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GeForce 8600 GT 512MB DDR2 vs Radeon HD 5750 512MB

Intro

The GeForce 8600 GT 512MB DDR2 makes use of a 80 nm design. nVidia has set the core speed at 540 MHz. The DDR2 memory is set to run at a speed of 400 MHz on this specific model. It features 32 SPUs along with 16 Texture Address Units and 8 Rasterization Operator Units.

Compare all that to the Radeon HD 5750 512MB, which uses a 40 nm design. AMD has clocked the core frequency at 700 MHz. The GDDR5 RAM runs at a frequency of 1150 MHz on this specific card. It features 720(144x5) SPUs along with 36 Texture Address Units and 16 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8600 GT 512MB DDR2 47 Watts
Radeon HD 5750 512MB 86 Watts
Difference: 39 Watts (83%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 5750 512MB should perform a lot faster than the GeForce 8600 GT 512MB DDR2 in general. (explain)

Radeon HD 5750 512MB 73600 MB/sec
GeForce 8600 GT 512MB DDR2 12800 MB/sec
Difference: 60800 (475%)

Texel Rate

The Radeon HD 5750 512MB is quite a bit (more or less 192%) better at AF than the GeForce 8600 GT 512MB DDR2. (explain)

Radeon HD 5750 512MB 25200 Mtexels/sec
GeForce 8600 GT 512MB DDR2 8640 Mtexels/sec
Difference: 16560 (192%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon HD 5750 512MB is the winner, by far. (explain)

Radeon HD 5750 512MB 11200 Mpixels/sec
GeForce 8600 GT 512MB DDR2 4320 Mpixels/sec
Difference: 6880 (159%)

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

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Radeon HD 5750 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 Radeon HD 5750 512MB
Manufacturer nVidia AMD
Year April 2007 October 13, 2009
Code Name G84 Juniper LE
Memory 512 MB 512 MB
Core Speed 540 MHz 700 MHz
Memory Speed 800 MHz 4600 MHz
Power (Max TDP) 47 watts 86 watts
Bandwidth 12800 MB/sec 73600 MB/sec
Texel Rate 8640 Mtexels/sec 25200 Mtexels/sec
Pixel Rate 4320 Mpixels/sec 11200 Mpixels/sec
Unified Shaders 32 720(144x5)
Texture Mapping Units 16 36
Render Output Units 8 16
Bus Type DDR2 GDDR5
Bus Width 128-bit 128-bit
Fab Process 80 nm 40 nm
Transistors 289 million 1040 million
Bus PCIe x16 PCIe 2.1 x16
DirectX Version DirectX 10 DirectX 11
OpenGL Version OpenGL 3.0 OpenGL 3.2

Memory Bandwidth: Bandwidth is the max amount of data (in units of megabytes per second) that can be moved past the external memory interface within a second. It is worked out by multiplying the card's interface width by its memory speed. If it uses DDR memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. 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 amount of texture map elements (texels) that can be applied per second. This figure is worked out by multiplying the total amount of texture units of the card by the core clock 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 processed in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

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GeForce 8600 GT 512MB DDR2

Amazon.com

Check prices at:

Radeon HD 5750 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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