GeForce GTX 1080 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 RAM running at 1125 MHz through a 128-bit bus. It also is comprised of 640 SPUs, 40 TAUs, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the GeForce GTX 1080 should perform quite a bit faster than the Radeon R9 M270X overall. (explain)

GeForce GTX 1080		327680 MB/sec
Radeon R9 M270X		72000 MB/sec
	Difference: 255680 (355%)

Texel Rate

The GeForce GTX 1080 will be much (more or less 787%) faster with regards to texture filtering than the Radeon R9 M270X. (explain)

GeForce GTX 1080		257120 Mtexels/sec
Radeon R9 M270X		29000 Mtexels/sec
	Difference: 228120 (787%)

Pixel Rate

The GeForce GTX 1080 will be much (about 787%) faster with regards to FSAA than the Radeon R9 M270X, and also will be capable of handling higher resolutions without slowing down too much. (explain)

GeForce GTX 1080		102848 Mpixels/sec
Radeon R9 M270X		11600 Mpixels/sec
	Difference: 91248 (787%)

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 across the external memory interface within a second. It's calculated by multiplying the card's bus width by its memory speed. If it uses DDR memory, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly write to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.