6850 Crossfire Power Requirement Tags: Radeon Crossfire Power Graphics Last response: November 2, 2010 2:56 AM in Graphics & Displays Share cammo2066 November 1, 2010 4:13:35 AM Hi I'm wondering whether my 620W, 22amp (on the 2x12v rails) will be able to run 2 x 6850's in crossfire. I will probably be over-clocking to prevent bottlenecking if there is any. Going by this: http://www.guru3d.com/article/radeon-hd-6850-6870-cross... It states that 2 6850's in Crossfire, with an overclocked processor, cold calthode lights etc, with GPU in FULL Stress uses 393W. That can't be right can it? If it is then I presume I have nothing to worry about. More about : 6850 crossfire power requirement Reply to cammo2066 rolli59 November 1, 2010 8:13:51 PM 600 watt is what manufacturers recommend. Reply to rolli59 m 0 l 17seconds November 1, 2010 8:32:05 PM Trust the all-knowing Guru of 3D. As they usually say, their numbers represent a worst-case scenario and your power requirements will generally be less than their fully stressed system. The 6850's are very thrifty when it comes to power usage. Reply to 17seconds m 0 l Related resources Sapphire Radeon HD 6850 Crossfire-X Required Power? - Forum Power Requirement (R9 270 MSI TWIN FROZR CROSSFIRE) - Forum 7870 Crossfire Power Requirement - Forum Crossfire OC'd 7950 Power Requirement? - Forum ATI Radeon 6850 and 5770 Power supply requirement?? - Forum Can't find your answer ? Ask ! Get the answer Anonymous November 1, 2010 8:38:53 PM 22 amps on the +12v rails is a bit low for my liking, but you could probably scrape by. Reply to Anonymous m 0 l nged72 November 1, 2010 9:53:55 PM What about an i5-760 OC / 6GB Ram / 6850 CF / 320 HD. Will a Corsair tx650w be fine? Reply to nged72 m 0 l 17seconds November 1, 2010 10:17:26 PM nged72 said:What about an i5-760 OC / 6GB Ram / 6850 CF / 320 HD. Will a Corsair tx650w be fine? Yes. Here is Guru3D's power supply recommendation: Radeon HD 6850 x1 On your average system the card requires you to have a 450 Watt power supply unit. Radeon HD 6850 x2 A second card requires you to add another ~130 Watts. You need a 650 Watt power supply unit. Radeon HD 6870 x1 On your average system the card requires you to have a 500 Watt power supply unit. Radeon HD 6870 x2 A second card requires you to add another ~150 Watts. You need a 700 Watt power supply unit. Reply to 17seconds m 0 l rolli59 November 1, 2010 10:17:34 PM nged72 said:What about an i5-760 OC / 6GB Ram / 6850 CF / 320 HD. Will a Corsair tx650w be fine? Yes! Reply to rolli59 m 0 l rolli59 November 1, 2010 10:19:08 PM Anonymous said:22 amps on the +12v rails is a bit low for my liking, but you could probably scrape by. He is saying 22amps on each of the two 12volt rails. Reply to rolli59 m 0 l ct1615 November 1, 2010 10:38:04 PM rolli59 said:He is saying 22amps on each of the two 12volt rails. ...lets hope he is Reply to ct1615 m 0 l Mousemonkey November 2, 2010 2:56:07 AM @mzc, start your own thread. Reply to Mousemonkey m 0 l Ask the community Post an answer Related resources SolvedATI 6850 CrossFire power consumption Forum SolvedCrossfire / SLI Power of 6850 and 550ti Forum SolvedConsidering 2 6850s crossfire but im concerned about power consumption Forum CrossFire 6950 2GB Power Requirement Forum Another Crossfire Power Requirement Question Forum 5850 crossfire power requirement Forum SolvedAMD 7970HD and R9 280x in Crossfire power requirements Forum X1950 Pro Crossfire power requirement Forum Crossfire Power Supply requirement Forum Is my Power supply good enough for 6850 crossfire? Forum Power Supply for HD 6850 (maybe Crossfire) Forum SolvedPower Needed for 2 HIS 6850 Ice Q, crossfired Forum SolvedHD 6850 PSU Requirement? Forum Both Crossfire 5850's AND 6850's NOT working right??? properly powered Forum How much power does a sapphire 6850 require 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 !