Radeon R9 280 vs Radeon R9 M270X

Intro

Compare those specifications to the Radeon R9 M270X, which features a GPU core clock speed of 725 MHz, and 2048 MB of GDDR5 RAM running at 1125 MHz through a 128-bit bus. It also is comprised of 640 Stream Processors, 40 TAUs, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

As far as performance goes, the Radeon R9 280 should in theory be a lot better than the Radeon R9 M270X in general. (explain)

Radeon R9 280		240000 MB/sec
Radeon R9 M270X		72000 MB/sec
	Difference: 168000 (233%)

Texel Rate

The Radeon R9 280 will be a lot (about 260%) more effective at texture filtering than the Radeon R9 M270X. (explain)

Radeon R9 280		104496 Mtexels/sec
Radeon R9 M270X		29000 Mtexels/sec
	Difference: 75496 (260%)

Pixel Rate

The Radeon R9 280 is a lot (approximately 157%) faster with regards to anti-aliasing than the Radeon R9 M270X, and also should be able to handle higher resolutions without slowing down too much. (explain)

Radeon R9 280		29856 Mpixels/sec
Radeon R9 M270X		11600 Mpixels/sec
	Difference: 18256 (157%)

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 maximum amount of information (counted in megabytes per second) that can be moved across the external memory interface within a second. It's calculated by multiplying the card's interface width by its memory speed. In the case of DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed in one second. This figure is worked out by multiplying the total amount of texture units 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 video card 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 Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.