GeForce GTX 480 vs Radeon HD 5750 512MB

Intro

Compare all of that to the Radeon HD 5750 512MB, which has a clock speed of 700 MHz and a GDDR5 memory speed of 1150 MHz. It also features a 128-bit bus, and uses a 40 nm design. It is comprised 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 512MB		86 Watts
GeForce GTX 480		250 Watts
	Difference: 164 Watts (191%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 480 will be 141% quicker than the Radeon HD 5750 512MB in general, due to its greater data rate. (explain)

GeForce GTX 480		177408 MB/sec
Radeon HD 5750 512MB		73600 MB/sec
	Difference: 103808 (141%)

Texel Rate

The GeForce GTX 480 is much (approximately 67%) faster with regards to anisotropic filtering than the Radeon HD 5750 512MB. (explain)

GeForce GTX 480		42000 Mtexels/sec
Radeon HD 5750 512MB		25200 Mtexels/sec
	Difference: 16800 (67%)

Pixel Rate

The GeForce GTX 480 will be a lot (about 200%) better at anti-aliasing than the Radeon HD 5750 512MB, and also capable of handling higher screen resolutions better. (explain)

GeForce GTX 480		33600 Mpixels/sec
Radeon HD 5750 512MB		11200 Mpixels/sec
	Difference: 22400 (200%)

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 (counted in MB per second) that can be moved past the external memory interface in one second. It is calculated by multiplying the card's interface width by its memory clock speed. In the case of DDR RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, 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 amount of texture map elements (texels) that are processed per second. This number is calculated by multiplying the total amount of texture units of the card by the core speed of the chip. The higher this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.