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Radeon hd 7950 runs at 850mhz not 950mhz

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December 16, 2012 6:47:07 PM

Helllo guys,

My new Radeon hd 7950 vapor-x got a issue.

When i play skyrim and open MSI afterburner it shows that it's running on 850mhz and sometimes 501mhz when it's factory overlcoked to 950mhz when i open amd vision control center it shows under graphical overdrive 950mhz but on skyrim or any other game it never reach it.

Anyone can help me out with this?

-redbadboy
a b U Graphics card
December 16, 2012 6:56:17 PM

Get the GPU-Z and check.......
December 16, 2012 7:00:27 PM

When i'm going to GPU-z it say's on the first page 950mhz. But when i'm going too sensors in gpu-z it says max is 850mhz.
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a b U Graphics card
December 16, 2012 7:04:05 PM

Is it running at its proper voltage, maybe you've accidentally changed the core voltage or something ?
December 16, 2012 7:06:27 PM

merandos said:
Is it running at its proper voltage, maybe you've accidentally changed the core voltage or something ?


nope i didn't.. ;(
a b U Graphics card
December 16, 2012 7:07:55 PM

Then make sure you bought the OC'ed version, and take back the chip to where you bought it from if possible....
December 16, 2012 7:08:30 PM

Also pretty weird that i get 501mhz and than 850mhz shoudn't it just always be on 850mhz when playing a game like skyrim?
December 16, 2012 7:09:24 PM

merandos said:
Then make sure you bought the OC'ed version, and take back the chip to where you bought it from if possible....


I deffinatly bought the OC version ;-) and in amd vision it also is on 950mhz but it just don't take it when playing a game..
a b U Graphics card
December 16, 2012 7:14:46 PM

I've checked the vapor x version from sapphire and it says that it is not oced to 950 it is just a boost clock, if it is overclocked to 950 Mhz then the boost clock would be even higher, like 980 Mhz ~ boost 1033 Mhz gtx 660 reference card, and the gigabyte one is oced to 1033 Mhz ~ boost clock is 1098 Mhz

So is that boost clock feature maybe set to off or something ? haven't tried sapphire before actually, maybe it is something that you turn on or off, or the card doesn't use it until there is heavier load...

So here is what to do, Skyrim won't push it for its boost clock, run 3dmark 11 and set the sensors in GPU-Z to maximum, after the benchmark test, see what is the highest Mhz is recorded on the GPU-Z......
December 16, 2012 7:20:53 PM

merandos said:
I've checked the vapor x version from sapphire and it says that it is not oced to 950 it is just a boost clock, if it is overclocked to 950 Mhz then the boost clock would be even higher, like 980 Mhz ~ boost 1033 Mhz gtx 660 reference card, and the gigabyte one is oced to 1033 Mhz ~ boost clock is 1098 Mhz

So is that boost clock feature maybe set to off or something ? haven't tried sapphire before actually, maybe it is something that you turn on or off, or the card doesn't use it until there is heavier load...

So here is what to do, Skyrim won't push it for its boost clock, run 3dmark 11 and set the sensors in GPU-Z to maximum, after the benchmark test, see what is the highest Mhz is recorded on the GPU-Z......


The vapor-x edition have a turn on and off, i got it turned on and than it takes 950mhz but i just doesn't reach that high in skyrim only 850 like i said ;(. But im going to try 3d mark 11 i'll let u know.
a b U Graphics card
December 16, 2012 7:24:38 PM

redbadboy said:
The vapor-x edition have a turn on and off, i got it turned on and than it takes 950mhz but i just doesn't reach that high in skyrim only 850 like i said ;(. But im going to try 3d mark 11 i'll let u know.

As long as it is a boost feature, then you will have to push the card to its limits in order to get the boost, OC feature gives you a higher standard clock even if you are not pushing the card to its limits, that's probably why you are not seeing 950Mhz on Skyrim, as i told you Skyrim won't let the card use the boost as i believe, 3dMark 11 will surely do and am pretty sure it will record a 950Mhz on the GPU-Z.......
December 16, 2012 7:37:11 PM

By the way when i play hitman absolution i also dont get past the 850mhz.. and i nearly have 3d mark installed ;-)
December 16, 2012 8:59:00 PM

Afther running 3d mark, it still isn't passing 850mhz..
December 16, 2012 9:14:11 PM

Increase the power limits in overdrive or catalyst (can't remember) to 115%.
You might be hitting TDP constraints.
Check your temps too, just in case it is throttling.
December 16, 2012 9:20:42 PM

ilikemacandpc said:
Increase the power limits in overdrive or catalyst (can't remember) to 115%.
You might be hitting TDP constraints.
Check your temps too, just in case it is throttling.


Now i'm getting 950mhz ;-). Only it's pretty weird that i have to adjust it manually because it's a factory overclocked GPU so shoudn't it automaticly gets 950mhz ?
December 16, 2012 9:23:08 PM

yeah. That is weird. It works now; that's what matters.
a b U Graphics card
December 16, 2012 10:30:10 PM

redbadboy said:
Now i'm getting 950mhz ;-). Only it's pretty weird that i have to adjust it manually because it's a factory overclocked GPU so shoudn't it automaticly gets 950mhz ?


Still don't believe that there is a difference between OC'ed and boost feature ? :)  that's why it doesn't hit 950Mhz automatically, it should have hit 950Mhz underload automatically since the boost feature is on though,,,,anyway as ilik said what matters now that it is working....
December 17, 2012 11:15:48 AM

merandos said:
Still don't believe that there is a difference between OC'ed and boost feature ? :)  that's why it doesn't hit 950Mhz automatically, it should have hit 950Mhz underload automatically since the boost feature is on though,,,,anyway as ilik said what matters now that it is working....


My last questions is.... when i put my power limits to 115% isn't that bad for my GPU? or doens't it matther.. thanks for the answer ;-)
a b U Graphics card
December 17, 2012 12:59:23 PM

redbadboy said:
My last questions is.... when i put my power limits to 115% isn't that bad for my GPU? or doens't it matther.. thanks for the answer ;-)

Not it is okay, it will just raise the power target alil bit, so you can achieve the 950Mhz at whatever load, just monitor your temps under load....
!