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 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. Share 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. m 0 l Can't find your answer ? Ask ! Get the answer mailmanlove September 7, 2010 6:08:52 PM Best answer selected by mailmanlove. m 0 l Can't find your answer ? Ask ! Publish Related resources SolvedPlease let me know new PSU needed for my HD7750 graphics card by looking at my SMPS photo Forum Catalyst 10.2 and Crossfire Profile does not let me enable Crossfire Forum Will it let me crossfire? Forum Computer won't post...this is interesting...think it's the PSU...please read and let me know what you all think Forum Will my psu be able to let me run on my 42" 3d tv? Forum SolvedWill this PSU allow me to Crossfire? Forum SolvedComputer Build - Let me know what else I need Forum SolvedBeen working on this build for months now, first build for a gaming PC. Let me know what you think, if you like? Forum SolvedReplacing motherboard because carmel2 wont let me upgrade gpu Forum SolvedCan I Run Arma 3 how much fps let me know :) Forum SolvedHow do I get to administer when it won't let me log in Forum SolvedGreatest ham potato machine of all time $1200-1600 PC build, let me know what you think Forum SolvedConvincing My Parents To Let Me Build a PC vs. Buying a Gateway at Walmart Forum SolvedMy computer lets me format my card I have a sandisk 64gb, but it wont let me change the capacity of the it. The computer give Forum SolvedOrdered the wrong CPU will Newegg let me return it?! Forum SolvedPlease check this way of thermal past apply and let me know your thoughs Forum SolvedMy son cracked the screen on tablet, it still works, but it won't let me login using my finger Forum Solvedhow do I access files on a CD that Office won't let me access Forum SolvedAll of a sudden my computer will not let me open my control panel, do a system restore. open and us or even defrag my system. Forum SolvedFirst time build, Let me know if you see issues, or where i can cut costs! Forum More resources Read discussions in other Systems categories Homebuilt New Build Prebuilt Cases Power Supplies RAM CyberPower !