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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i have and have been using an old ati x800 gt 256 mb ddr3 i can run bioshock at low res this being an old card i got no hope of a successful upgrade from ati