GeForce 810M vs Radeon R9 270

Intro

Compare all that to the Radeon R9 270, which comes with a GPU core clock speed of 900 MHz, and 2048 MB of GDDR5 RAM running at 1400 MHz through a 256-bit bus. It also is comprised of 1280 SPUs, 80 Texture Address Units, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 810M		15 Watts
Radeon R9 270		150 Watts
	Difference: 135 Watts (900%)

Memory Bandwidth

In theory, the Radeon R9 270 should be much faster than the GeForce 810M overall. (explain)

Radeon R9 270		179200 MB/sec
GeForce 810M		14400 MB/sec
	Difference: 164800 (1144%)

Texel Rate

The Radeon R9 270 will be a lot (more or less 1120%) more effective at AF than the GeForce 810M. (explain)

Radeon R9 270		72000 Mtexels/sec
GeForce 810M		5904 Mtexels/sec
	Difference: 66096 (1120%)

Pixel Rate

The Radeon R9 270 will be quite a bit (more or less 876%) better at AA than the GeForce 810M, and also should be able to handle higher screen resolutions while still performing well. (explain)

Radeon R9 270		28800 Mpixels/sec
GeForce 810M		2952 Mpixels/sec
	Difference: 25848 (876%)

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 (counted in MB per second) that can be transferred across the external memory interface in a second. It's worked out by multiplying the card's interface width by its memory clock speed. If the card has DDR memory, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, 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 texture map elements (texels) that can be applied in one second. This figure is worked out by multiplying the total number of texture units by the core speed of the chip. The higher the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to 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 reach the maximum fill rate.