[born2bwild]

Well, I have to get a new PSU since my 750W can barely handle my setup - I actually had to return everything to stock to be safe.

What are your thoughts on the "OCZ ZX Series 1250W"? Do you know of other great deals for other 1000+W PSUs going on in other Canadian retailers?

 

[Phaedrus2129]

You shouldn't be having power issues. What were the symptoms?

 

[Cyclonicks]

I never thought you'd be a member here lol

another corsair is out of the question?

 

[born2bwild]

Quote:

Originally Posted by Phaedrus2129 You shouldn't be having power issues. What were the symptoms?

Games or GPU tests freeze, there is absolutely no way to unfreeze the PC, and no BSODs come.

When I visit the Event Viewer after a cold shutdown, it says Event ID 41, source: Kernel-Power, task category 63, which is apparently due to a PSU issue.

And these are the trials I did; the CPU/GPU overclock combination froze the system quickly. When I lowered my CPU overclock and returned my GPUs to stock, it worked. When I tried overclocking the GPUs with my lowered CPU overclock it didn't. When I returned my CPU to stock, and overclock my GPUs to the previous overclocks, the system did not freeze. So I came up with the conclusion that wattage is my limitation.

Also, I only had this PSU for 5 months, and I took care of it well using it only to power a 6870 crossfire system. So I can't understand why it wouldn't work. I mean the TX750 supposedly can safely give 900W and my system with everything at 100% load should not go over ~800W.

Quote:

Originally Posted by Cyclonicks I never thought you'd be a member here lol another corsair is out of the question?

No, but there are currently no good deals on Corsair atm.
Also, do I know you?

 

[Phaedrus2129]

The system has no idea what the PSU is doing, except through motherboard voltage sensors, which are usually inaccurate, and Windows does not utilize those. "Kernel-Power" being attributed to the PSU is a guess at best, by a programmer who wrote the code years ago and has never seen your PC or its specs.

I bet you your CPU overclock was just unstable and you need more Vcore.

 

[born2bwild]

Quote:

Originally Posted by Phaedrus2129 The system has no idea what the PSU is doing, except through motherboard voltage sensors, which are usually inaccurate, and Windows does not utilize those. "Kernel-Power" being attributed to the PSU is a guess at best, by a programmer who wrote the code years ago and has never seen your PC or its specs. I bet you your CPU overclock was just unstable and you need more Vcore.

I had my CPU overclocked for nearly 5 months, with absolutely no issue... And keep in mind, I also do a lot of video encoding in addition to gaming and when I first overclocked my CPU, I ran prime95 for a good 20 hours to check.

It might be my GPU, but then again, why does my system experience no issues when the GPU is overclocked but the CPU is not?

 

[Phaedrus2129]

CPUs can degrade a bit, especially when overclocked as high as yours is. After months of running at a given voltage they may become unstable until given more. I've experienced this with both my E2200 and Q9550. It could also be attributed to motherboard degradation.

Power supplies generally do not degrade in a matter of months, especially well-built ones like your TX750 is (though there are certainly better options it's still a quality piece of kit). And if you didn't have any issues back then why would you assume your PSU is the culprit now, rather than something else?

 

[Cyclonicks]

Quote:

Originally Posted by born2bwild No, but there are currently no good deals on Corsair atm. Also, do I know you?

I may have jumped to conclusions about your identity based on your location and username.. sorry about that

 

[born2bwild]

Quote:

Originally Posted by Phaedrus2129 CPUs can degrade a bit, especially when overclocked as high as yours is. After months of running at a given voltage they may become unstable until given more. I've experienced this with both my E2200 and Q9550. It could also be attributed to motherboard degradation. Power supplies generally do not degrade in a matter of months, especially well-built ones like your TX750 is (though there are certainly better options it's still a quality piece of kit). And if you didn't have any issues back then why would you assume your PSU is the culprit now, rather than something else?

Well, I will look into my overclocks...
Theoretically, based on your extensive knowledge in the field of PSUs, should I have any problems operation my system with a 880/2200Mhz overclock @1.075V on my GPUs given that every overclock is stable?

 

[Phaedrus2129]

Theoretically no, with a typical heavy gaming or folding load you'd be looking at around 550-600W. Using Furmark+LinX you might run 700W with peaks around 730-750W. Nothing the PSU shouldn't be able to handle, especially considering you probably don't run those two programs constantly.

 

[born2bwild]

Well, I disabled PhysX, and everything seems to be working... so the problem should be that, and I might have to reinstall drivers etc...
Thanks a lot for your help Phaedrus.