GeForce GT 320 vs GeForce GTX 480

Intro

Compare those specifications to the GeForce GTX 480, which comes with GPU core speed of 700 MHz, and 1536 MB of GDDR5 memory running at 924 MHz through a 384-bit bus. It also is comprised of 480 SPUs, 60 Texture Address Units, and 48 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 320		43 Watts
GeForce GTX 480		250 Watts
	Difference: 207 Watts (481%)

Memory Bandwidth

Performance-wise, the GeForce GTX 480 should in theory be a lot superior to the GeForce GT 320 overall. (explain)

GeForce GTX 480		177408 MB/sec
GeForce GT 320		25280 MB/sec
	Difference: 152128 (602%)

Texel Rate

The GeForce GTX 480 should be quite a bit (about 224%) more effective at AF than the GeForce GT 320. (explain)

GeForce GTX 480		42000 Mtexels/sec
GeForce GT 320		12960 Mtexels/sec
	Difference: 29040 (224%)

Pixel Rate

The GeForce GTX 480 should be quite a bit (more or less 678%) more effective at AA than the GeForce GT 320, and should be able to handle higher screen resolutions more effectively. (explain)

GeForce GTX 480		33600 Mpixels/sec
GeForce GT 320		4320 Mpixels/sec
	Difference: 29280 (678%)

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 (in units of megabytes per second) that can be transported over the external memory interface within a second. It's worked out by multiplying the interface width by the speed of its memory. In the case of DDR RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, 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 are processed in one second. This number is calculated by multiplying the total number of texture units by the core speed of the chip. The better the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly write to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of ROPs by the the core 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 output rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.