GeForce 8800 Ultra vs GeForce GT 320

Intro

Compare all of that to the GeForce GT 320, which features a GPU core clock speed of 540 MHz, and 1024 MB of GDDR3 memory set to run at 790 MHz through a 128-bit bus. It also features 72 Stream Processors, 24 Texture Address Units, and 8 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 320		43 Watts
GeForce 8800 Ultra		171 Watts
	Difference: 128 Watts (298%)

Memory Bandwidth

In theory, the GeForce 8800 Ultra will be 310% quicker than the GeForce GT 320 in general, because of its greater data rate. (explain)

GeForce 8800 Ultra		103680 MB/sec
GeForce GT 320		25280 MB/sec
	Difference: 78400 (310%)

Texel Rate

The GeForce 8800 Ultra will be a lot (more or less 202%) more effective at anisotropic filtering than the GeForce GT 320. (explain)

GeForce 8800 Ultra		39168 Mtexels/sec
GeForce GT 320		12960 Mtexels/sec
	Difference: 26208 (202%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce 8800 Ultra is superior to the GeForce GT 320, by far. (explain)

GeForce 8800 Ultra		14688 Mpixels/sec
GeForce GT 320		4320 Mpixels/sec
	Difference: 10368 (240%)

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 data (counted in MB per second) that can be transported over the external memory interface in a second. It's calculated by multiplying the card's bus width by the speed of its memory. If it uses DDR type RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This number is worked out by multiplying the total amount 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 a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip 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 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 rate also depends on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.