GeForce GT 220 GDDR3 vs Radeon R9 380 2G

Intro

Compare that to the Radeon R9 380 2G, which makes use of a 28 nm design. AMD has set the core frequency at 970 MHz. The GDDR5 memory works at a speed of 1425 MHz on this specific card. It features 1792 SPUs along with 112 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
Radeon R9 380 2G		190 Watts
	Difference: 132 Watts (228%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 380 2G should be 463% quicker than the GeForce GT 220 GDDR3 overall, due to its higher bandwidth. (explain)

Radeon R9 380 2G		182400 MB/sec
GeForce GT 220 GDDR3		32384 MB/sec
	Difference: 150016 (463%)

Texel Rate

The Radeon R9 380 2G will be quite a bit (more or less 986%) more effective at texture filtering than the GeForce GT 220 GDDR3. (explain)

Radeon R9 380 2G		108640 Mtexels/sec
GeForce GT 220 GDDR3		10000 Mtexels/sec
	Difference: 98640 (986%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon R9 380 2G is a better choice, and very much so. (explain)

Radeon R9 380 2G		31040 Mpixels/sec
GeForce GT 220 GDDR3		5000 Mpixels/sec
	Difference: 26040 (521%)

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 transported past the external memory interface in a second. It is calculated by multiplying the card's interface width by its memory clock speed. If it uses DDR type RAM, the result should be multiplied by 2 again. If it uses 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 are processed in one second. This figure is worked out by multiplying the total number 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 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 card can possibly write to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the clock speed of the card. 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 - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.