Radeon HD 6850 vs Radeon R9 M280X

Intro

Compare all of that to the Radeon R9 M280X, which features GPU core 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 Stream Processors, 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 HD 6850		127 Watts
	Difference: 52 Watts (69%)

Memory Bandwidth

As far as performance goes, the Radeon HD 6850 should in theory be much superior to the Radeon R9 M280X in general. (explain)

Radeon HD 6850		128000 MB/sec
Radeon R9 M280X		88000 MB/sec
	Difference: 40000 (45%)

Texel Rate

The Radeon R9 M280X will be a lot (approximately 35%) more effective at AF than the Radeon HD 6850. (explain)

Radeon R9 M280X		50400 Mtexels/sec
Radeon HD 6850		37200 Mtexels/sec
	Difference: 13200 (35%)

Pixel Rate

If using a high resolution is important to you, then the Radeon HD 6850 is superior to the Radeon R9 M280X, by a large margin. (explain)

Radeon HD 6850		24800 Mpixels/sec
Radeon R9 M280X		14400 Mpixels/sec
	Difference: 10400 (72%)

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 largest amount of information (in units of megabytes per second) that can be moved over the external memory interface in a second. The number is worked out by multiplying the interface width by its memory speed. If the card has DDR type RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster 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 are processed per second. This figure is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The better the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.