Radeon R9 M380 vs Radeon RX 470

Intro

Compare all of that to the Radeon RX 470, which features a clock speed of 926 MHz and a GDDR5 memory speed of 1650 MHz. It also uses a 256-bit bus, and makes use of a 14 nm design. It features 2048 SPUs, 128 Texture Address Units, and 32 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon RX 470 is 120% faster than the Radeon R9 M380 overall, because of its higher bandwidth. (explain)

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

Texel Rate

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

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

Pixel Rate

If using a high resolution is important to you, then the Radeon RX 470 is the winner, by far. (explain)

Radeon RX 470		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: Memory bandwidth is the largest amount of data (measured in MB per second) that can be transported across the external memory interface in one second. It's worked out by multiplying the bus width by its memory clock speed. If it uses DDR type memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied per second. This is calculated by multiplying the total texture units of the card by the core 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 processed in a second.

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