Radeon R9 M385X vs Radeon RX 470

Intro

Compare all that to the Radeon RX 470, which makes use of a 14 nm design. AMD has clocked the core frequency at 926 MHz. The GDDR5 memory is set to run at a speed of 1650 MHz on this card. It features 2048 SPUs as well as 128 TAUs and 32 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically, the Radeon RX 470 should perform a lot faster than the Radeon R9 M385X overall. (explain)

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

Texel Rate

The Radeon RX 470 will be quite a bit (more or less 92%) better at anisotropic filtering than the Radeon R9 M385X. (explain)

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

Pixel Rate

If running with high levels of AA is important to you, then the Radeon RX 470 is superior to the Radeon R9 M385X, by far. (explain)

Radeon RX 470		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: Memory bandwidth is the largest amount of information (counted in MB per second) that can be transported across the external memory interface in one second. The number is calculated by multiplying the bus width by its memory speed. In the case of DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied in one second. This is worked out by multiplying the total number of 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 one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly write to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.