GeForce 8800 GTS (G80) 320MB vs Radeon HD 5750 1GB

Intro

Compare those specs to the Radeon HD 5750 1GB, which makes use of a 40 nm design. AMD has clocked the core frequency at 700 MHz. The GDDR5 memory 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.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5750 1GB		86 Watts
GeForce 8800 GTS (G80) 320MB		143 Watts
	Difference: 57 Watts (66%)

Memory Bandwidth

Performance-wise, the Radeon HD 5750 1GB should in theory be just a bit superior to the GeForce 8800 GTS (G80) 320MB overall. (explain)

Radeon HD 5750 1GB		73600 MB/sec
GeForce 8800 GTS (G80) 320MB		63360 MB/sec
	Difference: 10240 (16%)

Texel Rate

The Radeon HD 5750 1GB is just a bit (more or less 2%) better at anisotropic filtering than the GeForce 8800 GTS (G80) 320MB. (explain)

Radeon HD 5750 1GB		25200 Mtexels/sec
GeForce 8800 GTS (G80) 320MB		24624 Mtexels/sec
	Difference: 576 (2%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon HD 5750 1GB is the winner, but not by far. (explain)

Radeon HD 5750 1GB		11200 Mpixels/sec
GeForce 8800 GTS (G80) 320MB		10260 Mpixels/sec
	Difference: 940 (9%)

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 largest amount of data (in units of megabytes per second) that can be transferred past the external memory interface in a second. It is calculated by multiplying the bus width by its memory clock speed. In the case of DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the 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 amount of texture map elements (texels) that are processed in one second. This is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly write to the local memory per 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 clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.