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GeForce 8600 GT 512MB DDR2 vs GeForce 9800 GT 512MB

Intro

The GeForce 8600 GT 512MB DDR2 features a clock frequency of 540 MHz and a DDR2 memory frequency of 400 MHz. It also uses a 128-bit bus, and makes use of a 80 nm design. It is made up of 32 SPUs, 16 Texture Address Units, and 8 ROPs.

Compare those specifications to the GeForce 9800 GT 512MB, which features core 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.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8600 GT 512MB DDR2 47 Watts
GeForce 9800 GT 512MB 105 Watts
Difference: 58 Watts (123%)

Memory Bandwidth

Theoretically speaking, the GeForce 9800 GT 512MB should perform quite a bit faster than the GeForce 8600 GT 512MB DDR2 overall. (explain)

GeForce 9800 GT 512MB 57600 MB/sec
GeForce 8600 GT 512MB DDR2 12800 MB/sec
Difference: 44800 (350%)

Texel Rate

The GeForce 9800 GT 512MB is much (about 289%) better at AF than the GeForce 8600 GT 512MB DDR2. (explain)

GeForce 9800 GT 512MB 33600 Mtexels/sec
GeForce 8600 GT 512MB DDR2 8640 Mtexels/sec
Difference: 24960 (289%)

Pixel Rate

The GeForce 9800 GT 512MB should be much (approximately 122%) faster with regards to full screen anti-aliasing than the GeForce 8600 GT 512MB DDR2, and also should be capable of handling higher resolutions without slowing down too much. (explain)

GeForce 9800 GT 512MB 9600 Mpixels/sec
GeForce 8600 GT 512MB DDR2 4320 Mpixels/sec
Difference: 5280 (122%)

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

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GeForce 8600 GT 512MB DDR2

Amazon.com

Check prices at:

GeForce 9800 GT 512MB

Amazon.com

Check prices at:

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

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Model GeForce 8600 GT 512MB DDR2 GeForce 9800 GT 512MB
Manufacturer nVidia nVidia
Year April 2007 July 2008
Code Name G84 G92a/b
Memory 512 MB 512 MB
Core Speed 540 MHz 600 MHz
Memory Speed 800 MHz 1800 MHz
Power (Max TDP) 47 watts 105 watts
Bandwidth 12800 MB/sec 57600 MB/sec
Texel Rate 8640 Mtexels/sec 33600 Mtexels/sec
Pixel Rate 4320 Mpixels/sec 9600 Mpixels/sec
Unified Shaders 32 112
Texture Mapping Units 16 56
Render Output Units 8 16
Bus Type DDR2 GDDR3
Bus Width 128-bit 256-bit
Fab Process 80 nm 65/55 nm
Transistors 289 million 754 million
Bus PCIe x16 PCIe x16 2.0
DirectX Version DirectX 10 DirectX 10
OpenGL Version OpenGL 3.0 OpenGL 3.0

Memory Bandwidth: Bandwidth is the max amount of data (in units of megabytes per second) that can be transferred past the external memory interface in a second. The number is worked out by multiplying the card's interface width by its memory speed. If it uses DDR RAM, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed in one second. This figure is worked out by multiplying the total number of texture units by the core speed of the chip. The better the texel rate, the better the 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 that the graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

Hide Prices

GeForce 8600 GT 512MB DDR2

Amazon.com

Check prices at:

GeForce 9800 GT 512MB

Amazon.com

Check prices at:

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.

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