GeForce GTX 460 SE vs Radeon HD 3650 256MB

Intro

Compare those specs to the Radeon HD 3650 256MB, which has GPU core speed of 725 MHz, and 256 MB of DDR2 memory running at 800 MHz through a 128-bit bus. It also is comprised of 120(24x5) SPUs, 8 TAUs, and 4 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 3650 256MB		78 Watts
GeForce GTX 460 SE		150 Watts
	Difference: 72 Watts (92%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 460 SE should in theory be much better than the Radeon HD 3650 256MB in general. (explain)

GeForce GTX 460 SE		108800 MB/sec
Radeon HD 3650 256MB		25600 MB/sec
	Difference: 83200 (325%)

Texel Rate

The GeForce GTX 460 SE will be a lot (more or less 438%) faster with regards to texture filtering than the Radeon HD 3650 256MB. (explain)

GeForce GTX 460 SE		31200 Mtexels/sec
Radeon HD 3650 256MB		5800 Mtexels/sec
	Difference: 25400 (438%)

Pixel Rate

The GeForce GTX 460 SE should be a lot (approximately 617%) better at anti-aliasing than the Radeon HD 3650 256MB, and capable of handling higher screen resolutions more effectively. (explain)

GeForce GTX 460 SE		20800 Mpixels/sec
Radeon HD 3650 256MB		2900 Mpixels/sec
	Difference: 17900 (617%)

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 transported past the external memory interface in a second. It's worked out by multiplying the interface width by its memory clock speed. If the card has DDR RAM, it 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, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The better the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum amount of 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 colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.