GTX580 + PCIE 2.0 x16 or PCIE 2.0 X8 + PhysX?

Discussion in 'Videocards - NVIDIA GeForce' started by Benny_26, Jan 1, 2011.

  1. Benny_26

    Benny_26 Banned

    Messages:
    204
    Likes Received:
    0
    GPU:
    Asus 970 Strix + SA850
    Hi guys,
    I have a question.

    I have a GTX580 and GT240 for PhysX.
    I noticed that when i used 2 video cards my PCI-E 2.0 speed goes down to x8.

    But from what i know is that PCIE 2.0 x8 is like the old x16 so its fast enough?

    Anyway, do you think its better to have GTX580 on PCIE 2.0 x16 and remove the PhysX card (not that many physx games out there anyway and none will be released in future)

    Or its better to have a Physx card even if it lowers the PCIE 2.0 speed to x8?

    Thanks
     
  2. teleguy

    teleguy Maha Guru

    Messages:
    1,359
    Likes Received:
    213
    GPU:
    GTX 1070/Vega 56
    A Gt 240 will probably hold back the 580 anyway regardless of bus speed.
     
  3. nightwalker342

    nightwalker342 Master Guru

    Messages:
    347
    Likes Received:
    2
    GPU:
    EVGA RTX 2080 XC
    What do you mean by that? There are alot of physX games now, and almost all of the newer games have it built in. All those nice explosions you see with stuff flying everywhere, and have the "The way it's meant to be played" logo on them, most are physX enabled. But like the other poster said, you'll be holding your other card back if you use both. The 400 and 500 series were built to be able to do graphics and PhysX at same time, no real need for a seperate card to do it. Hell, even with my GTX285 I tried using my old 8800Ultra as a phsics card, and noticed really no improvement, although my card temps went up a bit so I decided it wasn't worth the 1 or 2 FPS gain I got.
     
  4. Corbus

    Corbus Ancient Guru

    Messages:
    2,465
    Likes Received:
    72
    GPU:
    Moist 6900 XT
    meh... leave the gtx 580 alone:p it can handle physx games ...and if a game actually requires one for physx then you need a more powerful card than that gt 240
     

  5. MaxBlade

    MaxBlade Master Guru

    Messages:
    892
    Likes Received:
    11
    GPU:
    980Ti/970/390/+ more
    Yeah I agree. I've tried both and single and no diff in bench marks. As for 16x vs 8x again your not going to see any speed boost.
     
  6. Sarcastico

    Sarcastico Member

    Messages:
    22
    Likes Received:
    0
    GPU:
    Gigabyte GTX 670 SLI
    A bit off topic but what about a 580 with a 460 as a physx card?
     
  7. Benny_26

    Benny_26 Banned

    Messages:
    204
    Likes Received:
    0
    GPU:
    Asus 970 Strix + SA850
    Nah, the game have to actually support PhysX in settings.
    Currently these are the only ones:

    1. Batman: Arkham Asylum
    2. Crazy Machines 2
    3. Cryostasis: Sleep of Reason
    4. Dark Void
    5. Darkest of Days
    6. Metal Knight Zero Online
    7. Mirror's Edge
    8. Nurien
    9. Sacred 2
    10. Star Tales
    11. Tom Clancy's Ghost Recon Advanced Warfighter 2
    12. Unreal Tournament 3: Extreme Physics Mod
    13. U-WARS
    14. Mafia 2
    15. Warmonger: Operation Downtown Destruction
     
  8. J_J_B

    J_J_B Member Guru

    Messages:
    159
    Likes Received:
    0
    GPU:
    EVGA: 2xSLI 580HC, 480HC
    As others have stated, not necessary to have a dedicated PhysX card when you have a 580. I have a newly installed 580 SLI setup and I'm using the 480 I had for PhysX. I'm still getting to know the system and need to run more benchmarks, but I did run the new Metro 2033 benchmark available through Steam. With all settings maxed out, at 1920x1080, the usage of the 480 for PhysX was minimal. Perhapd 5% at most, but only for short periods. I'm pulling these numbers from memory so they aren't exact, but the point is that these cards are barely noticing the PhysX overhead.
     
  9. Benny_26

    Benny_26 Banned

    Messages:
    204
    Likes Received:
    0
    GPU:
    Asus 970 Strix + SA850
    Im going to test batman now and see.
     
  10. ---TK---

    ---TK--- Ancient Guru

    Messages:
    22,110
    Likes Received:
    2
    GPU:
    2x 980Ti Gaming 1430/7296
    that dinky 240 is going to have worse results than 580 with physics.
     

  11. Benny_26

    Benny_26 Banned

    Messages:
    204
    Likes Received:
    0
    GPU:
    Asus 970 Strix + SA850
    Batman AA, everything maxed out.

    GTX580+GT240 PhysX:
    Min = 41
    Max = 99
    Av = 77

    GTX580 only:
    Min = 42
    Max = 155
    Av = 88


    So in this case GTX doing both the graphics and physx wins, BUT what about some new game that can tax the GPU?
    Say Metro 2033, i heard that it can tax 580 easily, so adding additional card for Physx can actually help?!
     
  12. ---TK---

    ---TK--- Ancient Guru

    Messages:
    22,110
    Likes Received:
    2
    GPU:
    2x 980Ti Gaming 1430/7296
    I made extensive tests with a 295 and 9600gt for physics. a 295 can almost keep up with a 580 in low aa situations 4x and lower. a 9600gt is roughly a 240. the 295 won EVERY TIME. what you are looking for is a 450 or 260 as a physics card with a 580. the 240 might help you more if your primary card was a 260 or 275.
     
  13. Benny_26

    Benny_26 Banned

    Messages:
    204
    Likes Received:
    0
    GPU:
    Asus 970 Strix + SA850
    Actually i used this card with ATI 5850 until a week ago.
    And when i upgraded to 580 i kept it, no i will remove it and also free the PCIE to work at x16.

    maybe ill sell it and get a 260 for physx
    Maybe 260SE will be enough?

    P.S. Is there a build in Benchmark in Metro 2033?
     
  14. ---TK---

    ---TK--- Ancient Guru

    Messages:
    22,110
    Likes Received:
    2
    GPU:
    2x 980Ti Gaming 1430/7296
    Dunno. Google nvidia physics demo and see what u get. On my droid now so I can't link for ya
     
  15. civato

    civato Master Guru

    Messages:
    918
    Likes Received:
    0
    GPU:
    2xGTX570 sli on H2O EK
    Lose the physx card , With the new high-end GTX 4. and 5. series it is not needed.
    With my old GTX280's a dedicated physc card was a + , now with my GTX 570's it is just not needed.

    Yes , Look into the installation folder , if steam , Steamapps/common/metro 2033 = metro2033benchmark
     
    Last edited: Jan 2, 2011

  16. Benny_26

    Benny_26 Banned

    Messages:
    204
    Likes Received:
    0
    GPU:
    Asus 970 Strix + SA850
    well, apparently it can help for games like Metro 2033 and im sure in Stereo it will help even more

    580+GT240
    * Total Frames: 2848, Total Time: 59.84343 sec
    * Average Framerate: 47.69
    * Max. Framerate: 136.37 (Frame: 2258)
    * Min. Framerate: 16.91 (Frame: 2013)

    580
    * Total Frames: 2843, Total Time: 59.84286 sec
    * Average Framerate: 47.61
    * Max. Framerate: 179.89 (Frame: 2714)
    * Min. Framerate: 17.63 (Frame: 734)
     
  17. Benny_26

    Benny_26 Banned

    Messages:
    204
    Likes Received:
    0
    GPU:
    Asus 970 Strix + SA850
    well GT460 will do much better

    But sandy bridge will be even better upgrade, so i think ill just sell all my left over hardware and get a sandy bridge K-cpu, mobo and DDR3

    Im sure it will be even faster then my 6 core 4Ghz
     
  18. buddyfriendo

    buddyfriendo Ancient Guru

    Messages:
    3,409
    Likes Received:
    5
    GPU:
    2070 Super
    Wrong.
     
  19. Benny_26

    Benny_26 Banned

    Messages:
    204
    Likes Received:
    0
    GPU:
    Asus 970 Strix + SA850
    well look at my batman benches, its faster with 580 by itself

    But Metro 2033 is a different story, its same speed, but i assume that if i run it in stereo then even GT240 will help

    in stereo the GPU gores to 99% load
     
  20. HeavyHemi

    HeavyHemi Ancient Guru

    Messages:
    6,954
    Likes Received:
    959
    GPU:
    GTX1080Ti
    Right with using a 240. Wrong if using say a 450/460 class or higher GPU.
     

Share This Page