GeForce GT 220 GDDR3 vs GeForce GTX 880M

Intro

Compare those specifications to the GeForce GTX 880M, which comes with core clock speeds of 954 MHz on the GPU, and 1000 MHz on the 4096 MB of GDDR5 RAM. It features 1536 SPUs along with 128 Texture Address Units and 32 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 220 GDDR3		58 Watts
GeForce GTX 880M		130 Watts
	Difference: 72 Watts (124%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 880M will be 295% faster than the GeForce GT 220 GDDR3 in general, due to its higher bandwidth. (explain)

GeForce GTX 880M		128000 MB/sec
GeForce GT 220 GDDR3		32384 MB/sec
	Difference: 95616 (295%)

Texel Rate

The GeForce GTX 880M is quite a bit (about 1121%) more effective at texture filtering than the GeForce GT 220 GDDR3. (explain)

GeForce GTX 880M		122112 Mtexels/sec
GeForce GT 220 GDDR3		10000 Mtexels/sec
	Difference: 112112 (1121%)

Pixel Rate

The GeForce GTX 880M is much (about 511%) more effective at anti-aliasing than the GeForce GT 220 GDDR3, and also capable of handling higher screen resolutions without slowing down too much. (explain)

GeForce GTX 880M		30528 Mpixels/sec
GeForce GT 220 GDDR3		5000 Mpixels/sec
	Difference: 25528 (511%)

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 across the external memory interface in one second. It's worked out by multiplying the interface width by its memory clock speed. If the card has DDR RAM, the result should be multiplied by 2 again. If it uses 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 are processed in one second. This is worked out by multiplying the total number of texture units of the card 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 applied in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly record to the 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 the core 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 output rate also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.