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GTX285 vs 5870 vs 5870+5850

Discussion in 'Graphics Cards' started by wolf, Feb 28, 2010.

  1. wolf

    wolf Performance Enthusiast

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    So as the title says I've managed to run a few crysis warhead and vantage benchmark runs to compare these 3 setups.

    the GTX285 was tested in a different system to the 58xx's however the two are exceptionally close, so I feel the results are quite appropriate.

    system 1;

    i7 920 @ 4ghz
    X58-UD5
    6gb 1600mhz
    GTX285 @ 693 core - 1578 shaders - 1290 memory, 196.34

    system 2;

    i7 920 @ 4.2ghz
    P6T Deluxe V2
    6gb 1600mhz
    5870 @ 950 core - 1250 memory, 10.3 preview
    5870+5850 @ 950 core - 1250 memory, 10.3 preview

    [​IMG]

    [​IMG]

    DirectX 10 GAMER 3X @ Map: ambush @ 0 1920 x 1080 AA 0x

    5870 is on average 32 % faster than the GTX285

    CFX is on average 85% faster than the GTX285

    CFX is on average 40% faster than a single 5870

    [​IMG]

    [​IMG]

    [​IMG]

    DirectX 10 ENTHUSIAST 3X @ Map: ambush @ 0 1920 x 1080 AA 4x

    5870 is on average 49% faster than the GTX285

    CFX is on average 249% faster than the GTX285

    CFX is on average 69% faster than a single 5870

    [​IMG]

    TEMPS

    both setups were tested in the same room, adjacent to each other, at the same time.

    At 100% fan forced in EVGA precision the GTX285 rose to 83 degrees.

    With a boosted fan curve the hottest any 58xx card became during testing was 63 degrees which was at 48% fan speed.

    ---------------------------------------------------

    So in short yes the 58xx cards on on a *slightly* faster system, this gives an excellent idea how the cards perform at a range of settings, and how the lead grows the harder the task.
  2. shevanel

    shevanel New Member

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    murders dx9
  3. saikamaldoss

    saikamaldoss New Member

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    then i will buy a 5850 + my current 5770.. wonder how it would scale up :)
  4. t77snapshot

    t77snapshot

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    I think I will stick with my 285, it's good enough for now;) but those are great numbers on the 5870.
    Crunching for Team TPU
  5. phanbuey

    phanbuey

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    dont waste your money... a 5770 doesnt do cf with 5850.
  6. Hayder_Master

    Hayder_Master

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    +1, you can crossfire only from same series, like 58xx or 57xx
  7. {JNT}Raptor

    {JNT}Raptor New Member

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    I run my XFX GTX285 at 720/1620/1350 with no higher than 70% fan speed and never see anything past 70c's.....methinks you need to clean that cooler on the 285.

    Thanks for the benches though. :)
  8. nt300

    nt300

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  9. Wile E

    Wile E Power User

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    Need to redo the test with the 5870+5850 system at 4Ghz. I know the results would be similar, but using 2 different cpu speeds gives people a flaw to focus on.
  10. wolf

    wolf Performance Enthusiast

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    yeah that's what I was thinking, although minimal it *might* make a slight difference, just enough for some to potentially call the entire testing unfair.

    @ {JNT}Raptor - I too thought the temps seemed high .... it is my mates pc and he rarely dusts it, so I'd also assume that will account for the weirdly high temps, given the boxes were side by side in the same room.
  11. TylerZambori New Member

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    I've got a question: Ok, the Nvidia GTX 285 only has 240 processor cores,
    the core clock is 648MHz. The effective memory clock is 2484MHz.

    The HD 5870, OTOH, has 1600 "stream processing units," the core clock
    is 850MHz, and the effective memory clock is 4800MHz.

    So how is it then, that the GTX 285 even comes that close in speed to
    an HD 5870?

    I'm not bashing ATI; I just bought a 5850. I'm just wondering about
    this....with so many more "stream processors," and practically double
    the effective memory clock, how is it that it comes so close in speed?
  12. shevanel

    shevanel New Member

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    1 Nvidia GT200 shader = 2.3484 ATI rv770xt shaders from what ive read online... dont know how the math works on the 5000 series.

    ive heard someone say that it takes 3x as much ati shaders as nv shaders at same clocks to be equivilent although i probbaly just fucked that all up cuz i dont know myself im just repeating inet gossip
  13. phanbuey

    phanbuey

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    It depends....

    1 nv shader is usually clocked at around 1400-1600mhz, one ATi shader is clocked at GPU clocks, 700-850Mhz...



    1 nv shader roughly equals one ATi cluster in a worst-case scenario...the RV770 had 160 clusters each cluster has one master shaders and 4 gimpy shaders. Worst case is when only the master shader can perform. This is bad since usually nv shaders are clocked twice as high, so massive loss for ATi here. You basically have ~80 shaders to NV's 240. This rarely happens, usually due to *extremely* bad driver support in a game.

    With the higher clocked (or overclocked) shaders in the 5 series, this is different since the speed of the shaders isnt half, closer to 850-1000Mhz vs 1400-1600Mhz and there are twice as many. So if clockspeed was not taken into account, Ati would have 320 shaders, and NV 240... but because Nv's have a higher clock, they can *sometimes* touch the ATi card's performance. Again, worst case scenario.



    However, in the best-case scenario, the ATi card will just obliterate the nv since in the best case 1ATi = 1NV at the same clockspeeds and 2ATi = 1Nv at actual clockspeeds.

    In the best case, a 4870/4890 has *about* ~400 comparative(clockspeed adjusted) shaders to the gt200's 240. This happens VERY rarely, but its part of the reason you see ATi cards with outrageous theoretical compute numbers i.e. a 1.2 tflop 4890 is about the speed of a 650-700 gflop gtx275 in real world. If ATi cards were to employ all of their shaders, including the gimpy ones, their combined compute power is pretty amazing. The chance of this happening in a real-world scenario, however, is a bit like the planets lining up in a perfect row behind a blue moon.

    So in actuality the 3 to 1 figure averages out pretty close to what happens, even though its not nearly that cut and dry.

    One other thing to consider: There are other performance factors that determine the gaming experience, so shader power isn't everything, not by a long shot. Which is why doubling the shaders on the 5 series + increasing clocks didn't double the speed from rv770.
    Last edited: Mar 4, 2010
    TylerZambori, wolf and shevanel say thanks.
  14. saikamaldoss

    saikamaldoss New Member

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    oh sorry ya u r right :)

    any way 5770 will be a good give away to my cuz. i got it as a replacement for my 4850 lol :)
  15. Altered

    Altered

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    +1 or nay sayers will go crazy over it. :laugh:
  16. phanbuey

    phanbuey

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    WOOOOOLFFFF....

    hey man would you recommend upgrading to a 5870 from sli 260's?
  17. Blacklash New Member

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