Radeon R9 270 vs Radeon R9 M270X

Intro

Compare all of that to the Radeon R9 M270X, which comes with core clock speeds of 725 MHz on the GPU, and 1125 MHz on the 2048 MB of GDDR5 memory. It features 640 SPUs as well as 40 TAUs and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon R9 270 should theoretically be a lot faster than the Radeon R9 M270X in general. (explain)

Radeon R9 270		179200 MB/sec
Radeon R9 M270X		72000 MB/sec
	Difference: 107200 (149%)

Texel Rate

The Radeon R9 270 should be quite a bit (approximately 148%) faster with regards to texture filtering than the Radeon R9 M270X. (explain)

Radeon R9 270		72000 Mtexels/sec
Radeon R9 M270X		29000 Mtexels/sec
	Difference: 43000 (148%)

Pixel Rate

The Radeon R9 270 will be quite a bit (approximately 148%) faster with regards to full screen anti-aliasing than the Radeon R9 M270X, and also able to handle higher resolutions without losing too much performance. (explain)

Radeon R9 270		28800 Mpixels/sec
Radeon R9 M270X		11600 Mpixels/sec
	Difference: 17200 (148%)

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 (measured in megabytes per second) that can be transferred over the external memory interface in one second. It's worked out by multiplying the card's interface width by its memory speed. If it uses DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly record to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.