GeForce 8800 GT 512MB vs Radeon HD 5750 1GB

Intro

Compare those specifications to the Radeon HD 5750 1GB, which features a core clock speed of 700 MHz and a GDDR5 memory speed of 1150 MHz. It also uses a 128-bit memory bus, and makes use of a 40 nm design. It is made up of 720(144x5) SPUs, 36 TAUs, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5750 1GB		86 Watts
GeForce 8800 GT 512MB		105 Watts
	Difference: 19 Watts (22%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 5750 1GB should be 28% faster than the GeForce 8800 GT 512MB overall, because of its greater bandwidth. (explain)

Radeon HD 5750 1GB		73600 MB/sec
GeForce 8800 GT 512MB		57600 MB/sec
	Difference: 16000 (28%)

Texel Rate

The GeForce 8800 GT 512MB should be much (more or less 33%) more effective at anisotropic filtering than the Radeon HD 5750 1GB. (explain)

GeForce 8800 GT 512MB		33600 Mtexels/sec
Radeon HD 5750 1GB		25200 Mtexels/sec
	Difference: 8400 (33%)

Pixel Rate

The Radeon HD 5750 1GB will be a little bit (approximately 17%) more effective at anti-aliasing than the GeForce 8800 GT 512MB, and also able to handle higher screen resolutions while still performing well. (explain)

Radeon HD 5750 1GB		11200 Mpixels/sec
GeForce 8800 GT 512MB		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 data (counted in MB per second) that can be transferred past the external memory interface in one second. It is calculated by multiplying the interface width by the speed of its memory. If it uses DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the better 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 amount of texture map elements (texels) that are processed in one second. This number is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly record to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.