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

Intro

Compare those specs to the GeForce GTX 460 2GB, which makes use of a 40 nm design. nVidia has clocked the core frequency at 675 MHz. The GDDR5 RAM works at a speed of 900 MHz on this specific model. It features 336 SPUs along with 56 Texture Address Units and 32 Rasterization Operator Units.

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

As far as performance goes, the GeForce GTX 460 2GB should in theory be just a bit superior to 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 should be a little bit (approximately 4%) faster with regards to AF 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 will be a bit (approximately 4%) better at AA than the GeForce GTX 460 (OEM), and also able to handle higher resolutions more effectively. (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: Bandwidth is the maximum amount of data (counted in MB per second) that can be transported over the external memory interface in one second. It is calculated by multiplying the interface width by its memory clock speed. If it uses DDR RAM, it 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 anti-aliasing, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly record to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.