GeForce GT 320 vs GeForce GTX 460 SE

Intro

Compare those specifications to the GeForce GTX 460 SE, which comes with a GPU core clock speed of 650 MHz, and 1024 MB of GDDR5 RAM set to run at 850 MHz through a 256-bit bus. It also is made up of 288 SPUs, 48 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 SE		150 Watts
	Difference: 107 Watts (249%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 460 SE will be 330% quicker than the GeForce GT 320 overall, due to its greater bandwidth. (explain)

GeForce GTX 460 SE		108800 MB/sec
GeForce GT 320		25280 MB/sec
	Difference: 83520 (330%)

Texel Rate

The GeForce GTX 460 SE should be a lot (approximately 141%) better at AF than the GeForce GT 320. (explain)

GeForce GTX 460 SE		31200 Mtexels/sec
GeForce GT 320		12960 Mtexels/sec
	Difference: 18240 (141%)

Pixel Rate

The GeForce GTX 460 SE is quite a bit (approximately 381%) more effective at full screen anti-aliasing than the GeForce GT 320, and also will be capable of handling higher resolutions more effectively. (explain)

GeForce GTX 460 SE		20800 Mpixels/sec
GeForce GT 320		4320 Mpixels/sec
	Difference: 16480 (381%)

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 max amount of information (counted in megabytes per second) that can be transported past the external memory interface in one second. The number is calculated by multiplying the bus width by its memory speed. If it uses DDR type RAM, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.