Radeon R9 290X vs Radeon R9 M280X

Intro

Compare those specifications to the Radeon R9 M280X, which comes with GPU clock speed of 900 MHz, and 4096 MB of GDDR5 RAM running at 1375 MHz through a 128-bit bus. It also is made up of 896 SPUs, 56 TAUs, 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 290X		300 Watts
	Difference: 225 Watts (300%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 290X should be much faster than the Radeon R9 M280X overall. (explain)

Radeon R9 290X		320000 MB/sec
Radeon R9 M280X		88000 MB/sec
	Difference: 232000 (264%)

Texel Rate

The Radeon R9 290X should be quite a bit (more or less 179%) more effective at AF than the Radeon R9 M280X. (explain)

Radeon R9 290X		140800 Mtexels/sec
Radeon R9 M280X		50400 Mtexels/sec
	Difference: 90400 (179%)

Pixel Rate

If using a high resolution is important to you, then the Radeon R9 290X is a better choice, by a large margin. (explain)

Radeon R9 290X		51200 Mpixels/sec
Radeon R9 M280X		14400 Mpixels/sec
	Difference: 36800 (256%)

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 (measured in MB per second) that can be transferred over the external memory interface within a second. The number is worked out by multiplying the card's interface width by its memory speed. If the card has DDR type memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, 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 texture map elements (texels) that are processed per second. This number is calculated by multiplying the total texture units of the card by the core speed of the chip. The higher the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly write 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 card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.