290 Tri-fire PSU help

[SS-89]

Hi guys,

I purchased 3 290's yesterday for tri-fire and now need to confirm what I suspected that my 2 week old 1000W EVGA p2 platinum hasn't got enough juice to feed them?

If so I guess I'll have to take the hit (wish I'd ordered from Ocuk but they didn't have stock as I would be able to exchange within 14 days) and order a 1200W+ to replace it.

 

[whyscotty]

The Evga 1300 should stand you in good stead
YOUR BASKET
1 x EVGA SuperNova G2 1300W '80 Plus Gold' Modular Power Supply (120-G2-1300-XR) £149.99
Total : £160.79 (includes shipping : £9.00).




I have the same psu running 3930k and Titan Trisli

 

[BubbySoup]

Guru 3D has a single one @ 254 watts and 2 @ 493 watts measured from the wall - that's just the GPU's not total system, so a little less than double a single. That would mean 3 of them suck around 750 watts from the wall - that's at stock.

Adding in the rest of your system, especially if you have an overclocked CPU and you are getting close to 1000w. O/C'ing the GPU's as well and whilst I think the EVGA could cope, it would be running close to maximum all the time.

 

[SS-89]

The Evga 1300 should stand you in good stead
YOUR BASKET
1 x EVGA SuperNova G2 1300W '80 Plus Gold' Modular Power Supply (120-G2-1300-XR) £149.99
Total : £160.79 (includes shipping : £9.00).




I have the same psu running 3930k and Titan Trisli

That's exactly what I was looking at to replace it, wish I wasn't so impulsive with purchases as a little forward planning would have saved me some money!

Guru 3D has a single one @ 254 watts and 2 @ 493 watts measured from the wall - that's just the GPU's not total system, so a little less than double a single. That would mean 3 of them suck around 750 watts from the wall - that's at stock.

Adding in the rest of your system, especially if you have an overclocked CPU and you are getting close to 1000w. O/C'ing the GPU's as well and whilst I think the EVGA could cope, it would be running close to maximum all the time.

Yep that's what I thought, It's a high quality PSU but running a PSU at near full tilt for long (especially as I'll be mining) will likely see it go pop.

 

[Drangueos]

I'm not sure but I think you can run the cards if you don't overclock them on a 1000W psu...

You could get a power meter for £10.00 and check, before that if you want to run the cards just don't overclock them and check your power draw but remember the read from the meter will be higher than the actual power draw from the psu, that is why you have that efficiency %.

 

[Kaapstad]

My 1200 watt Corsair PSU was not up to the job when I tried three 290Xs and a 3970X CPU all overclocked.

 

[Puppetmaster]

A bit offtopic, but what speeds do you get mining with one card?