GeForce GT 320 vs GeForce GTX 460

Intro

Compare all that to the GeForce GTX 460, which comes with clock speeds of 675 MHz on the GPU, and 900 MHz on the 768 MB of GDDR5 memory. It features 336 SPUs as well as 56 Texture Address Units and 24 ROPs.

Display Graphs

Hide Graphs

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

Theoretically, the GeForce GTX 460 should perform much faster than the GeForce GT 320 overall. (explain)

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

Texel Rate

The GeForce GTX 460 should be much (approximately 192%) more effective at texture filtering than the GeForce GT 320. (explain)

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

Pixel Rate

The GeForce GTX 460 is quite a bit (more or less 275%) faster with regards to full screen anti-aliasing than the GeForce GT 320, and should be capable of handling higher screen resolutions more effectively. (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: Memory bandwidth is the max amount of information (measured in MB per second) that can be moved past the external memory interface within a second. It's calculated by multiplying the bus width by its memory speed. If it uses DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the bandwidth is, 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 amount of texture map elements (texels) that are processed per second. This is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The higher the texel rate, the better the card will be at 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 chip could possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.