Radeon R9 280 vs Radeon R9 M280X

Intro

Compare all that to the Radeon R9 M280X, which has core clock speeds of 900 MHz on the GPU, and 1375 MHz on the 4096 MB of GDDR5 memory. It features 896 SPUs along with 56 Texture Address Units and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

In theory, the Radeon R9 280 should be a lot faster than the Radeon R9 M280X in general. (explain)

Radeon R9 280		240000 MB/sec
Radeon R9 M280X		88000 MB/sec
	Difference: 152000 (173%)

Texel Rate

The Radeon R9 280 will be much (more or less 107%) more effective at AF than the Radeon R9 M280X. (explain)

Radeon R9 280		104496 Mtexels/sec
Radeon R9 M280X		50400 Mtexels/sec
	Difference: 54096 (107%)

Pixel Rate

If using a high screen resolution is important to you, then the Radeon R9 280 is superior to the Radeon R9 M280X, and very much so. (explain)

Radeon R9 280		29856 Mpixels/sec
Radeon R9 M280X		14400 Mpixels/sec
	Difference: 15456 (107%)

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 information (counted in megabytes per second) that can be transferred over the external memory interface within a second. It's worked out by multiplying the card's bus width by its memory clock speed. In the case of DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better 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 amount of texture map elements (texels) that are processed in one second. This number is calculated by multiplying the total amount of texture units of the card by the core 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 applied per second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly record to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.