Radeon R9 270 vs Radeon R9 M265X

Intro

Compare those specifications to the Radeon R9 M265X, which has GPU core speed of 575 MHz, and 2048 MB of GDDR5 memory set to run 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

Performance-wise, the Radeon R9 270 should theoretically be quite a bit superior to the Radeon R9 M265X in general. (explain)

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

Texel Rate

The Radeon R9 270 is much (approximately 213%) faster with regards to anisotropic filtering than the Radeon R9 M265X. (explain)

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

Pixel Rate

The Radeon R9 270 is quite a bit (approximately 213%) better at FSAA than the Radeon R9 M265X, and also should be able to handle higher screen resolutions more effectively. (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 maximum amount of information (measured in MB per second) that can be transferred across the external memory interface in a second. The number is worked out by multiplying the card's interface width by its memory clock speed. If it uses DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher 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 can be processed per second. This number is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The higher this number, the better the 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 chip could possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.