|
Sjalq (OP)
|
 |
June 03, 2011, 07:33:22 PM |
|
I have a 1200W CoolerMaster gold. This thing emits enough power to run support hardware and 3x6990s (Club 3Ds). Problem is the cables do not match with the graphics hardware PCI-e connectors. The PSU has 4xPCI-e 6+2 connectors and 2xPCI-e 6 connectors. The cards have 2xPCI-e 6+2 connectors each. So now I can power 2 cards, but not the 3rd one...
Does anyone know whether the cards can run on one PCI-e 6+2 connector and one PCI-e 6 connector like normal cards seem to?
|
 mine mine mine mine mine mine mine *Image Removed* 18WMxaHsxx6FuvbQbeA33UZud1bnmD7xY3 |
|
|
|
|
|
|
|
|
|
|
|
"Your bitcoin is secured in a way that is physically impossible for others to access, no matter for what reason, no matter how good the excuse, no matter a majority of miners, no matter what." -- Greg Maxwell
|
|
|
Advertised sites are not endorsed by the Bitcoin Forum. They may be unsafe, untrustworthy, or illegal in your jurisdiction.
|
|
|
|
kloinko1n
|
|
June 04, 2011, 10:01:30 AM |
|
This thing emits enough power to run support hardware and 3x6990s (Club 3Ds).
I dare to disagree with you on that. Or, at least I have some serious doubts. |
|
|
|
|
allinvain
Legendary
 Offline
Activity: 3080
Merit: 1080
|
|
June 04, 2011, 10:07:28 AM |
|
Use a molex to 8 pin adapter or a 8 pin to 6 pin converter and a molex to 8 pin..
|
|
|
|
|
|
Maxxx
Member
Offline
Activity: 70
Merit: 11
|
|
June 04, 2011, 10:26:52 AM |
|
Have you got yours running yet or still ordering? |
|
|
|
|
NetTecture
|
|
June 04, 2011, 10:46:49 AM |
|
Have you got yours running yet or still ordering? Currently getting quotes and asking wild here - if I get the stuff sorted out, I would order next week, put it in poduction after the following weekend (because I bet some parts do not arrive till end of the week). Would be 1 of x  |
|
|
|
|
|
Sjalq (OP)
|
|
June 04, 2011, 09:13:18 PM |
|
Well I am learning a lot. Feels like I'm 14 again I also have my doubts if the power supply will supply a 3rd card now, but we'll test and see, maybe have them all under-perform until we can source more juice. Great fun this mining business! |
mine mine mine mine mine mine mine *Image Removed* 18WMxaHsxx6FuvbQbeA33UZud1bnmD7xY3 |
|
|
|
NetTecture
|
|
June 04, 2011, 09:22:43 PM |
|
Actually it should. Going through some other posts it looks like people get the cards down quite a lot pwoer wise by selectively tuning the frequencies. Moving memory to 300mhz seems to be recommended with people saying cards run around 65 degree centigradem, and IIRC i read somewhere someone said fans at 30% - this indicates the card may run hot on a point (the processors) but memory and shader units are not busy at all... which makes sense |
|
|
|
|
|
bcpokey
|
|
June 04, 2011, 09:34:43 PM |
|
Even without downclocking memory a 1200W is enough to power 3x 6990s, though it is pushing the envelope a little bit. 6990s use ~375Watts per card (300 from 2x 8pin and 75 from PCI-E slot). That's 1125Watts max to be within ATX specifications. In reality they pull less but anyway I digress.
To power 3 6990s you will have to get an 8-pin adapter cable. 8Pin PCIE cables supply 150Watts, 6Pin 75, so do not simply try to plug a 6 pin into the 8pin socket. There are 2 extra ground cables iirc in the 8pin.
|
|
|
|
|
|
