Crossfire 6850s, i2500k OC, and 600W PSU

[andvruss]

I have an OCZ StealthXStream 600W ATX12V PSU which has served me faithfully for 2 years now. I recently upgraded my computer, and have yet to have problems with the current setup. Just looking online, however, I am getting conflicting reports whether this PSU will be able to handle 2 6850s in Crossfire, and well as OC my i2500k to perhaps 4.0 Ghz, from some people telling me that it will easily do such things, and others saying the opposite. Thanks very much in advance. My current specs are as follows:

OCZ StealthXStream 600W ATX12V 20/24PIN
Mushkin Enhanced Silverline Stiletto 16GB [4X4GB]
Sapphire Radeon HD 6850
Intel Core i5 2500K Quad Core
Corsair Cooling Air Series A50 Performance CPU Cooler
MSI P67A-G43 (B3) P67 ATX LGA1155
Western Digital Caviar SE16 640GB SATA2 7200RPM
Antec Lanboy Case
Random DVD Writer

 

[Spikesoldier]

6850 is a 127w TDP.

traditionally i would glance and say 600w with your setup and CF is pushing it, but considering the 2500K isnt as power hungry as previous generations, and the 6850 isnt power hungry either, the 600w sounds like just enough - albeit with two years of service on its shoulders.

 

[mrSHEiK124]

Can't hurt to try it right? Hook it all up. Start Prime95, start Furmark (does it work on ATI cards? Sorry, green team over here). If it doesn't shut off/blow up - you're good!

 

[Jhatfie]

You should be able to pull it off. Guru3d had a article a ways back that recommended a 650W for 6850's in crossfire. Granted that was a recommendation factoring in some overhead. Your 600W would be working pretty hard, but it should be able to power them with your OC on your cpu.

http://www.guru3d.com/article/radeon-hd-6850-6870-crossfirex-review/4

 

[deimos3428]

Probably fine. For reference, I'm running a similar system with a Phenom II 955 + 6850 CF on a 650W without issue.

 

[Zargon]

i5 2500k OC'd over 4, 2x5870, 650w psu

 

[tomoyo]

Actually this setup should work perfectly fine on even a high quality 500w. Now mind you, this OCZ psu is on the mediocre side, but since it's 650w, should be more than enough.

 

[dakU7]

I used to run my first sig rig with a crappy 700W modXstream which pulls ~550W, so as long as it's a quality 600W, you should be good.