GeForce GT 320 vs Radeon HD 5750 512MB

Intro

Compare those specifications to the Radeon HD 5750 512MB, which comes with a GPU core clock speed of 700 MHz, and 512 MB of GDDR5 memory set to run at 1150 MHz through a 128-bit bus. It also is comprised of 720(144x5) SPUs, 36 TAUs, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 320		43 Watts
Radeon HD 5750 512MB		86 Watts
	Difference: 43 Watts (100%)

Memory Bandwidth

Theoretically, the Radeon HD 5750 512MB should be much faster than the GeForce GT 320 in general. (explain)

Radeon HD 5750 512MB		73600 MB/sec
GeForce GT 320		25280 MB/sec
	Difference: 48320 (191%)

Texel Rate

The Radeon HD 5750 512MB should be a lot (approximately 94%) faster with regards to anisotropic filtering than the GeForce GT 320. (explain)

Radeon HD 5750 512MB		25200 Mtexels/sec
GeForce GT 320		12960 Mtexels/sec
	Difference: 12240 (94%)

Pixel Rate

If using a high screen resolution is important to you, then the Radeon HD 5750 512MB is the winner, and very much so. (explain)

Radeon HD 5750 512MB		11200 Mpixels/sec
GeForce GT 320		4320 Mpixels/sec
	Difference: 6880 (159%)

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 largest amount of data (counted in MB per second) that can be transferred past the external memory interface in a second. It is worked out by multiplying the card's interface width by its memory clock speed. In the case of DDR type memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The higher this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output 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 reach the maximum fill rate.