First Thoughts

And there you have it: the good, the bad, and the ugly when it comes to CrossFire performance on the P35 chipset with the HD 2900XT. There is nothing really revolutionary or surprising to us in the initial results after spending some significant time testing both products. We will say that the P35 launch should go smoothly when compared to the P965 launch last year if the first wave of motherboards is any indication of what is to come. Our ASUS P5K-Deluxe motherboard has been a joy to work with over the past few weeks and the retail unit has not changed our initial opinion of the board. While not perfect, it is definitely a step forward for ASUS in several areas when compared to the P965 family. Expect to see our first review on this board and others on Monday.

P35 may be good so far, but the same can't be said of R600. We fully expect to see performance and quality improvements over the coming weeks as the R600 drivers continue to mature and AMD pushes the performance envelope. How much actual applications like games will benefit is anyone's guess at this time but early results with the latest beta drivers show impressive gains in the 3DMark applications if that's important to you. However, what is not mentioned in most of these early results is continuing issues with CrossFire and OpenGL operation under Vista along with IQ issues in games, not to mention certain video decoding and playback functions not being up to full speed. Don't get us wrong, though: for as much grief as AMD has endured or deserved for this product launch we still like the card and expect to see more of it in upcoming product reviews. (Yes, some of us are eternal optimists that figure performance and quality will come up to speed and prices will drop.)

We are not here to single-handedly knock AMD for these issues as it has taken NVIDIA close to six months to get decent Vista drivers out for the 8800 series of cards and we are still waiting on new platform drivers. We could continue the listing of suppliers that have not stepped up to the plate yet in providing stable drivers or applications for Vista 64, even though everyone has known for the last three years that the industry would be progressing to 64-bit operating systems. At present, it's hard for us to determine what caused more problems in our testing: the new products that still need optimizations and tuning or an operating system that just does not seem quite finished yet.

It seems getting new hardware products to work together seamlessly is something that no longer is possible to do upon product launch. Maybe we propagate that problem by not being more direct in our conversations with the suppliers during the test phase of new products, but we do typically tell it like it is and those suppliers who listen take it to heart as you will see with the P35 products. It could also be that a few of the suppliers are fooled into believing their own marketing spins when providing engineering test results or products for those early previews that read like a bad infomercial. In the end, we need less hype, better products, and clear and concise information about the products' strengths and weaknesses on a timely basis.

Overall, our game testing indicates that driver optimizations will be paramount to improving CrossFire performance on the P35 chipset when utilizing Vista. Due to the x16/x4 limitations, the expected performance capability of the R600, and a whole new generation of games coming out over the next few months that promises to pound your current system into submission at the highest settings, we cannot recommend the P35 at this time for a CrossFire capable system. That honor still belongs to the chipset that refuses to die, the 975X which is slated to be replaced this summer with the new X38 chipset. While not always the fastest solution for an R600 CrossFire platform it does offer a level of consistency and stability that is not always present on the P35. We fully expect the P35 to perform significantly better in several areas once AMD has the time to tune their drivers for it. For now we understand and accept this lack of optimization, but that does not mean we like it.

Gaming Performance, Continued


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  • vailr - Thursday, May 17, 2007 - link

    miss an outing of lifetime with friends
    [outing of a lifetime]
    We are not here to single handily knock AMD

    System Platform Drivers Intel -
    [Version Beta:">
    Note: running the .exe installer may NOT update existing installed drivers. Must be manually updated for each device in Device Manager. See the readme.txt file:
    "INF files are copied to the hard disk [Program Files/Intel/INFInst folder] after running the Intel(R) Chipset Device Software executable with an '-A'
    flag (i.e., "INFINST_AUTOL.EXE -A"]
  • Paradox999 - Thursday, May 17, 2007 - link

    Wow, who would have thought ATI might have *immature* drivers for the x2900 at this point ? Duh. Moreover, why even try Crossfire when the cards in single configuration have been little more than a major league flop (don't bother spamming me, I'm an ATI fanboy). Given the poor performance (vs a much cheaper 8800GTS) and insane power requirements of a single card, you might be able to count on one hand the people eager to rush out to get a Crossfire setup. This kind of article is more in the category of 'curiosity' (like those guys that tried overclocking an x2900 with liquid nitro). Anand should be publishing more articles of a practical nature. If you want to try Crossfire and the least wait for a few driver revisions AND then a head-to-head against the 8800gts. That *might* provide more useful information, albeit, for a very small segment of the enthusiast market.

    I have to totally agree with some of the previous posters and say SLI and Crossfire is overkill and a waste of money. Buy the best card you can afford now. When it doesn't work for you any more replace it with the best NEW generation card you can buy.

    I'm still annoyed that the better motherboards (like my P5B Dlx Wi-Fi)come with 2 PCIE-16 slots. I use 1 x1900XTX and I'll replace it one day with one (1) much better card. The way I see it,ASUS robbed me of a PCI slot for my many expansion cards.
  • lopri - Thursday, May 17, 2007 - link


    I'm still annoyed that the better motherboards (like my P5B Dlx Wi-Fi)come with 2 PCIE-16 slots. I use 1 x1900XTX and I'll replace it one day with one (1) much better card. The way I see it,ASUS robbed me of a PCI slot for my many expansion cards.

    You must be joking, I assume? I think all PCI-E slots should be full length (x16) even though they are not electrically so. The only PCI card worth buying (for who needs one, that is) at this time would be X-Fi and that's just because of Creative's incompetency and monopoly in the market. I've ditched my X-Fi and refuse to buy Creative products until they get their act straight.
  • TA152H - Thursday, May 17, 2007 - link

    I ready stuff like this and I wonder what people are thinking. Why would Creative make such a mistake as you suggest?

    Let's see, every motherboard comes with PCI slots, and there are tons of motherboards that people use that don't have PCI-E slots. They are selling upgrade parts, and PCI-E does NOTHING for these parts that they can't get from PCI. It's not like if they were using PCI-E they would get better performance or it would work better in some way. So, naturally, they are making PCI cards. Duh.

    Maybe down the road when Intel stops supporting PCI, or when motherboards come out without PCI slots Creative will start making PCI-E, but until then, who needs them? They don't hurt in any way, not in performance, not in reliability. If they made them PCI-E so soon, they'd invest money in a product that currently makes no sense, and it would just jack up the costs.
  • lopri - Thursday, May 17, 2007 - link

    I somehow doubt that those 'tons of' folks with mobo without PCI-E wouldn't mind on-board sound. Heck. I have an SLI board and I rather make do with on-board sound than dealing with Creative garbage. X-F.. what? I also doubt X-Fi's target market is folks using 5 year old motherboards. Don't get me wrong. Their SB Live! is still decent and perfectly suited for older motherboards.

    And.. Mistake? Umm.. I wouldn't argue about PCI-E vs PCI here, but It's not exactly the case that Creative's PCI products and supports (which is non-existent, btw) are spectacular. They didn't even have a full driver download link until very recently. (They had no choice but to upload the drivers thanks to Vista)
  • TA152H - Friday, May 18, 2007 - link

    I'm not sure we're on the same page here. I thought you were implying that Creative needed to get their act together and get on the PCI-E bandwagon since that was what you were talking about. Apparently, you just don't like Creative and that was just kind of thrown in without respect to PCI-E.

    If so, I agree, they blow. Their software is horrible, and their hardware is overpriced. I don't know I'd go as far as to say that they are a monopoly; there are a lot of choices in the low end, but at the high end you can get a card from any maker you want - as long as it's Creative. I am really, really particular with respect to sound too, I have no tolerance for bad speakers or noisy computers because I listen to music on my computer, so it's extremely quiet. Unfortunately, I have to buy Creative and I have a love/hate feeling towards them. They do make the best stuff, but it's expensive, difficult and buggy. So, I know where you're coming from. Maybe NVIDIA should move into that market too. I think they'd eat up a half-rate company like Creative. How about AMD? Hell, if they're going to get into Fusion, why not do it right and put the sound processor there too? It's probably a matter of time. Sound is very important to gaming, and of course to watching TV and listening to music. Makes you wonder why more attention hasn't been placed on it, and substandard companies like Creative are given free reign.
  • PrinceGaz - Thursday, May 17, 2007 - link

    Although it was a nicely presented article on a product which is not exactly revolutionary, I must take issue with the game benchmarks which were included.

    Out of the seven games tested, only two of them had any results where the average was below 60fps; one where the lowest was 54fps and the other (which was the only one with meaningful framerates) being Supreme Commander where the P35 Crossfire configuration had driver issues.

    I know you might say that results of 80 vs 100 vs 120fps do still provide useful information regarding likely performance in future games, but the fact is that they don't as the demands made on the CPU, mobo, and graphics card of a much more demanding game running at 40fps tends to be quite different to that of a current game running at 120fps. I appreciate you must have spent an awful lot of time running them all (five times each for every setting, no less) but at the end of the day they didn't really provide any meaningful information other than that there are driver issues which need to be resolved (which is what we would expect).

    By the way, since you already went to the trouble of running every test five times, and discarded the two highest and lowest results to prevent them from unduly affecting an average; wouldn't it be a good idea to run the tests a sixth time so that the score you used is based on the average of two results rather than just the one in the middle? I imagine the 2nd-3rd-4th places were pretty close anyway (hopefully almost identical, with 1st place being very similar, and only 5th place somewhat slower because it was the first run), but for the sake of an extra 20% testing time a sixth run would involve, the statistical accuracy of using the mean of two results would be significantly improved.

    I will reiterate though that overall the review was informative and well written; it was only the benchmarks themselves which were a bit pointless.
  • DigitalFreak - Thursday, May 17, 2007 - link

    This is yet another perfect example of why ATI needs to open up Crossfire support to NVidia chipset motherboards. In the Intel space, the only supported chipsets that actually give them the bandwidth they need are the 975X and X38. I would think they would want to sell as many cards as possible. Reply
  • OrSin - Thursday, May 17, 2007 - link

    SLI and Crossfire as far asIi can see are not needed for almost anything. I have a 6800 and 7900 and when I was shopping around I could not find a single reason to get another 6800 and go SLI instead just of getting a 7900. Thats the same for crossfire. SLI and crossfire support in games are just not good enough. The 6800 would have been 30% less then the 7900, but the gains would have been 60% less on a good day and no gain at all for several games.

    With all that rambling it just means that the P35 is a great board, so unless you need crossifre (and most should not) get it. And dont wait for the next over-hyped product (X38). Hows thats :)
  • PrinceGaz - Thursday, May 17, 2007 - link

    SLI/Crossfire is never needed a good upgrade path if the next-gen product is already out. You're almost always much better off selling your old card and buying a new one from the current generation as it works out no more expensive, but provides better performance, uses less power and makes less noise, and has none of the compatibility issues associated with twin graphics-card configurations.

    However, that does not make SLI and Crossfire useless. They are needed for bragging rights by people whose weekly shopping list includes having a large tub of liquid-nitrogen delivered, and by those who are worried about the size of their ePenis. The rest of us have no need of going the twin graphics-card route unless the money is burning a hole in our pocket anyway and we've nothing better to do with it.

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