GeForce GTX Titan X vs Radeon R9 M270X

Intro

Compare those specs to the Radeon R9 M270X, which has GPU core speed of 725 MHz, and 2048 MB of GDDR5 memory set to run at 1125 MHz through a 128-bit bus. It also features 640 Stream Processors, 40 TAUs, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

As far as performance goes, the GeForce GTX Titan X should theoretically be much superior to the Radeon R9 M270X overall. (explain)

GeForce GTX Titan X		336000 MB/sec
Radeon R9 M270X		72000 MB/sec
	Difference: 264000 (367%)

Texel Rate

The GeForce GTX Titan X should be quite a bit (approximately 562%) faster with regards to texture filtering than the Radeon R9 M270X. (explain)

GeForce GTX Titan X		192000 Mtexels/sec
Radeon R9 M270X		29000 Mtexels/sec
	Difference: 163000 (562%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GTX Titan X is the winner, and very much so. (explain)

GeForce GTX Titan X		96000 Mpixels/sec
Radeon R9 M270X		11600 Mpixels/sec
	Difference: 84400 (728%)

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 data (counted in megabytes per second) that can be moved over the external memory interface within a second. It's calculated by multiplying the interface width by its memory speed. If the card has DDR memory, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the 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 texture map elements (texels) that can be processed per second. This figure is worked out by multiplying the total texture units by the core clock speed of the chip. The better this number, the better the graphics card will be at handling 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 the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.