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Need help with power supply

T

TheCommander

2[H]4U
Joined
Apr 2, 2003
Messages
2,999
My current system is:

Phenom 2 945 @3.1ghz
4gigs DDR3
2 optical drives
2 hard drives
1 SSD
ATI 4850

It's been running fine on my 450 Watt Corsair power supply. I just bought a ATI 5870 and was wondering if a new power supply is needed. Thing is the 5870 is one of the overclocked versions which makes me wonder how much more power I need. Would my current power supply be able to handle all of this or do I need a 550 or 650 Watt?
 
Do you have the 125W or 95W version of the Phenom II 945?
 
Danny Bui said:
Do you have the 125W or 95W version of the Phenom II 945?
Click to expand...

95 Watt version and it's slightly overclocked to 3.1 ghz.

Here is the card I just bought:
http://www.newegg.com/Product/Product.aspx?Item=N82E16814102872

and here is the power supply I currently have which is about 2 years old:
http://www.newegg.com/Product/Product.aspx?Item=N82E16817139003&cm_re=corsair-_-17-139-003-_-Product

It says a 500Watt or greater power supply is required on the spec sheet for that video card but I'm wondering how true that is.
 
Hmmm:
95W - Phenom II 945
235W - HD 5870
--
330W for just the CPU and GPU alone.

The Corsair 450VX only has 396W on the +12V rail which means that it leaves you with only 66W for the 2 hard drives, motherboard, and 2 optical drives. So yeah, I recommend a larger PSU. Something like this should be just fine:
$100 - Corsair 650TX 650W PSU
$100 - XFX P1-650X-CAG9 650W Modular PSU
 
I ended up getting the 650 Watt Corsair. If I decided to use an SLI setup in the future, would that power supply be able to handle it?
 
TheCommander said:
I ended up getting the 650 Watt Corsair. If I decided to use an SLI setup in the future, would that power supply be able to handle it?
Click to expand...

HD 5870 Crossfire? Not a good idea with the 650TX. I would go with the Corsair 850TX for HD 5870 Crossfire for a little leeway.
 
It is do-able but you are really pushing the TX650. As long as you don't run too much other stuff you should be able to scrape by.
 
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