VR performance with 1080ti

Discussion in 'Assetto Corsa' started by Authense, Jun 18, 2018.

  1. RasmusP

    RasmusP
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    Looks great indeed! A year ago I did some air flow diagrams because I wasn't happy with my cooling. My criticism about AiO Watercooling is mainly due to bad air flow but with the watercooler in the top it's a different story!
    And it works beautifully as you proofed :)
    Here are my charts and why I would always say: put the WC in the top or go air only:
    upload_2018-7-4_12-50-39.png
    upload_2018-7-4_12-50-58.png upload_2018-7-4_12-51-16.png upload_2018-7-4_12-51-33.png
     
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  2. Authense

    Authense
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    Rasmus, very interesting indeed and valuable ground work.

    Another point is to change the Fan Setup in the BIOS as they can be measuring MB or CPU temps and the watercolor onboard connector must be changed from "FAN" to watercooler to allows for maximum power all the time. Of course, you need to take notes about what is connected to which connector.

    In my case the chassis fan was set to MB by the factory and I changed that to CPU.

    Why?

    If the CPU is under stress and requires more cooling it will go hand in hand with the GPU which itself will produce additional heat through its 2 fans and the watercooler fans will be at maximum RPM blowing even more hot air into the case. In this moment I want the chassis fan to kick in based on the same measure instead of waiting for MB temp to rise.

    It seems that the Kraken software can not override these BIOS settings, which is technically correct but not wanted in this case. The Kraken software also does not know which onboard connector is used and the ASRock windows utility tells you they are all fans because it only reads what the BIOS says.

    In a nutshell, one would need to note what is connected to which connector on the MB and change the BIOS accordingly for this kind of setup to work.

    Chris
     
  3. RasmusP

    RasmusP
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    I just had a look again. I'm 99% that these 2 fans will rotate clockwise when watch from the perspective of that photo.
    Meaning that the suck air from inside the case through the radiator and push it to the outside.
    Similar to what my chart looks like when the watercooling is in the top.

    Doesn't really matter as I'd say that it's better this way than suckling air from outside of the case into the case. But I thought it would be good to check!

    To the connectors: interesting bios settings! I agree, always make all fans cpu dependant. The gpu can handle itself.

    One thing I noticed with my old asrock p67 pro3 (2011) is that speed Fan (little old program to control fans) can only control my fans when the bios is fixed at a certain level instead of some kind of automation.
    Might be worth a try to just put all fans, kraken etc to "level 5" or something and test if the kraken software can control them then from within windows :)
     
  4. Authense

    Authense
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    Hi Rasmus, look at this pic of some other guys installation I just found:

    upload_2018-7-4_16-46-15.png

    This is a representation of the default installation from the manual. This label side where it says "NZXT" is pointed inside in order to suck the hot air out of the cooler into the case? Because this way it cannot suck cold air from outside the case and through the cooler, or can it?

    I will double check the arrow on the side of the fan. Thanks for the reminder. Temps are great so I might keep it this way.

    Chris
     
    Last edited: Jul 4, 2018
  5. Poloman

    Poloman

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    Thanks for looking into my problem.
    I was away,and managed to test a few things before reading your post.

    ASW shouldnt make a difference really,and my issue was there,with it off everything was working WRONG,turning it on,i do get proper 90 fps,which is weird.
    Still,with it on,my gpu was sitting low (40% usage) and i was still getting frame drops after a while.
    I think that at somepoint it was idling and was dropping its clock,but gpu-z didnt show anything.

    Thought,the way i fixed it,was shifting almost all setting up a couple of ticks,now running with pretty much everything on max :p,with my gpu still not running at 100% (im running at around 70%),which gives some headroom when there are many cars around.


    PS.Also pit-screen is broken,it is way too heavy for some reason.
     
  6. Andrew_WOT

    Andrew_WOT

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    My system was CPU bound, 1080Ti with i7-5930K 3.5GHz 6-Core Processor OCed to 4.4GHz.
    And I got quite massive boost for VR by disabling Hyper Threading.

    Can push SS to 250% now. This is with Odyssey.
     
    Last edited: Jul 29, 2018
  7. Authense

    Authense
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    Yep, tried this today, I have no performance reduction with this setting but also no FPS increase detected either.
     
  8. RasmusP

    RasmusP
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    For me hyperthreading never reduced the fps Always increased them in all games no matter if they are single threaded or extremely multi threaded.
    Some times HT gives extreme amounts of micro stuttering though! Battlefield 4 beta, Risen 2 are two examples I remember clearly.

    In assetto corsa, single screen at full HD, deactivating HT reduces the fps by around 20 percent for me. Might be different with more than 4 cores and VR though!
     
  9. Authense

    Authense
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    Yep, that is exactly what I found out in researching this topic. It does not help for desktop applications - they say - but in VR it is worth trying. I do not have the technical background but they say, that with the CPU being on the edge in VR it does not help the performance if it shuffles workload around between 4 real and 4 hyper cores. I also got wrong temp measures for the hyper cores all the time, which does not look nice but certainly is just a bug in certain hardware tools.
     
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  10. RasmusP

    RasmusP
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    You get temperatures for them? Interesting! All hardware monitoring I know of only show the 4 real cores. With which one do you see these temps?
     
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  11. Authense

    Authense
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    With the CAM utility that came with my Kraken water cooling hardware. It gave me i.e. 52-55 degrees for Core 1-4 and then i.e. 80 degrees for Core 7 or so.

    By the way I forgot to mention that my Unigine Valley score jumped quite a bit with hyper threading disabled and I could see my system hitting reference benchmark figures that I would have missed by some percent before. And that is a Desktop benchmark. I don't know why though.

    Also in CPU-Z when I run benchmark and click 4 cores with hyperthreading disabled I get to what is expected from my CPU around 103-105% but not with HT enabled.
     
  12. RasmusP

    RasmusP
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    Maybe it runs a lower turbo with HT on? Would be the only thing I could think of!
    I know I can go 100 MHz higher without HT but the performance is still worse then.
     
  13. Andrew_WOT

    Andrew_WOT

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    At first I thought I got some boost in 2D benchmark but it was due to removing Headlights Mod.
    In VR on the other hand the gain was indisputable. Could be specific CPU architecture related as well. But I was floored when I saw the jump in performance.
    This guy saw some gain in 2D as well, in GTA V, jump to 3:50
     
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