Possible PSU deficiency? GPU power question

[pialia]

Hi folks

 

My signature is updated with the current specs as of right now, but I'm waiting on after xmas sales on hdds to fill out with 5-6TB of storage space so take that into account for my upcoming question.

Long story short, I'm either buying an aftermarket 290(and adding another shortly thereafter) or an aftermarket 290x(same dealio), more or less waiting for benchmarks of all the different versions and I'll try to make the most educated decision when I have the information at hand.

Anyway, my question being: will my single 1000W PSU be able to handle it? I've read that the reference models have been drawing 300w+ on some occasions.

If the answer to that question is no, is there a downside to adding another PSU to my rig(as I'm running a Corsair 900D) I guess I could kind of fit one Or is it better to upgrade to a more capable PSU?

Thanks

PS. If this isn't strictly a graphics cards-question I apologize and feel free to move the thread.

[TheRoss0411]

1000w is overkill

[lachyman]

Your 1000W PSU is way overboard, a decent 750W unit would run those cards fine, 850W if you wanted to OC. No need to upgrade.

[pialia]

Your 1000W PSU is way overboard, a decent 750W unit would run those cards fine, 850W if you wanted to OC. No need to upgrade.

Really? That's a relief. I wasn't aware the remaining part of my entire system would draw that little power. Is there any way to actually map what the rest is drawing? CPU, fans, hdds etc.

[eshbop]

A good 850W can run 2 290x's with an OC'ed LGA2011 CPU.

[eshbop]

Really? That's a relief. I wasn't aware the remaining part of my entire system would draw that little power. Is there any way to actually map what the rest is drawing? CPU, fans, hdds etc.

If you have Ivy or Haswell, it won't be more than 120W.

[lachyman]

Really? That's a relief. I wasn't aware the remaining part of my entire system would draw that little power. Is there any way to actually map what the rest is drawing? CPU, fans, hdds etc.

Well those 2 cards would eat around 300W each, the LGA2011 CPU can eat max 150W and other things eat very little power.

[pialia]

Figured this was a sort of apt and sadly hilarious update to my original post:

 

1000W doesn't seem so "way overboard", at least going by these benchmarks.

 

Edit:

 

Source: AnandTech

[R4STABAN]

Total system power of 384 watts while gaming. Your psu will be fine with crossfire. Your ears wont.

[pialia]

Total system power of 384 watts while gaming. Your psu will be fine with crossfire. Your ears wont.

Ah, total. That's kind of odd to have in a review and comparisons of graphic cards. Figured it was per graphic card, derr.