GeForce GT 320 vs Radeon HD 7950

Intro

Compare those specs 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 TAUs 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

The Radeon HD 7950 should theoretically perform much faster 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 will be much (approximately 591%) faster with regards to anisotropic filtering than the GeForce GT 320. (explain)

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

Pixel Rate

The Radeon HD 7950 should be quite a bit (more or less 493%) better at anti-aliasing than the GeForce GT 320, and also should be able to handle higher screen resolutions while still performing well. (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: Bandwidth is the max amount of data (measured in megabytes per second) that can be transported across the external memory interface in a second. It is worked out by multiplying the card's interface width by its memory speed. If the card has DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, 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 worked out by multiplying the total amount of texture units by the core clock speed of the chip. The better this number, the better the card will be at handling 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 chip can possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.