Radeon R9 270 vs Radeon R9 M270X

Intro

Compare that to the Radeon R9 M270X, which has GPU core 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 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the Radeon R9 270 should be 149% quicker than the Radeon R9 M270X overall, due to its greater bandwidth. (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%) better at 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 much (approximately 148%) more effective at full screen anti-aliasing than the Radeon R9 M270X, and able to handle higher resolutions better. (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 past the external memory interface within a second. It's worked out by multiplying the card's bus width by its memory clock speed. In the case of DDR RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This is worked out by multiplying the total texture units 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 applied in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of colour ROPs 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 rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.