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Sapphire HD 7970 6gb voltage way too low??

Last response: in Graphics & Displays
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December 20, 2012 11:36:44 PM

Hello,

I recently got a sapphire hd7970 6gb vapor x and wasn't impressed by its performance so I looked into overclocking it and eventually ran into the GPU Z utility to monitor it's statistics, and I realized that it's apparently only drawing .875 vddc ??? I'm pretty sure its supposed to be anywhere from 1.1 to 1.25, so is there something seriously wrong? Is it fixable? I have a very nice system with a 1500 watt psu, i7 3930k, asus x79 mboard. Please help, I've been trying to figure this out for a while
a b U Graphics card
December 20, 2012 11:51:03 PM

try running some games see if the voltage goes up? it could be the card running in idle mode (power saving)
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December 20, 2012 11:52:47 PM

Oh trust me I have, I've ran it in skyrim ultra detail, and tried the furmark benchmark and it stays the same, even reads that its only drawing .875 in the benchmark. it doesn't go up or down.
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December 21, 2012 1:06:30 AM

Try using Afterburner to monitor the voltages, I find it much more accurate than GPU-Z. GPU-Z never reads the voltages correctly on my Lightnings.

You're probably fine... just use Afterburner (and if you're overclocking, you should be doing all your OC'ing in Afterburner anyways btw...).
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December 21, 2012 12:59:40 PM

BigMack70 said:
Try using Afterburner to monitor the voltages, I find it much more accurate than GPU-Z. GPU-Z never reads the voltages correctly on my Lightnings.

You're probably fine... just use Afterburner (and if you're overclocking, you should be doing all your OC'ing in Afterburner anyways btw...).


msi is actually the first program i tried for real overclocking, but the voltage option for my 7970 is locked. I tried using trixx because the voltage option isnt locked for me on that, but i also think that the voltage adjustments do not work, so i guess I can only overclock my card as much as the stock voltage will let me, which isnt very high. I thought the whole point of the vapor x series was to allow more stable overclocks? I ran the msi kombuster benchmark and it gave me the right voltage reading of 1.25 vddc, but i also only got 6fps on the test, i thought the 7970 was supposed to be a great card? apparently not. $600 down the drain.
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December 21, 2012 1:12:18 PM

Did you alter the Afterburner config file to allow "unofficial" overclocking and voltage control?

I don't use Kombuster... it's sometimes glitchy and some driver revisions haven't liked it for me, and it's not helpful to test a stable overclock anyways.
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December 21, 2012 1:35:46 PM

BigMack70 said:
Did you alter the Afterburner config file to allow "unofficial" overclocking and voltage control?

I don't use Kombuster... it's sometimes glitchy and some driver revisions haven't liked it for me, and it's not helpful to test a stable overclock anyways.


I just ran it to see if it would give me a voltage reading, and I've both went under settings to unlock voltage control, and i edited the config file, doesn't do a damn thing. It might not help that it's saying my card is an msi 7970 lightning instead of the correct radeon 7970. I'm getting sick of this lol
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