GTX 1080 and CPU bound?

Evening CMDRs,

I was going to post this in the VRMark thread but think it might be better in a new one.

I've got an I5 4670k and an EVGA GTX 1080 ftw and I'm pretty convinced that ASW is often kicking in because my system goes CPU bound. When I first got the 1080 I noticed that with the VR ultra preset my CPU would often hit 100% in stations but the GPU would be around 60%. I eventually concluded, after turning ASW off and ramping up SS etc, that I was CPU bound so asked a mate wth an I7 4790k and a rift to see if if ASW kept kicking in for him before I blew even more money on my PC and he was having the exact same thing experience. I decided not to bother upgrading and stopped thinking about it.

For some reason the other day I decided to change my custom settings to VRhigh and I was getting 90fps everywhere until I decided to do the CG. Even in the hanger ASW kicks in. So I tried switching to solo. No ASW kick in.

What I think is happening is that up to a certain level of graphic detail 90fps is no problem but beyond that the CPU struggles to tell the GPU what to do fast enough, it bottlenecks occasionally so ASW kicks in. If you think you have found a good balance for your GPU but then your CPU gets a bit busy then suddenly ASW kicks in (or you drop below 90 fps if ASW is turned off). The thing is you can really start upping the graphic details around this point and nothing really happens to you FPS because you GPU is doing the heavy lifting. The worrying thing here is that and i5 and i7 aren't different enough that ASW doesn't kick in and when ASW does kick in that nice expensive 1080 is only running at around 60% load.

My system only has 8GB of ram so perhaps that is a factor for me but the CPU load vs GPU load vs FPS seems to suggest some weird outcomes that maby other mights find as well if you experiment.
 
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uhm... my cpu hovers around 40-50% usage no matter what or where and i use vr ultra, blur off + ss1.6 . i do notice that my ram usage is around 7-8gb, that could be your problem if its using pagefile. id suggest an extra 8gb.

. only game that pushes mine is BF1 where its up around 70-80.
 
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I monitor my GPU CPU and RAM constantly during game. And RAM does exceed 8Gb at times. Could be the sticking point ?

Flimley
 
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uhm... my cpu hovers around 40-50% usage no matter what or where and i use vr ultra, blur off + ss1.6 . i do notice that my ram usage is around 7-8gb, that could be your problem if its using pagefile. id suggest an extra 8gb.

. only game that pushes mine is BF1 where its up around 70-80.

Thats about where my I7-4790K is too. I overclock it to 4800MHz and have had zero problems runs great, just unpark the threads and it really is a great chip for the 299 I spent on it. Throw that on an ASUS motherboard and attach that 1080 you will be good to go. V97 Pro works very well with that chipset even has an M.2 slot and the board is fairly inexpensive now comparitively speaking
 
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Thats about where my I7-4790K is too. I overclock it to 4800MHz and have had zero problems runs great, just unpark the threads and it really is a great chip for the 299 I spent on it. Throw that on an ASUS motherboard and attach that 1080 you will be good to go. V97 Pro works very well with that chipset even has an M.2 slot and the board is fairly inexpensive now comparitively speaking

asrock extreme 6 ^_^ here .. wiiicked board.
 
asrock extreme 6 ^_^ here .. wiiicked board.

Thanks for all the replies. I've only got a very light overlock because I'm on the stock cooler but perhaps it time to change that. Interesting to see people are going over 8Gb, perhaps my system is hiding an issue by using the cache. Seems like a another 8GB of ram and a better cooler is in order, alteast that is a relatively inexpensive upgrade.

Cheers
 
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