GeForce GTX 460 2GB vs GeForce GTX 470

Intro

Compare that to the GeForce GTX 470, which uses a 40 nm design. nVidia has set the core speed at 607 MHz. The GDDR5 memory works at a frequency of 837 MHz on this card. It features 448 SPUs along with 56 TAUs and 40 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 460 2GB		160 Watts
GeForce GTX 470		215 Watts
	Difference: 55 Watts (34%)

Memory Bandwidth

In theory, the GeForce GTX 470 should be a bit faster than the GeForce GTX 460 2GB in general. (explain)

GeForce GTX 470		133920 MB/sec
GeForce GTX 460 2GB		115200 MB/sec
	Difference: 18720 (16%)

Texel Rate

The GeForce GTX 460 2GB will be a small bit (about 11%) more effective at texture filtering than the GeForce GTX 470. (explain)

GeForce GTX 460 2GB		37800 Mtexels/sec
GeForce GTX 470		33992 Mtexels/sec
	Difference: 3808 (11%)

Pixel Rate

The GeForce GTX 470 is just a bit (more or less 12%) better at anti-aliasing than the GeForce GTX 460 2GB, and able to handle higher screen resolutions more effectively. (explain)

GeForce GTX 470		24280 Mpixels/sec
GeForce GTX 460 2GB		21600 Mpixels/sec
	Difference: 2680 (12%)

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 moved over the external memory interface within a second. It is worked out by multiplying the card's interface width by its memory clock speed. If it uses DDR RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.