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

Intro

Compare those specifications to the Radeon HD 6750 1GB, which has clock speeds of 725 MHz on the GPU, and 1000 MHz on the 1024 MB of GDDR5 memory. It features 720 SPUs along with 36 TAUs and 16 ROPs.

Display Graphs

Hide Graphs

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

Theoretically, the Radeon HD 6750 1GB should be a bit faster than the GeForce 8800 GTS (G80) 640MB in general. (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 (approximately 13%) faster with regards to AA than the GeForce 8800 GTS (G80) 640MB, and also capable of handling higher resolutions better. (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

Specifications

Memory Bandwidth: Memory bandwidth is the max amount of data (counted in megabytes per second) that can be moved across the external memory interface in a second. It's worked out by multiplying the card's bus width by its memory clock speed. If it uses DDR type memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster 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 can be processed in one second. This figure is worked out by multiplying the total texture units by the core clock speed of the chip. The higher the texel rate, the better the video card will be at 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 card could possibly record to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.