6970 Crossfire

[dielbe]

Will a 750W corsair tx be powerful enough to run these two? Processor is x4 955 BE, RAM Corsair XMS 4GB, one SSD, one DVD drive

 

[dielbe]

Sorry I posted this in the wrong forum, please delete!

 

[dielbe]

Okay my topic in the correct forum seems to of been deleted so any experience someone could pass on here would be great!

 

[chudley]

Looking at the consumption of a single card on full load = approx 300W and your cpu can take up to 290W at full stress then the answer would be no. Although the 6970s may consume slightly less in Crossfire, I would look at a beefier PSU.

 

[Ayk07]

i got a rosewill 1000watt psu for 100 us dollars on newegg to power my 6870xf set up

http://www.newegg.co...N82E16817182188 130 us dollars now, but still a good price i think

 

[ciksas]

If you are going to overclock it's going to be difficult. 850W PSU, no problem

 

[magicc8ball]

Find a good 1000w min psu and use that. It will allow you to upgrade later if you choose to. I really like corsairs but that is just my opinion

 

[Madbaron]

You really don't want to push the PSU to its limits all the time as the durability of it will fade quite quickly, even though i've read alot that Corsair down play there PSU a little bit it still wont be enough to run everything you want 100%.

The best thing i can suggest would be to use a PSU calculator which should give you a rough estimate of your PSU usage. But also remember that you ideally don't want to Tax you PSU to often if at all to be honest. My rule of thumb is using the calculator and upping the wattage usage by at least 200w for leeway as you will notice with Corsair PSU's that it is most efficient at roughly 50-70%.

http://www.thermaltake.outervision.com

 

[GuyIncognito]

i got a rosewill 1000watt psu for 100 us dollars on newegg to power my 6870xf set up

http://www.newegg.co...N82E16817182188 130 us dollars now, but still a good price i think

For months and without any problems, I've been running crossfire 6870s with an amd 965 and a single harddrive on a 625 watt Enermax psu connected to a ~650 watt ups. Before the crossfire setup, I had a 5850 in there.

 

[GuyIncognito]

Looking at the consumption of a single card on full load = approx 300W and your cpu can take up to 290W at full stress then the answer would be no. Although the 6970s may consume slightly less in Crossfire, I would look at a beefier PSU.

The total power system usage of crossfire 6970's is 596 watts, in the following review:

http://www.legitreviews.com/article/1488/18/

 

[Madbaron]

The total power system usage of crossfire 6970's is 596 watts, in the following review:

http://www.legitreviews.com/article/1488/18/

You also need to include CPU and other power usage gear ontop of the usage for the GPU. If its roughly 600w plus your CPU and other things you might be hitting the 700w or more which i dont think will be a good thing in the long term.

 

[wotevajjjj]

it might work but you really need at least 850 so 1kw psu in order not to stress anything and get good efficiency

 

[GuyIncognito]

You also need to include CPU and other power usage gear ontop of the usage for the GPU. If its roughly 600w plus your CPU and other things you might be hitting the 700w or more which i dont think will be a good thing in the long term.

My interpretation of the meaning of their "total system power usage" was the obvious one. I was assuming they plugged in their watt meter on the input side of their PSU. Did they specify otherwise? I must have missed it.