Head to Head: ATI Radeon X800 XT vs. NVIDIA GeForce 6800 Ultra

For our first head to head comparison we have ATI's top of the line X800 XT against NVIDIA's flagship GeForce 6800 Ultra.

At lower resolutions the performance is close in our first demo, but as we crank up the resolution and turn on AA, the X800 XT pulls ahead:

Half Life 2 AT_canals_08.dem
 
ATI Radeon X800 XT
NVIDIA GeForce 6800 Ultra
Performance Advantage
1024 x 768
142.4
136
4.7%
1280 x 1024
125.6
119.3
5.3%
1600 x 1200
108.2
98.6
9.7%
1024 x 768 - 4X AA
126.5
124.4
1.7%
1280 x 1024 - 4X AA
103.2
92.8
11.2%
1600 x 1200 - 4X AA
81
68.7
17.9%
Winner
-
-
X800 XT

We see the same story in our second benchmark:

Half Life 2 AT_coast_05.dem
 
ATI Radeon X800 XT
NVIDIA GeForce 6800 Ultra
Performance Advantage
1024 x 768
134.2
132.6
1.2%
1280 x 1024
130.4
126.4
3.2%
1600 x 1200
125.7
118.7
5.9%
1024 x 768 - 4X AA
130.1
132.6
1.9%
1280 x 1024 - 4X AA
126.7
119.1
6.4%
1600 x 1200 - 4X AA
114.7
95.3
20.4%
Winner
-
-
X800 XT

...and our third:

Half Life 2 AT_coast_12.dem
 
ATI Radeon X800 XT
NVIDIA GeForce 6800 Ultra
Performance Advantage
1024 x 768
128.8
125
3.0%
1280 x 1024
120.5
114.3
5.4%
1600 x 1200
105.7
100
5.7%
1024 x 768 - 4X AA
121.7
116.7
4.3%
1280 x 1024 - 4X AA
105.7
97.7
8.2%
1600 x 1200 - 4X AA
86.6
73.7
17.5%
Winner
-
-
X800 XT

The X800 XT continues to maintain a significant lead at higher resolutions with AA enaabled:

Half Life 2 AT_prison_05.dem
 
ATI Radeon X800 XT
NVIDIA GeForce 6800 Ultra
Performance Advantage
1024 x 768
150.1
148.4
1.1%
1280 x 1024
136.8
129.6
5.6%
1600 x 1200
109.3
97.2
12.4%
1024 x 768 - 4X AA
143.5
132.1
8.6%
1280 x 1024 - 4X AA
111.5
95.1
17.2%
1600 x 1200 - 4X AA
84.9
69.9
21.5%
Winner
-
-
X800 XT

In our final test the X800 XT only really separates itself from the 6800 Ultra at 1280 x 1024 and 1600 x 1200 with AA enabled.

Half Life 2 AT_c17_12.dem
 
ATI Radeon X800 XT
NVIDIA GeForce 6800 Ultra
Performance Advantage
1024 x 768
88.1
84.6
4.1%
1280 x 1024
86.3
84
2.7%
1600 x 1200
84.1
80.1
5.0%
1024 x 768 - 4X AA
87.2
84.3
3.4%
1280 x 1024 - 4X AA
84.3
77.4
8.9%
1600 x 1200 - 4X AA
80.3
65.6
22.4%
Winner
-
-
X800 XT

What the X800 XT holds over the 6800 Ultra is a 10 - 20% performance advantage in high resolution AA performance, but at lower resolutions and with AA disabled the performance is very similar between the two.

Summary
 
Average Performance Advantage (X800 XT over 6800 Ultra)
1024 x 768
2.8%
1280 x 1024
4.4%
1600 x 1200
7.8%
1024 x 768 - 4X AA
4.0%
1280 x 1024 - 4X AA
10.4%
1600 x 1200 - 4X AA
19.9%
Turning on Anisotropic Filtering Head to Head: ATI Radeon X800 Pro vs. NVIDIA GeForce 6800GT
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  • alexlck - Wednesday, November 17, 2004 - link

    In map AT_coast_05.dem, GF6800U have no performance penalty with 4xAA@1024x768?
  • HardwareD00d - Wednesday, November 17, 2004 - link

    hey, #27, I was gonna say that ;)
  • jediknight - Wednesday, November 17, 2004 - link

    Well, it's obvious from the benchmarks. They don't lie.

    ATI RULZ NVIDIA SUXORZ!!

    (lol@#3)
  • bob661 - Wednesday, November 17, 2004 - link

    Do you need HL2 to play CS: Source? Thanks.
  • wien - Wednesday, November 17, 2004 - link

    #24 There is.. It's called Counter-Strike: Source
  • bob661 - Wednesday, November 17, 2004 - link

    Anyone know if there's multiplayer support in HL2? Thanks.
  • L1FE - Wednesday, November 17, 2004 - link

    Nice and thorough comparison. That 6600GT looks more and more enticing...
  • Rekonn - Wednesday, November 17, 2004 - link

    Great article, looking forward to reading the next one with slower cpus. Being cpu limited with an A64 4000+ is a little scary, I wonder what kind of fps an XP3200+ gets when paired with an AGP 6600GT. (still running an overclocked Barton 2500+)
  • Jalf - Wednesday, November 17, 2004 - link

    I'm surprised at how well NV stacks up... And good to see the 6800 GT beat the X800 Pro. Not because I'm an NV fan, but simply because it makes it easier to choose. When the 6800 GT wins over the equivalent ATI card, even in an ATI-optimized game, then it's kinda easy to choose what to buy... :D
    It's a lot harder with the other cards, where both companies scores some wins in different games.
  • Regs - Wednesday, November 17, 2004 - link

    Yeah, I'm hoping a CPU round up will come after part two! I can afford a 400 dollar video card but not paired with a 700 dollar AMD CPU.

    I did notice a lot of stuttering in my gaming experience with a A64 3000 + 6800 GT/1024 MB pC3200. I was playing at 1280x1024 with 4x/8x max details. So likely I would have to cut out the 8x Aniso to have smooth gameplay. I don't know if that was what Anand was mentioning about with the "Shimmering" of textures with the Manhatten calculations.

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