GeForce GT 220 GDDR3 vs GeForce GTX 980M

Intro

Compare those specifications to the GeForce GTX 980M, which comes with GPU clock speed of 1038 MHz, and 4096 MB of GDDR5 memory set to run at 1000 MHz through a 256-bit bus. It also is made up of 1536 SPUs, 96 Texture Address Units, and 64 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 220 GDDR3		58 Watts
GeForce GTX 980M		100 Watts
	Difference: 42 Watts (72%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 980M should theoretically be a lot superior to the GeForce GT 220 GDDR3 overall. (explain)

GeForce GTX 980M		128000 MB/sec
GeForce GT 220 GDDR3		32384 MB/sec
	Difference: 95616 (295%)

Texel Rate

The GeForce GTX 980M will be quite a bit (approximately 896%) better at AF than the GeForce GT 220 GDDR3. (explain)

GeForce GTX 980M		99648 Mtexels/sec
GeForce GT 220 GDDR3		10000 Mtexels/sec
	Difference: 89648 (896%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTX 980M is superior to the GeForce GT 220 GDDR3, by a large margin. (explain)

GeForce GTX 980M		66432 Mpixels/sec
GeForce GT 220 GDDR3		5000 Mpixels/sec
	Difference: 61432 (1229%)

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 data (measured in MB per second) that can be moved across the external memory interface within a second. It is calculated by multiplying the card's bus 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 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This is calculated by multiplying the total number of texture units of the card by the core 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 per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly record to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.