so, you all can see my current system in my profile. unfortunately, my watercooler died, so that is no more. i would be getting the same watercooler, case, powersupply no matter what option i choose, so those are not an issue. what i do need help in choosing, is what processor(s), mobo and ram i chould get. here are what i have been thinking for upgrades: option 1: opteron server mobo with dual opteron processors (4 cores) 4gb ecc registered ddr2-800 ram sli is possible in future cost: 1700 option 2: quad fx system with dual fx-72 socket 1207fx processors (4 cores) 4gb ddr2-800 sli is possible in future cost: 1800 option 3: server mobo with dual xeon 5310 quad core processors (8 cores) 4gb ecc registered ddr2-800 ram no sli possible cost: 2000 option 4: upgrade current processor to a socket 775 quad core q6600 (4 cores) add 2 more gb memory maybe add second 8800gtx and go sli? cost: 1300 (without getting second 8800gtx), 1800 with second 8800gtx.