GeForce GT 440 1.5GB vs GeForce GTX 275

Intro

Compare those specs to the GeForce GTX 275, which makes use of a 55 nm design. nVidia has clocked the core frequency at 633 MHz. The GDDR3 memory runs at a speed of 1134 MHz on this model. It features 240 SPUs along with 80 Texture Address Units and 28 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 440 1.5GB		56 Watts
GeForce GTX 275		219 Watts
	Difference: 163 Watts (291%)

Memory Bandwidth

The GeForce GTX 275, in theory, should be quite a bit faster than the GeForce GT 440 1.5GB in general. (explain)

GeForce GTX 275		127008 MB/sec
GeForce GT 440 1.5GB		43200 MB/sec
	Difference: 83808 (194%)

Texel Rate

The GeForce GTX 275 will be much (about 255%) better at anisotropic filtering than the GeForce GT 440 1.5GB. (explain)

GeForce GTX 275		50640 Mtexels/sec
GeForce GT 440 1.5GB		14256 Mtexels/sec
	Difference: 36384 (255%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce GTX 275 is the winner, and very much so. (explain)

GeForce GTX 275		17724 Mpixels/sec
GeForce GT 440 1.5GB		14256 Mpixels/sec
	Difference: 3468 (24%)

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 information (counted in megabytes per second) that can be transferred past the external memory interface in a second. It is worked out by multiplying the interface width by the speed of its memory. In the case of DDR type memory, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This number is calculated 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 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 most pixels the video card could possibly write to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.