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. 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. Related resources 5870 + 1TB HDD + Corsair 650TX Combo worth it? - Forum Corsair 650TX PSU work with dual Radeon 4870 1GB 256-bit GDDR5? - Forum Corsair 650TX - Forum Corsair 650TX-- enough for 5870 Crossfire ? - Forum Recommended minimum psu for crossfire ati 5870 2gb - 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. 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. Trialsking January 21, 2011 7:16:24 PM Best answer selected by trialsking. Can't find your answer ? Ask ! Publish Related resources: ForumWould Corsair tx650w work for HD4870 CrossFire ? ForumATI RADEON 4870 CROSSFIRE ISSUE HELP! Do i have ENOUGH POWER? ForumAntec HCG-750 vs Corsair 650TX ForumATI 5870 Give Away - Winner just confirmed:) Hope you had fun! ForumCoolermaster Storm Scout + Corsair 650TX PSU - Best Offer ForumCorsair 650hx or 650tx Forum850w PSU enough for Crossfire 2gb 5870 s eyefinity 6 editions ForumPSU and CPU heat - i7/stock fan + Corsair 650TX ForumWhich is better, go with 5850/ 5870 then cf or gt300? ForumNew system based on 5850/ 5870 ($1000ish) ForumVX550 enough for a HD 5870 ? ForumThermaltake 850w PCI-E question ForumIs my PSU good enough? Forum[Solved] 650W enough? Forum[Solved] Corsair 400CX enough for C2D-3GHz+HD5770 + 4 HDDs ? More resources Read discussions in other Components categories Power supplies Sound cards NICs Akasa Antec Cooler Master Cougar DeepCool Enermax !