701+MHz : 1,17V

So anything above 700MHz drops the efficiency dramatically (and this thing overclocks like there's no tomorrow...).

I use the 2.4 Linux drivers, anyone knows any way to circumvent this limitation ?

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jjiimm_64
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May 21, 2012, 06:10:50 PM
 #53

cant use cgminer for volting.  use MSIafterburner beta

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May 21, 2012, 06:16:09 PM
 #54

cant use cgminer for volting.  use MSIafterburner beta
cgminer works as long as the driver supports voltmod (my Sapphire 5850 Xtreme and Asus 5870 downvolt just fine using cgminer).
Can't use MSIafterburner unless it's ported to Linux (I don't own any Windows license).
I was more thinking about a Sapphire bios update or a Linux beta driver that would enable voltmod.

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jjiimm_64
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May 21, 2012, 06:29:25 PM
 #55

cant use cgminer for volting.  use MSIafterburner beta
cgminer works as long as the driver supports voltmod (my Sapphire 5850 Xtreme and Asus 5870 downvolt just fine using cgminer).
Can't use MSIafterburner unless it's ported to Linux (I don't own any Windows license).
I was more thinking about a Sapphire bios update or a Linux beta driver that would enable voltmod.

I was referring to 79x series cards.  of course you can use cgminer for volting on 5x series. i should have been more clear

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May 27, 2012, 09:00:41 PM
 #56

I'm running a 6970 and a 5970 in my work/gaming machine.

Specs:

Miner:
DiabloMiner stock settings

GPUs:
6970 (850/145) 1.0 V
5970 (725/150) 0.975 V on both chips

PSU:
Corsair TX650W (80+)

Power draw at wall = 350 W
Hashrate = 1000 Mh/s

Mining rig efficiency = 2.86 Mh/J


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May 27, 2012, 09:26:00 PM
 #57

4x 5850 ( 850 / 300 )

CGminer 241

Enermax Pro87 600W

~1400mh/s

No idea how much i get from wall or mh/w...

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AzN1337c0d3r
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May 28, 2012, 02:58:15 AM
 #58

3x Reference Diamond HD7970
Asus P9X79 Pro
Core i7 3930K 4700 MHz @ 1.52V
32GB DDR3, 2x SSD + 4x SATA HDD
Dual-pumps MCP35X, 7x Scythe Ultra Kaze
Corsair AX1200

Power-saving mode:
400W @ 0.85V, 475 MH/s each Card (1425 MH/s Rig Total)
3.56 MH/Watt
725/685 Core/Mem

Normal-mining mode:
1070W @ 1.174V, 720 MH/ each Card (2160 MH/s Rig Total)
2.02 MH/Watt
1100/685 Core/Mem

Full-power mining mode:
1350W @ 1.3V, 745 MH/s each Card (2235 MH/s Rig Total)
1.66 MH/Watt
1200/685 Core/Mem

All power numbers at the wall.

nicely done.

also, considering the heat and lifespan of cards, I opted for the   930/800/0.937v range.  5x7970.  2767Mh  835watts

could you add the clocks/mem to this list. 

Sorry I skipped over this post until now. I have updated the quotation with the clocks/mem

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May 28, 2012, 03:55:02 AM
 #59

3x Reference Diamond HD7970
Asus P9X79 Pro
Core i7 3930K 4700 MHz @ 1.52V
32GB DDR3, 2x SSD + 4x SATA HDD
Dual-pumps MCP35X, 7x Scythe Ultra Kaze
Corsair AX1200

Power-saving mode:
400W @ 0.85V, 475 MH/s each Card (1425 MH/s Rig Total)
3.56 MH/Watt
725/685 Core/Mem

Normal-mining mode:
1070W @ 1.174V, 720 MH/ each Card (2160 MH/s Rig Total)
2.02 MH/Watt
1100/685 Core/Mem

Full-power mining mode:
1350W @ 1.3V, 745 MH/s each Card (2235 MH/s Rig Total)
1.66 MH/Watt
1200/685 Core/Mem

All power numbers at the wall.

nicely done.

also, considering the heat and lifespan of cards, I opted for the   930/800/0.937v range.  5x7970.  2767Mh  835watts

could you add the clocks/mem to this list. 

Sorry I skipped over this post until now. I have updated the quotation with the clocks/mem

Sorry if this is a stupid question, but I've only ever mined with 58xx cards. Why do your memory speeds seem so high? Do 79xx cards not like lower mem clocks? I'll be getting one in the near future, so that's why i'm asking.

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AzN1337c0d3r
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May 28, 2012, 03:57:36 AM
 #60

Sorry if this is a stupid question, but I've only ever mined with 58xx cards. Why do your memory speeds seem so high? Do 79xx cards not like lower mem clocks? I'll be getting one in the near future, so that's why i'm asking.

Afterburner wont let me set the memory clocks lower.

Anyways I believe memory is power-gated on the 7970 when not in use, because I could not find any power consumption difference while mining between 685 MHz @ 1.5V and 1700 MHz @ 1.7V.

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