GeForce GT 440 3GB vs GeForce GTX 465

Intro

Compare those specifications to the GeForce GTX 465, which features a clock speed of 607 MHz and a GDDR5 memory speed of 802 MHz. It also makes use of a 256-bit memory bus, and makes use of a 40 nm design. It is made up of 352 SPUs, 44 TAUs, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 440 3GB		56 Watts
GeForce GTX 465		200 Watts
	Difference: 144 Watts (257%)

Memory Bandwidth

In theory, the GeForce GTX 465 is 137% faster than the GeForce GT 440 3GB in general, because of its higher bandwidth. (explain)

GeForce GTX 465		102592 MB/sec
GeForce GT 440 3GB		43200 MB/sec
	Difference: 59392 (137%)

Texel Rate

The GeForce GTX 465 will be much (more or less 87%) better at anisotropic filtering than the GeForce GT 440 3GB. (explain)

GeForce GTX 465		26708 Mtexels/sec
GeForce GT 440 3GB		14256 Mtexels/sec
	Difference: 12452 (87%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GTX 465 is the winner, by far. (explain)

GeForce GTX 465		19424 Mpixels/sec
GeForce GT 440 3GB		14256 Mpixels/sec
	Difference: 5168 (36%)

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 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 the speed of its memory. In the case of DDR memory, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can 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 card's clock speed. 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 lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.