yes yes thank you, just tried it and indeed it does, for the hell, put the sliders to the right and....
(12.4)
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7950 lovin and OC's thread
- Thread starter eyetrip
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yes yes thank you, just tried it and indeed it does, for the hell, put the sliders to the right and....
(12.4)
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What should I consider ceiling burn test/benchmark temperatures?
I reached 72 degrees in kombustor and 62 degrees in heaven with 1100mv, 1000ghz core and 1400mhz memory and I stopped. Is that a rationale place to stop or are those temps nothing to worry about and it is ok to push on?
I have an MSI TFiii and I can get 68.7 fps in heaven at 1080p with that setup so I figure my card is working fine but at the same time I get 20-30fps in STALKER Call of Pripyat maxxed at 1080p when a dozen or so reviews say I should get 90-110 fps.
I am also getting vram leaks in oblivion although that may be an oblivion problem. What are the signs that something is not right with your card?
I reached 72 degrees in kombustor and 62 degrees in heaven with 1100mv, 1000ghz core and 1400mhz memory and I stopped. Is that a rationale place to stop or are those temps nothing to worry about and it is ok to push on?
I have an MSI TFiii and I can get 68.7 fps in heaven at 1080p with that setup so I figure my card is working fine but at the same time I get 20-30fps in STALKER Call of Pripyat maxxed at 1080p when a dozen or so reviews say I should get 90-110 fps.
I am also getting vram leaks in oblivion although that may be an oblivion problem. What are the signs that something is not right with your card?
1000ghz
really you can go higher with these cards on temps - but stay under 100degC, set a fan profile and you won't see much higher than 60degC (see my post #2) with ur TF3, fans should be quiet anyway so set your profile to your liking to keep the temps way down and OC more (if you want)
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Read somewhere that AMD recommended 125mV over stock, so in case of 7950 that would be 1.218V.
However, as the 7970 are basically same chips, 125mV on those would be 1.3V.
Personally, for some reason I am not keen on idea of going over 1.225V.
Not necessarily 1.3v for a 7970, there is 4 different stock voltages but the +125mv seems to be the limit for most, so I'm guessing 7950's have different stock voltages aswell.
Also for temps I'd stay below 80 when OC'ing as the chips may be rated to run at 95 degrees max on stock voltages and clocks but for an increase in everything max temp should be lower to sustain life, I generally don't leave mine go over 65 for benching, no need to OC for games!
Just another question - any one know why sometimes I only get one of my 2 cards reporting temps through afterburner / ccc ? Sometimes it shows the second cards temp sometimes it doesn't?
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Make sure the boxes 'unlock voltage monitoring' and all of them are ticked, then you have to disable ULPS.
To do this go to regedit and search for enableulps. When you find it change the 1 to a 0 for both the entries. You may have to do it again so just click find next and change the 1's to 0's. After this you should be able to monitor everything in AB.
To do this go to regedit and search for enableulps. When you find it change the 1 to a 0 for both the entries. You may have to do it again so just click find next and change the 1's to 0's. After this you should be able to monitor everything in AB.
Just another question - any one know why sometimes I only get one of my 2 cards reporting temps through afterburner / ccc ? Sometimes it shows the second cards temp sometimes it doesn't?
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I believe that is AMD's zero core feature kicking in - the 2nd card basically get completely shut down to save power.
Though having zero core/ ultra low power state enabled when OCing in crossfire can give a lot of instability.
I usually disable it, though I just noticed that it is currently enabled. Which will be nice if it was running when I was testing stuff last night, as didn't get any crashes.
Anyway, went back to BIOS position 1 (Asus BIOS) and the fan profile is not nearly as aggressive and the cards don't seem to get quite as hot.
Quite odd.
My testing last night appeared to show me stable at 1120 @ 1.174V. Temps om top card were 74C and bottom card was 68C.
I managed to get top card running a hell of a lot cooler by removing the shroud while leaving cooler/fan on.
Think that 1120 is pretty decent as it is a 40% OC after all. Will set up 1160 core at some time to save for a later date.
Do wish I could have hit 1200 easily, but I guess I cna live with a 40/45% OC
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XFX HD7950 Double D 1000/1575 stock voltage made my fps stay at 60 in B2k maps.
Good info.
Not doubting you, but do you have a source?
I would like to push my card a bit further this weekend, but I'm a bit weary of going over 1250mV, even for a single benchmark. Knowing a little more limits would help me massively with achieving greater scores, rather than just picking a mV figure out of the air.
For games and every day use I think I will limit to 1150 mV and then find what clocks I can get with that Voltage.
Would have to do some searching. Have been reading many forums on 79XX overclocking, and just remember that info sticking out.
I am personally quite happy with 1.74V, which I know is what some of the 7970's are, so am pretty sure it should be safe - though no guarantees I guess.
About to change my case fans around a bit and see if can improve air flow and maybe get loads temps at 1120 @ 1.174V to 70 max, but it can be difficult picking just the right fans - air flow vs noise vs static pressure, etc, etc.
I am personally quite happy with 1.74V, which I know is what some of the 7970's are, so am pretty sure it should be safe - though no guarantees I guess.
About to change my case fans around a bit and see if can improve air flow and maybe get loads temps at 1120 @ 1.174V to 70 max, but it can be difficult picking just the right fans - air flow vs noise vs static pressure, etc, etc.
I've got a FT02B, so all I do really is stick the card in and then play with the fan profile.
What are your temps like at various voltages/clocks?
I see you got up to 1200 core in other thread - when you said your temps were in 60's was that at those speeds?
If so, then I am guessing the air flow in my case must really be sucking. Suppose I didn't pick the best case, but wanted something quiet.
I've got the Asus TOP DCuii 7950 myself. Not spent a huge amount of timewith the overclocking so far. Ran it through Heaven at 1100/1575 on stock voltage once successfully but since then it's way too unstable. Even at relatively modest overclocks I think I need a voltage boost as BF3 tends to crash a bit when above 7970 clock speeds. Still, it plays BF3 fine at my native resolution so I'm not too fussed for the time being. I'll look more into OCing when games are released which really require it.
On a side note... the Asus 7950 is a beast of card dimension wise. It was an incredibly tight squeeze getting it into my old CM dominator case with the right edge protruding into the drive bays and necessitating the complete reworking of the cabling. Certainly thinking I won't be getting an identical card for crossfiring without a case upgrade!
On a side note... the Asus 7950 is a beast of card dimension wise. It was an incredibly tight squeeze getting it into my old CM dominator case with the right edge protruding into the drive bays and necessitating the complete reworking of the cabling. Certainly thinking I won't be getting an identical card for crossfiring without a case upgrade!
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That doesn't sound great Gorky, considering im about to have my Asus Top delivered today 
Stock volts on my Asus DCU II are 1.093V. I can run at 1040 core with just one bump in volts to 1.1.
That's a 30% OC, which to be honest is pretty decent. Don't think you will find a huge amount of 7950's that will run up to 1100 on stock volts (assuming 1.093V is stock).
I think cards which reach 1200 and above are in the minority, but that's purely my opinion. I could be wrong.
Again assuming that stock is 1.093V, I think getting up to 1000 on that is reasonable - that is still a 25% OC on stock.
Mid 60's when everything was stock in BF3, so 900 core and 1250 memory.
1250mV, 1200/1600 I think it peaked at 82 in Heaven. I didn't try BF3 at these settings as it was purely for the numbers. But the flat was rather warm, so I ran it again in the morning and it peaked at 78. So I would say 80, not that it's overly concerning. Fan hit 77% I think at its maximum on the stock fan profile.
I played BF3 last night at 1150mV, 1100, 1350 and the temps didn't go above 65.
I don't know what speeds I can get with what Voltage yet, so there's a lot of fine tuning to go.
I do know that the card won't do 1050/1400 ish on stock Volts, generally the game will freeze and eventually CTD. I found it stable enough at 1040/1340 though.
Not sure if you know, but I have the Sapphire OC, so I get the dual fan cooler over the reference design which may impact on temperature. I also have an Asus D2X right behind my GPU.
Hope this helps.
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