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GeForce 8800 GT 1GB vs GeForce 9800 GT 512MB

Intro

The GeForce 8800 GT 1GB uses a 65 nm design. nVidia has clocked the core frequency at 600 MHz. The GDDR3 memory runs at a frequency of 900 MHz on this particular card. It features 112 SPUs as well as 56 TAUs and 16 Rasterization Operator Units.

Compare those specifications to the GeForce 9800 GT 512MB, which comes with core clock speeds of 600 MHz on the GPU, and 900 MHz on the 512 MB of GDDR3 RAM. It features 112 SPUs as well as 56 Texture Address Units and 16 ROPs.

F.E.A.R. 2

Settings: Maximum Quality
AA: 4x
AF: 8x
Resolution: 1920x1200
Test Machine: Unknown (Source)
GeForce 8800 GT 1GB 38 FPS
GeForce 9800 GT 512MB 37 FPS
Difference: 1 FPS (3%)

Fallout 3

Settings: Very High Quality
AA: 8x
AF: 16x
Resolution: 1920x1200
Test Machine: Tom's Hardware Test Machine (Source)
GeForce 8800 GT 1GB 34 FPS
GeForce 9800 GT 512MB 31 FPS
Difference: 3 FPS (10%)

Fallout 3

Settings: Very High Quality
AA: 4x
AF: 8x
Resolution: 1680x1050
Test Machine: Tom's Hardware Charts Test Rig (Source)
GeForce 8800 GT 1GB 55 FPS
GeForce 9800 GT 512MB 54 FPS
Difference: 1 FPS (2%)

Far Cry 2

Settings: Very High Qualty
AA: none
AF: none
Resolution: 1920x1200
Test Machine: Intel Core i7-920,3 x 2 GB Ram,Windows Vista Ultimate 32 Bit SP1 (Source)
GeForce 9800 GT 512MB 42 FPS
GeForce 8800 GT 1GB 41 FPS
Difference: 1 FPS (2%)

Left4Dead

Settings: Very High Quality
AA: 8x
AF: 16x
Resolution: 1920x1200
Test Machine: Tom's Hardware Test Machine (Source)
GeForce 8800 GT 1GB 37 FPS
GeForce 9800 GT 512MB 36 FPS
Difference: 1 FPS (3%)

Left4Dead

Settings: Very High Quality
AA: 4x
AF: 8x
Resolution: 1920x1200
Test Machine: Tom's Hardware Charts Test Rig (Source)
GeForce 8800 GT 1GB 47 FPS
GeForce 9800 GT 512MB 45 FPS
Difference: 2 FPS (4%)

Tom Clancy's Endwar

Settings: High Quality
AA: 4x
AF: 8x
Resolution: 1920x1200
Test Machine: Tom's Hardware Test Machine (Source)
GeForce 8800 GT 1GB 16 FPS
GeForce 9800 GT 512MB 15 FPS
Difference: 1 FPS (7%)

Tom Clancy's H.A.W.X

Settings: High Quality
AA: 4x
AF: 8x
Resolution: 1680x1050
Test Machine: Tom's Hardware Charts Test Rig (Source)
GeForce 8800 GT 1GB 33 FPS
GeForce 9800 GT 512MB 33 FPS
Difference: 0 FPS (0%)

GeForce 8800 GT 1GB wins

(Based entirely on the benchmarks listed above)

When combining all game benchmark scores on this page together, the GeForce 8800 GT 1GB wins overall, by 8 FPS. Please note that we do not have the results of every benchmark ever done for these cards, so the results may differ wildly in different games.

GeForce 8800 GT 1GB 301 FPS
GeForce 9800 GT 512MB 293 FPS
Difference: 8 FPS (3%)

Power Usage and Theoretical Benchmarks

Both cards have the same power consumption.

Memory Bandwidth

Both cards have exactly the same memory bandwidth, so in theory they should perform the same. (explain)

Texel Rate

Both cards have the exact same texel fill rate, so in theory they should be equally good at at anisotropic filtering. (explain)

Pixel Rate

Both cards have exactly the same pixel rate, so in theory they should be equally good at at FSAA, and be capable of handling the same resolutions. (explain)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

GeForce 8800 GT 1GB

Amazon.com

GeForce 9800 GT 512MB

Amazon.com

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

Model GeForce 8800 GT 1GB GeForce 9800 GT 512MB
Manufacturer nVidia nVidia
Year Dec 2007 July 2008
Code Name G92 G92a/b
Fab Process 65 nm 65/55 nm
Bus PCIe x16 2.0 PCIe x16 2.0
Memory 1024 MB 512 MB
Core Speed 600 MHz 600 MHz
Shader Speed 1500 MHz 1500 MHz
Memory Speed 900 MHz (1800 MHz effective) 900 MHz (1800 MHz effective)
Unified Shaders 112 112
Texture Mapping Units 56 56
Render Output Units 16 16
Bus Type GDDR3 GDDR3
Bus Width 256-bit 256-bit
DirectX Version DirectX 10 DirectX 10
OpenGL Version OpenGL 3.0 OpenGL 3.0
Power (Max TDP) 105 watts 105 watts
Shader Model 4.0 4.0
Bandwidth 57600 MB/sec 57600 MB/sec
Texel Rate 33600 Mtexels/sec 33600 Mtexels/sec
Pixel Rate 9600 Mpixels/sec 9600 Mpixels/sec

Memory Bandwidth: Memory bandwidth is the max amount of information (measured in MB per second) that can be transferred across the external memory interface within a second. It is worked out by multiplying the card's bus width by its memory clock speed. If it uses DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed per second. This is worked out by multiplying the total texture units by the core clock speed of the chip. The higher this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly write to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.

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