Originally Posted by Original Sin
Originally Posted by Belial
Well with a decent board, like the UD5H, this shouldn't be an issue, no? If you could explain more about this, that would be appreciated. I just don't want a PSU to be a problem. Right now it's being a problem.
Indeed, the UD5H is a solid board, but you have to keep in mind the VGA's VRM as well.
Simply put, your PSU delivers 12V current to both the CPU's VRM and the VGA's VRM, which then convert this to 1.xV (depends on the board/card, your settings, etc), as load varies so does the current drawn by the two chips (CPU and GPU), and in turn the voltage varies with it (inversely), in turn that puts additional stress on the VRMs, which need to deliver very very stable voltages to the chips, from an unstable 12V source (the PSU).. when the VRMs fail to do that, because they're poor, or because the settings are poor, or because the PSU is poor (or something else altogether affects the regulation, like adapters, poor connectors, deformed pins, etc), you encounter behavior such as the one you described.
Hence the accent on quality as opposed to output, when recommending/buying a PSU.
And are you saying the CX series is not a good quality psu? As in, it's like the many no-name, terrible psus? I'm a bit confused.
Like I understand VRMs pretty well, on motherboards and GPUs. What you say, I understand. But even for motherboards and GPUs, you just want a VRM that:
- can supply enough power, ie amperage on the mosfets
- can handle high temps (higher quality), stays cool (more phases, higher quality), has a high max temp (ie doesnt whine at 90*C or blow out at 120)
- delivers clean, stable power (the less clean/stable, generally, you will have to use higher voltage to make up for it), and can do this at higher temps/loads.
Like the Extreme4. Relatively, it's got a terrible VRM. But for most overclocks, it won't be limiting and won't be noticeably worse than a ud3h except for the most extreme air overclocks, and you can usually fix this with a fan on them. Whereas, say, the G41, literally, it has coil whine around 90*C (which you hit around email@example.com on that board), will be suffering long term damage around those temps, requires more voltage than you would on a decent motherboard, and the lower quality is immediately handicapping and apparent.
I'd say the Extreme4 is a terrible board, relatively, but absolutely, it still gets the job done, it's still a 'good board' in the sense you can push a high overclock on it just fine and you can generally overclock as far on it as you can on a Ud3H for a high end air overclock. not a great example because the extreme4 actually does limit your overclock on ambient but you can put a fan on it and that should help...
So is the CX500 so bad that it's noticeably worse, or is it just relatively worse?
And really, I don't see what you say is a better PSU to buy. When the CX500 is $24, what better PSU is $25? What better PSU is under $50?
Got a PM to share my CX experience from the OP. Not bashing Corsair, I actually think it's a great company.
Had a CX600 to power 2nd sig rig (SB) with a 580GTX.
Benchmarks ran fine. Gaming maxed out was a different story.
MP3, The Run, New Vegas, BL2, MW3, BF2 would all crash to the desktop after around 15-20 min with 'Driver stopped responding and recovered' crap. Did a fresh windows install with different drivers, same thing. If I lower AA, it takes 30-40 min for the crashes to happen.
Thought it was the 580, put it in my 1st sig rig (not easy/simple removing AMD drivers and reinstalling Nvidia drivers, kept getting BSOD until I did a fresh windows install) and it was fine after hours on the same games.
Switched the CX with the GS600, plugged in the 580 and bam, no crashes after 2 hours of MP3 maxed out.
Tested every other game and not a single crash.
EDIT: The CX600 is now powering my sister's rig (2400SB, H67, 6670HD) with no issues at all @ 720p maxed out.
Edited by eXXon - Today at 12:58 am
wow, rep'd. Thanks a lot. I was literally just about to reinstall windows, I was downloading it before I figured out this swap psu fixed it lol. Nvidia driver crashing, i mean i never wouldve figured that's the sign of a psu failing. So is that the sign of a lemon PSU, or a PSU that can't handle the voltage load changes?