GeForce 8800 GTX vs Radeon HD 5750 512MB

Intro

Compare that to the Radeon HD 5750 512MB, which comes with core clock speeds of 700 MHz on the GPU, and 1150 MHz on the 512 MB of GDDR5 RAM. It features 720(144x5) SPUs along with 36 TAUs and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5750 512MB		86 Watts
GeForce 8800 GTX		155 Watts
	Difference: 69 Watts (80%)

Memory Bandwidth

Performance-wise, the GeForce 8800 GTX should theoretically be a bit superior to the Radeon HD 5750 512MB in general. (explain)

GeForce 8800 GTX		86400 MB/sec
Radeon HD 5750 512MB		73600 MB/sec
	Difference: 12800 (17%)

Texel Rate

The GeForce 8800 GTX is much (approximately 46%) better at AF than the Radeon HD 5750 512MB. (explain)

GeForce 8800 GTX		36800 Mtexels/sec
Radeon HD 5750 512MB		25200 Mtexels/sec
	Difference: 11600 (46%)

Pixel Rate

The GeForce 8800 GTX should be a lot (approximately 23%) better at AA than the Radeon HD 5750 512MB, and will be capable of handling higher resolutions without slowing down too much. (explain)

GeForce 8800 GTX		13800 Mpixels/sec
Radeon HD 5750 512MB		11200 Mpixels/sec
	Difference: 2600 (23%)

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 max amount of data (counted in megabytes per second) that can be moved past the external memory interface within a second. The number is worked out by multiplying the bus width by its memory clock speed. If the card has DDR memory, it must be multiplied by 2 once 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 anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied in one second. This 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 applied in a second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.