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GeForce 8600 GT 512MB DDR2 vs GeForce GTX 285 2GB

Intro

The GeForce 8600 GT 512MB DDR2 makes use of a 80 nm design. nVidia has clocked the core speed at 540 MHz. The DDR2 memory works at a frequency of 400 MHz on this particular card. It features 32 SPUs as well as 16 Texture Address Units and 8 Rasterization Operator Units.

Compare those specifications to the GeForce GTX 285 2GB, which features GPU core speed of 648 MHz, and 2048 MB of GDDR3 memory running at 1242 MHz through a 512-bit bus. It also features 240 SPUs, 80 Texture Address Units, and 32 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8600 GT 512MB DDR2 47 Watts
GeForce GTX 285 2GB 204 Watts
Difference: 157 Watts (334%)

Memory Bandwidth

Performance-wise, the GeForce GTX 285 2GB should in theory be much superior to the GeForce 8600 GT 512MB DDR2 overall. (explain)

GeForce GTX 285 2GB 158976 MB/sec
GeForce 8600 GT 512MB DDR2 12800 MB/sec
Difference: 146176 (1142%)

Texel Rate

The GeForce GTX 285 2GB is quite a bit (more or less 500%) more effective at anisotropic filtering than the GeForce 8600 GT 512MB DDR2. (explain)

GeForce GTX 285 2GB 51840 Mtexels/sec
GeForce 8600 GT 512MB DDR2 8640 Mtexels/sec
Difference: 43200 (500%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTX 285 2GB is a better choice, by far. (explain)

GeForce GTX 285 2GB 20736 Mpixels/sec
GeForce 8600 GT 512MB DDR2 4320 Mpixels/sec
Difference: 16416 (380%)

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 GTX 285 2GB

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 GTX 285 2GB
Manufacturer nVidia nVidia
Year April 2007 January 15, 2009
Code Name G84 G200b
Memory 512 MB 2048 MB
Core Speed 540 MHz 648 MHz
Memory Speed 800 MHz 2484 MHz
Power (Max TDP) 47 watts 204 watts
Bandwidth 12800 MB/sec 158976 MB/sec
Texel Rate 8640 Mtexels/sec 51840 Mtexels/sec
Pixel Rate 4320 Mpixels/sec 20736 Mpixels/sec
Unified Shaders 32 240
Texture Mapping Units 16 80
Render Output Units 8 32
Bus Type DDR2 GDDR3
Bus Width 128-bit 512-bit
Fab Process 80 nm 55 nm
Transistors 289 million 1400 million
Bus PCIe x16 PCIe x16 2.0
DirectX Version DirectX 10 DirectX 10
OpenGL Version OpenGL 3.0 OpenGL 3.1

Memory Bandwidth: Bandwidth is the maximum amount of data (counted in MB per second) that can be transferred over the external memory interface in a second. It's worked out by multiplying the card's interface width by its memory clock speed. If it uses DDR type RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, 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 number of texture map elements (texels) that are processed in one second. This 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 handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly record to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth - 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 GTX 285 2GB

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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