GeForce GTX 460 (OEM) vs GeForce GTX 470

Intro

Compare those specifications to the GeForce GTX 470, which features GPU clock speed of 607 MHz, and 1280 MB of GDDR5 memory set to run at 837 MHz through a 320-bit bus. It also is comprised of 448 Stream Processors, 56 Texture Address Units, and 40 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 460 (OEM)		150 Watts
GeForce GTX 470		215 Watts
	Difference: 65 Watts (43%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 470 should theoretically be much superior to the GeForce GTX 460 (OEM) in general. (explain)

GeForce GTX 470		133920 MB/sec
GeForce GTX 460 (OEM)		108800 MB/sec
	Difference: 25120 (23%)

Texel Rate

The GeForce GTX 460 (OEM) will be a small bit (more or less 7%) more effective at anisotropic filtering than the GeForce GTX 470. (explain)

GeForce GTX 460 (OEM)		36400 Mtexels/sec
GeForce GTX 470		33992 Mtexels/sec
	Difference: 2408 (7%)

Pixel Rate

The GeForce GTX 470 should be a little bit (approximately 17%) better at FSAA than the GeForce GTX 460 (OEM), and capable of handling higher resolutions better. (explain)

GeForce GTX 470		24280 Mpixels/sec
GeForce GTX 460 (OEM)		20800 Mpixels/sec
	Difference: 3480 (17%)

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 largest amount of information (in units of MB per second) that can be transported past the external memory interface in one second. It is calculated by multiplying the card's bus width by its memory speed. If the card has DDR RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR 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 calculated by multiplying the total number of texture units by the core clock speed of the chip. The better the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

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