Check your motherboard manufacturers site for info, they should have a processor list there for your specific board model. Providing both cpu's are Socket 754 though I don't think there should be a problem, should just be a straight swap with no reinstall.
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1100t on M5A99x-EVO with 2x4gb and 6870 running Win7 on Force120 ssd in Corsair 600t cooled by H100. Folding for team 34106