Radeon R9 M385X vs Radeon RX 470 4GB

Intro

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

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon RX 470 4GB should theoretically be a lot faster than the Radeon R9 M385X overall. (explain)

Radeon RX 470 4GB		211200 MB/sec
Radeon R9 M385X		96000 MB/sec
	Difference: 115200 (120%)

Texel Rate

The Radeon RX 470 4GB will be a lot (more or less 92%) better at AF than the Radeon R9 M385X. (explain)

Radeon RX 470 4GB		118528 Mtexels/sec
Radeon R9 M385X		61600 Mtexels/sec
	Difference: 56928 (92%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon RX 470 4GB is a better choice, by far. (explain)

Radeon RX 470 4GB		29632 Mpixels/sec
Radeon R9 M385X		17600 Mpixels/sec
	Difference: 12032 (68%)

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 (in units of MB per second) that can be transferred past the external memory interface within a second. It's calculated by multiplying the bus width by its memory clock speed. If it uses DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the graphics card 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 amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.