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post #11 of 17
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Quote:
Originally Posted by Stillhouse View Post
Try testing your PSU with a multimeter:

http://www.hardwareheaven.com/guides/testingPSU/

Run OCCT while checking load voltages. Do not trust software voltage readings.
Only voltmeter I have is literally one from the '50s, so I don't trust what it says the voltage is but did use it to measure how much voltage drops between idle and PSU testing with OCCT, all were within 0.5v so that is good but I need to know what the actual voltage is, it's reading the 3.3v as 3.75v, 5v as 5.5v, and 12v as 14v, SpeedFan reports 3.3v at 3.33v, 12v as 10.38, and 5v I can't find on the list. I've done many tests on the GPU now and find that it's memory can stay at the stock 1100MHz and be stable, however the shader and core have to be greatly underclocked to pass GPU stress testing in OCCT.
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post #12 of 17
Thread Starter 
Well this may be a problem.

From video card website:
"Minimum System Requirements
450Watt PSU with 12V rating of 24A"

From PSU website:
Max output:
12V1: 18A
12V2: 18A

But I don't know if the video card is running off one or both of the 12V rails, or if it would be possible to let it run on the 12V rails, would that hurt the PSU somehow?
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post #13 of 17
Quote:
Originally Posted by MikelKassner View Post
Well this may be a problem.

From video card website:
"Minimum System Requirements
450Watt PSU with 12V rating of 24A"

From PSU website:
Max output:
12V1: 18A
12V2: 18A

But I don't know if the video card is running off one or both of the 12V rails, or if it would be possible to let it run on the 12V rails, would that hurt the PSU somehow?
Ah, that's what I suspected. Remember how I listed amperage as one of the important details in a PSU? It looks like your PSU can't provide enough current to the card during load.

You need a better PSU.
post #14 of 17
Thread Starter 
Quote:
Originally Posted by EfemaN View Post
Ah, that's what I suspected. Remember how I listed amperage as one of the important details in a PSU? It looks like your PSU can't provide enough current to the card during load.

You need a better PSU.
Yeah, but can I use the two rails together to power the video card?
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post #15 of 17
Quote:
Originally Posted by MikelKassner View Post
Yeah, but can I use the two rails together to power the video card?
Doesn't look like it as your card only has one pci-e power connector correct? So all the power comes from one rail.
    
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post #16 of 17
Thread Starter 
Well seems my GPU is completely fried. Nonstop artifacts all over both monitors, tried cleaning the PCI-E connection, reseating the card, underclocking it as far as it would go, plugging it into the other PCI-E power cord, no luck, now simply watching a video on YouTube or resizing a window crashes the video card driver. Warranty ended not even a month ago and it's done for.
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post #17 of 17
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Quote:
Originally Posted by straha View Post
Doesn't look like it as your card only has one pci-e power connector correct? So all the power comes from one rail.
Correct, but I have an adapter I can use to connect it to two rails, only to find out my PSU uses rail one to power everything on the MB including the CPU, and leaves rail two for everything else, so I can't use both rails for the video card unless I ran a wire from the ATX 24pin to the PCI-E 6pin.
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