GeForce 9800 GTX vs GeForce GT 440 3GB

Intro

Compare those specs to the GeForce GT 440 3GB, which has a clock speed of 594 MHz and a GDDR3 memory frequency of 900 MHz. It also uses a 192-bit bus, and uses a 40 nm design. It is made up of 144 SPUs, 24 TAUs, and 24 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 440 3GB		56 Watts
GeForce 9800 GTX		140 Watts
	Difference: 84 Watts (150%)

Memory Bandwidth

In theory, the GeForce 9800 GTX should perform much faster than the GeForce GT 440 3GB in general. (explain)

GeForce 9800 GTX		70400 MB/sec
GeForce GT 440 3GB		43200 MB/sec
	Difference: 27200 (63%)

Texel Rate

The GeForce 9800 GTX is quite a bit (more or less 203%) better at texture filtering than the GeForce GT 440 3GB. (explain)

GeForce 9800 GTX		43200 Mtexels/sec
GeForce GT 440 3GB		14256 Mtexels/sec
	Difference: 28944 (203%)

Pixel Rate

If using a high resolution is important to you, then the GeForce GT 440 3GB is the winner, by a large margin. (explain)

GeForce GT 440 3GB		14256 Mpixels/sec
GeForce 9800 GTX		10800 Mpixels/sec
	Difference: 3456 (32%)

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 (in units of MB per second) that can be transferred over 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 the card has DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.