GeForce GT 440 3GB vs GeForce GTX 470

Intro

Compare those specifications to the GeForce GTX 470, which has GPU core speed of 607 MHz, and 1280 MB of GDDR5 RAM set to run at 837 MHz through a 320-bit bus. It also features 448 SPUs, 56 Texture Address Units, and 40 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 440 3GB		56 Watts
GeForce GTX 470		215 Watts
	Difference: 159 Watts (284%)

Memory Bandwidth

The GeForce GTX 470, in theory, should perform much faster than the GeForce GT 440 3GB overall. (explain)

GeForce GTX 470		133920 MB/sec
GeForce GT 440 3GB		43200 MB/sec
	Difference: 90720 (210%)

Texel Rate

The GeForce GTX 470 should be much (more or less 138%) faster with regards to AF than the GeForce GT 440 3GB. (explain)

GeForce GTX 470		33992 Mtexels/sec
GeForce GT 440 3GB		14256 Mtexels/sec
	Difference: 19736 (138%)

Pixel Rate

The GeForce GTX 470 is a lot (more or less 70%) better at full screen anti-aliasing than the GeForce GT 440 3GB, and also should be capable of handling higher resolutions without losing too much performance. (explain)

GeForce GTX 470		24280 Mpixels/sec
GeForce GT 440 3GB		14256 Mpixels/sec
	Difference: 10024 (70%)

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 max amount of information (measured in MB per second) that can be transferred past the external memory interface in a second. The number is worked out by multiplying the card's bus width by its memory speed. If it uses DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the card's 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 number of texture map elements (texels) that can be applied per second. This number is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The higher this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly record to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.