r9 290 crossfire- what psu?

[Sacrifice]

How many watts would you say would be needed? There seems to be little on the market between 850W and 1000W. Thanks

 

[thewanted]

How many watts would you say would be needed? There seems to be little on the market between 850W and 1000W. Thanks

I run the following just fine with a Corsair AX860:

4770k @ 4.4GHz
2 x Sapphire R9 290
1 x SSD
2 x HDD
Corsair H100i

I haven't overclocked the graphics cards, but then there's very little need to do so.

 

[Sacrifice]

True, thanks, probs go for the rm850 that is on offer then

 

[thewanted]

True, thanks, probs go for the rm850 that is on offer then

The Corsair RM series got a very poor review at hardocp.com recently. If I were you, I'd read that review first.

I'm not sure how much the RM850 is, but you may want to look at a Seasonic unit instead.

 

[Kaapstad]

Compared to the other components in your system PSUs are one of the cheaper parts.

If you are in the position of having to buy a PSU I think it is better to spend a bit extra and get one that is bigger than you need at the moment. This could save you money further down the road when you start thinking about upgrading or overclocking.

 

[ShivP]

Here's a few 800-1000W suggestions, I'd go with more as Kaapstad said to give you some headroom and "future proofness"

YOUR BASKET
1 x Seasonic 860w '80 Plus Platinum' Modular Power Supply £199.99
1 x Corsair Professional Series AX 860W '80 Plus Platinum' Modular Power Supply (CP-9020044-UK) £169.99
1 x Be Quiet PowerZone 1000W '80 Plus Bronze' Fully Modular Power Supply £169.99
1 x SuperFlower Leadex GOLD 1000W Fully Modular "80 Plus Gold" Power Supply - Black £155.99
Total : £705.56 (includes shipping : £8.00).




That's just some suggestions, there's tonnes on the website, Superflower is supposed to be a very good up and coming manufacturer

 

[Confused Stu]

Compared to the other components in your system PSUs are one of the cheaper parts.

If you are in the position of having to buy a PSU I think it is better to spend a bit extra and get one that is bigger than you need at the moment. This could save you money further down the road when you start thinking about upgrading or overclocking.

Amen to that.

I was running my 2600K at 4.6 and 2 stock 290's on an XFX 750W PSU. It worked fine but I was pulling 600-750W from the wall during heavy gaming, which I was uncomfortable doing for long periods. I know isn't running the PSU flat out (it's rated as 750W into the PC, not 750W from the wall) but the air coming out of the PSU was pretty warm and I don't want the one component that can take out all the others if it goes wrong being stressed. I also realised that if I wanted to overclock or adjust the voltage on my 290's, I was going to run out of power very quickly, so I bought myself a Silverstone 1200W PSU for Christmas (OcUK had one reduced in their stock clearance to £120 - thanks!).

Short version, at stock settings you can run your rig with a good quality 750W, but if you want to overclock or have any kind of headroom, you're definitely looking at an 850W at minimum.

 

[LtMatt]

Agree with the above. 850W minimum ideally. That said im running a 2700k at 4.8ghz and 2x290's at stock and having no problems on a 750W psu. Pull around 500-700W from the wall depending on the game/benchmark.

 

[whyscotty]

I haven't overclocked the graphics cards, but then there's very little need to do so.

Your on the wrong forum

Compared to the other components in your system PSUs are one of the cheaper parts.

If you are in the position of having to buy a PSU I think it is better to spend a bit extra and get one that is bigger than you need at the moment. This could save you money further down the road when you start thinking about upgrading or overclocking.

Sound advice

Short version, at stock settings you can run your rig with a good quality 750W, but if you want to overclock or have any kind of headroom, you're definitely looking at an 850W at minimum.

^^^
This

 

[thewanted]

Your on the wrong forum

I realise it's a tongue in cheek comment, but whether I get 100FPS in BF4 or 120FPS on my 60Hz monitor, it makes very little difference to the experience but negatively impacts my electricity bill.

 

[Nightglow]

Already have a collection of BeQuiet psu's, including a Dark Power Pro 850W, but I have Be Quiet Power Zone 1000W on my list for the next upgrade in the New Year.

Always found them to be superb psu's, 850w should be ample, but it's nice to have a bit of extra headroom with a psu.

 

[DrBombcrater]

How many watts would you say would be needed? There seems to be little on the market between 850W and 1000W. Thanks

I run a pair of 290s from an 850W Seasonic M12II and it copes fine, barely even gets warm.

 

[Sacrifice]

I run a pair of 290s from an 850W Seasonic M12II and it copes fine, barely even gets warm.

What mobo/how much space between the cards?