Radeon R9 290X vs Radeon R9 M270X

Intro

Compare those specs to the Radeon R9 M270X, which features a clock speed of 725 MHz and a GDDR5 memory frequency of 1125 MHz. It also features a 128-bit memory bus, and makes use of a 28 nm design. It is made up of 640 SPUs, 40 TAUs, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon R9 290X should theoretically perform a lot faster than the Radeon R9 M270X in general. (explain)

Radeon R9 290X		320000 MB/sec
Radeon R9 M270X		72000 MB/sec
	Difference: 248000 (344%)

Texel Rate

The Radeon R9 290X is a lot (about 386%) faster with regards to anisotropic filtering than the Radeon R9 M270X. (explain)

Radeon R9 290X		140800 Mtexels/sec
Radeon R9 M270X		29000 Mtexels/sec
	Difference: 111800 (386%)

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon R9 290X is superior to the Radeon R9 M270X, by far. (explain)

Radeon R9 290X		51200 Mpixels/sec
Radeon R9 M270X		11600 Mpixels/sec
	Difference: 39600 (341%)

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 data (in units of megabytes per second) that can be transported past the external memory interface in a second. The number is worked out by multiplying the card's interface width by its memory speed. If it uses DDR type memory, the result should be multiplied by 2 once again. If 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 high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed per second. This is worked out by multiplying the total texture units 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 in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly write to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.