Geforce GTX 680 vs Radeon R9 M365X

Intro

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

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Geforce GTX 680 should perform a lot faster than the Radeon R9 M365X overall. (explain)

Geforce GTX 680		192256 MB/sec
Radeon R9 M365X		72000 MB/sec
	Difference: 120256 (167%)

Texel Rate

The Geforce GTX 680 is much (about 248%) more effective at AF than the Radeon R9 M365X. (explain)

Geforce GTX 680		128768 Mtexels/sec
Radeon R9 M365X		37000 Mtexels/sec
	Difference: 91768 (248%)

Pixel Rate

The Geforce GTX 680 is much (about 118%) more effective at full screen anti-aliasing than the Radeon R9 M365X, and also able to handle higher screen resolutions without losing too much performance. (explain)

Geforce GTX 680		32192 Mpixels/sec
Radeon R9 M365X		14800 Mpixels/sec
	Difference: 17392 (118%)

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 megabytes per second) that can be transported over the external memory interface within a second. The number is calculated by multiplying the card's bus width by its memory clock speed. If the card has DDR type RAM, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly record to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of ROPs by the clock speed of the card. 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 fill rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.