Does an LGA 1156 i7 860 *need* 8-pin power? Tags: Homebuilt Intel i7 CPUs Power Systems Last response: December 2, 2009 8:18 PM in Systems Share xxxshooter December 2, 2009 7:47:41 PM Hey, I'm building a computer on a Gigabyte P55 and the PSU I got only has 1 4-pin CPU power connector... The motherboard's CPU power connector has 8 pins. Is 4-pin sufficient? More about : lga 1156 860 pin power xxxshooter December 2, 2009 8:11:19 PM (Due to the fact that Tom's won't let me edit my post i'm double posting) More specifically I'm using a P55-UD3R with an i7 860. Also, when turned on a unending high-pitched whine is emitted from the speaker. Thanks m 0 l aford10 a b B Homebuilt system a b à CPUs December 2, 2009 8:18:39 PM Yes, the 4 pin CPU power connector will work just fine in the 8 pin motherboard port. It should be keyed to only fit one way. m 0 l Can't find your answer ? Ask ! Publish Related resources Older Thermalright XP-120 and an LGA 1156 i7 860? Forum does P55A-UD3R motherboard with socket LGA1156 work with i7 3770 k? Forum gainward gtx 680 2nd hand - does it need both 6pin + 8pin power? Forum More resources Read discussions in other Systems categories Homebuilt New Build Prebuilt Cases Power Supplies RAM CyberPower !