GeForce GT 220 GDDR3 vs Radeon R9 390X 8G

Intro

Compare all that to the Radeon R9 390X 8G, which features GPU clock speed of 1050 MHz, and 8192 MB of GDDR5 memory running at 1500 MHz through a 512-bit bus. It also is made up of 2816 Stream Processors, 176 TAUs, and 64 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 220 GDDR3		58 Watts
Radeon R9 390X 8G		275 Watts
	Difference: 217 Watts (374%)

Memory Bandwidth

The Radeon R9 390X 8G, in theory, should perform a lot faster than the GeForce GT 220 GDDR3 in general. (explain)

Radeon R9 390X 8G		384000 MB/sec
GeForce GT 220 GDDR3		32384 MB/sec
	Difference: 351616 (1086%)

Texel Rate

The Radeon R9 390X 8G should be a lot (more or less 1748%) better at AF than the GeForce GT 220 GDDR3. (explain)

Radeon R9 390X 8G		184800 Mtexels/sec
GeForce GT 220 GDDR3		10000 Mtexels/sec
	Difference: 174800 (1748%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon R9 390X 8G is a better choice, and very much so. (explain)

Radeon R9 390X 8G		67200 Mpixels/sec
GeForce GT 220 GDDR3		5000 Mpixels/sec
	Difference: 62200 (1244%)

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 information (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 speed. If it uses DDR type memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.