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1000w enough for 3 r9290's?

post #1 of 10
Thread Starter 
You guys think my EVGA SuperNOVA P2 1000W would be enough if I added one more ASUS Direct CU II R9 290? (See Callisto in Sig)

power supply calculator only recommends 800w for it

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Edited by iPDrop - 10/16/14 at 8:42pm
 
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post #2 of 10
i don't think so. i put together your build in pc part picker (without the extra fans and the adjustments for your OC) and it came to 1043w. i would at least go with a 1200-1500w psu. not only to support your system, but any extras or future add-ons as in; OC'ing, fans, usb devices, ect.
post #3 of 10
yeah 290s are hungry beasts they peak pretty high too and average @ 250 watts, the max @ 365 W while tech says they peak @ 265w

http://www.tomshardware.com/reviews/radeon-r9-290-and-290x,3728-4.html

http://www.techpowerup.com/reviews/AMD/R9_290/24.html

also @ 1.4v - without a volt reader i am just guesstimating that you hit nearly 200W with the 4930k? so assuming average each card is about 250-280W, thats 750-840W, add ontop your CPU that might be anywhere from 150-200? maybe more?
meaning you would be sitting @ 900W/1040W - very close to your threshold. Would be a risky move, but best to consult with twocables or shilka
    
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post #4 of 10
I currently use 3x r9-290s, they are power hungry, yes. With OC I usally sit around 950W when running Unigine. Still, you might want to consider a 1100W+ PSU. Please, dont cheap out on your psu.
post #5 of 10
I have 2 290x's and with a 3930k and with max overclocks on all it pulls around 1200w from the wall on benchmarks, so i could see 3 290's with your 4930k pulling well over that if you overclock, leave them stock and never max out all 3 cards and your cpu 1000w psu would probably be ok but you would be running near max power a lot on that poor psu.
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post #6 of 10
Quote:
Originally Posted by narrdarr View Post

i don't think so. i put together your build in pc part picker (without the extra fans and the adjustments for your OC) and it came to 1043w. i would at least go with a 1200-1500w psu. not only to support your system, but any extras or future add-ons as in; OC'ing, fans, usb devices, ect.

Gonna have to state this for the second time on here today, but you can't trust PCPartPickers wattage numbers. They simply take the TDP of the GPUs and CPU and add them together. They are not a realistic look at the wattage your system will draw. Their numbers are often grossly over-estimated.

For 3 290s I would say go 1200 watts. At 1000 you will be pushing your 12v's limit giving you not a lot of room to OC. 1100 would work, but I'm not sure there are many 1100 watt units out there.
Edited by MapRef41N93W - 10/17/14 at 12:31am
 
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post #7 of 10
Quote:
Originally Posted by MapRef41N93W View Post

Gonna have to state this for the second time on here today, but you can't trust PCPartPickers wattage numbers. They simply take the TDP of the GPUs and CPU and add them together. They are not a realistic look at the wattage your system will draw. Their numbers are often grossly over-estimated.

For 3 290s I would say go 1200 watts. At 1000 you will be pushing your 12v's limit giving you not a lot of room to OC. 1100 would work, but I'm not sure there are many 1100 watt units out there.

i know pc part picker isn't the best, but i made my own adjustments too. either way we came to the same conclusion. which is 1200w min.
post #8 of 10
should grab my 1350W wink.gif lol it is on the market forum wink.gif
    
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post #9 of 10
With the oced i7 i would try to get a 1300w psu or more

Just the 3 cards uses 814w
http://www.guru3d.com/articles-pages/radeon-r9-290-crossfire-review-benchmarks,4.html
post #10 of 10
An EVGA 1300 G2 would be perfect for you, very affordable, and will let you do some light overclocking as well! I love mine, best quality PSU i've owned.
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