No bottlenecks but still low FPS. Why?

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gowthamn

gowthamn

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Jul 19, 2012
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I have GTX 1080 SLI with i5-4670k. They are overclocked a bit and use only air cooling. I have 16 GM ram.

I have a 3440 x 1440, 100Hz Gsync Monitor.

I am playing Mass effect Andromeda at Ultra settings.

My usage is as follows:


CPU - 75% to 85% usage at 75*C. Max single core usage goes upto 90% usage
GPU - Both GPUs below 75*C and run around 2000Mhz. Usage around 60 to 75%
RAM - 53% of RAM used

Since none of the hardware is bottle-necking individually why do I get just 60 FPS or below? It goes as low as 40 FPS sometimes. VSync is at 100 FPS.

 
Solution
Jester Maroc
While reading the first sentence of your post my immediate thoughts were...i5 bottleneck! However, since you are confident that CPU usage (even on single cores) does not exceed 90% it is hard to confidently say that. Nevertheless, I cannot help but feel that your bottleneck must be the CPU.

Can you provide details about the components in your system? What are you using to monitor CPU/GPU usage? How are your temps? Is this something you only notice in Mass Effect or are you seeing similar performance dips in other games?
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Jester Maroc

Jester Maroc

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While reading the first sentence of your post my immediate thoughts were...i5 bottleneck! However, since you are confident that CPU usage (even on single cores) does not exceed 90% it is hard to confidently say that. Nevertheless, I cannot help but feel that your bottleneck must be the CPU.

Can you provide details about the components in your system? What are you using to monitor CPU/GPU usage? How are your temps? Is this something you only notice in Mass Effect or are you seeing similar performance dips in other games?
 
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Solution
J

jaslion

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Dec 17, 2012
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Turn of sli that can help you
 
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Jester Maroc

Jester Maroc

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I would recommend reading this: http://www.pcgamer.com/mass-effect-andromeda-pc-performance-analysis/

"And as one final look at performance, I was able to test SLI with two of MSI's GTX 1080 Gaming X 8G cards. I updated the test systems to the 378.92 drivers, as prior to that SLI actually reduced performance substantially vs. a single GPU.

For this test, I also ran the cards in an X99 system (MSI X99A Gaming Pro Carbon plus i7-5930K), to see if the extra PCIe lanes on X99 would make a difference. This is using an HB SLI bridge as well, so that's not a potential bottleneck. The verdict? Yes, except at 1080p medium (which you wouldn't be using with 1080 SLI)."

I am assuming that you have a Z series MB. In that case your total PCI lanes would be 36 (16-CPU and 20-MB). If you have more than one M.2 drive and an expansion card/s in your system you could be running out of PCI lanes.
 
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