GeForce GT 320 vs Radeon HD 5670

Intro

Compare those specifications to the Radeon HD 5670, which has clock speeds of 775 MHz on the GPU, and 1000 MHz on the 1024 MB of GDDR5 RAM. It features 400(80x5) SPUs along with 20 Texture Address Units and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 320		43 Watts
Radeon HD 5670		61 Watts
	Difference: 18 Watts (42%)

Memory Bandwidth

Performance-wise, the Radeon HD 5670 should in theory be a lot superior to the GeForce GT 320 in general. (explain)

Radeon HD 5670		64000 MB/sec
GeForce GT 320		25280 MB/sec
	Difference: 38720 (153%)

Texel Rate

The Radeon HD 5670 will be a little bit (more or less 20%) more effective at anisotropic filtering than the GeForce GT 320. (explain)

Radeon HD 5670		15500 Mtexels/sec
GeForce GT 320		12960 Mtexels/sec
	Difference: 2540 (20%)

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon HD 5670 is a better choice, by a large margin. (explain)

Radeon HD 5670		6200 Mpixels/sec
GeForce GT 320		4320 Mpixels/sec
	Difference: 1880 (44%)

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

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This number is calculated by multiplying the total number of texture units by the core clock speed of the chip. The better the texel rate, the better the video card will be at handling 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 that the graphics card can possibly write to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). 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 potential to reach the maximum fill rate.