GeForce GT 220 GDDR3 vs GeForce GT 440 1.5GB

Intro

Compare all of that to the GeForce GT 440 1.5GB, which uses a 40 nm design. nVidia has set the core frequency at 594 MHz. The GDDR3 RAM runs at a speed of 900 MHz on this particular card. It features 144 SPUs as well as 24 TAUs and 24 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 440 1.5GB		56 Watts
GeForce GT 220 GDDR3		58 Watts
	Difference: 2 Watts (4%)

Memory Bandwidth

The GeForce GT 440 1.5GB, in theory, should be quite a bit faster than the GeForce GT 220 GDDR3 overall. (explain)

GeForce GT 440 1.5GB		43200 MB/sec
GeForce GT 220 GDDR3		32384 MB/sec
	Difference: 10816 (33%)

Texel Rate

The GeForce GT 440 1.5GB should be much (about 43%) more effective at texture filtering than the GeForce GT 220 GDDR3. (explain)

GeForce GT 440 1.5GB		14256 Mtexels/sec
GeForce GT 220 GDDR3		10000 Mtexels/sec
	Difference: 4256 (43%)

Pixel Rate

The GeForce GT 440 1.5GB will be quite a bit (approximately 185%) more effective at FSAA than the GeForce GT 220 GDDR3, and should be able to handle higher resolutions while still performing well. (explain)

GeForce GT 440 1.5GB		14256 Mpixels/sec
GeForce GT 220 GDDR3		5000 Mpixels/sec
	Difference: 9256 (185%)

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 maximum amount of information (in units of MB per second) that can be transferred past the external memory interface within a second. It is calculated by multiplying the interface width by its memory speed. In the case of DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This number is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The better the texel rate, the better the 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 that the graphics chip can possibly write to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of colour ROPs 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 rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.