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

Intro

Compare all of that to the Radeon HD 5750 512MB, which features a GPU core clock speed of 700 MHz, and 512 MB of GDDR5 RAM running at 1150 MHz through a 128-bit bus. It also features 720(144x5) Stream Processors, 36 TAUs, 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

Performance-wise, the Radeon HD 5750 512MB should in theory be a little bit superior to 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 a little bit (more or less 2%) better 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 should be a bit (about 9%) faster with regards to full screen anti-aliasing than the GeForce 8800 GTS (G80) 320MB, and also should be able to handle higher resolutions while still performing well. (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 (in units of MB per second) that can be transferred over the external memory interface within a second. It's worked out by multiplying the interface width by the speed of its memory. If it uses DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the card's 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 texture map elements (texels) that are processed in one second. This number is calculated by multiplying the total amount of texture units 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 applied in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly record to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.