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Windows 7: Will my PSU be ok for this graphics card??

13 Feb 2010   #11
pparks1

Windows 7 Ultimate x64
 
 

I run a Corsair HX620 in my box and I have been very impressed and satisfied with this power supply. I don't think after using a modular power supply that I would ever go back to a non-modular power supply for my home machine. Keeping the wiring neat and tidy is a key element to a nice computer for me.


My System SpecsSystem Spec
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13 Feb 2010   #12
bobkn

Windows 7 Pro X64 SP1
 
 

Quote   Quote: Originally Posted by Fumz View Post
Don't be deceived by PSU's that claim to have dual, triple and quad +12 volt rails; they're not. Yes, true dual rail PSU's exist, but they're rare, hard to find and a bit pricey. What you'll most often find is that the manufacturer has simply "split" the +12 volt rail. This isn't optimal because once slit, power cannot move back and force between rails if the system needs it... your conclusions were correct.
I'm not sure that I buy that. People used to have trouble with the way some multi-rail PSUs were wired, when trying to use a pair of high-power graphics cards in SLI.

SLI and CrossFire Push Power Supplies to the Limit - CPUs, Boards & Components by ExtremeTech

I think that multiple small voltage regulators may be cheaper than one high-capacity one.

A 9400GT needs no external power, and consumes less than 40W max, so I'm pretty sure that it would operate in grx's system.

I have no idea whether a game like GRID would run tolerably at any settings on grx's system, with the upgraded GPU. Adding a $100+ PSU to permit adding a $40 graphics card sounds like a poor bargain.
My System SpecsSystem Spec
13 Feb 2010   #13
Fumz

7 Ultimate x64
 
 

Quote   Quote: Originally Posted by bobkn View Post
Quote   Quote: Originally Posted by Fumz View Post
Don't be deceived by PSU's that claim to have dual, triple and quad +12 volt rails; they're not. Yes, true dual rail PSU's exist, but they're rare, hard to find and a bit pricey. What you'll most often find is that the manufacturer has simply "split" the +12 volt rail. This isn't optimal because once slit, power cannot move back and force between rails if the system needs it... your conclusions were correct.
I'm not sure that I buy that. People used to have trouble with the way some multi-rail PSUs were wired, when trying to use a pair of high-power graphics cards in SLI.
So what's all this rubbish about multiple 12 volt rails?
My System SpecsSystem Spec
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 Will my PSU be ok for this graphics card??




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