GeForce GTX 460 2GB vs Geforce GTX 670

Intro

Compare those specifications to the Geforce GTX 670, which comes with GPU clock speed of 915 MHz, and 2048 MB of GDDR5 memory running at 1500 MHz through a 256-bit bus. It also is comprised of 1344 Stream Processors, 112 Texture Address Units, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 460 2GB		160 Watts
Geforce GTX 670		170 Watts
	Difference: 10 Watts (6%)

Memory Bandwidth

Theoretically speaking, the Geforce GTX 670 will be 67% quicker than the GeForce GTX 460 2GB overall, due to its greater data rate. (explain)

Geforce GTX 670		192000 MB/sec
GeForce GTX 460 2GB		115200 MB/sec
	Difference: 76800 (67%)

Texel Rate

The Geforce GTX 670 is quite a bit (approximately 171%) faster with regards to texture filtering than the GeForce GTX 460 2GB. (explain)

Geforce GTX 670		102480 Mtexels/sec
GeForce GTX 460 2GB		37800 Mtexels/sec
	Difference: 64680 (171%)

Pixel Rate

If using a high resolution is important to you, then the Geforce GTX 670 is the winner, and very much so. (explain)

Geforce GTX 670		29280 Mpixels/sec
GeForce GTX 460 2GB		21600 Mpixels/sec
	Difference: 7680 (36%)

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 max amount of data (counted in MB per second) that can be transported past the external memory interface in one second. The number is worked out by multiplying the interface width by its memory clock speed. If the card has DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed in one second. This is worked out by multiplying the total texture units of the card 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 one second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.