The Graphics Chips Compared
Turbo Cache (Nvidia) and Hyper Memory (ATI) are features that allow the graphics cards to borrow some RAM from system memory. This minimizes the performance impact of enabling FSAA at higher resolutions on cards with less on-board memory. Under XP, video memory can be expanded from 128 MB or 256 MB to 512 MB. Vista always displays an augmented video memory of 1022 MB.
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| Nvidia Graphics Cards | ||||||
|---|---|---|---|---|---|---|
| Graphics Chip | Code Name | Memory | HDR-R | Vertexshader/Pixelshader | GPU Frequency | Memory Frequency |
| Geforce 8800 Ultra OC | G80 | 768 MB GDDR3 | yes | 4.0 | 660 MHz | 2300 MHz |
| Geforce 8800 Ultra | G80 | 768 MB GDDR3 | yes | 4.0 | 612 MHz | 2160 MHz |
| Geforce 8800 GTX | G80 | 768 MB GDDR3 | yes | 4.0 | 576 MHz | 1800 MHz |
| Geforce 8800 GTS | G80 | 640 MB GDDR3 | yes | 4.0 | 500 MHz | 1600 MHz |
| Geforce 8800 GTS OC | G80 | 320 MB GDDR3 | yes | 4.0 | 575 MHz | 1700 MHz |
| Geforce 8800 GTS | G80 | 320 MB GDDR3 | yes | 4.0 | 500 MHz | 1600 MHz |
| Geforce 8600 GTS | G84 | 512 MB GDDR3 | yes | 4.0 | 675 MHz | 2016 MHz |
| Geforce 8600 GTS | G84 | 256 MB GDDR3 | yes | 4.0 | 675 MHz | 2016 MHz |
| Geforce 8600 GT OC | G84 | 256 MB GDDR3 | yes | 4.0 | 580 MHz | 1600 MHz |
| Geforce 8500 GT TC | G86 | 256/1022 MB DDR2 | yes | 4.0 | 459 MHz | 800 MHz |
| Geforce 8400 GS TC | G86 | 256/1022 MB DDR2 | yes | 4.0 | 459 MHz | 800 MHz |
| ATI Graphics Cards | ||||||
| Graphics Chip | Code Name | Memory | HDR-R | Vertexshader/Pixelshader | GPU Frequency | Memory Frequency |
| Radeon HD2900 XT | R600 | 512 MB GDDR3 | yes | 4.0 | 743 MHz | 1656 MHz |
| Radeon HD2600 XT | RV630 | 512 MB GDDR3 | yes | 4.0 | 800 MHz | 1400 MHz |
| Radeon HD2600 XT | RV630 | 256 MB GDDR4 | yes | 4.0 | 800 MHz | 2200 MHz |
| Radeon HD2600 Pro | RV630 | 256 MB DDR3 | yes | 4.0 | 600 MHz | 1400 MHz |
| Radeon HD2400 XT HM | RV610 | 128/1022 MB DDR2 | yes | 4.0 | 700 MHz | 800 MHz |
| Radeon HD2400 Pro HM | RV610 | 256/1022 MB DDR2 | yes | 4.0 | 525 MHz | 800 MHz |
HDR-R=High Dynamic Range Rendering
SM=Shader Model
Memory Frequency=physical frequency is half of DDR
TC=Turbo Cache
HM=Hyper Memory
OC=Overclocked
Test Setup
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| Nvidia Single Graphics Cards, ATI Single and Crossfire Graphics Cards | |
|---|---|
| CPU | Intel Core 2 Extreme X6800, 2.93 GHz |
| FSB | 1066 MHz |
| Motherboard | Intel D975XBX2 |
| Chipset | Intel 975X |
| Memory | 2x1 GByte, Vitesta DDR2 800 4-4-4-12 533 MHz |
| Hard Drive | Hitachi 2 x 120 GByte S-ATA, 8 MB Cache |
| DVD | Gigabyte GO-D1600C |
| LAN | Intel 1000 Pro |
| Audio | Intel High Definition Audio |
| Power Supply | Seasonic M12 600 Watt |
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| Drivers & Configuration | |
|---|---|
| Graphics | ATI Catalyst 7.9Nvidia Forceware 162.22 |
| Opeating System | Windows Vista Enterprise |
| DirectX Version | 10 |
| Chipset Driver Intel | Intel 8.2.0.1014 |
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| Test Matrix | ||||
|---|---|---|---|---|
| Application | Benchmark | Anti Aliasing (AA) | Anisotropic Filtering (AF) | Possible Problems and Settings |
| Bioshock | Fraps/Rapture-Intro, Plasmid-Intro | No AA | Graphics Driver Decides | AF, AA not offered in Game Menu |
| Company of Heroes v1.70 | Game Benchmark | Application Decides | Graphics Driver Decides | AF not offered in Game Menu, -novsync |
| Lost Planet | Fraps/Mission 1 | Application Decides | Application Decides | Row 3 - Cell 4 |
| World in Conflict | Game Benchmark, Fraps/Tutorial | Application Decides | Application Decides | Row 4 - Cell 4 |
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