GeForce 8800 GTS (G80) 320MB vs Radeon HD 5750 512MB

Intro

Compare all of that to the Radeon HD 5750 512MB, which makes use of a 40 nm design. AMD has set the core frequency at 700 MHz. The GDDR5 RAM is set to run at a speed of 1150 MHz on this particular model. It features 720(144x5) SPUs as well as 36 Texture Address Units and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5750 512MB		86 Watts
GeForce 8800 GTS (G80) 320MB		143 Watts
	Difference: 57 Watts (66%)

Memory Bandwidth

Theoretically, the Radeon HD 5750 512MB should be a bit faster than the GeForce 8800 GTS (G80) 320MB in general. (explain)

Radeon HD 5750 512MB		73600 MB/sec
GeForce 8800 GTS (G80) 320MB		63360 MB/sec
	Difference: 10240 (16%)

Texel Rate

The Radeon HD 5750 512MB is just a bit (about 2%) more effective at AF than the GeForce 8800 GTS (G80) 320MB. (explain)

Radeon HD 5750 512MB		25200 Mtexels/sec
GeForce 8800 GTS (G80) 320MB		24624 Mtexels/sec
	Difference: 576 (2%)

Pixel Rate

The Radeon HD 5750 512MB will be a small bit (approximately 9%) better at FSAA than the GeForce 8800 GTS (G80) 320MB, and also able to handle higher resolutions without losing too much performance. (explain)

Radeon HD 5750 512MB		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: Bandwidth is the maximum amount of data (counted in MB per second) that can be moved across the external memory interface in a second. The number is worked out by multiplying the bus width by its memory speed. If the card has DDR memory, it should be multiplied by 2 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, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied per second. This number is worked out by multiplying the total texture units of the card by the core clock 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 in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Raster Operations Pipelines by the the card's 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 is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.