GeForce GT 320 vs Radeon HD 3650 512MB

Intro

Compare those specifications to the Radeon HD 3650 512MB, which features clock speeds of 725 MHz on the GPU, and 800 MHz on the 512 MB of GDDR3 RAM. It features 120(24x5) SPUs along with 8 Texture Address Units and 4 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 3650 512MB		78 Watts
	Difference: 35 Watts (81%)

Memory Bandwidth

The Radeon HD 3650 512MB, in theory, should perform just a bit faster than the GeForce GT 320 overall. (explain)

Radeon HD 3650 512MB		25600 MB/sec
GeForce GT 320		25280 MB/sec
	Difference: 320 (1%)

Texel Rate

The GeForce GT 320 should be quite a bit (approximately 123%) faster with regards to AF than the Radeon HD 3650 512MB. (explain)

GeForce GT 320		12960 Mtexels/sec
Radeon HD 3650 512MB		5800 Mtexels/sec
	Difference: 7160 (123%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GT 320 is a better choice, by a large margin. (explain)

GeForce GT 320		4320 Mpixels/sec
Radeon HD 3650 512MB		2900 Mpixels/sec
	Difference: 1420 (49%)

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 maximum amount of information (in units of megabytes per second) that can be transported over the external memory interface in one second. It is worked out by multiplying the interface width by its memory clock speed. If the card has DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied per second. This number is calculated by multiplying the total texture units of the card by the core clock 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 processed per second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.