GeForce GT 320 vs Radeon HD 7950

Intro

Compare that to the Radeon HD 7950, which features core speeds of 800 MHz on the GPU, and 1250 MHz on the 1536 MB of GDDR5 memory. It features 1792 SPUs as well as 112 Texture Address Units and 32 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 320		43 Watts
Radeon HD 7950		200 Watts
	Difference: 157 Watts (365%)

Memory Bandwidth

As far as performance goes, the Radeon HD 7950 should theoretically be a lot better than the GeForce GT 320 in general. (explain)

Radeon HD 7950		240000 MB/sec
GeForce GT 320		25280 MB/sec
	Difference: 214720 (849%)

Texel Rate

The Radeon HD 7950 should be a lot (about 591%) faster with regards to AF than the GeForce GT 320. (explain)

Radeon HD 7950		89600 Mtexels/sec
GeForce GT 320		12960 Mtexels/sec
	Difference: 76640 (591%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon HD 7950 is the winner, by a large margin. (explain)

Radeon HD 7950		25600 Mpixels/sec
GeForce GT 320		4320 Mpixels/sec
	Difference: 21280 (493%)

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 information (measured in megabytes per second) that can be transported past the external memory interface within a second. The number is worked out by multiplying the interface width by the speed of its memory. If the card has DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most 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 number of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.