PSU recommendation

[si_mats]

After upgrading from a 7950 boost to a r9 290 I've been having lots of problems with freezes and lock-ups. Suspected it was something to do with the PSU (OCZ ZS 750W, bought for cheap at PC World) so swapped it out for an old Corsair TX650 (v1) and the problems have decreased dramatically. However, they haven't gone away completely, which makes me inclined to invest a a new PSU. Can someone please recommend a PSU for the following system?

[email protected]
R9 290
Maximus V Gene
8GB Samsung Green
Samsung 830
3 TB HDD
6*120mm fans

Btw, the 290 is cooled with a Prolimatech Mk26 and two Apache 120mm fans. Load temps ~70C, although VRM1 reaches ~100C.

Many thanks.

 

[dt97583]

One of these:

YOUR BASKET
1 x Seasonic G series 650w '80 Plus Gold' Modular Power Supply £99.95
1 x Corsair RM Series RM 650 '80+ Gold' 650W Power Supply (CP-9020054-UK) £99.95
1 x Be Quiet Power Zone 750W '80 Plus Bronze' Fully Modular Power Supply £89.99
1 x Antec High Current Gamer M 620W "80+ Bronze" Modular Power Supply £89.99
1 x Antec High Current Gamer 620W '80 Plus Bronze' Power Supply £79.99
1 x SuperFlower Golden Green HX 650W "80 Plus Gold" Power Supply - Black £73.99
Total : £533.86 (includes shipping : FREE).

 

[Lemin]

YOUR BASKET
1 x Corsair RM Series RM 750 '80+ Gold' 750W Power Supply (CP-9020055-UK) £109.99
Total : £119.59 (includes shipping : £8.00).

 

[spixelspixel]

Doesn't sound like the psu from what you've described. If one of the psu's had issues then maybe, but both?

 

[Defconluke]

Is the card overclocked?
Have you tried dropping the clocks a little bit (20mhz maybe)?
Did the problems persist if you dropped the clocks?

 

[si_mats]

Many thanks for the replies. I've tried just about everything, tbh - underclocking, voltage increase/decrease, power limits, reseating the card, trying different power leads, trying different driver versions, setting custom fan profiles... It seems I've had breakthrough though - after updating the MB BIOS I changed the legacy setting to enabled and haven't had a problem for the last few hours! After a little research I discovered the Club3D forums have a rep. stating "We know that there has been some issues with motherboards using the UEFI boot mode with these cards. Please make sure that you can request a new BIOS update on the motherboard to support this graphic card. Normally booting on Legacy mode will not have issues like you describe."

... and so far he's correct! Hope this helps some of the other guys out there having similar problems with the 290 series.