2900Pro Crossfire x32 vs x64 drivers

Any idea of the performance difference between the two at this point?
Would it be worth the headache of finding drivers for my stuff in X64?
I've only got 2x1GB ram coming with my new build. If the performance is better i'll order up another 2GB.

I ordered two 2900Pro's because i'm going to put them in overdrive and crank it up. 3870 for 100$ more per card wasn't worth getting. My case has a 360mm side fan and a 250mm front fan, so cooling will be adequate.

My question:
Crossfire drivers: x32 or x64? (looking for overall FPS, not awesome FPS in any one game)
13 answers Last reply
More about 2900pro crossfire drivers
  1. umm hope you have a good Power supply cusz the 2900 series chews INSANE juice. you were better off getting 2 3850 with 512 megs of ram then 2 2900s.......of course 2 3870 r better and 2 8800 gt or higher r better to. But the 2900 series consumes way way too much power.

    Plus 3850 = 2900 Pro.
  2. Was cheaper, have a 800w (ABS Tagan ITZ800-Rev2)PSU with 20A on all rails, comes with 8pins, 2900XT X-Fire was <90FPS overall than 3870 X-Fire.

    I plan and expect to overclock the 2900Pros past XT speeds. Seen a 2900 with increased voltage hit 1000/2000 without crashing.

    $150 on newegg.
    3870 = $250 everywhere.
    _____________________+
    == Saved $200 for equal performance. Even if the 3870's oc decently.

    3850 = not worth it compared to 2900Pro @ 512MB
    Still does not answer OP

    EDIT: Bought an X38 board, so no SLI for me.
    Would have considered 2x8800GT otherwise.
  3. I dont think you can really see any improved performance with a x64 vs x32. The main advantage of a x64 os is that it allows more memory to be addressed. If you are only using xp, i would say that going x64 wouldnt be needed, unless you do video editing and you are looking to go over 3gigs. if you are going to use vista, then it might be ok, considering that vista eats ram. And yes, the drivers are not up to par with x32 os's, because the vast majority uses x32. So to sum,
    XP, less than 3gigs of ram-go with x32
    Vista, patience- Then try vista x64
  4. Thanks for your reply.

    I was just curious as to whether there would be any difference in performance, but that about sums it up.
    What I think I may do is use dualboot XP Pro/Linux and slipstream XP for gaming and use Linux for internet.

    Does anyone think gaming would be worth getting an extra 2x1GB set for improved performance?
    Or does it at this point of my config seem not worth it? I mean, it's only an extra 35$ or so for me to get the extra memory - opinions?
  5. 32 bit OS, use 32 bit drivers.
    64 bit OS, use 64 bit drivers.
    Pretty straight foward.
    You can get more memory if you want, it's certainly cheap enough right now. In 32 bit XP though, you aren't going to notice much if any difference at all with more than 2 gig. But, for the price, why not?
    You never know, the price may go up 500% in a week or two.
  6. Get the extra ram. Todays games are starting to use the extra ram and tomorrows games most certainly will. I play quite a bit of LOTRO and i noticed my hard drive going crazy as the game continuously accessed it. I added two extra gigs for a total of four and now the game is much smoother with not nearly the amount of hard drive activity.I use Vista x32, HD2900XT, Athlon64x2 4400+ OC'd to 2.6gh, 2 WD Raptors 75 gig and 150 gig.
  7. I know which drivers to use jit. The point was me deciding which drivers to use based on performance of one over the other.

    I think I might just stick to XP Pro x32, get the extra 2GB not even caring if it recognizes the whole 4GB or not (apparently it still makes use of it somehow), and gut XP Pro so i can dualboot linux for internet/downloads.

    (Just bought the second batch of ram. Will consider X64 use in the next few days)
  8. Mendoza said:
    umm hope you have a good Power supply cusz the 2900 series chews INSANE juice. you were better off getting 2 3850 with 512 megs of ram then 2 2900s.......of course 2 3870 r better and 2 8800 gt or higher r better to. But the 2900 series consumes way way too much power.

    Plus 3850 = 2900 Pro.


    Thats just plain wrong/misleading, 3850 = 2900 pro yes at standard pro clocks, but the pro can be clocked up to and beyond 800 mhz, has the full 512bit bus and 512mb frame buffer and the cooler even at 33% fan speed is really very very good. The beauty of the pro - if you can live with the power consumption lol - is that in hardware its very nearly an xt at a much lower price. Personally I do think its speed binned, the price for one screams speed binned and the extra heat pipe on the cooler suggests something is a little amiss also. The memory is also not the same, being 1.1ns chips versus 1.0ns on the xt. Im not putting this across very clearly lol but the pro can clock much much higher than its stock speeds. An overclocked 3850 will be faster but will also be stuck with just 256mb. Not to mention 512mb versions are not at all easy to source in the u.k. Maybe things have improved, but when I was looking for an upgrade 2 weeks before christmas 3870s and 512mb 3850s were next to non-existent. Especially the better packages with decent software and games bundled.

    i have a pro by the way, bought of ebay, as of a week ago, and at 1400x900 (monitors max resolution) no game I play even bothers it except of course crysis. (these games are, with max settings, resolution and 2x aa: battlefield 2 & 2142, STALKER, Supreme Commander, Quake Wars and the occasional bit of Oblivion).

    Crysis at 1152x864 I get 35-40 fps average (given that most of the game im running around dense jungle shooting, my minimum is not much lower than that, above 25fps put it that way) with all high except shadows, particles, effects and post processing on medium (no xp hack) with a core 2 duo e6300 @2.6ghz on windows XP using catalyst 7.12. Yes thats right dx9 card owners, high shader and 40fps. (its the most common value fraps gives while playing)

    Moving to 1400x900 reduces my average fps by what appears to be exactly 10fps. But then again overclocking would remedy that pronto, although the slight change in proportions (everything is slightly taller and narrower which looks a bit odd) will stay the same :(

    On the same system @1152x864 my old 7900gt overclocked to 700mhz core and 850mhz memory gave me a shuddery and unenjoyable 20-30fps (30 fps when looking at the ground lol ) with all on medium, water and physics on high. That was with the latest driver as of last week. Havent tried the patch yet with either card.

    Im soooo chuffed if you havent worked that out already lol cos my newly installed pro at stock speeds doesnt just beat but destroys my enormously overclocked 7900. And thats why im all "the pro is amazing blah blah blah" lol. If you can pick one or two up cheap then with overclocking you really are laughing. On a side note, I havent tried overclocking quite yet, it only just fit into my case and the psu gets quite warm (Tagan 550w), which it never did with my 7900gt.

    Cheers

    #End of mindless rant#
  9. korsen said:
    Was cheaper, have a 800w (ABS Tagan ITZ800-Rev2)PSU with 20A on all rails, comes with 8pins, 2900XT X-Fire was <90FPS overall than 3870 X-Fire.

    I plan and expect to overclock the 2900Pros past XT speeds. Seen a 2900 with increased voltage hit 1000/2000 without crashing.

    $150 on newegg.
    3870 = $250 everywhere.
    _____________________+
    == Saved $200 for equal performance. Even if the 3870's oc decently.

    3850 = not worth it compared to 2900Pro @ 512MB
    Still does not answer OP

    EDIT: Bought an X38 board, so no SLI for me.
    Would have considered 2x8800GT otherwise.


    Was that on the extremesystems forum? Adding an extra notch voltage to the core makes 900mhz+ more than possible apparently.
  10. I forget where it was, but it was on another forum. And i've been really lucky with overclocking. I'm sure you read my case has a 360mm/250mm side/front fan and a 120mm exhaust. So cooling isn't an issue, even though it's (annoyingly) double slot.

    All i have room for is my X-Fi! :cry:
  11. Spoonboy,
    get your RivaTuner moving and OC that PRO !!lol.curious to hear what you can get it to.
  12. Phin said:
    Spoonboy,
    get your RivaTuner moving and OC that PRO !!lol.curious to hear what you can get it to.


    Sorry only had an evening to play with it (2900pro arrived, swapped out trusty 7900gt, put the pro in, fired up fraps and all my games lol) then had to leave it for 2 months. Im studying abroad and wont be home till maybe end of february. I WILL be overclocking though lol, first move will be to get the gpu and memory up to the same speed as my 7900 was - 700mhz core, 850mhz memory - and do an apples to apples 3dmark06, crysis, STALKER, Medieval 2 total war (battle of agincourt initial overview of your troops after intro movie is over - currently 25fps versus 19fps on the 7900. Sounds unimpressive but my old old 7600gt made 17fps here lol) and Supreme Commander test. Battlefield 2 is just laughable as Ive gone from something like 70fps to between 95-100 fps. Yes thats right, my monitor has a low max res lol. Will post all results when they come through as Im dead chuffed with the card and want to share my delight with the world lol.

    Cheers.
  13. i'll be overclocking the following:

    Q6600 @ 3.6
    Abit IX38 @ 2000
    DDR2-800 @ 1000
    2x2900Pro @ 850/900

    I'll put up screens and benchies when i'm all said and done.
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