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GeForce 8800 GTS (G80) 640MB vs Radeon HD 6750 1GB

Intro

The GeForce 8800 GTS (G80) 640MB features a GPU core speed of 513 MHz, and the 640 MB of GDDR3 RAM runs at 792 MHz through a 320-bit bus. It also features 96 SPUs, 48 TAUs, and 20 ROPs.

Compare all of that to the Radeon HD 6750 1GB, which has a core clock frequency of 725 MHz and a GDDR5 memory frequency of 1000 MHz. It also makes use of a 128-bit memory bus, and uses a 40 nm design. It is comprised of 720 SPUs, 36 Texture Address Units, and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6750 1GB 86 Watts
GeForce 8800 GTS (G80) 640MB 143 Watts
Difference: 57 Watts (66%)

Memory Bandwidth

In theory, the Radeon HD 6750 1GB is 1% quicker than the GeForce 8800 GTS (G80) 640MB overall, because of its greater bandwidth. (explain)

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

Texel Rate

The Radeon HD 6750 1GB is just a bit (approximately 6%) better at texture filtering than the GeForce 8800 GTS (G80) 640MB. (explain)

Radeon HD 6750 1GB 26100 Mtexels/sec
GeForce 8800 GTS (G80) 640MB 24624 Mtexels/sec
Difference: 1476 (6%)

Pixel Rate

The Radeon HD 6750 1GB will be just a bit (about 13%) faster with regards to FSAA than the GeForce 8800 GTS (G80) 640MB, and also able to handle higher screen resolutions without losing too much performance. (explain)

Radeon HD 6750 1GB 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 1GB

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 1GB
Manufacturer nVidia AMD
Year Nov 2006 (640) January 2011
Code Name G80 Juniper Pro
Memory 640 MB 1024 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 4.1

Memory Bandwidth: Memory bandwidth is the max amount of information (counted in MB 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. In the case of DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one second. This number is calculated 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 applied in a second.

Pixel Rate: Pixel rate is the most pixels the video card can possibly write to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Raster Operations Pipelines 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 also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

Hide Prices

GeForce 8800 GTS (G80) 640MB

Amazon.com

Check prices at:

Radeon HD 6750 1GB

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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