GeForce 8800 Ultra vs GeForce GT 440 1.5GB

Intro

Compare those specs to the GeForce GT 440 1.5GB, which has GPU clock speed of 594 MHz, and 1536 MB of GDDR3 memory set to run at 900 MHz through a 192-bit bus. It also features 144 Stream Processors, 24 TAUs, and 24 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 440 1.5GB		56 Watts
GeForce 8800 Ultra		171 Watts
	Difference: 115 Watts (205%)

Memory Bandwidth

The GeForce 8800 Ultra should in theory perform quite a bit faster than the GeForce GT 440 1.5GB in general. (explain)

GeForce 8800 Ultra		103680 MB/sec
GeForce GT 440 1.5GB		43200 MB/sec
	Difference: 60480 (140%)

Texel Rate

The GeForce 8800 Ultra should be much (more or less 175%) better at AF than the GeForce GT 440 1.5GB. (explain)

GeForce 8800 Ultra		39168 Mtexels/sec
GeForce GT 440 1.5GB		14256 Mtexels/sec
	Difference: 24912 (175%)

Pixel Rate

The GeForce 8800 Ultra will be a small bit (about 3%) better at full screen anti-aliasing than the GeForce GT 440 1.5GB, and also able to handle higher resolutions while still performing well. (explain)

GeForce 8800 Ultra		14688 Mpixels/sec
GeForce GT 440 1.5GB		14256 Mpixels/sec
	Difference: 432 (3%)

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 information (measured in megabytes per second) that can be moved across the external memory interface in one second. The number is worked out by multiplying the card's bus width by its memory clock speed. If it uses DDR memory, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card can possibly record to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of ROPs by the clock 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 output rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.