GeForce GT 320 vs GeForce GTX 480

Intro

Compare those specs to the GeForce GTX 480, which has clock speeds of 700 MHz on the GPU, and 924 MHz on the 1536 MB of GDDR5 RAM. It features 480 SPUs along with 60 Texture Address Units and 48 Rasterization Operator Units.

Display Graphs

Hide Graphs

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

Theoretically, the GeForce GTX 480 should perform a lot faster than 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 will be much (approximately 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%) better at anti-aliasing than the GeForce GT 320, and also should be able to handle higher resolutions while still performing well. (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 maximum amount of information (counted in MB per second) that can be transferred past the external memory interface within a second. It is worked out by multiplying the card's bus width by its memory clock speed. If the card has DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly record to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.