GeForce 8800 GTX vs GeForce GT 320

Intro

Compare those specs to the GeForce GT 320, which features core clock speeds of 540 MHz on the GPU, and 790 MHz on the 1024 MB of GDDR3 memory. It features 72 SPUs as well as 24 Texture Address Units and 8 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 320		43 Watts
GeForce 8800 GTX		155 Watts
	Difference: 112 Watts (260%)

Memory Bandwidth

As far as performance goes, the GeForce 8800 GTX should theoretically be much superior to the GeForce GT 320 overall. (explain)

GeForce 8800 GTX		86400 MB/sec
GeForce GT 320		25280 MB/sec
	Difference: 61120 (242%)

Texel Rate

The GeForce 8800 GTX is a lot (about 184%) more effective at texture filtering than the GeForce GT 320. (explain)

GeForce 8800 GTX		36800 Mtexels/sec
GeForce GT 320		12960 Mtexels/sec
	Difference: 23840 (184%)

Pixel Rate

The GeForce 8800 GTX should be much (approximately 219%) better at AA than the GeForce GT 320, and also capable of handling higher screen resolutions more effectively. (explain)

GeForce 8800 GTX		13800 Mpixels/sec
GeForce GT 320		4320 Mpixels/sec
	Difference: 9480 (219%)

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 (counted in megabytes per second) that can be transported past the external memory interface in a second. The number is calculated by multiplying the interface width by the speed of its memory. If the card has DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. 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 texture map elements (texels) that can be processed per second. This is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly record to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.