Radeon R9 M380 vs Radeon RX 580

Intro

Compare those specifications to the Radeon RX 580, which features a clock speed of 1257 MHz and a GDDR5 memory frequency of 2000 MHz. It also makes use of a 256-bit memory bus, and uses a 14 nm design. It features 2304 SPUs, 144 TAUs, and 32 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon RX 580 should theoretically perform a lot faster than the Radeon R9 M380 in general. (explain)

Radeon RX 580		262144 MB/sec
Radeon R9 M380		96000 MB/sec
	Difference: 166144 (173%)

Texel Rate

The Radeon RX 580 is quite a bit (more or less 353%) faster with regards to texture filtering than the Radeon R9 M380. (explain)

Radeon RX 580		181008 Mtexels/sec
Radeon R9 M380		40000 Mtexels/sec
	Difference: 141008 (353%)

Pixel Rate

If using a high resolution is important to you, then the Radeon RX 580 is the winner, by far. (explain)

Radeon RX 580		40224 Mpixels/sec
Radeon R9 M380		16000 Mpixels/sec
	Difference: 24224 (151%)

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 (counted in MB per second) that can be transferred over the external memory interface within a second. It's worked out by multiplying the interface width by its memory speed. If it uses DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly write to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.