GeForce GTX 860M vs Radeon R9 M295X

Intro

Compare those specs to the Radeon R9 M295X, which makes use of a 28 nm design. AMD has clocked the core frequency at 750 MHz. The GDDR5 memory runs at a frequency of 1375 MHz on this card. It features 2048 SPUs as well as 128 TAUs and 32 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 860M		45 Watts
Radeon R9 M295X		125 Watts
	Difference: 80 Watts (178%)

Memory Bandwidth

The Radeon R9 M295X should theoretically perform much faster than the GeForce GTX 860M in general. (explain)

Radeon R9 M295X		176000 MB/sec
GeForce GTX 860M		64000 MB/sec
	Difference: 112000 (175%)

Texel Rate

The Radeon R9 M295X is much (more or less 25%) faster with regards to anisotropic filtering than the GeForce GTX 860M. (explain)

Radeon R9 M295X		96000 Mtexels/sec
GeForce GTX 860M		76512 Mtexels/sec
	Difference: 19488 (25%)

Pixel Rate

The Radeon R9 M295X is much (about 88%) better at full screen anti-aliasing than the GeForce GTX 860M, and will be able to handle higher resolutions without losing too much performance. (explain)

Radeon R9 M295X		24000 Mpixels/sec
GeForce GTX 860M		12752 Mpixels/sec
	Difference: 11248 (88%)

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 maximum amount of data (in units of megabytes per second) that can be moved over the external memory interface in one second. The number is calculated by multiplying the bus width by its memory speed. If it uses DDR memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, 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 are processed per second. This figure is worked out by multiplying the total texture units by the core speed of the chip. The higher this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly record to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.