GeForce GT 320 vs Radeon HD 3650

Intro

Compare those specifications to the Radeon HD 3650, which comes with a core clock frequency of 725 MHz and a GDDR4 memory frequency of 800 MHz. It also makes use of a 128-bit memory bus, and uses a 55 nm design. It is made up of 120(24x5) SPUs, 8 TAUs, 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		78 Watts
	Difference: 35 Watts (81%)

Memory Bandwidth

Theoretically, the Radeon HD 3650 should perform a bit faster than the GeForce GT 320 overall. (explain)

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

Texel Rate

The GeForce GT 320 is much (about 123%) faster with regards to texture filtering than the Radeon HD 3650. (explain)

GeForce GT 320		12960 Mtexels/sec
Radeon HD 3650		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 far. (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: Bandwidth is the largest amount of information (in units of MB per second) that can be transferred across the external memory interface in one second. It is worked out by multiplying the interface width by the speed of its memory. If the card has DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed in one second. This figure is worked out by multiplying the total number of texture units by the core clock speed of the chip. The higher this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly record to the local memory per 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 called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill 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 get to the maximum fill rate.