GeForce 8800 Ultra vs GeForce GT 320

Intro

Compare all of that to the GeForce GT 320, which features a core clock speed of 540 MHz and a GDDR3 memory speed of 790 MHz. It also features a 128-bit bus, and uses a 40 nm design. It features 72 SPUs, 24 TAUs, and 8 ROPs.

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 is 310% faster than the GeForce GT 320 in general, due to 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 should be much (more or less 202%) faster with regards to 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 a high resolution is important to you, then the GeForce 8800 Ultra is the winner, and very much so. (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 maximum amount of data (measured in MB per second) that can be transported over the external memory interface in a second. The number is worked out by multiplying the card's interface width by its memory clock speed. If the card has DDR RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied in one second. This is calculated by multiplying the total amount of texture units by the core speed of the chip. The better this number, the better the graphics 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 amount of pixels that the graphics chip could possibly write to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. 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 many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.