Radeon R9 270 vs Radeon R9 M265X

Intro

Compare those specifications to the Radeon R9 M265X, which has a core clock speed of 575 MHz and a GDDR5 memory speed of 1125 MHz. It also uses a 128-bit bus, and uses a 28 nm design. It is comprised of 640 SPUs, 40 TAUs, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically, the Radeon R9 270 should perform quite a bit faster than the Radeon R9 M265X overall. (explain)

Radeon R9 270		179200 MB/sec
Radeon R9 M265X		72000 MB/sec
	Difference: 107200 (149%)

Texel Rate

The Radeon R9 270 will be quite a bit (more or less 213%) faster with regards to AF than the Radeon R9 M265X. (explain)

Radeon R9 270		72000 Mtexels/sec
Radeon R9 M265X		23000 Mtexels/sec
	Difference: 49000 (213%)

Pixel Rate

If using a high resolution is important to you, then the Radeon R9 270 is the winner, by far. (explain)

Radeon R9 270		28800 Mpixels/sec
Radeon R9 M265X		9200 Mpixels/sec
	Difference: 19600 (213%)

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 max amount of data (measured in MB per second) that can be moved over the external memory interface in a second. It is worked out by multiplying the interface width by its memory clock speed. If it uses DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly record to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.