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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 frequency at 540 MHz. The DDR2 RAM runs at a frequency of 400 MHz on this particular card. It features 32 SPUs as well as 16 TAUs and 8 ROPs.

Compare that to the GeForce GTX 285 2GB, which has a core clock frequency of 648 MHz and a GDDR3 memory frequency of 1242 MHz. It also uses a 512-bit memory bus, and makes use of a 55 nm design. It features 240 SPUs, 80 TAUs, and 32 ROPs.

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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

The GeForce GTX 285 2GB should in theory perform much faster than the GeForce 8600 GT 512MB DDR2 in general. (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 should be a lot (more or less 500%) better at texture 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

The GeForce GTX 285 2GB will be a lot (about 380%) better at AA than the GeForce 8600 GT 512MB DDR2, and should be capable of handling higher resolutions without slowing down too much. (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 max amount of data (counted in MB per second) that can be moved over the external memory interface in one second. The number is worked out by multiplying the interface width by its memory clock speed. If it uses DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could 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 colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max 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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