Radeon R9 M280X vs Radeon R9 M365X

Intro

Compare those specifications to the Radeon R9 M365X, which comes with a core clock speed of 925 MHz and a GDDR5 memory speed of 1125 MHz. It also makes use of a 128-bit memory bus, and uses a 28 nm design. It is comprised of 640 SPUs, 40 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically, the Radeon R9 M280X should be much faster than the Radeon R9 M365X overall. (explain)

Radeon R9 M280X		88000 MB/sec
Radeon R9 M365X		72000 MB/sec
	Difference: 16000 (22%)

Texel Rate

The Radeon R9 M280X is much (about 36%) better at texture filtering than the Radeon R9 M365X. (explain)

Radeon R9 M280X		50400 Mtexels/sec
Radeon R9 M365X		37000 Mtexels/sec
	Difference: 13400 (36%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon R9 M365X is the winner, but only just. (explain)

Radeon R9 M365X		14800 Mpixels/sec
Radeon R9 M280X		14400 Mpixels/sec
	Difference: 400 (3%)

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 information (counted in MB per second) that can be transferred over the external memory interface in a second. The number is calculated by multiplying the card's interface width by its memory speed. If the card has DDR memory, it must be multiplied by 2 once again. If it uses 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 high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed in one second. This number is worked out by multiplying the total texture units by the core speed of the chip. The better the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.