GeForce 8800 GT 1GB vs Radeon HD 5750 1GB

Intro

Compare all that to the Radeon HD 5750 1GB, which features a clock frequency of 700 MHz and a GDDR5 memory frequency of 1150 MHz. It also features a 128-bit bus, and makes use of a 40 nm design. It is made up of 720(144x5) SPUs, 36 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5750 1GB		86 Watts
GeForce 8800 GT 1GB		105 Watts
	Difference: 19 Watts (22%)

Memory Bandwidth

In theory, the Radeon HD 5750 1GB should be 28% quicker than the GeForce 8800 GT 1GB overall, because of its higher data rate. (explain)

Radeon HD 5750 1GB		73600 MB/sec
GeForce 8800 GT 1GB		57600 MB/sec
	Difference: 16000 (28%)

Texel Rate

The GeForce 8800 GT 1GB should be quite a bit (more or less 33%) more effective at AF than the Radeon HD 5750 1GB. (explain)

GeForce 8800 GT 1GB		33600 Mtexels/sec
Radeon HD 5750 1GB		25200 Mtexels/sec
	Difference: 8400 (33%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon HD 5750 1GB is a better choice, though only just barely. (explain)

Radeon HD 5750 1GB		11200 Mpixels/sec
GeForce 8800 GT 1GB		9600 Mpixels/sec
	Difference: 1600 (17%)

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: Bandwidth is the maximum amount of information (in units of MB per second) that can be transferred past the external memory interface in one second. The number is worked out by multiplying the interface width by its memory speed. In the case of DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. 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 amount of texture map elements (texels) that are processed per second. This figure is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The better the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly write to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of 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 fill rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.