GeForce GTX 460 (OEM) vs Radeon HD 3650

Intro

Compare all of that to the Radeon HD 3650, which has GPU core speed of 725 MHz, and 1024 MB of GDDR4 RAM set to run at 800 MHz through a 128-bit bus. It also is comprised of 120(24x5) SPUs, 8 Texture Address Units, and 4 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

The GeForce GTX 460 (OEM), in theory, should be much faster than the Radeon HD 3650 overall. (explain)

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

Texel Rate

The GeForce GTX 460 (OEM) is much (about 528%) faster with regards to AF than the Radeon HD 3650. (explain)

GeForce GTX 460 (OEM)		36400 Mtexels/sec
Radeon HD 3650		5800 Mtexels/sec
	Difference: 30600 (528%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the GeForce GTX 460 (OEM) is the winner, and very much so. (explain)

GeForce GTX 460 (OEM)		20800 Mpixels/sec
Radeon HD 3650		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: Bandwidth is the max amount of data (in units of megabytes per second) that can be transferred past the external memory interface in a second. It's calculated by multiplying the card's bus width by its memory clock 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 card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied 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 processed per second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly record to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.