GeForce GT 320 vs Radeon HD 3650 512MB

Intro

Compare all of that to the Radeon HD 3650 512MB, which comes with core speeds of 725 MHz on the GPU, and 800 MHz on the 512 MB of GDDR3 memory. It features 120(24x5) SPUs as well as 8 Texture Address Units and 4 ROPs.

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

Performance-wise, the Radeon HD 3650 512MB should in theory be a bit better than the GeForce GT 320 in general. (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 (more or less 123%) better at texture filtering 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

The GeForce GT 320 should be much (about 49%) faster with regards to full screen anti-aliasing than the Radeon HD 3650 512MB, and capable of handling higher resolutions better. (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 largest amount of information (in units of megabytes per second) that can be transferred across the external memory interface within a second. It's worked out by multiplying the card's interface width by the speed of its memory. If the card has DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR 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 of the card by the core clock speed of the chip. The higher the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly write to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. 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, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.