Multi-GPU Performance

Crysis

NVIDIA's own multi-GPU solution outperformed the GeForce GTX 280 when it launched, so it is not too surprising to see the Radeon HD 4870 in CrossFire mode doing the same. If AMD can put two of these things on a single card it will have a viable competitor for the GTX 280 as well as the GX2.


Click to Enlarge 

Call of Duty 4

AMD's architecture did very well under Call of Duty 4 in the single-card tests, with a single Radeon HD 4870 performing better than a GeForce GTX 260. The scaling from one to two cards is beyond perfect in CoD4, the reason being that we test on two different platforms (Intel X48 for CrossFire, NVIDIA 790i for all single-cards), the end result is a rare case where two of AMD's $300 cards actually outperform two of NVIDIA's $650 cards. By no means is it the norm, but it is a testament to the strength of AMD's RV770 GPU.


Click to Enlarge

Enemy Territory: Quake Wars

CrossFire continues to scale poorly in Quake Wars, while NVIDIA's GeForce GTX 280 SLI completely dominates the charts here. The 4870 CF performance isn't terrible, it's actually in line with where it should be (2 x $300 cards are about as fast as 1 x $650 card).


Click to Enlarge

Oblivion Multi-GPU Performance in Assassin's Creed, Oblivion, The Witcher & Bioshock
POST A COMMENT

213 Comments

View All Comments

  • Final Destination II - Wednesday, June 25, 2008 - link

    Try ASUS, 7°C cooler. Reply
  • Justin Case - Wednesday, June 25, 2008 - link

    I thought it was only Johan, and it was sort of understandable since he's not a native English speaker, but it seems most Anandtech writers don't know the difference between "its" and "it's".

    "It's" means "it is" or "it has" (just as "he's" or "she's"). When you're talking about something that belongs to something else, you use "its" (or "his" / "her").

    In a sentence such as "RV770 in all it's [sic] glory.", you're clearly not saying "in all it is glory" or "in all it has glory"; you sare saying "in all the glory that belongs to it". So you should use "its", not "it's".

    Even if you can't understand the difference (which seems pretty straightforward, but for some reason confuses some people), modern grammar checkers will pick this up 9 times out of 10.
    Reply
  • CyberHawk - Thursday, June 26, 2008 - link

    I am not a native English speaker, but I am well aware of the difference. I am also sure that reviewers are also ... it's just that - with all this text, we can forgive them, can't we?

    I have a bachelor of computer science, studying for higher degree, but: I look at the technical side of the article, so I don't even notice the errors :D (although I can tell the difference I simply don't see it while reading)
    Reply
  • CyberHawk - Thursday, June 26, 2008 - link

    Oh, I forgot: maybe I'm just being too enthusiastic ;) Reply
  • JarredWalton - Wednesday, June 25, 2008 - link

    More likely is that with a 10000 word article and four lengthy GPU reviews in two weeks, errors slipped into the text. I know at one point I noticed Derek says "their" instead of "there" as well, and I can assure you that he knows the difference. I know I use Word's grammar checker, but I'm not sure Derek even uses Word sometimes. :) Reply
  • araczynski - Wednesday, June 25, 2008 - link

    of the 4850's, slickdeals has posted a sale, between rebate and coupon off...$150 each. can't beat that bang/$ by anything from nvidia.

    first ati cards that will ever be in my computers since i've started with the voodoo/riva tnt :)
    Reply
  • Denithor - Wednesday, June 25, 2008 - link

    Page 15: first reference to "GTX 280" should be "GTX 260" instead.

    Page 19: I think you meant "type" not "time" in this paragraph.
    Reply
  • natty1 - Wednesday, June 25, 2008 - link

    This review is flawed. It shows greater than 100% scaling for Crossfire 4870 in Call of Duty 4. Why don't they just give us the raw numbers for both single and dual cards in the same scenario? Why use a method that will artificially inflate the Crossfire results? Reply
  • Denithor - Wednesday, June 25, 2008 - link

    If you read the comments before yours, you'd see the answer.

    Experimental error and/or improved scaling for each card versus a single card. Read the earlier comment for more details.
    Reply
  • natty1 - Thursday, June 26, 2008 - link

    There's no good reason to pull that garbage. People assume they are seeing raw numbers when they read these reviews. Reply

Log in

Don't have an account? Sign up now