Radeon R9 M380 vs Radeon RX 470 4GB

Intro

Compare those specifications to the Radeon RX 470 4GB, which features a GPU core clock speed of 926 MHz, and 4096 MB of GDDR5 memory running at 1650 MHz through a 256-bit bus. It also is comprised of 2048 SPUs, 128 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon RX 470 4GB should in theory be much faster than the Radeon R9 M380 overall. (explain)

Radeon RX 470 4GB		211200 MB/sec
Radeon R9 M380		96000 MB/sec
	Difference: 115200 (120%)

Texel Rate

The Radeon RX 470 4GB is a lot (about 196%) faster with regards to anisotropic filtering than the Radeon R9 M380. (explain)

Radeon RX 470 4GB		118528 Mtexels/sec
Radeon R9 M380		40000 Mtexels/sec
	Difference: 78528 (196%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon RX 470 4GB is the winner, by far. (explain)

Radeon RX 470 4GB		29632 Mpixels/sec
Radeon R9 M380		16000 Mpixels/sec
	Difference: 13632 (85%)

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 largest amount of data (counted in megabytes per second) that can be transferred past the external memory interface within a second. It's calculated by multiplying the interface width by the speed of its memory. If it uses DDR type memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied in one second. This figure is worked out by multiplying the total texture units by the core clock speed of the chip. The higher the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.