Need a new PSU - which to choose?

[kriswoj]

I have ordered a HD 7950 graphics card but don't currently have a PSU that can power it.

I've done a search around and have drawn up a shortlist of what I gather are reputable brands that fall around my desired budget, although cheaper if possible and still good enough would be great.

The PSU will need to power:
Athlon xII 640 + mobo - hopefully changing this to an i5 + mobo next year.
About 3 sata hdd
1x optical drive
1x wifi card
hd 7950 card.
3 case fans
up to 4 ddr3 ram sticks

I want the capability to power another graphics card, so I can do that if I want.

PSU calculators put the recommended rating with the 2 GPUs as 512W, so figure a 550W or 600W PSU should be ok then.

So which of these fits the bill - I am in the UK:

OCZ Technology ZS Series 550W 80+ Bronze Power Supply
Corsair 600W Builder Series CX Series CX 80+ Bronze ATX Power Supply
Silverstone SST-ST60F-ES Strider Essential 600W Power Supply
Rasurbo 21250079 550W Modular Power Supply
Thermaltake TR2 Series TR-600P 600W V2.3 & EPS 12V 2.91 80 PLUS BRONZE Certified PSU
XFX Pro Series Core Edition P1-550S-UKB9 550W Power Supply

They are all in the £45-£55 range.
The Silverstone has 4 PCIe power adapters, the rest have 2, so from that regard it seems to be a good one to choose. But then I'm sure if I get another 7950, I could just use 4pin - pcie adapters to run the 2nd card?

Anyway, recommendations or comments wanted.

Thanks.

 

[djangoringo]

XFX Pro Series Core Edition 550W, best psu of that list, it's better than the silverstone, has more amps and it's a bronze plus certificate vs only plus of silverstone.
You can run well with that psu, for crossfire i'd recommend a 650w-750w psu.

 

[kriswoj]

So maybe I should just go for a 750W one now to keep my options open...

Had looked at:
Fractal Design Integra R2 750w 80 Plus Efficiency.. | Ebuyer.com
OCZ ZS Series 750W 80 Plus Bronze Power Supply (PSU) - OCZ-ZS750W-UK - Scan.co.uk

Those are about £65 ish, so only about £15 more. Maybe worth spending that now, rather than changing in the future...

Although it is more expense now.
Maybe I'm being too presumptious that I'll even want to crossfire a 7950...

 

[toyftw]

So maybe I should just go for a 750W one now to keep my options open...

Had looked at:
Fractal Design Integra R2 750w 80 Plus Efficiency.. | Ebuyer.com
OCZ ZS Series 750W 80 Plus Bronze Power Supply (PSU) - OCZ-ZS750W-UK - Scan.co.uk

Those are about £65 ish, so only about £15 more. Maybe worth spending that now, rather than changing in the future...

Although it is more expense now.
Maybe I'm being too presumptious that I'll even want to crossfire a 7950...

Hi - you really sorta have to know if you're going to CF 7970's, but personally
if I had the funds I'd spens the xtra now & not have to worry about it
one way or another.

Tom

 

[skele]

I have ordered a HD 7950 graphics card but don't currently have a PSU that can power it.

I've done a search around and have drawn up a shortlist of what I gather are reputable brands that fall around my desired budget, although cheaper if possible and still good enough would be great.

The PSU will need to power:
Athlon xII 640 + mobo - hopefully changing this to an i5 + mobo next year.
About 3 sata hdd
1x optical drive
1x wifi card
hd 7950 card.
3 case fans
up to 4 ddr3 ram sticks

I want the capability to power another graphics card, so I can do that if I want.

PSU calculators put the recommended rating with the 2 GPUs as 512W, so figure a 550W or 600W PSU should be ok then.

So which of these fits the bill - I am in the UK:

OCZ Technology ZS Series 550W 80+ Bronze Power Supply
Corsair 600W Builder Series CX Series CX 80+ Bronze ATX Power Supply
Silverstone SST-ST60F-ES Strider Essential 600W Power Supply
Rasurbo 21250079 550W Modular Power Supply
Thermaltake TR2 Series TR-600P 600W V2.3 & EPS 12V 2.91 80 PLUS BRONZE Certified PSU
XFX Pro Series Core Edition P1-550S-UKB9 550W Power Supply

They are all in the £45-£55 range.
The Silverstone has 4 PCIe power adapters, the rest have 2, so from that regard it seems to be a good one to choose. But then I'm sure if I get another 7950, I could just use 4pin - pcie adapters to run the 2nd card?

Anyway, recommendations or comments wanted.

Thanks.

I would look into this

http://www.eggxpert.com/forums/thread/323050.aspx