GeForce 9800 GT 512MB vs GeForce GT 440 3GB

Intro

Compare those specs to the GeForce GT 440 3GB, which features a GPU core clock speed of 594 MHz, and 3072 MB of GDDR3 memory running at 900 MHz through a 192-bit bus. It also features 144 Stream Processors, 24 Texture Address Units, and 24 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 440 3GB		56 Watts
GeForce 9800 GT 512MB		105 Watts
	Difference: 49 Watts (88%)

Memory Bandwidth

As far as performance goes, the GeForce 9800 GT 512MB should in theory be a lot better than the GeForce GT 440 3GB in general. (explain)

GeForce 9800 GT 512MB		57600 MB/sec
GeForce GT 440 3GB		43200 MB/sec
	Difference: 14400 (33%)

Texel Rate

The GeForce 9800 GT 512MB should be a lot (more or less 136%) faster with regards to AF than the GeForce GT 440 3GB. (explain)

GeForce 9800 GT 512MB		33600 Mtexels/sec
GeForce GT 440 3GB		14256 Mtexels/sec
	Difference: 19344 (136%)

Pixel Rate

The GeForce GT 440 3GB will be a lot (approximately 49%) faster with regards to anti-aliasing than the GeForce 9800 GT 512MB, and also able to handle higher screen resolutions more effectively. (explain)

GeForce GT 440 3GB		14256 Mpixels/sec
GeForce 9800 GT 512MB		9600 Mpixels/sec
	Difference: 4656 (49%)

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 megabytes per second) that can be transferred across the external memory interface within a second. It's calculated by multiplying the interface width by its memory speed. If the card has DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly record to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of ROPs by the the core clock speed. 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 also depends on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.