GeForce GT 440 3GB vs GeForce GTX 570

Intro

Compare those specifications to the GeForce GTX 570, which has GPU clock speed of 732 MHz, and 1280 MB of GDDR5 RAM running at 950 MHz through a 320-bit bus. It also features 480 Stream Processors, 60 Texture Address Units, and 40 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 GTX 570		219 Watts
	Difference: 163 Watts (291%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 570 should theoretically be much better than the GeForce GT 440 3GB in general. (explain)

GeForce GTX 570		152000 MB/sec
GeForce GT 440 3GB		43200 MB/sec
	Difference: 108800 (252%)

Texel Rate

The GeForce GTX 570 will be much (more or less 208%) better at AF than the GeForce GT 440 3GB. (explain)

GeForce GTX 570		43920 Mtexels/sec
GeForce GT 440 3GB		14256 Mtexels/sec
	Difference: 29664 (208%)

Pixel Rate

The GeForce GTX 570 is quite a bit (about 105%) more effective at anti-aliasing than the GeForce GT 440 3GB, and also capable of handling higher screen resolutions without losing too much performance. (explain)

GeForce GTX 570		29280 Mpixels/sec
GeForce GT 440 3GB		14256 Mpixels/sec
	Difference: 15024 (105%)

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 data (counted in MB per second) that can be moved over the external memory interface within a second. It is worked out by multiplying the bus width by the speed of its memory. If the card has DDR type memory, it should be multiplied by 2 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, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card can possibly write to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.