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GeForce 8800 GTS (G80) 640MB vs Radeon HD 6750

Intro

The GeForce 8800 GTS (G80) 640MB has a clock frequency of 513 MHz and a GDDR3 memory frequency of 792 MHz. It also features a 320-bit memory bus, and uses a 90 nm design. It is made up of 96 SPUs, 48 TAUs, and 20 ROPs.

Compare that to the Radeon HD 6750, which has a GPU core clock speed of 725 MHz, and 512 MB of GDDR5 RAM set to run at 1000 MHz through a 128-bit bus. It also features 720 SPUs, 36 TAUs, and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6750 86 Watts
GeForce 8800 GTS (G80) 640MB 143 Watts
Difference: 57 Watts (66%)

Memory Bandwidth

The Radeon HD 6750 should in theory be a bit faster than the GeForce 8800 GTS (G80) 640MB in general. (explain)

Radeon HD 6750 64000 MB/sec
GeForce 8800 GTS (G80) 640MB 63360 MB/sec
Difference: 640 (1%)

Texel Rate

The Radeon HD 6750 should be a small bit (about 6%) better at texture filtering than the GeForce 8800 GTS (G80) 640MB. (explain)

Radeon HD 6750 26100 Mtexels/sec
GeForce 8800 GTS (G80) 640MB 24624 Mtexels/sec
Difference: 1476 (6%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon HD 6750 is superior to the GeForce 8800 GTS (G80) 640MB, though not by far. (explain)

Radeon HD 6750 11600 Mpixels/sec
GeForce 8800 GTS (G80) 640MB 10260 Mpixels/sec
Difference: 1340 (13%)

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 8800 GTS (G80) 640MB

Amazon.com

Check prices at:

Radeon HD 6750

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 8800 GTS (G80) 640MB Radeon HD 6750
Manufacturer nVidia AMD
Year Nov 2006 (640) January 2011
Code Name G80 Juniper Pro
Memory 640 MB 512 MB
Core Speed 513 MHz 725 MHz
Memory Speed 1584 MHz 4000 MHz
Power (Max TDP) 143 watts 86 watts
Bandwidth 63360 MB/sec 64000 MB/sec
Texel Rate 24624 Mtexels/sec 26100 Mtexels/sec
Pixel Rate 10260 Mpixels/sec 11600 Mpixels/sec
Unified Shaders 96 720
Texture Mapping Units 48 36
Render Output Units 20 16
Bus Type GDDR3 GDDR5
Bus Width 320-bit 128-bit
Fab Process 90 nm 40 nm
Transistors 681 million 1040 million
Bus PCIe x16 PCIe x16
DirectX Version DirectX 10 DirectX 11
OpenGL Version OpenGL 3.0 OpenGL 4.0

Memory Bandwidth: Bandwidth is the largest amount of information (measured in megabytes per second) that can be transferred past the external memory interface in a second. The number is calculated by multiplying the card's bus width by its memory clock speed. If the card has DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, 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 are applied in one second. This figure is calculated by multiplying the total 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 applied in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly write to the 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 the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

Hide Prices

GeForce 8800 GTS (G80) 640MB

Amazon.com

Check prices at:

Radeon HD 6750

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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