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Topic: Mhash/Watt for Complete Systems - page 2. (Read 6882 times)

donator
Activity: 362
Merit: 250
February 05, 2012, 03:40:01 PM
#36
I just spent some time optimizing one of my rigs -

890FXA-GD70
Sempron @ 1600mhz
Cooler Master 1000w 80+Gold
All mobo options disabled, USB drive/linuxcoin

3x 5970 + 1x 5870, undervolting & underclocking all the cards
2317Mh/s @ 880w - 2.63Mh/J (measured with kill-a-watt)

Smiley
newbie
Activity: 37
Merit: 0
February 05, 2012, 10:45:31 AM
#35
720 MH/s @ 335W ~ 2,15 MH/J

measured with Voltcraft Energy Check 3000

Setup:

MSI GD70
AMD X2 250
2 GB Corsair XMS 1333 MHz
250 GB  Western Digital 2,5" HDD
HD 5850 rev 2 @ 850/150/1.088V
HD 5850 rev 1 @ 850/150/1.088V
PSU: Cougar S700  (230V EU/Germany)

Cooling/Case:
modified Cooler Master CM690 rev 1
1x Scythe Big Shuriken (passive)
2x Arctic Accelero S1 Plus
2x Noctua NF-S12B FLX
1x Noctua NF-P14 FLX
1x Noctua NF-P12-1300
2x Cooler Master 120 mm

temperature GPU: 55 / 42 C°
temperature System/CPU: ~ 32 C°

CPU undervolting/clocking: no
disabled onboard devices: Audio / Serial Port
GPU overclocking: 765->850 / 725-> 850
GPU over/undervolting: no
CPU Load: ~ 0-9%
GPU Load: 99%
Miner Software: cgminer 2.2.1
Driver / APP SDK: 11.12 / 2.5
OS: Windows 7 x86_64 Ultimate

Power Draw start up : ~ 380W
Power Draw boot : ~ 180W
Power Draw idle: ~ 130W
Power Draw mining: 335W


 Grin






bob
newbie
Activity: 8
Merit: 0
February 04, 2012, 04:15:32 PM
#34
830 MH/s / 520 W = 1.6 MH/J

3x5830, 80+ PSU, 120V

measured with kill-a-watt
bob
newbie
Activity: 8
Merit: 0
February 04, 2012, 04:10:35 PM
#33


TADA ....

http://www.toolorbit.com/image/Klein-Tools/Klein-Tools-CL2000-G0.jpg

Well I measured amps & volts.  Remember the two legs of 240V circuit in US wiring are out of phase so to read current you need to clamp just one conductor. 

They make adapters like this:
http://www.service.kleintools.com/Marketing/Catalog_Imagery/69400_ICON.JPG

but I have the rigs connected to a PDU using C14 to C13 cables and I doubt anyone makes an adapter so I modified one power cable which I use for testing only.

Did you take power factor into account when you measured volts and amps separately?  I'm running at PF about .9 so maybe that caused the difference if you measured different ways for 120 vs 240.
member
Activity: 108
Merit: 10
February 03, 2012, 04:38:48 AM
#32
I will be using enermax platimax 1500W, i think 1 could take 5 cards, but for now it will be 4 per rig  because i didnt order pcie 1x to 16x extenders..
legendary
Activity: 966
Merit: 1000
February 02, 2012, 08:01:49 PM
#31
5x 5850

2,06 MH/s / Watt -> 371MH/s @ 180Watt
legendary
Activity: 1876
Merit: 1000
February 02, 2012, 07:53:40 PM
#30
Ok then its all fine if you can run 5x7970 on extenders without molexes then i can do 4 with np Tongue I have asus sabertooth 990fx mobos with four pcie 16 slots, i guess it will work, if not i report here something got fried Cheesy

I tried your volt/freq but for me it crashes, what manufacturer is your 7970, Sapphire (i got sapphires..) or something else ?

xfx will do pics
we should move this to the 7970 thread, this is for Mh/J
http://imageshack.us/g/832/img0536sx.jpg/




PSU?
member
Activity: 108
Merit: 10
February 02, 2012, 06:06:10 PM
#29
Ok then its all fine if you can run 5x7970 on extenders without molexes then i can do 4 with np Tongue I have asus sabertooth 990fx mobos with four pcie 16 slots, i guess it will work, if not i report here something got fried Cheesy

I tried your volt/freq but for me it crashes, what manufacturer is your 7970, Sapphire (i got sapphires..) or something else ?
legendary
Activity: 1876
Merit: 1000
February 02, 2012, 05:43:56 PM
#28
jjiimm can you post core voltages at which you got these frequencies of your cards?
And what do you mean by high 70's? 78? Smiley

The volts are listed with the clocks..  1.143 and 1.125  Please do not take my volts as the 'optimum'  I do not follow a very scientific approach to arrive at these numbers..

Ah lol somehow i didnt see the voltages Smiley
Well if its stable then its good enough will try em out, what brand 7970 u got?

edit: Do you use pci-e extenders? With or without molexes?
Im asking cuz im waiting for extenders to setup 4x 7970 rigs, but i bought ones without molexes so i wonder if im gonna have to put them there myself..
I have never used powered ext. i do not think we need them anymore...  maybe with the older mobos?,  I always use extenders for cooling.
member
Activity: 108
Merit: 10
February 02, 2012, 05:18:05 PM
#27
jjiimm can you post core voltages at which you got these frequencies of your cards?
And what do you mean by high 70's? 78? Smiley

The volts are listed with the clocks..  1.143 and 1.125  Please do not take my volts as the 'optimum'  I do not follow a very scientific approach to arrive at these numbers..

Ah lol somehow i didnt see the voltages Smiley
Well if its stable then its good enough will try em out, what brand 7970 u got?

edit: Do you use pci-e extenders? With or without molexes?
Im asking cuz im waiting for extenders to setup 4x 7970 rigs, but i bought ones without molexes so i wonder if im gonna have to put them there myself..
legendary
Activity: 1876
Merit: 1000
February 02, 2012, 04:44:49 PM
#26
jjiimm can you post core voltages at which you got these frequencies of your cards?
And what do you mean by high 70's? 78? Smiley

The volts are listed with the clocks..  1.143 and 1.125  Please do not take my volts as the 'optimum'  I do not follow a very scientific approach to arrive at these numbers..
member
Activity: 108
Merit: 10
February 02, 2012, 04:08:04 PM
#25
jjiimm can you post core voltages at which you got these frequencies of your cards?
And what do you mean by high 70's? 78? Smiley
rjk
sr. member
Activity: 448
Merit: 250
1ngldh
February 02, 2012, 03:53:02 PM
#24

Care to share with us that magic solaris or whatever it is called server that does 10 GPUs in one mobo ? Pics would be nice  Grin

Thanks !
There are 2 mobos, not 1....
hero member
Activity: 518
Merit: 500
February 02, 2012, 03:51:36 PM
#23
I can't even get one rig stable with three 5970's and 2 seasonic gold 750watt joined with a lian li connector

Worse case scenario ... ebay the 2x 750 (or try these forums) and buy a single 1200W.  1000W is all you need but 1200W gives you the option to expand to 4x5970s.

a silverstone 1200 will NOT run 4 5970's overclocked to 820.  a seasonic 1250 will

Dat:
  in reference to the 10 gpus  it has 2 mobos and 2 operating systems..  . I read somewhere that solaris will load Xnumber of gpus?
Quote

my new rig(or is it 2 rigs joined by a common psu)  I will be easily able to do this..

it is 10x7970  3psu's  6790 Mh.  I will calculate the watts tonight.


Care to share with us that magic solaris or whatever it is called server that does 10 GPUs in one mobo ? Pics would be nice  Grin

Thanks !
legendary
Activity: 1876
Merit: 1000
February 02, 2012, 03:51:22 PM
#22
edit:
 my new rig(or is it 2 rigs joined by a common psu)  I will be easily able to do this..

it is 10x7970  3psu's  6790 Mh.  I will calculate the watts tonight.


Sounds like 1 PSU per mobo and a third for some of the cards. Good idea actually.

IT IS:


power  220V
Psu's   3 seasonic  2x1250 1x650
mobos  2
7970    10 (5 each mobo)

the 1250's are powering 4x7970 + mobo + hd
the 650 is powering 1 7970 on each mobo

#1 clocks  1143 volts   1162/685  core/mem
#2 clocks  1125 volts   1125/685  core/mem

Mhash #1  3453
Mhash #2  3340  

total 6790+  

uptime, 170k accepted shares..


The rig(s) are still up and stable, albiet running a little warm for my tastes (high 70's)
legendary
Activity: 1876
Merit: 1000
February 02, 2012, 03:46:32 PM
#21
I can't even get one rig stable with three 5970's and 2 seasonic gold 750watt joined with a lian li connector

Worse case scenario ... ebay the 2x 750 (or try these forums) and buy a single 1200W.  1000W is all you need but 1200W gives you the option to expand to 4x5970s.

a silverstone 1200 will NOT run 4 5970's overclocked to 820.  a seasonic 1250 will

Dat:
  in reference to the 10 gpus  it has 2 mobos and 2 operating systems..  . I read somewhere that solaris will load Xnumber of gpus?
Quote

my new rig(or is it 2 rigs joined by a common psu)  I will be easily able to do this..

it is 10x7970  3psu's  6790 Mh.  I will calculate the watts tonight.

donator
Activity: 1218
Merit: 1079
Gerald Davis
February 02, 2012, 03:16:52 PM
#20
I can't even get one rig stable with three 5970's and 2 seasonic gold 750watt joined with a lian li connector

Worse case scenario ... ebay the 2x 750 (or try these forums) and buy a single 1200W.  1000W is all you need but 1200W gives you the option to expand to 4x5970s.
hero member
Activity: 535
Merit: 500
February 02, 2012, 03:01:37 PM
#19
Jesus, Jimm is the king of multiple psus. I can't even get one rig stable with three 5970's and 2 seasonic gold 750watt joined with a lian li connector and he just uses f'in paper clips to short the 24 pin to make his work.

There must be some major power fluctuations or issues at my brother-in-laws house where these rigs are  or something. Extenders maybe? Hell I don't know, but Jimm is crazy.

I'd be happy to get this rig stable:
3 5970 at 800/300
MSI 890FXA-GD70
sempron 145
2 x Seasonic 750 watt gold psus with connector
2 Gb ram.
open case on pci e x16 powered or unpowered extenders(I have both)
linuxcoin on 16GB flash drive with cgminer.

oh well, maybe someday.
rjk
sr. member
Activity: 448
Merit: 250
1ngldh
February 02, 2012, 02:48:35 PM
#18
edit:
 my new rig(or is it 2 rigs joined by a common psu)  I will be easily able to do this..

it is 10x7970  3psu's  6790 Mh.  I will calculate the watts tonight.


Sounds like 1 PSU per mobo and a third for some of the cards. Good idea actually.
donator
Activity: 1218
Merit: 1079
Gerald Davis
February 02, 2012, 02:23:59 PM
#17
it is 10x7970 3psu's  6790 Mh.  I will calculate the watts tonight.

I didn't notice this.  IIRC nobody has gotten more than 8 GPU working due to limits in AMD drivers.  This includes both windows & linux, 32 bit and 64bit.  At one time AMD had a 4 GPU limit on windows but thankfully fixed that.
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