GeForce GTX 460 1GB vs Radeon HD 3650 256MB

Intro

Compare those specs to the Radeon HD 3650 256MB, which has a GPU core clock speed of 725 MHz, and 256 MB of DDR2 memory set to run at 800 MHz through a 128-bit bus. It also features 120(24x5) Stream Processors, 8 TAUs, and 4 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 3650 256MB		78 Watts
GeForce GTX 460 1GB		160 Watts
	Difference: 82 Watts (105%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 460 1GB will be 350% quicker than the Radeon HD 3650 256MB overall, because of its greater data rate. (explain)

GeForce GTX 460 1GB		115200 MB/sec
Radeon HD 3650 256MB		25600 MB/sec
	Difference: 89600 (350%)

Texel Rate

The GeForce GTX 460 1GB should be much (more or less 552%) better at anisotropic filtering than the Radeon HD 3650 256MB. (explain)

GeForce GTX 460 1GB		37800 Mtexels/sec
Radeon HD 3650 256MB		5800 Mtexels/sec
	Difference: 32000 (552%)

Pixel Rate

The GeForce GTX 460 1GB is quite a bit (more or less 645%) better at FSAA than the Radeon HD 3650 256MB, and able to handle higher screen resolutions without slowing down too much. (explain)

GeForce GTX 460 1GB		21600 Mpixels/sec
Radeon HD 3650 256MB		2900 Mpixels/sec
	Difference: 18700 (645%)

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 MB per second) that can be moved over the external memory interface in a second. It is worked out by multiplying the card's interface width by the speed of its memory. If the card has DDR memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the bandwidth is, 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 number of texture map elements (texels) that can be processed per second. This is worked out by multiplying the total amount of texture units by the core speed of the chip. The higher this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.