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GTX 980 Ti low core clocks, low temps

Guest2

Guest2

Guest2

Soldato
Joined
6 May 2009
Posts
20,325
I recently purchased an EVGA GTX 980 Ti Classified. The memory clocks well and is stable at +650Mhz.

The core I can clock to +50, which boosts to ~1450Mhz but much more and either the drivers crash or machine freezes, even with a power target of 115% and increased voltage.

Using a custom fan curve I rarely see the card going over 70c, max for the 980 Ti I believe is 84c.

Is there something I am missing such as BIOS, driver version or other overclock settings so I can try and reach 1500-1550 boost which is apparently the standard? It doesnt make sense to me that a card crashes out with low temps because if I was on water / LN2 then temps would be very low but the card would still crash

I am using driver 361.** (but not the latest 361.91)

Thanks
 
Probably needs more power and voltage to go higher. You are running it pretty high as it is but likely needs a custom Bios to get more out of it and remove Perfcaps etc.

There's a great thread here with custom Bios for the Gigabyte series. Not directly suitable for your card but you could download and copy the settings and make a new Bios then flash it. Or get someone to help.

Of course all done at your own risk!

Edit - If you look on the second to last page, the thread and Bios creator has already made a Bios for the Classy. Check with him that it's suitable before use though.
 
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I think they don't bin classy cards any more if i remember right or remember some one mentioning it. Either way 1450 being the max on the classy seems bit poor. Most people seem to get 1500 on stock volts. I mean mine does 1540 on the core on stock volts and ive yet to see the power usage break 100% but mines set to 110% max so plenty of room.
 
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It's not just about temps and 1450 isn't all that bad from what I've seen. Remember some people will only bench at 1500+ and won't necessarily run this clock 24/7. If they aren't binned and you can run 1450 on any title for prolonged periods, I'd be fairly happy as the cooler is decent to. I'd be dissapointed at 1400 max maybe.
 
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Guest2 said:
I recently purchased an EVGA GTX 980 Ti Classified. The memory clocks well and is stable at +650Mhz.

The core I can clock to +50, which boosts to ~1450Mhz but much more and either the drivers crash or machine freezes, even with a power target of 115% and increased voltage.

Using a custom fan curve I rarely see the card going over 70c, max for the 980 Ti I believe is 84c.

Is there something I am missing such as BIOS, driver version or other overclock settings so I can try and reach 1500-1550 boost which is apparently the standard? It doesnt make sense to me that a card crashes out with low temps because if I was on water / LN2 then temps would be very low but the card would still crash

I am using driver 361.** (but not the latest 361.91)

Thanks
Click to expand...

Had to watercool mine to get it stable at 1495 Mhz. 1450mhz is probably what I'd stick to on air.
 
There may be no standard but if i had spent thousands on a water or LN2 setup then couldnt reach what most cards do on air then i would be pretty miffed! Reviews also have them being clocked to 1500mhz boost + on air. Reviews of the lower end cards Like the SC ACX also go higher on the core.

Not sure about binned but mine has samsung memory instead of hynix. I read samsung is usually for the kingpin editions.

Its dual bios but i would have thought a bios update is not required really. I thought it may be a driver issue but there are that many nvidia driver version i have no idea which to use
 
Guest2 said:
There may be no standard but if i had spent thousands on a water or LN2 setup then couldnt reach what most cards do on air then i would be pretty miffed! Reviews also have them being clocked to 1500mhz boost + on air. Reviews of the lower end cards Like the SC ACX also go higher on the core.

Not sure about binned but mine has samsung memory instead of hynix. I read samsung is usually for the kingpin editions.

Its dual bios but i would have thought a bios update is not required really. I thought it may be a driver issue but there are that many nvidia driver version i have no idea which to use
Click to expand...

Well mine's running 1495mhz all the time, so it's a bit different from boosting the clocks for a short period of time. I could probably go higher, but would risk it not being stable in some games, so I'm happy. The point of watercooling is not just to get higher clocks, but lower temps and lower noise as well. Haven't run into any game that I couldn't run maxed out at 90fps+.
 
What's the ASIC quality? Mine does 1420-1450 at stock,no fan curve or anything. Overclocked on air with no fan curve it does 8000 vram and 1560-1580, not tried higher. Also has Samsung memory on mine.

I just leave it on stock for normal use.
 
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Having read this review here I seems to have done pretty well - http://www.hardwareasylum.com/reviews/video/evga_gtx980ti_classified/page13.aspx

Overclocking the Maxwell is a little different from legacy generation GPUs since you must contend with a non-adjustable Boost Clock. NVidia Boost 2.0 is a form of dynamic overclocking that is determined either by GPU temperature or a predetermined power target. Assuming your GPU is below the programmed temperature the clock speed will scale until it consumes enough power to trip the power target. For these tests we first set out using the stock BIOS and quickly discovered that the card would max out at around 1485Mhz. Voltage adjustments were ineffective using both the stock BIOS images and the special LN2 extreme BIOS images.

As it would turn out the GTX 980 Ti doesn’t appear to scale with voltage but does respond well to temperature. This was evident when letting the card rest and then setting frequency before running a benchmark. Doing this we got the card up to 1508Mhz at which point the driver crashed shortly after. It might be time to break out the LN2 again.
Click to expand...

What I don't understand is this 'It might be time to break out the LN2 again.'

Even if it was broken out and temps were reduced to -100c, wouldn't it still crash if it was at 1508Mhz? Or do they mean break out the LN2 and use a custom bios to set a much higher voltage first?
 
980ti is all silicone lottery.

1450 is within ballpark figures for a 980Ti. I have a classified also and have it at 1480 presently. I had it running a 1525 but got a system freeze after a few hours playing.

I am under water and have not applied any of the +mv available...simply because 1480 core is plenty of horsepower.
 
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Guest2 said:
Stock settings and no fan curve tested and at first it holds a 1405Mhz boost but as temps rise it drops to 1380mhz at around 67c. Obviously the core clock boost is linked to the temperature.

Think i'll stick with my custom fan curve +50 core, +650 memory (1455 max core, 4158 max mem)

http://i.imgur.com/wqfvBwf.jpg


Interesting post from k|ngp|n here

https://www.kingpincooling.com/forum/showpost.php?p=30273&postcount=57
Click to expand...

Yea voltage and core clock drops when hittin 60 degrees and then again at 70 degrees. Well found tht on my card
 
r7slayer said:
Yea voltage and core clock drops when hittin 60 degrees and then again at 70 degrees. Well found tht on my card
Click to expand...

Thats my point. 60c and it drops! The card can take 92c so IMO should be able to clock the knackers off it until it hits 80c at the minimum.
 
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