GeForce GT 440 1.5GB vs GeForce GTX 460 1GB

Intro

Compare all of that to the GeForce GTX 460 1GB, which has a core clock speed of 675 MHz and a GDDR5 memory speed of 900 MHz. It also features a 256-bit bus, and makes use of a 40 nm design. It features 336 SPUs, 56 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 440 1.5GB		56 Watts
GeForce GTX 460 1GB		160 Watts
	Difference: 104 Watts (186%)

Memory Bandwidth

Performance-wise, the GeForce GTX 460 1GB should in theory be much superior to the GeForce GT 440 1.5GB in general. (explain)

GeForce GTX 460 1GB		115200 MB/sec
GeForce GT 440 1.5GB		43200 MB/sec
	Difference: 72000 (167%)

Texel Rate

The GeForce GTX 460 1GB is much (more or less 165%) better at anisotropic filtering than the GeForce GT 440 1.5GB. (explain)

GeForce GTX 460 1GB		37800 Mtexels/sec
GeForce GT 440 1.5GB		14256 Mtexels/sec
	Difference: 23544 (165%)

Pixel Rate

The GeForce GTX 460 1GB should be quite a bit (about 52%) better at FSAA than the GeForce GT 440 1.5GB, and also will be able to handle higher resolutions while still performing well. (explain)

GeForce GTX 460 1GB		21600 Mpixels/sec
GeForce GT 440 1.5GB		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: Memory bandwidth is the maximum amount of data (in units of MB per second) that can be transferred over the external memory interface in a second. It's worked out by multiplying the bus width by its memory clock speed. If it uses DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better 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 processed per second. This is worked out by multiplying the total amount of texture units of the card by the core 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 processed in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of ROPs by the clock speed of the card. 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 fill rate also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.