GPU running slower after sometime.

Dragonic

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My GPU is a 970. When I turn the PC on its running OK but after 20-40 minutes of gaming or benchmarking it starts to run waaaaay slower. Clock goes from 1530 to 568 or so, memory also goes down to about half of the capacities. Tdp and Temps also go down, just like if I'm not doing anything heavy like gaming.

What could be the cause? My PSU is a CS650M from Corsair and I'm pretty sure I have 100-50w spare even at full load.

In Heaven Benchmark, FPS start to run about 60 to 70% slower.

System:


Sabertooth 990FX R2
FX-8350
2x8Gb HyperX Fury 1866mhz
H55 AIO Cooler.
x4 Case Fans from Corsair.
CS650M PSU
GTX 970 G1 Gaming


Thanks.
 

Dragonic

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It is. +0,013v +150Mhz Clock and +350 mem 112% Power Limit.

I tried with and without OC, both ways it slows down. It begun happening yesterday.

 

Dragonic

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Btw, I don't think this has anything to do with this situation but since hardware is not an exact science: I changed the RAM timers from 11-11-11-30 to 10-11-10-28 and bumped voltage up to 1,55v.

May this be causing something? Because right after that I've noticed that the boot took a bit longer than usual.
 

Dragonic

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Dude, this is happening even w/o OC. It only goes back to full power when I restart the Computer. Maybe +0,013v isn't enough for my current OC?

About limits, no. G1 Gaming can go even further.
 

Gallarian

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So you updated the drivers yesterday? And this started happening yesterday? Could be a link there.

Try rolling back the drivers and see if it continues.
 

Dragonic

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Now that your sayin... Yesterday I was playing Sonic with stable OC and FPS. I played before school and when I came back I updated the driver. I remember somewhat of lagg when playing RuneScape and Sonic yesterday.

Can I roll back the driver through Nvidia Control Pannel or do I need to go to Nvidia Web page and search it there?
 

Dragonic

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CPU idle 19°C and full load 46°C
GPU depending on the room temp is usually around 68 to 72 while running Heaven Benchmark.

About the Power Limit I just bumped it at MSI Afterburner.
Mine is from Gigabyte, yours might not have the same due to other brand.
 
I thought all 970's were capped in bios. I'm currently on precision X. Will try afterburner.

Something is throttling. I don't believe your CPU temps are correct as even with a AIO the best you can achieve would be 5-10C above ambient at idle, which puts your room temp at a max of 14-15C.

The GPU has to be the throttling element as it's clocks are dropping. Try running it on temp limit and not power limit on afterburner. But your GPU temps do seem to be OK.
 

Dragonic

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Well AMD has wrong temps reads anyway, but it's only 19°C when 0% load. When in 6-9% it's about 24 to 27°C. "Cool" temps if you ask me.

About the throttling it's most unlikely because when it real throtts it only goes about 40 to 50Mhz down. Memory stays the same.

I think it's the driver that went ape shit but not sure.
 

Gallarian

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I believe the Geforce Experience app can do it for you, but if not just download the previous driver, uninstall your current ones and then run the install process on the earlier ones.

I would try this before you start messing with your voltages and overclocks. This could definitely be the issue.
 

Dragonic

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I have a Corsair Carbide Series Spec-01 as case.
2 Fans front, H55 on the back with an extra fan in the from of the Rad and the last fan above Ram throwing hot air away.

Bad enough? Btw the Rad fans are blowing outside air in.
 

Dragonic

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One last thing, since I only played around with the cars using software, no other things, I still have warranty or is it over? I'm considering the worst case scenario where my card is dying.
 

Dragonic

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Well, I downgraded the driver back to 361.91 and everything went back to normal. Also, my OC was also unstable.
Now I got it stable. +140 (~1520-1534Mhz) clock and +580 (2043Mhz) mem with +0,083v.
Yay.
 

Gallarian

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Good to know that youve sorted your issues.

Sometimes drivers causes issues for a small amount of people with specific hardware. Luckily, Nvidia releases new ones often, so just skip this one and install the next one they release :) Please pick a solution so this thread is marked as 'solved'!