Solved Will my PSU let me crossfire Tags: Homebuilt Systems Last response: September 7, 2010 6:08 PM in Systems Share mailmanlove September 7, 2010 5:30:53 PM My PSU is a: OCZ Fatal1ty OCZ550FTY 550W ATX12V v2.2 / EPS12V SLI Ready 80 PLUS Certified Modular Active PFC Power Supply I currently run a GIGABYTE GV-R577SO-1GD Radeon HD 5770 1GB 128-bit GDDR5 PCI Express 2.1 x16 HDCP Ready CrossFireX Support Video Card And want to know if I could crossfire them with my current system. Mobo: 870A - g54 CPu: AMD Athlon II X4 635 Ram: Crucial 2x2GB 1333 DDR3 HDD: Caviar Blue 500mb Lite On cd DVD burner Any help would be greatly appreciated. More about : psu crossfire Best solution jared51182 a b B Homebuilt system September 7, 2010 5:46:53 PM Share Here's a link to a PSU calculator. I just guessed on a few things, but it looks like you should be fine. A single 5770 puts you at about 280W. Cross-fire puts you at about 340W. It is a 80 Plus Cert. PSU, so you should be fine. You may want to try out the calculator with the actual information of your system - like any powered USB items, etc. gordon_81 a b B Homebuilt system September 7, 2010 6:05:32 PM i would always upgrade the psu to be on the safe side, psu crash can take down the whole system trust me you dont want to go there, the psu should work with the crossfire but i wouldnt recommend it. Can't find your answer ? Ask ! Get the answer mailmanlove September 7, 2010 6:08:52 PM Best answer selected by mailmanlove. Can't find your answer ? Ask ! Publish Related resources First Build System, Let me know of the specs! Forum $1600-$1800 Gaming rig, let me know what you think Forum New i7 build let me know what you think Forum About to buy this gaming build 1400$! Let me know what you think. Forum I may be overdoing it let me know what you think pls! Forum What do you guys Think. Please let me know. Forum New Mid-Rage gaming desktop - let me know what you think! Forum New build, please look it over and let me know what ya think. Forum My Dream Machine - let me know what you think Forum Let me tell you a little story..... Forum $1500 Video/Gaming Rig Am I Finished Let me know PLEASE! Forum Pls let me know if anything in this build is gonna make me cry! Forum Can someone explain Crossfire to me ? Forum My Gaming Setup - Let Me Know Your Opinions Experts! Forum My upgrades over the last year - Let me know what you think Forum Dat build... Forum Which best buy computer will I need? Forum 650W PSU Enough?? Forum First timer. Have all parts picked out, will it work? Forum My PSU screwed up my PC need HELP and advice. Forum More resources Read discussions in other Systems categories Homebuilt New Build Prebuilt Cases Power Supplies RAM CyberPower !