Geforce GTX 780 vs Radeon R9 M365X

Intro

Compare all that to the Radeon R9 M365X, which comes with a core clock speed of 925 MHz and a GDDR5 memory frequency of 1125 MHz. It also features a 128-bit memory bus, and makes use of a 28 nm design. It is made up of 640 SPUs, 40 Texture Address Units, and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Geforce GTX 780, in theory, should be much faster than the Radeon R9 M365X in general. (explain)

Geforce GTX 780		288384 MB/sec
Radeon R9 M365X		72000 MB/sec
	Difference: 216384 (301%)

Texel Rate

The Geforce GTX 780 will be much (more or less 348%) better at texture filtering than the Radeon R9 M365X. (explain)

Geforce GTX 780		165696 Mtexels/sec
Radeon R9 M365X		37000 Mtexels/sec
	Difference: 128696 (348%)

Pixel Rate

The Geforce GTX 780 will be quite a bit (approximately 180%) more effective at AA than the Radeon R9 M365X, and also should be capable of handling higher screen resolutions without slowing down too much. (explain)

Geforce GTX 780		41424 Mpixels/sec
Radeon R9 M365X		14800 Mpixels/sec
	Difference: 26624 (180%)

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 MB per second) that can be moved over the external memory interface in one second. It's calculated by multiplying the card's interface width by its memory clock speed. If it uses DDR memory, it should be multiplied by 2 once 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 anti-aliasing, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly write to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes 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.