Hi Guys,
I built a PC about 1.5 years ago and I've always felt that I should be getting higher FPS in games due to the fact I have a RTX 3090. Performance has always been good but there's just this niggling feeling it should be better. It started with CP2077 where I was getting 20FPS on max settings without the use of DLSS but I accepted that the game was very demanding and enabled DLSS. Since then I've had to use DLSS in several games (Metro Exodus, Dying Light 2 etc) to get 50-60fps at maximum settings. But again I put it down to Raytracing being such a killer.
I play at 5120 x 1440 resolution and have a 5800x, RTX 3090, 4000MHZ RAM and a 750w PSU. A lot of my worry is that the PSU is underpowered and the RAM is not running at the CPU infinity fabric. However underclocking the RAM to 3600MHZ seems to make no real difference in my FPS in games. I've checked YouTube videos for game performance 4K benchmarks in the past and my performance is similar so have largely put off doing anything about it. I've always thought that perhaps I'm expecting too much.
What's kicked this off again is that my friend has recently bought a 3080ti. He has a 10850k CPU and games at the same resolution as me so we should be getting similar performance in games. He is getting 120FPS on Tiny Tina's Wonderland on Ultra and I'm getting 70-80FPS at Ultra. Obviously this is a new game so won't be well optimised and I'm taking my friends word that his settings are the same as mine so this could be nothing. However the disparity in performance does seem quite large.
I ran a benchmark on TTW with RAM @4000MHZ and @3600MHZ and there was 1FPS difference between the FPS average. All other settings were the same. So I don't know how much difference RAM speed being in sync with infinity fabric makes?.
I can't find anything which shows total system power draw. However I had GPU-Z running in the background while running the benchmarks and I can see the following peaks - Board Draw (350w), GPU chip Draw (185w), MVDDC Power Draw (115) and PWR_SRC Power Draw (125w). Those all add up to 775w which is higher than my PSU supports. So I'm thinking that my issue is probably my PSU. I do see perflimit pwr shown at certain points in both GPU-Z and HWiNFO when gaming. However my understanding is that this is due to the GPU reaching it's allocated power limit rather than the system not providing it enough power.
Sorry I realise the above is meandering so basically in summary what I'm asking is;
Is there anyway to prove that my PSU is limiting my gaming performance?
How much difference does RAM speed / IF being in sync make?
What else can I check or do to improve or better understand whether my performance is normal?
*Update with more info*
My PSU is a Corsair RMx 750W so it's not a really cheap PSU brand or anything.
I have previously checked CPU / GPU temps as well as GPU Memory temps and these have always been ok. But I will run some tests and get some figures to bring back here.
I built a PC about 1.5 years ago and I've always felt that I should be getting higher FPS in games due to the fact I have a RTX 3090. Performance has always been good but there's just this niggling feeling it should be better. It started with CP2077 where I was getting 20FPS on max settings without the use of DLSS but I accepted that the game was very demanding and enabled DLSS. Since then I've had to use DLSS in several games (Metro Exodus, Dying Light 2 etc) to get 50-60fps at maximum settings. But again I put it down to Raytracing being such a killer.
I play at 5120 x 1440 resolution and have a 5800x, RTX 3090, 4000MHZ RAM and a 750w PSU. A lot of my worry is that the PSU is underpowered and the RAM is not running at the CPU infinity fabric. However underclocking the RAM to 3600MHZ seems to make no real difference in my FPS in games. I've checked YouTube videos for game performance 4K benchmarks in the past and my performance is similar so have largely put off doing anything about it. I've always thought that perhaps I'm expecting too much.
What's kicked this off again is that my friend has recently bought a 3080ti. He has a 10850k CPU and games at the same resolution as me so we should be getting similar performance in games. He is getting 120FPS on Tiny Tina's Wonderland on Ultra and I'm getting 70-80FPS at Ultra. Obviously this is a new game so won't be well optimised and I'm taking my friends word that his settings are the same as mine so this could be nothing. However the disparity in performance does seem quite large.
I ran a benchmark on TTW with RAM @4000MHZ and @3600MHZ and there was 1FPS difference between the FPS average. All other settings were the same. So I don't know how much difference RAM speed being in sync with infinity fabric makes?.
I can't find anything which shows total system power draw. However I had GPU-Z running in the background while running the benchmarks and I can see the following peaks - Board Draw (350w), GPU chip Draw (185w), MVDDC Power Draw (115) and PWR_SRC Power Draw (125w). Those all add up to 775w which is higher than my PSU supports. So I'm thinking that my issue is probably my PSU. I do see perflimit pwr shown at certain points in both GPU-Z and HWiNFO when gaming. However my understanding is that this is due to the GPU reaching it's allocated power limit rather than the system not providing it enough power.
Sorry I realise the above is meandering so basically in summary what I'm asking is;
Is there anyway to prove that my PSU is limiting my gaming performance?
How much difference does RAM speed / IF being in sync make?
What else can I check or do to improve or better understand whether my performance is normal?
*Update with more info*
My PSU is a Corsair RMx 750W so it's not a really cheap PSU brand or anything.
I have previously checked CPU / GPU temps as well as GPU Memory temps and these have always been ok. But I will run some tests and get some figures to bring back here.
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