GeForce GTX 980M vs Radeon R9 M365X

Intro

Compare all of that to the Radeon R9 M365X, which makes use of a 28 nm design. AMD has set the core speed at 925 MHz. The GDDR5 memory is set to run at a frequency of 1125 MHz on this specific model. It features 640 SPUs along with 40 Texture Address Units and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

The GeForce GTX 980M should in theory perform quite a bit faster than the Radeon R9 M365X in general. (explain)

GeForce GTX 980M		128000 MB/sec
Radeon R9 M365X		72000 MB/sec
	Difference: 56000 (78%)

Texel Rate

The GeForce GTX 980M is much (about 169%) faster with regards to AF than the Radeon R9 M365X. (explain)

GeForce GTX 980M		99648 Mtexels/sec
Radeon R9 M365X		37000 Mtexels/sec
	Difference: 62648 (169%)

Pixel Rate

The GeForce GTX 980M is quite a bit (more or less 349%) better at anti-aliasing than the Radeon R9 M365X, and also should be capable of handling higher screen resolutions more effectively. (explain)

GeForce GTX 980M		66432 Mpixels/sec
Radeon R9 M365X		14800 Mpixels/sec
	Difference: 51632 (349%)

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 data (in units of megabytes per second) that can be transferred past the external memory interface in a second. The number is calculated by multiplying the card's bus width by the speed of its memory. If it uses DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better 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 per second. This number is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The higher this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the the core clock speed. 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 also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.