Massive FPS gains in rf2 using PCI-e 3.0 x16 with higher end cards!

Discussion in 'General Discussion' started by DrR1pper, Sep 30, 2014.

  1. Spinelli

    Spinelli Banned

    Joined:
    Jan 28, 2012
    Messages:
    5,290
    Likes Received:
    30
    No, his cards will be in PCI-E 2.0 8x/8x mode then. He only has 16 lanes, doesn't matter if it's 3.0 or 2.0.

    Enabling PCI-E 2.0 on my 4930k doesn't turn my 16x/16x 3.0 setup into 32x/32x, it's still 16x/16x, just in 2.0 mode.

    There are only 16 lanes (or 40 for some others) it doesn't matter if those lanes are running in 1.0, 2.0, 3.0 or whatever mode, the amount of lanes still totals 16 (or 40 in some people's cases).
     
    Last edited by a moderator: Oct 13, 2014
  2. DrR1pper

    DrR1pper Registered

    Joined:
    Apr 29, 2012
    Messages:
    3,286
    Likes Received:
    27
    Oh bugger. Are you 100% sure?
     
  3. Spinelli

    Spinelli Banned

    Joined:
    Jan 28, 2012
    Messages:
    5,290
    Likes Received:
    30
    Yes, DrR. There are only a certain amount of highway lanes (16 or 40) regardless of the maximum amount of cars that can drive through those lanes every minute (3.0, 2.0, 1.0).
     
    Last edited by a moderator: Oct 13, 2014
  4. DrR1pper

    DrR1pper Registered

    Joined:
    Apr 29, 2012
    Messages:
    3,286
    Likes Received:
    27
    balls. Then if that's true, we need 2 people, someone like SimonV6 who also have 2x 970's and get him to run his at pci-e 2.0 x16/x16 with same clock and mem speeds and compare results.
     
  5. Spinelli

    Spinelli Banned

    Joined:
    Jan 28, 2012
    Messages:
    5,290
    Likes Received:
    30
    We can still apply the test in single GPU mode like I explained in post # 199.

    We already know the huge benefits rF2 (mysteriously) shows in PCI-E 3.0 @ 16x compared to 2.0 @ 16x. Also, we already know that this same PCI-E mode advantage holds true in SLI mode. Therefore the single GPU test results of 3.0@8x VS 2.0@16x should almost certain carry over to SLI.
     
  6. DrR1pper

    DrR1pper Registered

    Joined:
    Apr 29, 2012
    Messages:
    3,286
    Likes Received:
    27
    SimonV6 and Prodigy, we need your help please to confirmed PCI-e 3.0 x8 = PCI-e 2.0 x16 performance in rfactor 2.

    If you have the time can you please run the live benchmark with the benchmark settings and set your gpu and memory clock speeds to 1300mhz and 1750mhz exactly when in load please. Afterburner is great for this as it has a live graph and built in program (kombuster) to make your card run at load.

    Here are the differences though for each of you.

    Prodigy, keep your cards in PCI-e 3.0 mode (which should be running in x8/x8 on your system automatically) and test with SLI enabled and disabled.

    SimonV6, you'll need to enter your bios and change your graphics card pci-e mode from "auto" (or "gen 3") to "gen 2". This will force your cards into PCI-e 2.0 x16/x16 mode. Then run the benchmark in both SLI enabled and disabled mode.

    And report back your scores please. Thank you in advance if you have the time to do this.
     
  7. DrR1pper

    DrR1pper Registered

    Joined:
    Apr 29, 2012
    Messages:
    3,286
    Likes Received:
    27
    Ah, think i see what you mean now. So even with SLI disabled, so long as he had 2 cards installed on the motherboard it will still force the single card into 3.0 x8 mode?
     
  8. Spinelli

    Spinelli Banned

    Joined:
    Jan 28, 2012
    Messages:
    5,290
    Likes Received:
    30
    Yup :) because that single GPU is still "stealing" 8 lanes by being plugged-in. He might not even have to remove the second GPU to test the first one in 2.0 16x mode; he may be able to just disable the second GPU's actual PCI-E slot from the BIOS.
     
  9. Ricknau

    Ricknau Registered

    Joined:
    Nov 12, 2011
    Messages:
    760
    Likes Received:
    31
    I swapped out my 2500k for a 3570k. Verified with GPU-Z that my single 780ti PCI-e runs at 3.0 x16. Ran a wide-screen "standard" test similar to Spinelli (5260x1050, multiview) except I used a BT-20 cause I don't have Hondas installed.

    CPU: i5-3570K @ 3.6GHz
    rFactor2 Build: 860
    Graphics driver version: 331.82 (need to update)
    780ti core 1125Mhz, mem 3500Mhz

    pci 2.0
    Avg: 66 - Min: 54 - Max: 78

    pci 3.0
    Avg: 76 - Min: 62 - Max: 90

    improvement:
    +15% -- +15% -- +15%

    Then I drove one lap manually, following 20AI with 25deg FOV to see how it would do in a more race-like condition. This included the standing start which is the toughest FPS test:

    pci 2.0
    Avg: 46 - Min: 29 - Max: 71

    pci 3.0
    Avg: 59 - Min: 46 - Max: 82

    improvement:
    +28% -- +50% -- +15%

    I'm pretty pleased with that and thank TechAde, Spinelli, DrR, and all the others who found and explored this technical glitch. For me, already having the proper mobo and vid card, it was a cheap exploitation just swapping my 2500 for a 3570.

    :)
     
  10. Spinelli

    Spinelli Banned

    Joined:
    Jan 28, 2012
    Messages:
    5,290
    Likes Received:
    30
    Ricknau, nice job :)
     
  11. DrR1pper

    DrR1pper Registered

    Joined:
    Apr 29, 2012
    Messages:
    3,286
    Likes Received:
    27
    Nice results there Ricknau. :)
     
  12. DurgeDriven

    DurgeDriven Banned

    Joined:
    Mar 20, 2012
    Messages:
    6,320
    Likes Received:
    42
    Should be sticky in Hardware this thread.

    Just as a headups for people upgrading, etc.

    I found same as Ricknau my 4690 running only 3.9GHz blows the doors off my 2500K@4.5Ghz in rFactor2.

    ......that's all I care about.
     
  13. Spinelli

    Spinelli Banned

    Joined:
    Jan 28, 2012
    Messages:
    5,290
    Likes Received:
    30
    What sort of tests? Online and many non-A.I. opponents? Offline and many opponents? No opponents?
     
  14. DurgeDriven

    DurgeDriven Banned

    Joined:
    Mar 20, 2012
    Messages:
    6,320
    Likes Received:
    42
    You mean me ?

    Online 8 cars was at least 20-25% improvement at 600MHz less.

    Offline and many opponents? No opponents? I have no interest in.
     
  15. Spinelli

    Spinelli Banned

    Joined:
    Jan 28, 2012
    Messages:
    5,290
    Likes Received:
    30
    Haha.

    Yes, online with real-life opponents is a much better test for CPU than offline.
     
  16. Ricknau

    Ricknau Registered

    Joined:
    Nov 12, 2011
    Messages:
    760
    Likes Received:
    31
    Not sure I understand how you're relating DD's online test to his results. Are you saying online offers more resistance to good FPS and that my 3570 should be better able to overcome, compared to my 2500? Or let me ask a different way... How should the offline gains I got with the 3570 pci3 vs 2500 pci2 compare to an online race with equal opponent count?
    Can you predict that?
     
  17. Spinelli

    Spinelli Banned

    Joined:
    Jan 28, 2012
    Messages:
    5,290
    Likes Received:
    30
    I am not talking at all about different PCI-E versions, or even the GPU at all. Durge just said something about his new CPU, and I asked if it was offline or online because I noticed when I set my CPU to 3.3 GHZ and then set it to 4.5 GHz I hardly had an fps improvements when offline, however, when I was online, especially with more real-life opponents, then there was a difference going from 3.3 GHz to 4.5 GHz. That's why I was curious if Durge's fps improvements were offline or online.

    EDIT: Ahhhh, I just realized that Durge's improvements were mostly because of his GPU now using PCI-E 3.0 @ 16x. The way he worded his post made me think that he was referring to the new CPU itself giving him more fps, lol. I can see why I confused you Ricknau, lol. My mistake.
     
  18. DrR1pper

    DrR1pper Registered

    Joined:
    Apr 29, 2012
    Messages:
    3,286
    Likes Received:
    27
    Hmm, i'm a little dubious of their being an fps gain with the clock speed increase when playing online Spinelli. I could be wrong but how did you compare before and after overclocks online and how similar were the test conditions, etc. You'd need exacting conditions to make it a fair test, very difficult/impossible to do online.
     
  19. Spinelli

    Spinelli Banned

    Joined:
    Jan 28, 2012
    Messages:
    5,290
    Likes Received:
    30
    It wasn't exact science I just noticed that when offline and alt-tabbing out of game my fps would hardly increase going from 3.3 GHz to 4.5 GHz. While online, I remember getting more gains from the increased clockspeed. I think the CPU get's used quite a bit more online. I know it's the same with quite a few other games as well, for example, Battlefield is a very good test for CPUs and CPU overclocks in multiplayer mode (especially with many opponents), offline though, it's all GPU.

    Maybe I'll do some tests later to see if my apparent results are valid.
     
    Last edited by a moderator: Nov 7, 2014
  20. DurgeDriven

    DurgeDriven Banned

    Joined:
    Mar 20, 2012
    Messages:
    6,320
    Likes Received:
    42
    Yeah mate I attribute most of the performance to the Pcie3.0 most def.

    However, the 4690 and chipset is just faster in everything like I said at 600MHz less in most things it runs identical or a little snappier.

    Like some things would be slower but I have not noticed anything yet.


    Even windows install picked up a minute my trueimages backups , restore and backup a tiny faster , desktop boot is faster ( and I dont use fast boot ie: I do not like efi or GPT partitions or mixing them with my other drives while hot swapping ) So I give fast boot a miss I am not that anal about speed.

    ;)
     

Share This Page