PSU for Crossfire 280X

[Jony27]

Hi all, just about to confirm the replacement cards for my 7950s which took longer than 28days to RMA.
As above, OCUK have politely offered me 2x PowerColour 280x TurboDuo as replacements for my 2x HIS ICEQ HD7950 BOOST.

I used my current PSU with the previous cards with no problem, but after reading some reviews, Im a little worried that my Corsair HX750W might be pushed to its limits with the new cards.

I have an overclocked i7 2600k @ 4.5Ghz and plan to overclock both cards.

So really, Im just looking for confirmation from people wo've had experience with the above configuration.

Another option would be to sell on the cards and get a 780/780Ti as I've always wanted to try nVidia

I game at 1440p if that helps.

Thanks.

 

[Minstadave]

Corsair will be fine, I had no problems with crossfire 280x on my 700W Coolermaster PSU.

 

[Jony27]

What were the rest of your specs?
And any overclock?

 

[jimhaumman]

BeQuite! Dark Pro 750W,cpu 4.6 ghz,gpu 1175mhz,1650mhz (1,2mv;1,256mv) no problems so far

 

[Jony27]

Thats reassuring!
Hopefully receive the new cards by Tuesday

 

[Minstadave]

What were the rest of your specs?
And any overclock?

4.8ghz 2700k
16GB RAM
2xSSD 1xHDD
Watercooling loop

Both cards at 1.1GHZ/1.6GHZ

 

[Jony27]

Nice.
Thanks!

 

[Jony27]

Hi all, just wanted to give an update.
I'm now going to be watercooling my rig with both gpus and Cpu.

I will be going for max overclock on the CPU(i7 3770k) and gpu, looking to get at least 1100/1500.

Have also replaced the psu from a hx750w to a ax750.... I know

So, general consensus is still 750w is enough?

Or should I just try and get a superflower 1k watt from the mm?

 

[jimhaumman]

Get the gpus first and see how far you can push them and what voltage is require to achive stable OC,then think about psu.

 

[Jony27]

What voltage are you using for your overclock?