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Titan X Pascal massive performance issues

post #1 of 7
Thread Starter 
Hi everyone,

Just built a new rig. Everything was going extremely smoothly with performance as I expected. When I turned the computer on this morning, I suddenly had massive performance issues. (specs below after the description of the problem)

Gears of War 4, which was running at 100fps + was now running at 30. Metro Last light wouldn't run. Unigen Heaven was single digits.

I immediately reseated the card and the power cables thinking that it was a power issue. That didn't work, so I did a clean install of drivers (uninstall, ddu clean, safe mode install) and that didn't work.

After another reseating and using different power outputs on my psu, I got some performance back. In comparison to benchmarks I found online at babeltechreviews for my resolution of 3440x1440, I am still running at about 20% less frames than I should be getting. However, since trying further reseatings and cable configs, I am back to single digit frames.

I have cleared the cmos, used different psu cables, reseated the gpu a number of times, forced windows into performance mode, forced my pci-e to 3.0 is bios.

The only hint I have gotten is that the power consumption of the card is only about 40% according to afterburner. I still have to try a full clean install of windows, but I have a feeling it won't do anything. This looks like a power problem to me. I will try another psu and a new installation of windows tomorrow. The gpu is also on a pcie riser, as I'm using a thermaltake core P5 with the gpu mounted vertically. I will also try remounting the gpu horizontally to see if the riser cable is the issue.

Do you guys have any idea what the problem can be? I would really appreciate any help you can offer!

Thanks!

specs:
MSI x99a gaming pro carbon
intel 6800k currently stock
gskill trident 3200mhz quad channel cas14
Titan X Pascal
Corsair ax860
Samsung 512gb m.2
post #2 of 7
Thread Starter 
An update or two:

The cpu went through the cpu-z benchmark and got comparable scores to what I've seen around the web. Memtest passed as well. So it must be isolated to the GPU.

A new symptom is that the computer has stopped outputting video. I turn it on, it goes through post just fine, but no splash screen or video happen. Hard to do a reinstall without video. Guess the next step is to install the gpu without the pci-e riser.

Please let me know if you guys have any thoughts as to what could be wrong!
post #3 of 7
Are you on Windows 10?
post #4 of 7
Quote:
Originally Posted by thiererj View Post

An update or two:

The cpu went through the cpu-z benchmark and got comparable scores to what I've seen around the web. Memtest passed as well. So it must be isolated to the GPU.

A new symptom is that the computer has stopped outputting video. I turn it on, it goes through post just fine, but no splash screen or video happen. Hard to do a reinstall without video. Guess the next step is to install the gpu without the pci-e riser.

Please let me know if you guys have any thoughts as to what could be wrong!

that screams to me where things are not happy. Unless its a hard PCI-E riser or the more expensive and higher quality 3M riser, its quite dangerous to be messing with those pci-e lanes due to their high speed signals and transmission line issues that will occur. (and when i say dangerous, i mean its probably going to make things not work. shouldn't be causing any permanent damage or anything..)

What most likely is that something has gone south with the pci-e riser.
post #5 of 7
Thread Starter 
Thanks IMI4tth3w!

Yeah, so I uninstalled the the riser cable and socketed the GPU directly into the motherboard. I instantly broke out of the "very low frames" scenario back into the realm of normal. I figured any performance I was missing at that point was from the boost clock lowering due to hitting the 84c temp limit. I raised the power limit a tad and jacked up the fan speed and everything was equal to or better than benchmarks. Unigine Heaven is still 5 fps or so slow, but I'm not oc'ed at all on either card or cpu, so that is probably fine.

Seems I have a hot card! After a little research, seems like there are some negative reviews for Thermaltake's pci e riser. Also Deepcool's.

You mentioned 3M making quality risers, I'll look into it. Any particular things I need to be looking for? Maybe powered risers?
post #6 of 7
Thread Starter 
Yes I'm on windows 10!
post #7 of 7
These Titan X cards are very much screaming for Liquid Cooling.....

Also I have found two big issues that can limit your performance...

1) G-Sync, turn it off and check the difference, for me it's up to 25%!, you really don't need G-Sync if you're hitting your refresh rate anyhow...

2) Rivaturner, has a built in FPS limiter, check to see if you accidentally set that or flat our get rid of that smile.gif
Edited by X3NEIZE - 10/18/16 at 11:40am
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