GeForce GTX 460 2GB vs Radeon HD 3650 512MB

Intro

Compare all of that to the Radeon HD 3650 512MB, which comes with a core clock frequency of 725 MHz and a GDDR3 memory frequency of 800 MHz. It also features a 128-bit memory bus, and makes use of a 55 nm design. It features 120(24x5) SPUs, 8 Texture Address Units, and 4 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 3650 512MB		78 Watts
GeForce GTX 460 2GB		160 Watts
	Difference: 82 Watts (105%)

Memory Bandwidth

In theory, the GeForce GTX 460 2GB should be 350% faster than the Radeon HD 3650 512MB overall, due to its greater data rate. (explain)

GeForce GTX 460 2GB		115200 MB/sec
Radeon HD 3650 512MB		25600 MB/sec
	Difference: 89600 (350%)

Texel Rate

The GeForce GTX 460 2GB will be much (more or less 552%) better at anisotropic filtering than the Radeon HD 3650 512MB. (explain)

GeForce GTX 460 2GB		37800 Mtexels/sec
Radeon HD 3650 512MB		5800 Mtexels/sec
	Difference: 32000 (552%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce GTX 460 2GB is the winner, by far. (explain)

GeForce GTX 460 2GB		21600 Mpixels/sec
Radeon HD 3650 512MB		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 largest amount of information (measured in MB per second) that can be transferred over the external memory interface in one second. The number is worked out by multiplying the interface width by its memory clock speed. In the case of DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied in one second. This figure is worked out by multiplying the total amount of texture units by the core speed of the chip. The higher the texel rate, 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 most pixels that the graphics chip can possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.