Radeon R9 M385X vs Radeon RX 570

Intro

Compare those specs to the Radeon RX 570, which comes with GPU clock speed of 1168 MHz, and 4096 MB of GDDR5 memory set to run at 1750 MHz through a 256-bit bus. It also features 2048 SPUs, 128 TAUs, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon RX 570 will be 139% quicker than the Radeon R9 M385X overall, because of its higher bandwidth. (explain)

Radeon RX 570		229376 MB/sec
Radeon R9 M385X		96000 MB/sec
	Difference: 133376 (139%)

Texel Rate

The Radeon RX 570 should be much (approximately 143%) more effective at texture filtering than the Radeon R9 M385X. (explain)

Radeon RX 570		149504 Mtexels/sec
Radeon R9 M385X		61600 Mtexels/sec
	Difference: 87904 (143%)

Pixel Rate

The Radeon RX 570 is a lot (approximately 112%) better at AA than the Radeon R9 M385X, and also should be able to handle higher screen resolutions better. (explain)

Radeon RX 570		37376 Mpixels/sec
Radeon R9 M385X		17600 Mpixels/sec
	Difference: 19776 (112%)

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 maximum amount of data (counted in megabytes per second) that can be transferred across the external memory interface in a second. It's worked out by multiplying the interface width by the speed of its memory. In the case of DDR memory, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This number is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the graphics card will be at handling 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 card could possibly write to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.