GeForce GT 320 vs Radeon HD 5670

Intro

Compare that to the Radeon HD 5670, which features a clock frequency of 775 MHz and a GDDR5 memory frequency of 1000 MHz. It also uses a 128-bit bus, and uses a 40 nm design. It is comprised of 400(80x5) SPUs, 20 TAUs, 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 much 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 is just a bit (more or less 20%) better at texture 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 using a high resolution is important to you, then the Radeon HD 5670 is superior to the GeForce GT 320, by far. (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: Bandwidth is the max amount of data (in units of megabytes per second) that can be moved across the external memory interface in one second. It is calculated by multiplying the bus width by its memory speed. If the card has DDR memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one 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 texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines by the the core clock speed. 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 lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.