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GeForce 8800 GT 1GB vs GeForce 9800 GT 512MB

Intro

The GeForce 8800 GT 1GB comes with clock speeds of 600 MHz on the GPU, and 900 MHz on the 1024 MB of GDDR3 memory. It features 112 SPUs along with 56 Texture Address Units and 16 ROPs.

Compare all of that to the GeForce 9800 GT 512MB, which makes use of a 65/55 nm design. nVidia has clocked the core frequency at 600 MHz. The GDDR3 memory runs at a speed of 900 MHz on this specific card. 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 the exact same bandwidth, so theoretically they should perform exactly the same. (explain)

Texel Rate

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

Pixel Rate

Both cards have the exact same pixel rate, so theoretically they should perform equally good at at full screen anti-aliasing, and be capable of handling the same screen 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: Bandwidth is the largest amount of information (measured in MB per second) that can be transferred past the external memory interface in one second. It's calculated by multiplying the bus width by the speed of its memory. In the case of DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This figure is calculated by multiplying the total amount of texture units of the card 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 processed in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly write to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.

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