GeForce GT 440 3GB vs GeForce GTX 460 1GB

Intro

Compare those specs to the GeForce GTX 460 1GB, which comes with a clock frequency of 675 MHz and a GDDR5 memory frequency of 900 MHz. It also makes use of a 256-bit bus, and uses a 40 nm design. It is comprised of 336 SPUs, 56 Texture Address Units, 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 460 1GB		160 Watts
	Difference: 104 Watts (186%)

Memory Bandwidth

Theoretically, the GeForce GTX 460 1GB should perform quite a bit faster than the GeForce GT 440 3GB in general. (explain)

GeForce GTX 460 1GB		115200 MB/sec
GeForce GT 440 3GB		43200 MB/sec
	Difference: 72000 (167%)

Texel Rate

The GeForce GTX 460 1GB will be much (more or less 165%) more effective at AF than the GeForce GT 440 3GB. (explain)

GeForce GTX 460 1GB		37800 Mtexels/sec
GeForce GT 440 3GB		14256 Mtexels/sec
	Difference: 23544 (165%)

Pixel Rate

The GeForce GTX 460 1GB is a lot (about 52%) better at AA than the GeForce GT 440 3GB, and will be able to handle higher resolutions better. (explain)

GeForce GTX 460 1GB		21600 Mpixels/sec
GeForce GT 440 3GB		14256 Mpixels/sec
	Difference: 7344 (52%)

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 largest amount of information (counted in megabytes per second) that can be transported over the external memory interface in one second. It's worked out by multiplying the bus width by its memory clock speed. In the case of DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, 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 are applied in one second. This number is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The higher the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.