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GeForce GT 220 GDDR3 vs GeForce GTX 950M

Intro

The GeForce GT 220 GDDR3 makes use of a 40 nm design. nVidia has set the core speed at 625 MHz. The GDDR3 memory runs at a speed of 1012 MHz on this specific model. It features 48 SPUs along with 16 Texture Address Units and 8 Rasterization Operator Units.

Compare those specifications to the GeForce GTX 950M, which has a clock frequency of 914 MHz and a DDR3 memory frequency of 1000 MHz. It also uses a 128-bit memory bus, and uses a 28 nm design. It features 640 SPUs, 40 TAUs, and 16 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 950M		55 Watts
GeForce GT 220 GDDR3		58 Watts
	Difference: 3 Watts (5%)

Memory Bandwidth

The GeForce GT 220 GDDR3 should theoretically be a bit faster than the GeForce GTX 950M in general. (explain)

GeForce GT 220 GDDR3		32384 MB/sec
GeForce GTX 950M		32000 MB/sec
	Difference: 384 (1%)

Texel Rate

The GeForce GTX 950M is much (about 266%) faster with regards to AF than the GeForce GT 220 GDDR3. (explain)

GeForce GTX 950M		36560 Mtexels/sec
GeForce GT 220 GDDR3		10000 Mtexels/sec
	Difference: 26560 (266%)

Pixel Rate

The GeForce GTX 950M should be much (about 192%) better at FSAA than the GeForce GT 220 GDDR3, and capable of handling higher resolutions more effectively. (explain)

GeForce GTX 950M		14624 Mpixels/sec
GeForce GT 220 GDDR3		5000 Mpixels/sec
	Difference: 9624 (192%)

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

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GeForce GT 220 GDDR3

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GeForce GTX 950M

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Specifications

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Model	GeForce GT 220 GDDR3	GeForce GTX 950M
Manufacturer	nVidia	nVidia
Year	October 2009	March 12 2015
Code Name	GT216	GM107
Memory	512 MB	2048 MB
Core Speed	625 MHz	914 MHz
Memory Speed	2024 MHz	2000 MHz
Power (Max TDP)	58 watts	55 watts
Bandwidth	32384 MB/sec	32000 MB/sec
Texel Rate	10000 Mtexels/sec	36560 Mtexels/sec
Pixel Rate	5000 Mpixels/sec	14624 Mpixels/sec
Unified Shaders	48	640
Texture Mapping Units	16	40
Render Output Units	8	16
Bus Type	GDDR3	DDR3
Bus Width	128-bit	128-bit
Fab Process	40 nm	28 nm
Transistors	486 million	(Unknown) million
Bus	PCIe 2.0	PCIe 3.0 x16
DirectX Version	DirectX 10.1	DirectX 12
OpenGL Version	OpenGL 3.2	OpenGL 4.5

Memory Bandwidth: Bandwidth is the largest amount of data (measured in MB per second) that can be transported over the external memory interface in one second. It is worked out by multiplying the bus width by its memory speed. If it uses DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied per second. This is worked out by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly record to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number 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 output rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.

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