GeForce GT 320 vs Radeon HD 3650

Intro

Compare all that to the Radeon HD 3650, which makes use of a 55 nm design. AMD has set the core speed at 725 MHz. The GDDR4 memory is set to run at a frequency of 800 MHz on this specific model. It features 120(24x5) SPUs as well as 8 Texture Address Units and 4 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 320		43 Watts
Radeon HD 3650		78 Watts
	Difference: 35 Watts (81%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 3650 is 1% quicker than the GeForce GT 320 in general, because of its greater bandwidth. (explain)

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

Texel Rate

The GeForce GT 320 is quite a bit (more or less 123%) better at AF than the Radeon HD 3650. (explain)

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

Pixel Rate

The GeForce GT 320 is much (about 49%) better at FSAA than the Radeon HD 3650, and also will be capable of handling higher resolutions more effectively. (explain)

GeForce GT 320		4320 Mpixels/sec
Radeon HD 3650		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 largest amount of information (measured in megabytes per second) that can be transferred across the external memory interface within a second. It is calculated by multiplying the card's interface width by its memory speed. If the card has DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, 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 texture map elements (texels) that can be processed 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 better this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly write 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 - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.