GeForce GT 440 3GB vs GeForce GTX 970

Intro

Compare all that to the GeForce GTX 970, which features a clock frequency of 1050 MHz and a GDDR5 memory speed of 1750 MHz. It also uses a 256-bit memory bus, and uses a 28 nm design. It is made up of 1664 SPUs, 104 Texture Address Units, and 64 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 440 3GB		56 Watts
GeForce GTX 970		145 Watts
	Difference: 89 Watts (159%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 970 is 419% quicker than the GeForce GT 440 3GB overall, because of its greater data rate. (explain)

GeForce GTX 970		224000 MB/sec
GeForce GT 440 3GB		43200 MB/sec
	Difference: 180800 (419%)

Texel Rate

The GeForce GTX 970 is quite a bit (more or less 666%) more effective at anisotropic filtering than the GeForce GT 440 3GB. (explain)

GeForce GTX 970		109200 Mtexels/sec
GeForce GT 440 3GB		14256 Mtexels/sec
	Difference: 94944 (666%)

Pixel Rate

The GeForce GTX 970 will be a lot (about 371%) faster with regards to AA than the GeForce GT 440 3GB, and should be capable of handling higher resolutions more effectively. (explain)

GeForce GTX 970		67200 Mpixels/sec
GeForce GT 440 3GB		14256 Mpixels/sec
	Difference: 52944 (371%)

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 moved past the external memory interface in one second. It is calculated by multiplying the card's bus width by its memory clock speed. If the card has DDR type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, 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 texture map elements (texels) that are applied per second. This figure is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The better this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly record to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.