GeForce 810M vs Radeon R9 M390X

Intro

Compare all that to the Radeon R9 M390X, which has GPU core speed of 723 MHz, and 4096 MB of GDDR5 RAM running at 1250 MHz through a 256-bit bus. It also is made up of 2048 SPUs, 128 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 810M		15 Watts
Radeon R9 M390X		125 Watts
	Difference: 110 Watts (733%)

Memory Bandwidth

As far as performance goes, the Radeon R9 M390X should in theory be quite a bit better than the GeForce 810M in general. (explain)

Radeon R9 M390X		160000 MB/sec
GeForce 810M		14400 MB/sec
	Difference: 145600 (1011%)

Texel Rate

The Radeon R9 M390X should be quite a bit (approximately 1467%) better at texture filtering than the GeForce 810M. (explain)

Radeon R9 M390X		92544 Mtexels/sec
GeForce 810M		5904 Mtexels/sec
	Difference: 86640 (1467%)

Pixel Rate

The Radeon R9 M390X is a lot (more or less 684%) faster with regards to AA than the GeForce 810M, and also will be able to handle higher resolutions without slowing down too much. (explain)

Radeon R9 M390X		23136 Mpixels/sec
GeForce 810M		2952 Mpixels/sec
	Difference: 20184 (684%)

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 max amount of information (counted in megabytes per second) that can be moved across the external memory interface in a second. It's worked out by multiplying the card's interface width by the speed of its memory. If the card has DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed in one second. This number is worked out by multiplying the total texture units of the card by the core clock 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 processed in one second.

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