Power Consumption Crossfire

[Ghost]

I have an issue. (Don't we all)

At some point this week I will have a 7970 and a 7950 at the same time. I would love to crossfire them just for fun. Will a 750W Bronze Rated PSU be able to handle both of them.

I have;

x6 1100T (125W)

3 HDDs (60W)

2 SSDs (5W)

Watercooling pump (18W)

7950 (150W)

7970 (225W)

So that's a total of; 583W

Add 100W for any overhead so thats; 683W

Could someone double check those numbers for me; they seem a bit low?

EDIT: I based the GPU Power off the maximum theoretical power draw using the connectors provided.

[Wats]

Your PSU is just fine for OC'd CPU + Xfire + loop. Even if you do hit 750W from the wall, if you have a high end PSU (which I'm sure you do) it can go a little bit beyond that.

[Ghost]

Your PSU is just fine for OC'd CPU + Xfire + loop. Even if you do hit 750W from the wall, if you have a high end PSU (which I'm sure you do) it can go a little bit beyond that.

I don't have good experiences about going beyond the limit of a PSU.

[Appelzaadje]

still ur 2e card wil most likely never draw full power at least ive never seen both my cards go full load 2e one does a lot less as far as i can tell

[Wats]

You have more than enough. A really HQ 650 watt PSU could run your set up :d

[Helltech]

You're fine.

[mvitkun]

your numbers are right.

according to techpowerup the highest theirs hit during furmark was

http://www.techpowerup.com/reviews/AMD/HD_7970_GHz_Edition/26.html

273 for the 7970 ghz

270 for the 7970

179 for the 7950

but those are only the very max that it ever hit,and it most likely never got close to that again.so you should be fine.

[marv1336]

Yes you are good to go :)