Solved Corsair 650TX enough for 5870 in Crossfire Tags: Power Supplies Western Digital Crossfire Corsair Components Product Last response: January 21, 2011 7:16 PM in Components Share Trialsking January 20, 2011 5:25:54 PM I currently have a Corsair 650TX and a 5870 1GB and am thinking of going crossfire because 5870's are dropping in price. My question is will my PS be enough or do I need a 750+. Here is my current PS: http://www.newegg.com/Product/Product.aspx?Item=N82E168... My rig: HAF 922 i5 750 @4.0 Scythe Mugen 2 eVga p55 LE 8GB g.skill ripjaws DDR3 1600 XFX 5870 1GB WD Raptor 10,000 150GB WD Caviar 7200 320GB WD Green Caviar 7200 1.5 TB 3 x 200mm fans 2 x 120mm fans Zalman 6 fan controller More about : corsair 650tx 5870 crossfire clarkjd a b ) Power supply January 20, 2011 5:36:13 PM You might be pushing it w/2 5870's. I'd prefer a 750 or bigger myself to be safe. m 0 l Best solution jsc a c 144 ) Power supply January 20, 2011 5:41:01 PM Yes. You will not have a lot of capacity in reserve though. Figure 25 amps for the video cards and 10 amps for the OC'd CPU. That's about 420 watts. 80 - 90 watts for the motherboard and memory. 50 - 60 watts for the hard drives. Fans - about 20 watts. Share Related resources 5870 + 1TB HDD + Corsair 650TX Combo worth it? - Forum Corsair 650TX--enough for 5870 Crossfire? - Forum Is this 650w power supply enough for 5870 crossfire - Forum Corsair CX750 M Enough for Crossfire R270X? - Forum Radeon HD5870 in CROSSFIRE = good enough to run Battlefield 4 in ultra? - Forum Can't find your answer ? Ask ! Get the answer Trialsking January 20, 2011 5:57:26 PM Ok, I can probably get rid of my 320GB HDD and a 120mm fan to save a few watts. m 0 l clarkjd a b ) Power supply January 20, 2011 6:02:45 PM Trialsking said:Ok, I can probably get rid of my 320GB HDD and a 120mm fan to save a few watts. In terms of power usage by the video cards, you'd only be freeing up 10-15 watts, 1.25 amps. m 0 l Trialsking January 21, 2011 7:16:24 PM Best answer selected by trialsking. m 0 l Can't find your answer ? Ask ! Publish Related resources SolvedDoes Corsair VS650 good enough for crossfire and overclocktable? Forum SolvedIs the Corsair TX 650m enough wattage to crossfire 2x Sapphire HD 7870 xts? Forum SolvedCan I add another 7870 Ghz to the build inside with a Corsair 650tx? Forum SolvedCorsair 650TX issue Forum Solved850w PSU enough for Crossfire 2gb 5870s eyefinity 6 editions Forum SolvedAntec HCG-750 vs Corsair 650TX Forum SolvedCan installing RAM on a Corsair 650TX cause all compnt temps to drop? Forum SolvedCorsair 650W enough for Crossfire? Forum Will my Corsair TX750 PSU be enough for 6950 2GB Crossfire? Forum Best mother board for i7 95-, crossfire ait hd 5870, 6GB corsair dominator GT ? Forum Is My Corsair Gs600 Psu Enough For R7850 Crossfire X Forum Coolermaster Storm Scout + Corsair 650TX PSU - Best Offer Forum Cooler Master Storm Scout + Corsair 650TX PSU - $80 OBO Forum Problem with 12V rail on Corsair 650TX Forum Corsair 650hx or 650tx Forum More resources Read discussions in other Components categories Power supplies Sound cards NICs Akasa Antec Cooler Master Cougar DeepCool Enermax !