GeForce GTX 460 (OEM) vs GeForce GTX 460 2GB

Intro

Compare all of that to the GeForce GTX 460 2GB, which features GPU core speed of 675 MHz, and 2048 MB of GDDR5 memory running at 900 MHz through a 256-bit bus. It also is comprised of 336 Stream Processors, 56 Texture Address Units, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 460 (OEM)		150 Watts
GeForce GTX 460 2GB		160 Watts
	Difference: 10 Watts (7%)

Memory Bandwidth

Performance-wise, the GeForce GTX 460 2GB should in theory be a small bit better than the GeForce GTX 460 (OEM) in general. (explain)

GeForce GTX 460 2GB		115200 MB/sec
GeForce GTX 460 (OEM)		108800 MB/sec
	Difference: 6400 (6%)

Texel Rate

The GeForce GTX 460 2GB will be a little bit (more or less 4%) more effective at anisotropic filtering than the GeForce GTX 460 (OEM). (explain)

GeForce GTX 460 2GB		37800 Mtexels/sec
GeForce GTX 460 (OEM)		36400 Mtexels/sec
	Difference: 1400 (4%)

Pixel Rate

The GeForce GTX 460 2GB should be just a bit (more or less 4%) faster with regards to FSAA than the GeForce GTX 460 (OEM), and capable of handling higher resolutions without slowing down too much. (explain)

GeForce GTX 460 2GB		21600 Mpixels/sec
GeForce GTX 460 (OEM)		20800 Mpixels/sec
	Difference: 800 (4%)

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 maximum amount of information (in units of MB per second) that can be transferred over the external memory interface in a second. It is calculated by multiplying the bus width by its memory speed. If it uses DDR type memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, 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 can be applied per 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 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 maximum amount of pixels the video card could possibly record to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.