AnandTech Exclusive: CrossFire Benchmarks Revealed
by Derek Wilson on July 22, 2005 6:00 AM EST- Posted in
- GPUs
Final Words
So, what have we learned? CrossFire is a solid competitor to SLI at the high end. The hardware and drivers are far enough along to provide very good performance on quite a few titles. SuperTiling works using 32x32 blocks and doesn't seem to have any problems other than the odd glitch while changing modes. CrossFire AA modes don't work quite yet, but games will run and something near what should be there shows up.Gigabyte has stated that they not only have NVIDIA SLI working on their GA-K8AMVP Pro, but that dual 3D1 cards will work as well (with a modified BIOS and driver at the moment). We haven't had a chance yet to test this ourselves, but we will definitely have something up on the combination as soon as we can.
There are some downsides, however. While CrossFire often provides more performance than the 7800 GTX, we don't get the benefit of SM3.0, which is being used in more and more games. The added cost will either eat into your budget for a next generation card when they come along, or will usurp money that might be better spent on a monitor to handle very high resolutions. There are plenty of examples of CPU limited games at 1600x1200 using CrossFire (basically the same list as the 7800 GTX). As time goes on, it will be important to invest in a monitor or money spent on ultra high end graphics solutions will go to waste.
The bottom line is that CrossFire is a success in implementation. We are impressed with the performance of the solution, especially considering the very early hardware and software that we have our hands on here. When a final solution is released, we will be doing a much more in-depth performance and image quality analysis of the hardware, but at this point, we just want to get a solid idea about what to expect. And right now, we expect exciting things for ATI. To recap performance, we've put together a table showing improvement due to the addition of a second GPU under CrossFire and SLI.
| Multi GPU % Performance Improvement (16x12 noAA) | |||||
| Doom 3 | Everquest 2 | Half-Life 2 | Splinter Cell 3 | UT 2004 | |
| CrossFire | 42.9 | 2.3 | 11.1 | 82.3 | 5.7 |
| SLI | 34 | 1.4 | 22.2 | 88.8 | 4.4 |
| Multi GPU % Performance Improvement (16x12 4xAA) | |||
| Doom 3 | Half-Life 2 | Splinter Cell 3 | |
| CrossFire | 70.6 | 29.9 | 83.8 |
| SLI | 81.3 | 68.2 | 33.6 |
Clearly, even in it's early stages, CrossFire can bring some good competition to SLI.
If ATI can get their chipset out there alongside CrossFire master cards, we could see some good adoption. Their new chipsets are no slouches (well, maybe the southbridge is a little lacking). What is very clear is that ATI needs to get a solution out as soon as possible. Time isn't standing still for ATI while the 7800 GTX is out with zero competition in a single slot.
Once again, we would very much like to thank Gigabyte for providing us with the hardware necessary to run these tests. We were very happy with the performance of their hardware, and will have a more in-depth look at the motherboard as soon as possible.
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BroadbandGamer - Friday, July 22, 2005 - link
"#23, I think you may be the only person out there who uses an LCD for gaming without scaling the resolution up to native."I never scale a lower res. I'd rather play the game with black bars around it then look at a nasty scaled image. So the guy is not alone, there's lots of us who don't like scaling lower resolutions to fit the native resolution of the screen.
DerekWilson - Friday, July 22, 2005 - link
#39, You make a good point about people reading the article. But it is important to make it clear that spending more than $900 on graphics hardware may not be worth it unless the user wants to run 1600x1200 or higher.-----
We've updated the article to include percent increase tables on the last page. CrossFire ends up being pretty competitive with SLI in terms of % increase.
johnsonx - Friday, July 22, 2005 - link
do we have any information yet that says an ATI Crossfire setup will or will not work in an NForce4-SLI board?saiku - Friday, July 22, 2005 - link
Just so most people without bazillion dollars to spend on these systems get a clue, how about posting 6800 GT, 9800 Pro, 6600 GT numbers. Maybe then we could decide to sell the house and buy the XFire solutions.
Why the moaning about not running above 1600x1200? What percentage of people reading this article will be running it above those settings , I wonder?
bob661 - Monday, July 25, 2005 - link
There's probably quite a few people here running it above those resolutions. Remember, this is a geek site. :)
blackarc - Friday, July 22, 2005 - link
#37 - ROTFLMFAO!!!!!*sigh*
I love my dual 19" LCDs
yacoub - Friday, July 22, 2005 - link
Wow, where to begin with this one...=====#23 no serious gamer would play in a window,====
OH NOES IM NOT A SERIOUS GAMER NOW. :'(
====and how can you not see the drawback of shrinking the screen size to get a lower resolution?=====
I'm not shrinking anything, I'm putting it at its natural size. And again, I only do it to run certain games smoothly on my aging system. I see no drawback to running a 1024x768 window'd game on my desktop for games like UT2k4. Sorry, I just prefer that. I also like to be able to Alt-Tab without all the drama (time wasted) reloading of the screen that happens when you run a game in full-screen mode anyway. I'm different that way I guess. OH NOES, DIFFERENCES R BAD!
======Why turn a 19" display into a 14" display?====
Except I'm not? I have a 17" display and I'm using it all, I just put some games in a window on the desktop - you know, like you do with many other pieces of software that you don't want to take up your entire view, or in the case of some games that run better at a lower res on my system.
=======I'm sorry but my 21" crt can do any resolution and still use all of the screen space and not interpolate.====
And mine can do any resolution up to its maximum just fine as well and in a manner I am happy with that does not "interpolate" or distort. Thanks for playing. M
y system's not spec'd enough to run 1280x1024 in the latest games. Since I'm GOING TO BE PLAYING IN 1024x NO MATTER WHAT, why not do it in the most efficient manner where I can also keep an eye on other tasks? And so that's what I do. :)
======LCDs can't period and that's a big deal for 99% of gamers.======
Most gamers have machines that can run the native res of 17" or 19" LCDs. I don't anymore since some games are too much for my system. I was simply answering the faux complaint about, "OMG IT STRETCHES TEH GAMES IN NONNATIVE RES" because it certainly doesn't on mine nor on most modern LCDs that have more than simply "stretch image" as a way to display lower resolutions! *gasp* Imagine that! Technology changes and improves! Ignorance must be bliss though.
ann111 - Friday, July 22, 2005 - link
My desk just looks a hell of a lot nicer with a dell 2005fpw and hyundai l90d+, which together take up less space than my old sony 21" crt.DerekWilson - Friday, July 22, 2005 - link
#23, I think you may be the only person out there who uses an LCD for gaming without scaling the resolution up to native.#28, we used an XT / XT combo for SLI, and the Far Cry benchmarks are not a typo. Nor are the XT PE labels. Sorry for the confusion, but it had been a while since I had run Far Cry numbers and the game favored CrossFire enough to make it worth a few quick tests on a couple other cards.
#30, at this point no, we can't test on other chipsets. This product is still in developement and has a hard enough time getting enabled on all ATI hardware.
Thanks,
Derek Wilson
Sunbird - Friday, July 22, 2005 - link
#8, your wrong, CRT's are the win!The only reason I like LCD's is cause they have made big CRT's so cheap!!