GeForce 8800 GTS (G80) 320MB vs GeForce GT 440 1.5GB

Intro

Compare those specifications to the GeForce GT 440 1.5GB, which comes with core speeds of 594 MHz on the GPU, and 900 MHz on the 1536 MB of GDDR3 memory. It features 144 SPUs along with 24 TAUs and 24 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 440 1.5GB		56 Watts
GeForce 8800 GTS (G80) 320MB		143 Watts
	Difference: 87 Watts (155%)

Memory Bandwidth

As far as performance goes, the GeForce 8800 GTS (G80) 320MB should theoretically be a lot better than the GeForce GT 440 1.5GB in general. (explain)

GeForce 8800 GTS (G80) 320MB		63360 MB/sec
GeForce GT 440 1.5GB		43200 MB/sec
	Difference: 20160 (47%)

Texel Rate

The GeForce 8800 GTS (G80) 320MB will be a lot (approximately 73%) more effective at AF than the GeForce GT 440 1.5GB. (explain)

GeForce 8800 GTS (G80) 320MB		24624 Mtexels/sec
GeForce GT 440 1.5GB		14256 Mtexels/sec
	Difference: 10368 (73%)

Pixel Rate

The GeForce GT 440 1.5GB should be much (about 39%) better at FSAA than the GeForce 8800 GTS (G80) 320MB, and should be able to handle higher screen resolutions more effectively. (explain)

GeForce GT 440 1.5GB		14256 Mpixels/sec
GeForce 8800 GTS (G80) 320MB		10260 Mpixels/sec
	Difference: 3996 (39%)

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 transferred across the external memory interface in a second. It is calculated by multiplying the card's bus width by the speed of its memory. In the case of DDR memory, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, 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 texture map elements (texels) that can be applied in one second. This is calculated by multiplying the total texture units of the card by the core speed of the chip. The higher this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. The figure is calculated 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 outputting the pixels (image) to the screen. The actual pixel rate also depends on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.