GeForce GT 440 1.5GB vs GeForce GTX 580

Intro

Compare those specifications to the GeForce GTX 580, which uses a 40 nm design. nVidia has set the core frequency at 772 MHz. The GDDR5 RAM works at a frequency of 1002 MHz on this particular model. It features 512 SPUs along with 64 TAUs and 48 Rasterization Operator Units.

Display Graphs

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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 a lot faster than the GeForce GT 440 1.5GB overall. (explain)

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

Texel Rate

The GeForce GTX 580 should be a lot (about 247%) faster with regards to texture 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 (more or less 160%) more effective at FSAA than the GeForce GT 440 1.5GB, and also able to handle higher resolutions better. (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: Memory bandwidth is the maximum amount of information (measured in MB per second) that can be transferred past the external memory interface in a second. The number is calculated by multiplying the card's bus width by its memory clock speed. If the card has DDR memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This figure is worked out by multiplying the total texture units by the core clock speed of the chip. The higher 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 maximum amount of pixels that the graphics chip could possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.