GeForce GT 440 3GB vs Geforce GTX 680

Intro

Compare those specifications to the Geforce GTX 680, which makes use of a 28 nm design. nVidia has clocked the core speed at 1006 MHz. The GDDR5 RAM runs at a frequency of 1502 MHz on this card. It features 1536 SPUs as well as 128 TAUs and 32 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 440 3GB		56 Watts
Geforce GTX 680		195 Watts
	Difference: 139 Watts (248%)

Memory Bandwidth

Theoretically speaking, the Geforce GTX 680 should perform much faster than the GeForce GT 440 3GB in general. (explain)

Geforce GTX 680		192256 MB/sec
GeForce GT 440 3GB		43200 MB/sec
	Difference: 149056 (345%)

Texel Rate

The Geforce GTX 680 should be much (approximately 803%) faster with regards to anisotropic filtering than the GeForce GT 440 3GB. (explain)

Geforce GTX 680		128768 Mtexels/sec
GeForce GT 440 3GB		14256 Mtexels/sec
	Difference: 114512 (803%)

Pixel Rate

If running with a high resolution is important to you, then the Geforce GTX 680 is the winner, by far. (explain)

Geforce GTX 680		32192 Mpixels/sec
GeForce GT 440 3GB		14256 Mpixels/sec
	Difference: 17936 (126%)

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 max amount of data (counted in MB per second) that can be moved over the external memory interface in one second. It is worked out by multiplying the card's bus width by the speed of its memory. If the card has DDR type memory, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, 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 calculated by multiplying the total number of texture units by the core speed of the chip. The higher this number, the better the video card will be at handling 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 its 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 - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.