I have 4 pc's with 2 x single core processors in each (total of 8 processors) I am looking for motherboards that can take 4 cpu's. I am not sure that they are out there. I have 4 x Xeon 3.2Ghz (Nocona) 604pin E7520 chipset and 4 x Xeon 3.0Ghz (Irwindale) 604pin E7520 chipset processors. If any one knows of a motherboard that can handle these please let me know.
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Check pricewatch. Their website is running slow right now. Tyan and supermicro make some 4 cpu boards, but they are expensive.