Radeon R7 260X vs Radeon R9 M280X

Intro

Compare those specifications to the Radeon R9 M280X, which has clock speeds of 900 MHz on the GPU, and 1375 MHz on the 4096 MB of GDDR5 memory. It features 896 SPUs as well as 56 Texture Address Units and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M280X		75 Watts
Radeon R7 260X		115 Watts
	Difference: 40 Watts (53%)

Memory Bandwidth

The Radeon R7 260X, in theory, should be just a bit faster than the Radeon R9 M280X overall. (explain)

Radeon R7 260X		104000 MB/sec
Radeon R9 M280X		88000 MB/sec
	Difference: 16000 (18%)

Texel Rate

The Radeon R7 260X should be a lot (approximately 22%) faster with regards to AF than the Radeon R9 M280X. (explain)

Radeon R7 260X		61600 Mtexels/sec
Radeon R9 M280X		50400 Mtexels/sec
	Difference: 11200 (22%)

Pixel Rate

The Radeon R7 260X should be a lot (about 22%) faster with regards to anti-aliasing than the Radeon R9 M280X, and will be able to handle higher screen resolutions without slowing down too much. (explain)

Radeon R7 260X		17600 Mpixels/sec
Radeon R9 M280X		14400 Mpixels/sec
	Difference: 3200 (22%)

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 data (counted in megabytes per second) that can be moved past the external memory interface in one second. It's calculated by multiplying the bus width by its memory clock speed. If the card has DDR type memory, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly write to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called 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, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.