GeForce GT 320 vs GeForce GTX 460 2GB

Intro

Compare those specs to the GeForce GTX 460 2GB, which features a core clock frequency of 675 MHz and a GDDR5 memory frequency of 900 MHz. It also features a 256-bit bus, and makes use of a 40 nm design. It is made up of 336 SPUs, 56 TAUs, and 32 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 2GB		160 Watts
	Difference: 117 Watts (272%)

Memory Bandwidth

Theoretically, the GeForce GTX 460 2GB should be a lot faster than the GeForce GT 320 in general. (explain)

GeForce GTX 460 2GB		115200 MB/sec
GeForce GT 320		25280 MB/sec
	Difference: 89920 (356%)

Texel Rate

The GeForce GTX 460 2GB should be much (approximately 192%) better at AF than the GeForce GT 320. (explain)

GeForce GTX 460 2GB		37800 Mtexels/sec
GeForce GT 320		12960 Mtexels/sec
	Difference: 24840 (192%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce GTX 460 2GB is superior to the GeForce GT 320, and very much so. (explain)

GeForce GTX 460 2GB		21600 Mpixels/sec
GeForce GT 320		4320 Mpixels/sec
	Difference: 17280 (400%)

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 maximum amount of information (counted in megabytes per second) that can be transferred over the external memory interface in one second. It is worked out by multiplying the bus width by its memory speed. If it uses DDR memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly write to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of ROPs by the the core 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 is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.