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GeForce GT 220 GDDR3 vs GeForce GTX 950M

Intro

The GeForce GT 220 GDDR3 features a clock frequency of 625 MHz and a GDDR3 memory frequency of 1012 MHz. It also features a 128-bit bus, and makes use of a 40 nm design. It is made up of 48 SPUs, 16 TAUs, and 8 ROPs.

Compare those specifications to the GeForce GTX 950M, which features GPU clock speed of 914 MHz, and 2048 MB of DDR3 RAM set to run at 1000 MHz through a 128-bit bus. It also is made up of 640 SPUs, 40 Texture Address Units, 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 perform a little 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 should be a lot (approximately 266%) more effective at anisotropic filtering 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

If running with high levels of AA is important to you, then the GeForce GTX 950M is superior to the GeForce GT 220 GDDR3, by a large margin. (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: Memory bandwidth is the maximum amount of data (in units of megabytes per second) that can be transported past the external memory interface within a second. It is worked out by multiplying the interface width by its memory clock speed. If it uses DDR type RAM, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed in one second. This number is calculated by multiplying the total amount of texture units of the card by the core clock 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 applied in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly record to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.

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