GTX 1080 TI: Low FPS at 100% usage

icecrusher

Prominent
Jan 26, 2018
4
0
510
Hi there!

So I've had my GTX 1080 TI for a while now (in a originally pre-built pc which I upgraded on my own) but procrastinated on really getting to know my setup and making the most out of it.

My problem is that I can't figure out why my fps are generally so low, even though my GPU runs at 100%. This concerns most games I play, including WoW, KSP (very CPU-heavy, I know), ESO, Total War: Warhammer, Tomb Raider (ingame benchmark fps: min 22, avg 26, max 32) and others. I'm playing on a 3440x1440 ultrawide, but I still think a 1080 TI should be able to handle this on some of the highest settings. I'll get around 20-40 fps, depending on where I am/what's going on - changing settings doesn't make a huge difference most of the time.

I ran multiple benchmarking programs (for 3Dmark see here) and got around 10 fps most of the time. Temperatures for GPU and CPU are around 35° C idle, regular use 55° C and go to maybe 70° C when under stress.

I played around with NVIDIAs settings (G-sync on/off, scaling, PhysX) and cleaned the drivers with DDU and reinstalled the newest ones.

Sooner or later I'll upgrade my CPU (and MoBo), but the current one shouldn't be bottlenecking my system, right? Especially since its usage is nowhere near 100%.

My full setup (all stock settings, no overclocking yet):


  • GPU: GeForce GTX 1080 Ti
    CPU: Intel Core i7 4770 @ 3.40GHz
    RAM: 32.0GB Dual-Channel DDR3 @ 798MHz
    Monitor: ROG PG348Q (3440x1440@100Hz)
    OS: Windows 10 Home 64-bit

I've spent many hours skimming through the internet but I'm out of ideas what to try next. So any help and tips would be appreciated! If any additional information is needed, I'm happy to provide it.
 
Solution


I'd be talking to the manufacturer. It's not behaving like it should. You're right about the 4770. You have more than enough RAM as well.
 

icecrusher

Prominent
Jan 26, 2018
4
0
510
Thank you for your answer!

With the shortage of GPUs right now - because everyone is mining on them - I'd like to make sure that I checked all possible scenarios before sending it in (my vendor doesn't even have any 1080 TI's in stock at the moment).

So in the meantime I tested how it'd behave with a normal 1920x1080 monitor, as well as switching out my 1080 TI for my old GTX 760. I couldn't find anything strange though - results with the smaller screen were slightly better, but nothing out of the ordinary. With the 760 I had worse results than with the 1080 TI (as expected, so no real conclusion can be drawn there either.

However, after changing back to the 1080 TI, I noticed that I have it powered via one 8 pin plug + one 2 pin plug (remnants from the pre-built computer, including its 500W psu), leaving 6 pins on the GPU empty.

So far I didn't consider power supply as a possible culprit, since MSI Afterburner showed my GPU at 100% and I thought that'd only happen if it actually has enough power. Could this be the issue?
 


You have an 8 pin plugged in and then only a 2 pin? Yes, that's an issue. I'm confused. Are you using a 500W PSU for a 1080Ti? That would be 2 problems. It needs a 600W PSU minimum. I chose Seasonic's 650W 80+ Gold PSU for $69. Mine needs no less than 2 6+2(or 8) PCIe Supplemental Power cables. 75W from the PCIe slot and up to 150W per 8 pin connector.
 
Solution

icecrusher

Prominent
Jan 26, 2018
4
0
510

Yes and yes - just goes to show that I really didn't inform myself enough when I started customising...

The pre-built PC had a 500W PSU which connected to the GTX 760 via 2x 6-pin plugs and had an unused 2-pin hanging around. So when I bought the 1080 TI I just connected those two 6-pin plugs via the included adapter (2x6 to 1x8) and the leftover 2-pin plug to the GPU. As it started up without issue I never thought more of it. Would you guess that this is the main-issue here, i.e. the GPU showing full usage is merely 100% of what the provided power can do, instead of the actual max?

So I'll have to get a stronger PSU and make sure I connect that via 2x 8-pins to my GPU, correct? And as I'm probably going to upgrade my MoBo + CPU at some point soon (and slowly work my way into slight overclocking), would it make sense to go higher than around 650W PSU or would it simply be overkill?
 


Okay... That's a lesson learned.

https://www.newegg.com/Product/Product.aspx?Item=N82E16817139200 will handle your system just fine.

https://www.newegg.com/Product/Product.aspx?Item=N82E16817151118&cm_re=650W-_-17-151-118-_-Product is what I chose for my system.
2018_PC.png


https://www.newegg.com/Product/Product.aspx?Item=N82E16817151186&cm_re=Seasonic_focus-_-17-151-186-_-Product is slightly better with a bigger fan. It'll be a wee bit quieter.

https://www.newegg.com/Product/Product.aspx?Item=N82E16817139121&cm_re=Corsair_650RM-_-17-139-121-_-Product if you don't mind refurbished.

I've done my homework because I needed to be sure my system, with the case and it's 5 fans would have enough to eat. 650W is enough. My system uses about 500W at full load. it has no less than a 100W over provision. About the only thing I can add is 1 more HDD or SSD. I have 2 fans up front. One fan up top that sits next to my GFX card's 120mm radiator with its attached 120mm fan, 2 120mm fans on my 212 Evo and a fan on the rear of the case. I took all that into account during the 9 months I had to save.
 

icecrusher

Prominent
Jan 26, 2018
4
0
510
Alright, thank you very much for your help and detailed answers :)

I'll get myself a new PSU and hope that this was the sole issue, while keeping in mind what future upgrades I might want to make. But this time not before getting acquainted with the specifics of all the parts...