Radeon R9 390X 8G vs Radeon R9 M365X

Intro

Compare all of that to the Radeon R9 M365X, which uses a 28 nm design. AMD has clocked the core speed at 925 MHz. The GDDR5 RAM works at a frequency of 1125 MHz on this card. It features 640 SPUs as well as 40 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon R9 390X 8G will be 433% quicker than the Radeon R9 M365X in general, because of its greater bandwidth. (explain)

Radeon R9 390X 8G		384000 MB/sec
Radeon R9 M365X		72000 MB/sec
	Difference: 312000 (433%)

Texel Rate

The Radeon R9 390X 8G will be quite a bit (approximately 399%) more effective at AF than the Radeon R9 M365X. (explain)

Radeon R9 390X 8G		184800 Mtexels/sec
Radeon R9 M365X		37000 Mtexels/sec
	Difference: 147800 (399%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon R9 390X 8G is a better choice, by a large margin. (explain)

Radeon R9 390X 8G		67200 Mpixels/sec
Radeon R9 M365X		14800 Mpixels/sec
	Difference: 52400 (354%)

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 (in units of megabytes per second) that can be transferred past the external memory interface within a second. The number is worked out by multiplying the interface width by its memory speed. If the card has DDR type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, 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 texture map elements (texels) that can be applied per second. This figure is worked out 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 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 can possibly record to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.