GeForce GT 320 vs GeForce GTX 460

Intro

Compare those specs to the GeForce GTX 460, which features a core clock frequency of 675 MHz and a GDDR5 memory speed of 900 MHz. It also uses a 192-bit memory bus, and makes use of a 40 nm design. It is comprised of 336 SPUs, 56 Texture Address Units, and 24 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 320		43 Watts
GeForce GTX 460		150 Watts
	Difference: 107 Watts (249%)

Memory Bandwidth

In theory, the GeForce GTX 460 will be 242% quicker than the GeForce GT 320 in general, because of its higher data rate. (explain)

GeForce GTX 460		86400 MB/sec
GeForce GT 320		25280 MB/sec
	Difference: 61120 (242%)

Texel Rate

The GeForce GTX 460 is much (about 192%) faster with regards to AF than the GeForce GT 320. (explain)

GeForce GTX 460		37800 Mtexels/sec
GeForce GT 320		12960 Mtexels/sec
	Difference: 24840 (192%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce GTX 460 is the winner, by far. (explain)

GeForce GTX 460		16200 Mpixels/sec
GeForce GT 320		4320 Mpixels/sec
	Difference: 11880 (275%)

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 (counted in MB per second) that can be transported over the external memory interface within a second. The number is worked out by multiplying the bus width by the speed of its memory. If it uses DDR RAM, it must be multiplied by 2 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, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This number 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 graphics card will be at 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 graphics card can possibly write to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the clock speed of the card. 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 output rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.