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Title: PSU for 2 x 6970 + 2 x 6990 (liquid cooled) Post by: cvicisso on June 22, 2011, 08:42:31 PM Any ideas how big of a PSU I'll need for such a beast?
Title: Re: PSU for 2 x 6970 + 2 x 6990 (liquid cooled) Post by: qed on June 23, 2011, 12:45:41 AM Get a second motherboard is the only solution. You will most likely fry the pci express slots.
Title: Re: PSU for 2 x 6970 + 2 x 6990 (liquid cooled) Post by: sc8nt4u on June 23, 2011, 12:59:22 PM Get a kill-a-watt.
I've been overestimating my power consumption before I bought a kill-a-watt. Before I bought my kill-a-watt, I estimated my systems to be consuming 1450w~, but really the two systems below pull 1100w together. Note that I undervolt and overclock my GPUs. I've tried to lower CPU voltage as well, but really you're not saving that much power. 1x i7 930 @ 2.8ghz 1.184v (3 cores disabled) 2x 5970 @ 750/300 1.00v (333 Mhash/ea) 3x 1TB Samsung F3 1x 90gb Vertex 2 2x 2GB DDR3 ASUS P6T SE Xion 1250w 1x Sempron 140 @ 2.8ghz .95v 3x 5850 775/300 @ 1.00v (310 Mhash/ea) 1x 2GB DDR3 1x Random HD PC Power and Cooling 610w PSU 2.262 Ghash for 1.1kW is pretty efficient. Title: Re: PSU for 2 x 6970 + 2 x 6990 (liquid cooled) Post by: padrino on June 25, 2011, 01:33:35 AM Get a second motherboard is the only solution. You will most likely fry the pci express slots. Use extenders with molex to offload the slots or get a board built to support 4 x16 cards (specifically calling out triple SLI or quad nvidia) as it should be built to push the load. Title: Re: PSU for 2 x 6970 + 2 x 6990 (liquid cooled) Post by: shakaru on June 25, 2011, 01:43:19 AM Do this
Required items 2x PSU 1x Electrical tape. 1x Wire stripers Take the first psu that will goto the board and locate the green wire on the 4th pin and any ground on the second psu do the same but cut the wires at the atx connector. Strip the two wires on the 1st psu a bit so you can attach the power on and ground to them. Seal splices and TADA. DUAL PSU Title: Re: PSU for 2 x 6970 + 2 x 6990 (liquid cooled) Post by: dinker on June 27, 2011, 07:19:49 PM This one should do it! 8)
http://newegg.com/Product/Product.aspx?Item=N82E16817256054&cm_re=power_supply-_-17-256-054-_-Product |