GeForce 810M vs Radeon HD 6870

Intro

Compare all that to the Radeon HD 6870, which features a clock speed of 900 MHz and a GDDR5 memory speed of 1050 MHz. It also uses a 256-bit memory bus, and makes use of a 40 nm design. It features 1120 SPUs, 56 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 HD 6870		151 Watts
	Difference: 136 Watts (907%)

Memory Bandwidth

The Radeon HD 6870 should in theory be a lot faster than the GeForce 810M overall. (explain)

Radeon HD 6870		134400 MB/sec
GeForce 810M		14400 MB/sec
	Difference: 120000 (833%)

Texel Rate

The Radeon HD 6870 should be much (more or less 754%) faster with regards to anisotropic filtering than the GeForce 810M. (explain)

Radeon HD 6870		50400 Mtexels/sec
GeForce 810M		5904 Mtexels/sec
	Difference: 44496 (754%)

Pixel Rate

The Radeon HD 6870 is much (about 876%) more effective at anti-aliasing than the GeForce 810M, and will be able to handle higher screen resolutions without losing too much performance. (explain)

Radeon HD 6870		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: Memory bandwidth is the max amount of data (in units of megabytes per second) that can be transferred past the external memory interface in a second. It's worked out by multiplying the bus width by the speed of its memory. If it uses DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied per second. This number is worked out by multiplying the total number of texture units by the core speed of the chip. The better this number, the better the graphics 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 graphics card can possibly record to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.