Radeon R9 290X vs Radeon R9 M280X

Intro

Compare those specs to the Radeon R9 M280X, which features core 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 Rasterization Operator Units.

Display Graphs

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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 264% quicker than the Radeon R9 M280X overall, due to its higher bandwidth. (explain)

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

Texel Rate

The Radeon R9 290X will be much (approximately 179%) faster with regards to texture filtering than the Radeon R9 M280X. (explain)

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

Pixel Rate

The Radeon R9 290X is a lot (approximately 256%) better at AA than the Radeon R9 M280X, and also able to handle higher screen resolutions without slowing down too much. (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 data (measured in MB per second) that can be moved past the external memory interface within a second. It's calculated by multiplying the card's bus width by its memory clock speed. If it uses DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This figure is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly write to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.