Radeon R9 M365X vs Radeon R9 M385X

Intro

Compare that to the Radeon R9 M385X, which features GPU clock speed of 1100 MHz, and 4096 MB of GDDR5 memory running at 1500 MHz through a 128-bit bus. It also is made up of 896 Stream Processors, 56 TAUs, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

As far as performance goes, the Radeon R9 M385X should theoretically be a lot better than the Radeon R9 M365X overall. (explain)

Radeon R9 M385X		96000 MB/sec
Radeon R9 M365X		72000 MB/sec
	Difference: 24000 (33%)

Texel Rate

The Radeon R9 M385X should be a lot (more or less 66%) faster with regards to AF than the Radeon R9 M365X. (explain)

Radeon R9 M385X		61600 Mtexels/sec
Radeon R9 M365X		37000 Mtexels/sec
	Difference: 24600 (66%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon R9 M385X is the winner, but it probably won't make a huge difference. (explain)

Radeon R9 M385X		17600 Mpixels/sec
Radeon R9 M365X		14800 Mpixels/sec
	Difference: 2800 (19%)

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 max amount of data (counted in megabytes per second) that can be moved past the external memory interface within a second. It's calculated by multiplying the bus width by its memory speed. If it uses DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the 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 texture map elements (texels) that are processed in one second. This is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher this number, the better the video 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 most pixels the graphics card could possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.