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GeForce 8600 GT 512MB DDR2 vs Radeon HD 5670

Intro

The GeForce 8600 GT 512MB DDR2 uses a 80 nm design. nVidia has clocked the core frequency at 540 MHz. The DDR2 memory runs at a speed of 400 MHz on this model. It features 32 SPUs as well as 16 TAUs and 8 ROPs.

Compare that to the Radeon HD 5670, which makes use of a 40 nm design. AMD has set the core speed at 775 MHz. The GDDR5 memory works at a frequency of 1000 MHz on this card. It features 400(80x5) SPUs along with 20 TAUs and 8 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8600 GT 512MB DDR2 47 Watts
Radeon HD 5670 61 Watts
Difference: 14 Watts (30%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 5670 will be 400% quicker than the GeForce 8600 GT 512MB DDR2 in general, due to its greater bandwidth. (explain)

Radeon HD 5670 64000 MB/sec
GeForce 8600 GT 512MB DDR2 12800 MB/sec
Difference: 51200 (400%)

Texel Rate

The Radeon HD 5670 will be much (more or less 79%) more effective at texture filtering than the GeForce 8600 GT 512MB DDR2. (explain)

Radeon HD 5670 15500 Mtexels/sec
GeForce 8600 GT 512MB DDR2 8640 Mtexels/sec
Difference: 6860 (79%)

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon HD 5670 is a better choice, by a large margin. (explain)

Radeon HD 5670 6200 Mpixels/sec
GeForce 8600 GT 512MB DDR2 4320 Mpixels/sec
Difference: 1880 (44%)

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:

Radeon HD 5670

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 5670
Manufacturer nVidia AMD
Year April 2007 January 14, 2010
Code Name G84 Redwood XT
Memory 512 MB 1024 MB
Core Speed 540 MHz 775 MHz
Memory Speed 800 MHz 4000 MHz
Power (Max TDP) 47 watts 61 watts
Bandwidth 12800 MB/sec 64000 MB/sec
Texel Rate 8640 Mtexels/sec 15500 Mtexels/sec
Pixel Rate 4320 Mpixels/sec 6200 Mpixels/sec
Unified Shaders 32 400(80x5)
Texture Mapping Units 16 20
Render Output Units 8 8
Bus Type DDR2 GDDR5
Bus Width 128-bit 128-bit
Fab Process 80 nm 40 nm
Transistors 289 million 627 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 largest amount of data (measured in MB per second) that can be transferred across the external memory interface in one second. The number is calculated by multiplying the card's interface width by its memory clock speed. If the card has DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one second. This is calculated by multiplying the total texture units of the card by the core clock 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 applied in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly write to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

Hide Prices

GeForce 8600 GT 512MB DDR2

Amazon.com

Check prices at:

Radeon HD 5670

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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