Trustdesa :
VincentP :
Trustdesa :
VincentP :
For your build with the GTX 760, you need a good quality 430W power supply or higher.
The Corsair HX650 is excellent.
Because you are not loading it heavily, the Cooler master will be fine for as long as you need it.
I have a Zalman 500W with a higher CPU and MSI GTX 760 (just changed from AMD...better quality and less noises...I should have opted for Nvidia years ago
)
However the PSU isn't working efficiently with my system as it run over 80% capacity...
If you want to play with wattage need to calculate what PSU you need for an optimal use try http://www.coolermaster.outervision.com/
Zalman ZM-500GS is rated at 408W on the combined +12V rails.
Is this the supply you have?
Why do you say it is over 80% capacity?
Hi, yes that is the one I have got
I did a wattage calculation on the website I linked...and read a really interesting article here on Tom's Hardware about power supplies and efficiency, I am not planning to upgrade to a Corsair Builder Series CXM 600W Modular 80 PLUS Bronze Certified as my Zalman really work too hard on demanding games, never had a system crash but it is pretty noisy.
The original poster has a 73W CPU.
I calculate his maximum power draw at 180 + 73 + 40 = 293W
Your CPU may have higher power draw.
Many power supplies that are near silent at low power draw are audible above 50% load.
A good power supply will be stable up to 80% load, but will be noisier when at this load.
I usually want a computer to be near silent when running on the desktop, playing movies, etc. but some noise while playing games is OK.
Chances are that your video card is making more noise than the power supply while playing games anyway.
You are actually looking at buying a lower quality supply than the one you have:
http://www.eggxpert.com/forums/thread/323050.aspx
Zalman ZM is tier 2a, Corsair CX is tier 3.
I wouldn't recommend this as an upgrade.
Lets say you have a 125W CPU and other components are fairly normal.
180 + 125 + 40 = 345W
If you want your computer to be very quiet at the desktop but noisier in games, get a top quality supply at least 430W.
If you want your power supply to be very quiet even when the computer is at full load, you need to look at a supply like the Seasonic X650 or read some good reviews.
There is a table on the linked page of tested power supply noise at different power draw:
http://www.silentpcreview.com/article986-page5.html
Personally, I would compromise on a good 550W power supply like the Seasonic G 550. This is substantially cheaper than the X series and does not have a fan that stops spinning at low load, but it has top quality components and is still gold efficiency rated. If this is a bit expensive, XFX Pro 550 or Antec HCG 620 are pretty good alternatives.
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