Radeon R9 M280X vs Radeon R9 M365X

Intro

Compare that to the Radeon R9 M365X, which has a clock frequency of 925 MHz and a GDDR5 memory speed of 1125 MHz. It also makes use of a 128-bit bus, and uses a 28 nm design. It is made up of 640 SPUs, 40 TAUs, and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon R9 M280X should perform a lot 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 should be quite a bit (about 36%) more effective at anisotropic 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 running with a high screen resolution is important to you, then the Radeon R9 M365X is the winner, though not by far. (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: Memory bandwidth is the largest amount of information (in units of megabytes per second) that can be moved past the external memory interface in one second. It is worked out by multiplying the card's interface width by its memory speed. In the case of DDR RAM, it must be multiplied by 2 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, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed in one second. This is calculated by multiplying the total number 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 handling 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 video card can possibly write to its local memory in a 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 - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.