GeForce GT 240 GDDR5 1GB vs Radeon HD 3650

Intro

Compare those specifications to the Radeon HD 3650, which features core clock speeds of 725 MHz on the GPU, and 800 MHz on the 1024 MB of GDDR4 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 240 GDDR5 1GB		70 Watts
Radeon HD 3650		78 Watts
	Difference: 8 Watts (11%)

Memory Bandwidth

In theory, the GeForce GT 240 GDDR5 1GB is 113% quicker than the Radeon HD 3650 in general, due to its higher bandwidth. (explain)

GeForce GT 240 GDDR5 1GB		54400 MB/sec
Radeon HD 3650		25600 MB/sec
	Difference: 28800 (113%)

Texel Rate

The GeForce GT 240 GDDR5 1GB is much (more or less 203%) better at anisotropic filtering than the Radeon HD 3650. (explain)

GeForce GT 240 GDDR5 1GB		17600 Mtexels/sec
Radeon HD 3650		5800 Mtexels/sec
	Difference: 11800 (203%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce GT 240 GDDR5 1GB is superior to the Radeon HD 3650, and very much so. (explain)

GeForce GT 240 GDDR5 1GB		4400 Mpixels/sec
Radeon HD 3650		2900 Mpixels/sec
	Difference: 1500 (52%)

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 max amount of data (measured in MB per second) that can be transported over the external memory interface in one second. It's calculated by multiplying the card's bus width by the speed of its memory. If it uses DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster 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 are processed per second. This is worked out by multiplying the total number of texture units by the core speed of the chip. The better the texel rate, the better the graphics 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 most pixels the video card could possibly record to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the the core clock speed. 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 also depends on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.