Solved Is my PSU big enough for dual 6870s Tags: Radeon HD Graphics Last response: March 23, 2012 10:04 PM in Graphics & Displays Share outlaw00000 March 23, 2012 1:44:27 PM I have a Kingwin Laser 750W and a HD Radeon 6870. Will I need a bigger PSU for a second 6870 or is this one big enough, here's my complete specs: CPU: i7 2600K @4.2Ghz Motherboard: Asrock Z68 Extreme4 Gen3 GPU: AMD HD Radeon 6870 Storage: 120GB Corsair Force GT, 1TB WD Green 5400rpm, 320GB Seagate Barracuda 5400rpm, 1TB WD external HDD Case: Coolermaster HAF 922 RAM: GSkill Ripjaw X 4GBx2 @1866Mhz PSU: Kingwin Laser 750W I also might add a hauppauge HD PVR in the near future More about : psu big dual 6870s bucknutty March 23, 2012 1:57:47 PM THe 6870 only draws 150 watts, so your PSU should be plenty for 2 of them. I cant find a reveiw that talks about the amperage requirments of the 6870. So you will need to check what the max amperage is of your PSU and what the 6870 might draw. m 0 l Best solution Chainzsaw March 23, 2012 2:03:05 PM The 6870s CF require around 55-60 amps on the 12v rails and minnimum 700W PSU. So you should be good to go. Edit: Your PSU has a single RAIL at 62AMPs. You should be fine! Have fun. Share Related resources Is my PSU big enough? - Forum Did I buy a big enough PSU for my build? - Forum Is my Corsair CX430M a big enough PSU for R9 280X? - Forum PSU big enough for this rig? - Forum Is my PSU big enough for GTX 770? - need answers quick - Forum Can't find your answer ? Ask ! Get the answer ___Malachi___ March 23, 2012 2:13:41 PM Well, each 6870 will draw about 150W or so under full load. Combined that's 300W. The PVR isn't going to draw more than 10W. Looks like you've got plenty of spare wattage. m 0 l outlaw00000 March 23, 2012 8:22:03 PM Best answer selected by outlaw00000. m 0 l georgew91 March 23, 2012 10:04:24 PM i was just about to ask this question but i have a antec truepower new 650w. could mine run 6870 cf m 0 l Can't find your answer ? Ask ! Publish Related resources SolvedPSU Big Enough? Forum SolvedIs this PSU Big enough Forum SolvedDo I have a big enough PSU? Forum SolvedBig Enough PSU? Forum SolvedIs this PSU big enough? Forum SolvedIs my PSU big enough? Forum SolvedIs my PSU big enough for SLI? Forum SolvedWill a 600 watt psu that has 12v dual rails with 35 amps combined be enough for a Radeon R9 290? Forum SolvedBig enough PSU? Forum SolvedBig enough PSU? Need advice! Forum A few questions about cf, sli and whether my psu is big enough Forum SolvedIs my PSU big enough? Forum Is my psu big enough for my system Forum Is my PSU big enough for my build Forum SolvedBig enough psu? Forum More resources Read discussions in other Graphics & Displays categories Ati GPUs Graphics Cards Gtx HD Monitors SLI Crossfire Tuner Cards Radeon Video Diamond Multimedia Matrox Nvidia Palit PowerColor Asus Games !