GeForce GTX 980 vs Radeon R9 M365X

Intro

Compare those specs to the Radeon R9 M365X, which features a core clock speed of 925 MHz and a GDDR5 memory frequency of 1125 MHz. It also makes use of a 128-bit memory bus, and makes use of a 28 nm design. It features 640 SPUs, 40 TAUs, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

As far as performance goes, the GeForce GTX 980 should in theory be much better than the Radeon R9 M365X overall. (explain)

GeForce GTX 980		224000 MB/sec
Radeon R9 M365X		72000 MB/sec
	Difference: 152000 (211%)

Texel Rate

The GeForce GTX 980 is much (about 290%) better at anisotropic filtering than the Radeon R9 M365X. (explain)

GeForce GTX 980		144128 Mtexels/sec
Radeon R9 M365X		37000 Mtexels/sec
	Difference: 107128 (290%)

Pixel Rate

The GeForce GTX 980 will be quite a bit (more or less 387%) more effective at full screen anti-aliasing than the Radeon R9 M365X, and also should be able to handle higher resolutions without slowing down too much. (explain)

GeForce GTX 980		72064 Mpixels/sec
Radeon R9 M365X		14800 Mpixels/sec
	Difference: 57264 (387%)

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 largest amount of information (measured in MB per second) that can be moved over the external memory interface within a second. It's calculated by multiplying the card's bus width by its memory clock speed. If the card has DDR type RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly record to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.