What power supply will I need for 2 R9 290's?

[Alexb123]

I am able to pick up an R9 290 for £180 which is a really good deal so i might end up getting 2. I was just wondering which power supply I will need as these cards consume lots of power. Would a quality 850w psu be enough?

[Sir Asvald]

I am able to pick up an R9 290 for £180 which is a really good deal so i might end up getting 2. I was just wondering which power supply I will need for this as these cards as they consume lots of power. Would a quality 850w psu be enough?

at least 750w or 800w

[Misanthrope]

This cards can get above 300 watts each so that will leave 250 w for the rest of your system: not unreasonable as long as you don't have a very hungry processor and/or you're not planning to overclock anything.

 

If you do plan to overclock, then go for a 1000w unit instead.

[iamdarkyoshi]

my 750w evga supernova was overkill for two hd 7950s

[Guest]

Something like a EVGA Supernova 750w/850w G2 should be perfect.

 

(I cant decide and neither can this forum apparently).

[_JohnB330ci]

I had a 750W running two and a 8350 before/

[PineappleHolidays]

At least a 800w, but that depends on the rest of the system ( you could go for a 750w, but that would be running it at close to max 24/7 )

 

counting 600w for both 290's.

[Alexb123]

Thanks for the help. How would this power supply be?

http://www.amazon.co.uk/EVGA-Supernova-850W-Power-Supply/dp/B00LM1V0EQ/ref=sr_1_3?s=computers&ie=UTF8&qid=1436797043&sr=1-3&keywords=850w+power+supply

[iamdarkyoshi]

At least a 800w, but that depends on the rest of the system ( you could go for a 750w, but that would be running it at close to max 24/7 )

 

counting 600w for both 290's.

my 750 watt never even got warm during full load. my i5 2500 must have hardly been a burden on it.

[FuzzyYellow]

http://extreme.outervision.com/psucalculatorlite.jsp

[SkywardKkalox]

750-800Ws 

[SkywardKkalox]

Thanks for the help. How would this power supply be?

http://www.amazon.co.uk/EVGA-Supernova-850W-Power-Supply/dp/B00LM1V0EQ/ref=sr_1_3?s=computers&ie=UTF8&qid=1436797043&sr=1-3&keywords=850w+power+supply

This is better.

 

http://www.amazon.co.uk/EVGA-SuperNOVA-750W-Power-Supply/dp/B00J01K3E8/ref=sr_1_1?s=computers&ie=UTF8&qid=1436797683&sr=1-1&keywords=750w+Psu+evga

[FuzzyYellow]

http://extreme.outervision.com/psucalculatorlite.jsp

 

you should be fine with a 750W as long as it's halfway decent.

[Dalbaa]

PSU wattage is always overestimated. When you compare the theoretical amount the system needs with what it actually uses it's always a lot less. I personally have an 850W because it has way more than i need which means that is doesn't run at full capacity and therefore doesn't get as hot, or as laud but considering you're going to be running two 290's noise probably isn't as big a problem. 750W is fine and anything above that is just bonus so that it isn't as demanding for it

[PudgyAstronaut]

If you plan to run it a lot and keep the computer for a few years, I would invest in a 1000W PSU, I don't see any reason to save $25-$30 and be right on the edge of your PSU cababilities and risk failure. Strictly speaking, a 750W PSU would run them, and an 850W PSU might be okay long term, but I wouldn't feel comfortable. Just make sure whatever you get is a good quality unit. If a GPU dies you might need to replace the GPU, but if a PSU dies you might need to replace everything in extreme cases.

[Aniallation]

Thanks for the help. How would this power supply be?

http://www.amazon.co.uk/EVGA-Supernova-850W-Power-Supply/dp/B00LM1V0EQ/ref=sr_1_3?s=computers&ie=UTF8&qid=1436797043&sr=1-3&keywords=850w+power+supply

Yes, go with that one. The EVGA B2 is a very solid unit for the money.

 

 

This is better.

 

http://www.amazon.co.uk/EVGA-SuperNOVA-750W-Power-Supply/dp/B00J01K3E8/ref=sr_1_1?s=computers&ie=UTF8&qid=1436797683&sr=1-1&keywords=750w+Psu+evga

The 850B2 is a better choice then the 750G2 in this case. With the G2 all you gain is more efficiency, full modularity, and hybrid fan mode. 290s do use a lot of power so it's worth giving those up for the extra power handling, not to mention that the B2 is cheaper if those features aren't a necessity. The B2 is still a very solid Super Flower made unit.

[SkywardKkalox]

Yes, go with that one. The EVGA B2 is a very solid unit for the money.

 

 

The 850B2 is a better choice then the 750G2 in this case. With the G2 all you gain is more efficiency, full modularity, and hybrid fan mode. 290s do use a lot of power so it's worth giving those up for the extra power handling, not to mention that the B2 is cheaper if those features aren't a necessity. The B2 is still a very solid Super Flower made unit.

If I remember what you said at strm's PSU thread, you were against the B2.

[Aniallation]

If I remember what you said at strm's PSU thread, you were against the B2.

When was I against the B2?

 

I was against the B1, which were either rippletastic HEC units (500/600) or poorly regulated FSP units (650/750).

[SkywardKkalox]

When was I against the B2?

 

I was against the B1, which were either rippletastic HEC units (500/600) or poorly regulated FSP units (650/750).

Oh! Excuse me then, missread.