Closed Is my power supply big enough? Tags: Power Supplies Components Last response: November 22, 2010 10:26 AM in Components Share solidsteel November 14, 2010 9:07:48 PM I have a Corsair TX750. My specs are the following: Lian-Li PC-K62 Dragonlord AMD Phenom II X4 965 Black Edition 3.4GHz C3 Stepping MSI 790FX-GD70 XFX Radeon HD 5870 1GB GDDR5 (Slight overclock 900/1250) 4GB G.Skill Ripjaws DDR3 1600MHz (Maybe 8Gb Soon) Corsair TX750 Western Digital Caviar Black 1TB (Maybe another HDD later) Sont Optaric DVD-Burner Acer H233H 23" 1920x1080 Razer Lycosa Logitech G9 I was thinking of overclocking to about 3.8Ghz on the processor. I know I can do that okay. But I also wanted to pair up my 5870 with another and go crossfire. My power supply is rated for Crossfire/SLI and I have a Crossfire mobo. (Quad SLI/CrossfireX actually lmao) Can I safely do both with 5870 Crossfire and overclocked processor. Or should I do one or the other. Thanks for any help/input More about : power supply big Best solution ct1615 a c 164 ) Power supply November 14, 2010 9:12:25 PM Share you will be fine Test System Specs Core i7 Test System Specs - Intel Core i7 965 Extreme Edition (Overclocked @ 3.70GHz) - x3 2GB G.Skill DDR3 PC3-12800 (CAS 9-9-9-24) - Asus P6T Deluxe (Intel X58) - Seagate 500GB 7200-RPM (Serial ATA300) solidsteel November 14, 2010 10:56:31 PM Thanks for the diagram. So that test system was an overclocked i7 extreme and they swapped in different video cards to test? I have the 125w Phenom not the 140w so will that give me headroom to do a 3.8Ghz Overclock AND crossfire 5870's? Ill probably buy another 1GB XFX 5870. And on top of that maybe two harddrives? Standard SATA Western digitals? I just want to make sure before I do this.. Related resources Is my power supply big enough for crossfire? - Forum Is a 750 watt power supply big enough ? - Forum Is my power supply big enough ?? I NEED TO KNOW ASAP! - Forum Do I have a big enough power supply ? - Forum Big Enough Power Supply ? - Forum Can't find your answer ? Ask ! Get the answer ct1615 a c 164 ) Power supply November 14, 2010 10:59:26 PM correct , same system and they swapped out video cards. you will have no issues with your set up. the above power peaks are taking during a stress test. in gaming your power demands will actually be a bit lower. solidsteel November 22, 2010 3:35:08 AM Best answer selected by solidsteel. Mousemonkey a b ) Power supply November 22, 2010 10:26:04 AM This topic has been closed by Mousemonkey Can't find your answer ? Ask ! Publish Related resources Power Supply Big Enough ? Forum Is my power supply big enough ? Forum What power supply is big enough ? Forum Power supply big enough ? Forum Power supply big enough ? Forum Power Supply Not Big Enough ? Forum How big of a power supply do I need Forum How big a power supply ? Forum How big of a power supply do I need? Forum Is this power supply enough for this gaming build Forum How big of a power supply do I need? Forum Will This Power Supply be Enough Forum 200 watt Pico power supply enough ? Forum Will this setup run skyrim at ultra? Forum HD 5770. Enough power supply? Forum More resources Read discussions in other Components categories Power supplies Sound cards NICs Akasa Antec Cooler Master Cougar DeepCool Enermax !