I just put this pc together days ago. I ran through some tests and all seems fine, but I don't seem to be getting the frames per second I should be getting. I've seen many benchmarks where similar pc's are getting over 120 fps in Fallout 4 and Witcher 3 on max settings at 1920x1080. I am getting 75 fps in Fallout 4 and about 90 in Witcher 3 at 1920x1080. I believe my settings are identical to the benchmarks. I'm running RivaTuner and EVGA Precision XOC while playing Fallout 4 and Witcher 3. I have the games on max settings. My CPU temps hover around 50 while playing. My GPU temps hover around 60. Seems to be running relatively cool. I don't think heat is a factor. Here's the strange thing — I get the same 75 fps in Fallout 4 when I lower all the settings to low.
 
I'm using Windows 10 64-bit with Nvidia drivers v378.92 for Windows 10 64-bit. I have not overclocked anything yet. I am a bit new at building a new pc. What could explain my unexpectedly low frames per second? What might I have done wrong? What could I do to try and see improvement? Keep in mind that I am a bit new to starting a build from scratch. Could there be something I forgot to do? I installed the INF drivers for the motherboard. I installed the Nvidia drivers. Or do I have a bad video card? Your time and courtesy are tremendously appreciated.
 
Here is just one of the many GTX 1080 + Fallout 4 benchmarks that indicate a fps much higher than I am getting. - guru3d.com/articles-pages/nvidia-geforce-gtx-1080-review,19.html
 
This is a list of everything in this pc - pcpartpicker.com/list/BfLrhq
 
Attached is an image of some specs provided by CPU-Z and Speccy, and a link to the image just in case - i.imgur.com/vzQF4dD.jpg

Welcome to the Forum Six6igma
 
Your Computer Parts: http://pcpartpicker.com/list/BfLrhq
 
I bet you are over heating in this case

With This Card:

 
 
Click on Image Twice for a Larger View
(Your Idle GPU Temp looks to be 60C, that is a little warm for an Idle Card.)

60C at idle?
 
For comparison's sake my 1080 SC that I had prior to stepping up was idling at half that temp...  10,800 on Firestrike is also about 7000+ points less than what I got with the same CPU and GPU as recently as a month ago.
 
 

I shut down the pc and rebooted. I updated 3DMark. Here are the results -
 
3dmark.com/3dm/19021051

My sincerest apologies. Another shut down and fresh reboot. A new run of an updated Fire Strike. Here is the link - 3dmark.com/3dm/19021899

Make sure that your GPU power mode is set to Max Performance under nVidia Control Panel

Six6igma
I installed RivaTuner and EVGA Precision XOC so that I can see an on-screen-display while playing a game. I'm not sure what I was doing when took a screenshot of that speccy run. According to a new speccy run, my gpu idle temp hovers around 32 degrees. According to EVGA Precision while playing Fallout 4 at 1920x1080 and Ultra settings, My GPU temp is 36 degrees, my CPU temp is 52 degrees, and my fps hovers between 72 and 74 no matter what I do. All that while the GPU clock bounces between ~1700 and 1810 Mhz, and memory clock is 5006 Mhz. I could almost swear that I saw the GPU clock say 2001 Mhz for a minute or so while playing.
 
I'm usually good at diagnosing problems but I am coming from a Windows 7 rig with a Core2Duo and Radeon HD 6850. I am completely new to Windows 10 and Nvidia. I really appreciate whatever help you can provide.

First was that 36 degree gpu temp correct? Unless you are on water that temp is way low, and may indicate the card isn't being used. Add card usage to you osd and see if it stays near 100%.

Also kinda like the is it plugged in step, make sure your card is in the proper pice slot for single gpu in your mb manual.

You may also want to make sure the Intel gpu on your cpu isn't somehow being used.

This may also seem stupid but you plugged your hdmi/dp cable into the gpu and not the mother board right.

rjrusso
Make sure that your GPU power mode is set to Max Performance under nVidia Control Panel

 
Highly advise not doing that globally. Only per game. If you do it globally the card will always run at base clock and never clock down. Which gives you higher temps as well. 

I just remembered fallout 4 is Fps capped at 72. It has something to do with physics being tied to its engine. Unless Bethesda made a serious change I believe that is still the case without an ini tweek

I've been a pc enthusiast since the late 1980's. I credit forums such as this one for providing such important and valuable information. Undoubtedly, some future reader with tech issues will search and find this thread. I feel obligated to post news of success and things I have learned in the process. I was able to achieve 130+ fps at 1080p with Fallout 4 running at full Ultra settings. Fallout 4 was indeed capped at ~70 fps. That cap can be removed by changing "iPresentInterval=1" to "iPresentInterval=0" found in both Fallout4.ini and Fallout4Prefs.ini which I found in Documents>My Games>Fallout4. Also, I discovered why my idle GPU temps were so high. I am using Nvidia drivers v378.92 for Windows 10 64-bit. I went to Nvidia Control Panel>Manage 3D settings>Power management mode. I changed the setting there to "Adaptive". Applying that setting immediately reduced my idle GPU temps to 32 degrees. I also learned to be more scientific and professional when running benchmarks. I shut down and reboot the pc before running a benchmark. I make sure that there is nothing else running besides the benchmark, and I make sure not to use the pc while the benchmark is running. My results now appear to be quite similar to those I have found when studying professional benchmark testing of similar builds.
 
I am doing further testing. This pc is barely a week old and I have more benchmarks to run. I am pleased. Thank you all for the extremely helpful suggestions and courteous advice.