HD 4870 vs Crossfire HD 3870's

Discussion in 'Video Cards and Graphics' started by bizzyd1441, Aug 6, 2008.

  1. bizzyd1441

    bizzyd1441 Member

    Joined:
    Apr 6, 2008
    Messages:
    59
    Likes Received:
    0
    I've been eying the HD 3870 for a few months now, and have recently discovered the awesomeness of the 4870. And after looking at prices, it seems like I could get two 3870's in crossfire mode and it would be slightly less expensive than buying one 4870.

    Now I'm not sure if there are any big disadvantages to using two cards in crossfire mode compared to using a single better card. But the two 3870's would have a combined ram of 1gb and a memory rate of 512mb.

    There's also the fact that the 4870 has 800 stream processors compared to the 3870's 320. I'm not sure if that is more important than having more memory or not.

    I'm kinda leaning towards the HD 4870, but I just wanted to be sure. And I suppose the 4850 is always another option, but GDDR3 seems like a big disadvantage.
     
  2. Loading...

    Similar Threads - Crossfire 3870's Forum Date
    Confused about SLI/Crossfire specifications Video Cards and Graphics Friday at 8:29 AM
    SLI / CrossFire connectors Video Cards and Graphics Jan 21, 2017
    Quick Question about playable resolution with crossfired HD7870 Myst cards Video Cards and Graphics Dec 31, 2016
    Geforce GTX 1070 vs 2x Radeon RX 480 CrossFire (PCLab) Video Cards and Graphics Jul 8, 2016
    Is it possible to have 3 3870's in Crossfire X? Video Cards and Graphics Apr 4, 2008

  3. thilanliyan

    thilanliyan Diamond Member

    Joined:
    Jun 21, 2005
    Messages:
    9,055
    Likes Received:
    29
    I'd go with the single 4870. It's already very fast and you don't have to deal with any Crossfire scaling issues. Also, you won't actually have 1gb of video ram with the 3870s...you'll only have 512mb and the GPUs can't share the memory.
     
  4. Atreus21

    Atreus21 Diamond Member

    Joined:
    Aug 21, 2007
    Messages:
    9,359
    Likes Received:
    49
    I have dual 3870's and I'm pretty sure a single 4870 is better.

    I'd go with the 4870. Looking at the benchmarks, the 4870 blows the 3870X2 away, and the X2 was supposed to be better than two 3870s.
     
  5. BTRY B 529th FA BN

    Joined:
    Nov 26, 2005
    Messages:
    14,225
    Likes Received:
    5
  6. Ike0069

    Ike0069 Diamond Member

    Joined:
    Apr 28, 2003
    Messages:
    4,276
    Likes Received:
    0
    4870 without question.
     
  7. imported_JPB

    imported_JPB Diamond Member

    Joined:
    Jul 4, 2005
    Messages:
    3,777
    Likes Received:
    0
    The 4870 outruns the 3870X2. So yea...I believe the 4870 would outrun Crossfired 3870's as well.
     
  8. christopherzombie

    christopherzombie Senior member

    Joined:
    Jan 18, 2005
    Messages:
    431
    Likes Received:
    0
    I have 3x 3870's and I'd still rather have 1 4870!

    BTW

    Vantage: P10050
    ...with system listed below, if you care about benchin'
     
  9. apoppin

    apoppin Lifer

    Joined:
    Mar 9, 2000
    Messages:
    34,902
    Likes Received:
    0
    i can share my experience which is parallel to yours

    i have 2900xt crossfire [2900xt/2900pro@xt; close enough] and HD4870. 2900xt crossfire would not be very much slower than 3870x2.

    The 4870 is superior ... especially when you crank up the filtering; however my 2900xt crossfire is only about 10-15% slower in raw FPS. To see Crysis without stuttering is worth going for 4870
     
  10. Wreckage

    Wreckage Banned

    Joined:
    Jul 1, 2005
    Messages:
    5,529
    Likes Received:
    0
    ^ What he said.