Radeon R9 280 vs Radeon R9 M365X

Intro

Compare all that to the Radeon R9 M365X, which has GPU clock speed of 925 MHz, and 4096 MB of GDDR5 memory running at 1125 MHz through a 128-bit bus. It also 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

The Radeon R9 280 should in theory perform quite a bit faster than the Radeon R9 M365X overall. (explain)

Radeon R9 280		240000 MB/sec
Radeon R9 M365X		72000 MB/sec
	Difference: 168000 (233%)

Texel Rate

The Radeon R9 280 should be a lot (approximately 182%) more effective at texture filtering than the Radeon R9 M365X. (explain)

Radeon R9 280		104496 Mtexels/sec
Radeon R9 M365X		37000 Mtexels/sec
	Difference: 67496 (182%)

Pixel Rate

The Radeon R9 280 is a lot (approximately 102%) more effective at AA than the Radeon R9 M365X, and should be able to handle higher screen resolutions more effectively. (explain)

Radeon R9 280		29856 Mpixels/sec
Radeon R9 M365X		14800 Mpixels/sec
	Difference: 15056 (102%)

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 (measured in megabytes per second) that can be transferred across the external memory interface in one second. It is worked out by multiplying the card's interface width by its memory clock speed. If the card has DDR type RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better 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 can be processed per second. This is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The higher this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of colour ROPs by the the core 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, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.