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Will my PSU handle xfire 6850's?

Last response: in Components
February 29, 2012 5:37:04 PM

Here is my PSU:

My friend is going to buy my gtx 465 for 100 bucks and i got about 170 bucks extra lying around, it seems to me the best bang for the buck is buying 2 6850's in xfire mode (also my MB supports xfire) but i was just wondering if you think my PSU would support it. The 6850's only take one 6 pin each so that is covered at least, and from the random benchmarks ive seen they only consume around 230 watts at load, so in theory it should work ya?

Any advice is appreciated thx.

More about : psu handle xfire 6850

a b ) Power supply
February 29, 2012 5:44:06 PM

Hi :) 


All the best Brett :) 
a b ) Power supply
February 29, 2012 5:45:48 PM

I'd say so.

In this review they get under 400w power consumption using a power hungry overclocked i7-965 and 6850 crossfire.

6850 is a pretty efficient GPU and doesn't require many amps, and you have 40 on the 12v.

You'll be running decently high usage, but not too bad IMO if your PSU isn't too aged.
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February 29, 2012 5:57:35 PM

My rig is only about 6-7 mo's old, built it around september i think. So i got one guy saying a clear "no, i cant even believed you suggested this!" and another guy thinking it could work.

Anyone else wanna come in and break the tie? :p  Also, i run a 2500k at stock voltage and a standard 7200 rpm hard drive, so no extra power consumers i can think of.

Best solution

a c 1106 ) Power supply
February 29, 2012 11:03:39 PM

For a system using two Radeon HD 6850 graphics cards in 2-way CrossFireX mode AMD specifies a minimum of an 600 Watt or greater power supply. The power supply should also have a combined +12 Volt continuous current rating of 35 Amps or greater and have at least two 6-pin PCI Express supplementary power connectors.

Total Power Supply Wattage is NOT the crucial factor in power supply selection!!! Total Continuous Amperage Available on the +12V Rail(s) is the most important.

The Antec High Current Gamer 520W (HCG-520), with its +12 Volt continuous current rating of 40 Amps and with two (6+2)-pin PCI Express supplementary power connectors, is sufficient to power your system configuration with two Radeon HD 6850 in 2-way CrossFireX mode.
a c 273 ) Power supply
February 29, 2012 11:05:49 PM

Yep it should work imo.
The full system load would be under 400W.
February 29, 2012 11:20:06 PM

heres your solution:
dont waste your money on crossfire. unless you want to pay for hours of troubleshooting, headaches, and lack of support.

considering your asking this question here, youre probably not ready for the above mentioned, and should go with a single card solution.
March 1, 2012 2:37:23 AM

Thanks! I think i am gonna do it. And to the guy telling me not to do xfire, i have a budget of around 270 bucks and i think two 6850's will blow the heels off of any single card in that price range. Feel free to correct me as i am not an expert, but in my bit of research i did it seemed 2 6850's would sufficiently stomp a 448 core 560ti (about same price as 2 6850's).
March 1, 2012 2:48:06 AM

Best answer selected by scotty99.
March 1, 2012 6:12:05 AM

Jesus you posted in this thread too? You a stalker? O.o

And also, 6850's in xfire are no where near CLOSE to a 580 in ANY game lol.