GeForce GTX 1080 vs Radeon R9 M365X

Intro

Compare those specifications to the Radeon R9 M365X, which has GPU clock speed of 925 MHz, and 4096 MB of GDDR5 memory set to run at 1125 MHz through a 128-bit bus. It also is comprised of 640 SPUs, 40 TAUs, and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

The GeForce GTX 1080 should theoretically be much faster than the Radeon R9 M365X overall. (explain)

GeForce GTX 1080		327680 MB/sec
Radeon R9 M365X		72000 MB/sec
	Difference: 255680 (355%)

Texel Rate

The GeForce GTX 1080 should be a lot (approximately 595%) faster with regards to texture filtering than the Radeon R9 M365X. (explain)

GeForce GTX 1080		257120 Mtexels/sec
Radeon R9 M365X		37000 Mtexels/sec
	Difference: 220120 (595%)

Pixel Rate

The GeForce GTX 1080 is quite a bit (about 595%) better at AA than the Radeon R9 M365X, and should be capable of handling higher screen resolutions while still performing well. (explain)

GeForce GTX 1080		102848 Mpixels/sec
Radeon R9 M365X		14800 Mpixels/sec
	Difference: 88048 (595%)

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 largest amount of information (measured in MB per second) that can be transferred across the external memory interface within a second. The number is worked out by multiplying the interface width by its memory clock speed. In the case of DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the faster 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 applied 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 texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly record to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel 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 ability to get to the maximum fill rate.