Radeon R9 280X vs Radeon R9 M280X

Intro

Compare those specs to the Radeon R9 M280X, which has GPU clock speed of 900 MHz, and 4096 MB of GDDR5 memory running at 1375 MHz through a 128-bit bus. It also is comprised of 896 Stream Processors, 56 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M280X		75 Watts
Radeon R9 280X		250 Watts
	Difference: 175 Watts (233%)

Memory Bandwidth

The Radeon R9 280X, in theory, should be a lot faster than the Radeon R9 M280X overall. (explain)

Radeon R9 280X		288000 MB/sec
Radeon R9 M280X		88000 MB/sec
	Difference: 200000 (227%)

Texel Rate

The Radeon R9 280X is a lot (approximately 116%) faster with regards to AF than the Radeon R9 M280X. (explain)

Radeon R9 280X		108800 Mtexels/sec
Radeon R9 M280X		50400 Mtexels/sec
	Difference: 58400 (116%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon R9 280X is a better choice, by far. (explain)

Radeon R9 280X		27200 Mpixels/sec
Radeon R9 M280X		14400 Mpixels/sec
	Difference: 12800 (89%)

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 maximum amount of information (counted in MB per second) that can be moved over the external memory interface in a second. The number is worked out by multiplying the card's bus width by its memory speed. In the case of DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. 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 can be processed per second. This number is worked out by multiplying the total number of texture units by the core clock speed of the chip. The higher this number, the better the 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 that the graphics chip could possibly record to the 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 - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.