GeForce GT 320 vs Radeon HD 5830

Intro

Compare those specs to the Radeon HD 5830, which features a GPU core clock speed of 800 MHz, and 1024 MB of GDDR5 RAM set to run at 1000 MHz through a 256-bit bus. It also features 1120(224x5) Stream Processors, 56 Texture Address Units, 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 5830		175 Watts
	Difference: 132 Watts (307%)

Memory Bandwidth

Performance-wise, the Radeon HD 5830 should in theory be quite a bit better than the GeForce GT 320 in general. (explain)

Radeon HD 5830		128000 MB/sec
GeForce GT 320		25280 MB/sec
	Difference: 102720 (406%)

Texel Rate

The Radeon HD 5830 will be much (more or less 246%) faster with regards to AF than the GeForce GT 320. (explain)

Radeon HD 5830		44800 Mtexels/sec
GeForce GT 320		12960 Mtexels/sec
	Difference: 31840 (246%)

Pixel Rate

If using a high screen resolution is important to you, then the Radeon HD 5830 is a better choice, by a large margin. (explain)

Radeon HD 5830		12800 Mpixels/sec
GeForce GT 320		4320 Mpixels/sec
	Difference: 8480 (196%)

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 information (counted in MB per second) that can be transferred past the external memory interface in one second. It's worked out by multiplying the card's bus width by its memory clock speed. If the card has DDR type memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, 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 processed in one second. This number is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The higher 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 most pixels that the graphics chip could possibly write to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines 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 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 get to the maximum fill rate.