GeForce 810M vs Radeon HD 7870

Intro

Compare those specs to the Radeon HD 7870, which features GPU clock speed of 1000 MHz, and 2048 MB of GDDR5 RAM running at 1200 MHz through a 256-bit bus. It also features 1280 Stream Processors, 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 HD 7870		175 Watts
	Difference: 160 Watts (1067%)

Memory Bandwidth

The Radeon HD 7870, in theory, should perform much faster than the GeForce 810M overall. (explain)

Radeon HD 7870		153600 MB/sec
GeForce 810M		14400 MB/sec
	Difference: 139200 (967%)

Texel Rate

The Radeon HD 7870 should be quite a bit (about 1255%) better at anisotropic filtering than the GeForce 810M. (explain)

Radeon HD 7870		80000 Mtexels/sec
GeForce 810M		5904 Mtexels/sec
	Difference: 74096 (1255%)

Pixel Rate

The Radeon HD 7870 is quite a bit (about 984%) more effective at AA than the GeForce 810M, and also should be capable of handling higher resolutions more effectively. (explain)

Radeon HD 7870		32000 Mpixels/sec
GeForce 810M		2952 Mpixels/sec
	Difference: 29048 (984%)

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 maximum amount of data (measured in megabytes per second) that can be transported past the external memory interface within a second. The number is worked out by multiplying the card's bus width by its memory clock speed. If it uses DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly record to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of ROPs by the the card's clock speed. 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 output rate also depends on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.