GeForce GT 440 1.5GB vs GeForce GTX 580

Intro

Compare all of that to the GeForce GTX 580, which features a clock frequency of 772 MHz and a GDDR5 memory speed of 1002 MHz. It also makes use of a 384-bit bus, and uses a 40 nm design. It is made up of 512 SPUs, 64 Texture Address Units, and 48 Raster Operation Units.

Display Graphs

Hide Graphs

Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

GeForce GTX 580		4956 points
GeForce GT 440 1.5GB		840 points
	Difference: 4116 (490%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 440 1.5GB		56 Watts
GeForce GTX 580		244 Watts
	Difference: 188 Watts (336%)

Memory Bandwidth

In theory, the GeForce GTX 580 should be 345% quicker than the GeForce GT 440 1.5GB overall, because of its higher data rate. (explain)

GeForce GTX 580		192384 MB/sec
GeForce GT 440 1.5GB		43200 MB/sec
	Difference: 149184 (345%)

Texel Rate

The GeForce GTX 580 is quite a bit (about 247%) faster with regards to anisotropic filtering than the GeForce GT 440 1.5GB. (explain)

GeForce GTX 580		49408 Mtexels/sec
GeForce GT 440 1.5GB		14256 Mtexels/sec
	Difference: 35152 (247%)

Pixel Rate

The GeForce GTX 580 will be quite a bit (about 160%) better at AA than the GeForce GT 440 1.5GB, and also able to handle higher resolutions without slowing down too much. (explain)

GeForce GTX 580		37056 Mpixels/sec
GeForce GT 440 1.5GB		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 largest amount of data (counted in MB per second) that can be transported past the external memory interface within a second. It's calculated by multiplying the card's interface width by its memory clock speed. If the card has DDR type RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.