Power Within Reach: NVIDIA's GeForce 8800 GTS 320MB
by Derek Wilson on February 12, 2007 9:00 AM EST- Posted in
- GPUs
Half-Life 2: Episode One Performance
Games based on Valve's Source engine have long been a staple of our test suites. Constantly evolving, HL2:EP1 show off some of the newer features of the engine. We are using the latest version of the game available on Steam as of the publication of this article. Our benchmark makes use of the timedemo functionality provided through Source. The demo we recorded is a battle with a flying gunship in a wooden house in which house and gunship are blown to bits. All the settings are turned up as high as they will go.
Half-Life 2: Episode One brings us another test where the extra 320MB of RAM the original 8800 GTS enjoys makes no difference when AA is not enabled. Performance between the two variants is identical here with all the settings but AA cranked up. Even at 2560x1600 there is no real difference, which is quite impressive for a card with less than 512MB of RAM.
Enabling 4xAA shows us that we can still get good performance at resolutions below 2560x1600 along with antialiasing. Up until our highest resolution test, the two 8800 GTS cards performed very similarly. This means that even at high resolutions with AA enabled, HL2:EP1 doesn't incur the same penalty on the 8800 GTS 320MB that other games do.
Games based on Valve's Source engine have long been a staple of our test suites. Constantly evolving, HL2:EP1 show off some of the newer features of the engine. We are using the latest version of the game available on Steam as of the publication of this article. Our benchmark makes use of the timedemo functionality provided through Source. The demo we recorded is a battle with a flying gunship in a wooden house in which house and gunship are blown to bits. All the settings are turned up as high as they will go.
Half-Life 2: Episode One brings us another test where the extra 320MB of RAM the original 8800 GTS enjoys makes no difference when AA is not enabled. Performance between the two variants is identical here with all the settings but AA cranked up. Even at 2560x1600 there is no real difference, which is quite impressive for a card with less than 512MB of RAM.
Enabling 4xAA shows us that we can still get good performance at resolutions below 2560x1600 along with antialiasing. Up until our highest resolution test, the two 8800 GTS cards performed very similarly. This means that even at high resolutions with AA enabled, HL2:EP1 doesn't incur the same penalty on the 8800 GTS 320MB that other games do.
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tacoburrito - Monday, February 12, 2007 - link
With all the eye candy turned on, the 320mb card seems to be only on par with the previous gen 79xx cards, but costs almost twice as much. I'd much rather cough up the extra $200 and get the full GTS version.DerekWilson - Monday, February 12, 2007 - link
Actually, the 320MB card blows away the 7 series in our tests. Why would you say that it's only on par? At 16x12, the 8800 GTS 320MB is 60% faster, and the difference in performance only gets larger from there.tacoburrito - Monday, February 12, 2007 - link
With the exception of Half Life 2, at 4x AA, wouldn't you say that the 8800 GTS 320 is only marginally better than 7950 GT, but would costs twice a much?tacoburrito - Monday, February 12, 2007 - link
Whoops, I meant to say 7900 GTXDerekWilson - Monday, February 12, 2007 - link
From the context of the thread, I assumed you were talking about Oblivion.Without AA, the 8800 320MB is much better than the 7900 GTX. With AA, there is an argument to be made, but the price of the 7900 GTX (as Jarred pointed out) is higher.
JarredWalton - Monday, February 12, 2007 - link
I'd be very curious to find out where you're seeing 7900 GTX cards for "half the price". I don't see any in stock when taking a quick look at major resellers, and our http://labs.anandtech.com/products.php?sfilter=462">Pricing Engine confirms that. I'm pretty sure the 7900 GTX is discontinued now, and prices never got below $400.Wwhat - Monday, February 12, 2007 - link
It still remains to be seen how DX10 games (or future OpenGL games that use geometry shaders?) run on the various incarnations of the new cards, you should have put that in the conclusion as a caveat, it's not just textures anymore you know.I don't thinks there's anything at all currently that uses geometry shaders, you wonder why some developer doesn't throw together a quick test utility, billions of people on the planet and nobody can do that little effort? geez.
Surely someone at crytek or Id or something can write a small looping thing with a framecounter? anand should send out some mails, get someone on his feet.
DerekWilson - Monday, February 12, 2007 - link
There are some dx10 sample apps that make use of geometry shaders ... I've been working on testing these, but it is more difficult than it may seem as FRAPS has trouble with DX10 apps.You do have a point though -- DX10 performance will be important. The problem is that we can't really make a recommendation based on DX10 performance.
The 8 series parts do have more value than the 7 series and x1k series parts in that they support DX10. But this is as far as we can take it. Performance in the games we have does matter, and it is much more prudent to make a purchase only based on the information we know.
Sure, if the cost and performance of an 8 series part is the same or very near some DX9 class hardware, the features and DX10 support are there to recommend it over the competition. But it's hard to really use this information in any other capacity without knowing how good their DX10 support really is.
Awax - Monday, February 12, 2007 - link
The main point for me is the low impact of memory size on modern games.On previous generation game, like Quake4, developers had to use a lot of high resolution texture/bump map/lookup map to achieve advanced effect with the limited capacity in raw performances and flexibility of the cards available.
With DX9 and more in DX10, the new way is to _CALCULATE_ things completely instead of having them interpolated with tricks using intermediary results or already computed lookup tables stored in textures.
DerekWilson - Monday, February 12, 2007 - link
But new ways to calculate things will also benefit from having huge amounts of data to calculate things from.It's really hard to speculate on the direction DX10 games will take at this point. Certianly we will see more use of programmable features and a heavier impact on processing power. But memory usage will also increase. We'll just have to wait and see what happens.