Under-performing i5-4690K & GTX 980 Gaming Build

eatlunch33

Reputable
Nov 12, 2015
9
0
4,510
Hello.

My brother and I have put together a pc for my brother to use as a gaming machine. Unfortunately, the pc is under performing with low fps in games. As an example, my brother just installed Fallout 4 on this computer and is getting fps as low as 20-30 on average and drops down to 10-20 range on ultra settings (1080p). Even with lowest possible settings (keeping 1080 resolution) the performance drops to 10-20 range with average of 30-40 fps. The pc specs are as follows:

CPU: Intel i5-4690K @ 3.5GHz
CPU cooler: Stock Intel CPU cooler that came with CPU
GPU: EVGA GeForce GTX 980 4GB 256-bit GDDR5 @ 1126MHz Base, 1216 MHz Boost
Motherboard: ASRock Z79 Anniversary LGA 1150 Intel Z97 ATX
RAM: G.SKILL Ripjaws X Series 8GB (2x4GB) 240-pin DDR3 2400
PSU: Rosewill Hive 750W modular, 80 plus bronze certified
HDD: Western Digital Blue 1TB 7200 RPM, 64MB cache, SATA 6.0GB/s
SSD: Samsung EVO 840 128GB SSD
OS: Windows 10 Pro 64-bit

The OS is installed on the SSD and the majority of games are installed on the HDD. Nothing has been overclocked. It is all running at stock/factory settings. This under performance issue is present in other games (not a Fallout 4 specific issue). Graphics driver & OS is up to date.

So, my questions are: Have I missed an obvious bottleneck in this build? Do you have any recommendations of how I may go about testing the performance of individual pieces of hardware to try and find a faulty part/bottleneck? If this isn't a hardware issue, what possible software issues could be the cause of this? Would you recommend a reinstall of windows?

Please ask for more information if needed/will help :)

Many thanks!
 

eatlunch33

Reputable
Nov 12, 2015
9
0
4,510


I'm pretty certain the PC is running on the gpu. DVI cable is plugged into graphics card, not motherboard. Is there someway I can check to make sure the gpu is being used?
 

eatlunch33

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Nov 12, 2015
9
0
4,510


I'll be getting the software to check cpu/gpu speeds while gaming & i'll post results, as well as temps. Using a DVI cable that is plugged into GPU output. OS install was clean when new. Its getting to be about a year old now.
 

eatlunch33

Reputable
Nov 12, 2015
9
0
4,510
Any recommendations on what software should be used to monitor GPU & CPU clockspeeds while gaming/in-game? What kind of clockspeeds should I see? Should I see the stock clocks, since there has been no overclocking done to this machine?
 

eatlunch33

Reputable
Nov 12, 2015
9
0
4,510
The GPU usage only goes to about 40-50% usage on ultra settings, 1080p in Fallout 4. The CPU cores are all up at 90-100% usage. Temps are fine and clockspeeds of GPU are a bit lower than stock. Does this indicate any possible sources of the issue?