GeForce GT 440 3GB vs Geforce GTX 690

Intro

Compare that to the Geforce GTX 690, which features a clock frequency of 915 MHz and a GDDR5 memory frequency of 1502 MHz. It also uses a 256-bit memory bus, and makes use of a 28 nm design. It features 1536 SPUs, 128 TAUs, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 440 3GB		56 Watts
Geforce GTX 690		300 Watts
	Difference: 244 Watts (436%)

Memory Bandwidth

As far as performance goes, the Geforce GTX 690 should in theory be quite a bit superior to the GeForce GT 440 3GB overall. (explain)

Geforce GTX 690		384512 MB/sec
GeForce GT 440 3GB		43200 MB/sec
	Difference: 341312 (790%)

Texel Rate

The Geforce GTX 690 will be quite a bit (more or less 1543%) faster with regards to texture filtering than the GeForce GT 440 3GB. (explain)

Geforce GTX 690		234240 Mtexels/sec
GeForce GT 440 3GB		14256 Mtexels/sec
	Difference: 219984 (1543%)

Pixel Rate

The Geforce GTX 690 should be much (about 311%) better at anti-aliasing than the GeForce GT 440 3GB, and also will be able to handle higher screen resolutions more effectively. (explain)

Geforce GTX 690		58560 Mpixels/sec
GeForce GT 440 3GB		14256 Mpixels/sec
	Difference: 44304 (311%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Specifications

Memory Bandwidth: Bandwidth is the largest amount of information (measured in MB per second) that can be transferred across the external memory interface in one second. The number is worked out by multiplying the card's interface width by its memory speed. In the case of DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied per second. This is worked out by multiplying the total number of texture units by the core speed of the chip. The better this number, the better the 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 could possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.