NVIDIA GeForce 7800 GTX (G70)
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Page 13 of 25 - Test Setup & GPU Comparisons
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Test Setup & GPU Comparisons
Test Setup
With all the tech details established, let's get down to the results from our testing. We clinched a pair of NVIDIA GeForce 7800 GTX 256MB graphics cards and we also managed to acquire dual GeForce 6800 Ultra 512MB graphics cards. What do all people with dual graphics cards do these days? They SLI them, and so did we on an ASUS A8N-SLI (nForce4 SLI) motherboard with an Athlon 64 3500+ and 1GB of Corsair DDR400 memory set for dual-channel. We would have loved to put in an Athlon 64 FX-55, but for some internal results compatibility sake, we used back an Athlon 64 3500+ CPU. In case you've not been up to speed with our CPU articles, the A64 3500+ is able to keep pace with an Intel 3.2GHz Extreme Edition or better as far as the gaming arena is concerned. So that should settle any doubts regarding how high we can scale our performance numbers.
Of course we also involved an ATI RADEON X850 XT Platinum Edition to get a good gauge how much faster the GeForce 7800 GTX is ahead of the former best performing graphics card. All in all, we have five different results for each test iteration and they are as follows:- GeForce 7800 GTX - SLI, GeForce 7800 GTX, GeForce 6800 Ultra - SLI, GeForce 6800 Ultra and the RADEON X850 XT P.E.. The NVIDIA graphics cards used the latest ForceWare 77.62 driver while ATI's sole card was tested with their Catalyst 5.6 driver set. As usual, we list the benchmarks used to gauge all the cards and following that we have a GPU comparison table for reference purposes:-
- Futuremark 3DMark03 Pro (version 360)
- Futuremark 3DMark05 Pro (version 120)
- Codecult's Codecreatures
- Unreal Tournament 2004 Demo
- Halo: Combat Evolved
- GunMetal Demo
- AquaMark 3 benchmark
- High Dynamic Range (HDR) Lighting demo
- FarCry 1.31
- Doom 3
GPU/VPU | NVIDIA GeForce 7800 GTX | NVIDIA GeForce 6800 Ultra | ATI RADEON X850 XT Platinum Edition |
---|---|---|---|
Core Code | G70 | NV40 | R480 |
Transistor Count | 302 million | 222 million | 160 million |
Manufacturing Process (microns) | 0.11 | 0.13 | 0.13 |
Core Clock | 430MHz | 400MHz | 540MHz |
Vertex Shader Pipelines | 8 | 6 | 6 |
Pixel Shader (Rendering) Pipelines | 24 | 16 | 16 |
Peak Texture Fill Rate (Mtexels/s) | 10,320 | 6,400 | 8,640 |
Raster Operation Pipelines | 16 | 16 | 16 |
Peak Pixel Fill Rate (MPixels/s) | 6,880 | 6,400 | 8,640 |
Memory Clock | 600MHz (1200MHz DDR3) | 550MHz (1100MHz DDR3) | 90MHz (1180MHz DDR3) |
Memory Bus Interface | 256-bit | 256-bit | 256-bit |
Total Memory Bandwidth | 38.4GB/s | 35.2GB/s | 37.8GB/s |
NVIDIA CineFX Engine | 4.0 | 3.0 | - |
NVIDIA Intellisample Technology | 4.0 | 3.0 | - |
NVIDIA UltraShadow Technology | II | II | - |
ATI SMARTSHADER | - | - | HD |
ATI SMOOTHVISION | - | - | HD |
ATI HYPER Z | - | - | HD |
Pixel Shader Support | 3.0 | 3.0 | 2.0 |
Vertex Shader Support | 3.0 | 3.0 | 2.0b |
DirectX Support | Up to DirectX 9.0c | Up to DirectX 9.0c | Up to DirectX 9.0b |
FSAA Mode | Multi Sampling (up to 6x) + Transparency AA option | Multi Sampling (up to 6x) | Multi Sampling (up to 6x) |
Anisotropic filtering Modes | Up to 16x | Up to 16x | Up to 16x |
Other Features |
|
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RAMDAC | Dual 400MHz | Dual 400MHz | Dual 400MHz |
TV Output | Int., HDTV output | Int., 1024x768 | Int., 1024x768 |
TMDS transmitter | dual, integrated | On-board IC | Int. 165MHz |
Graphics Card Interface | PCIe x16 | PCIe x16 | PCIe x16 |
PCIe Power Connectors | 1 | 1 | 1 |
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