This project was really nice I wanted to do some serious multi-gpu benching on SandyBridge 2600K. I decided to use Asus P8P67 WS Revolution which enables using Quad CrossfireX with 4x PCIE X8. My choice was of course 4x 6970 referent design. Firstly, I was hand-picking HD6970 which works on LN2 and overclocks. All in all, I had tested 11 pieces of VGA before I found 4 GPUs which overclock and work without artefacts on minus temperatures. Finally, 2x HIS did 1200 GPU and 2x Vertex did 1250 MHz. I was very happy to achieve 1200 MHz GPU on 4x 6970
2600K @ SS 5.6 GHz @ 1.63v
P8P67 WS Revolution
2x2 GB Patriot 2400 CL9
4x HD6970
Antec 1200W TruePower Quattro & Fractal Newton 1000W
Lian-LI Benchtable
Goodram Play 62 GB SSD
Some photos of setup
and preparations for ln2
Unfortunately, my best 2600K only did 5.6 GHz and now is dead but it helped to achieve quiet good result in 3DMark 03
7th result according to Hwbot
The best result on 2600K
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