GeForce GT 440 3GB vs GeForce GTX 580 3GB

Intro

Compare those specifications to the GeForce GTX 580 3GB, which features a core clock speed of 772 MHz and a GDDR5 memory frequency of 1002 MHz. It also features a 384-bit bus, and makes use of a 40 nm design. It features 512 SPUs, 64 Texture Address Units, and 48 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 440 3GB		56 Watts
GeForce GTX 580 3GB		244 Watts
	Difference: 188 Watts (336%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 580 3GB should be quite a bit faster than the GeForce GT 440 3GB overall. (explain)

GeForce GTX 580 3GB		192384 MB/sec
GeForce GT 440 3GB		43200 MB/sec
	Difference: 149184 (345%)

Texel Rate

The GeForce GTX 580 3GB will be quite a bit (about 247%) faster with regards to texture filtering than the GeForce GT 440 3GB. (explain)

GeForce GTX 580 3GB		49408 Mtexels/sec
GeForce GT 440 3GB		14256 Mtexels/sec
	Difference: 35152 (247%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTX 580 3GB is superior to the GeForce GT 440 3GB, by far. (explain)

GeForce GTX 580 3GB		37056 Mpixels/sec
GeForce GT 440 3GB		14256 Mpixels/sec
	Difference: 22800 (160%)

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 data (measured in megabytes per second) that can be transferred over the external memory interface within a 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 DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.