Is my CPU bottlenecking my GPU?

Aidan P

Distinguished
Sep 20, 2013
126
0
18,690
Hi all,

I recently started playing Battlefield 1 again after some time and I was noticing I was having framerate drops and stutters which I don't usually get in any games (I run on ultra settings at 1080p). I opened task manager to find that BF1 itself is using 90-100% of my CPU continuously while my GPU is only at around 50-70% load.

My CPU is an intel core i7 3770 @ 3.4GHz.
My GPU is a GTX 1070 8GB slightly overclocked in Afterburner.

Would it be worth considering a CPU upgrade and if so which would get me the best upgrade for my money?

Thanks.
 
Solution
okay, it could have just been an unstable OC on the GPU. Yeah, 80-100% for CPU generally speaking is fine (spcially if your GPU is maxed at 100%). It can indicate a bottleneck on the GPU, if the GPU has a lower load. This could also be attributed to havig V-sync on. Make sure it is off, and also try resetting the Nvdia Global settings to default. Let us know how that goes :)

Also, even though you have a 4c/8t CPU, make sure to minimize back round tasks running, and see if that effects it.


hmmm. the i7 isn't a bad CPU at all, and has a turbo boost of 3.9 so for most games it's not gonna bottleneck, and should be fine for high fps, and smooth game-play, specially with a GTX1070. BF1 makes better use of cores/threads so as zyh1987 pointed out, the Ivy Bridge proc may be getting maxed out.
With that said, how much ram do you have? Particularly for BF1 it uses (along with system processes) upwards of 9gbs whilst gaming. If you only have 8gbs installed, that is most likely the problem, as once your system ram maxes out it starts using the HD as a swap file and can kill FPS.

Try something like HWMon to monitor CPU/GPU usage, voltage etc. Its much more accurate than task-manager, and will give a better indication of issues.

edit: also, OC'ing your GPU in this instance with your CPU, will yield practically zero performance increase. Maybe a few FPS here and there, Take the OC off, and see if that makes a difference.
 

Aidan P

Distinguished
Sep 20, 2013
126
0
18,690


That is something I was forgetting, I guess the cost wouldn't be worth it overall?
 

Aidan P

Distinguished
Sep 20, 2013
126
0
18,690


I've just played a couple of games without the OC and it seemed smoother, also had HWMon running and it gave the same results as task manager - CPU around 80-100% load while GPU ~50-70% load. Also, I have 16GB of DDR3 RAM.
 
okay, it could have just been an unstable OC on the GPU. Yeah, 80-100% for CPU generally speaking is fine (spcially if your GPU is maxed at 100%). It can indicate a bottleneck on the GPU, if the GPU has a lower load. This could also be attributed to havig V-sync on. Make sure it is off, and also try resetting the Nvdia Global settings to default. Let us know how that goes :)

Also, even though you have a 4c/8t CPU, make sure to minimize back round tasks running, and see if that effects it.


 
Solution

Aidan P

Distinguished
Sep 20, 2013
126
0
18,690


Disabling V-sync has made definitely helped thanks!
 


Excellent. Result :)
 

TRENDING THREADS