GeForce 810M vs Radeon R9 285

Intro

Compare all that to the Radeon R9 285, which comes with clock speeds of 918 MHz on the GPU, and 1375 MHz on the 2048 MB of GDDR5 memory. It features 1792 SPUs as well as 112 Texture Address Units and 32 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 810M		15 Watts
Radeon R9 285		190 Watts
	Difference: 175 Watts (1167%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 285 will be 1122% quicker than the GeForce 810M overall, due to its higher bandwidth. (explain)

Radeon R9 285		176000 MB/sec
GeForce 810M		14400 MB/sec
	Difference: 161600 (1122%)

Texel Rate

The Radeon R9 285 is much (about 1641%) faster with regards to texture filtering than the GeForce 810M. (explain)

Radeon R9 285		102816 Mtexels/sec
GeForce 810M		5904 Mtexels/sec
	Difference: 96912 (1641%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon R9 285 is superior to the GeForce 810M, by a large margin. (explain)

Radeon R9 285		29376 Mpixels/sec
GeForce 810M		2952 Mpixels/sec
	Difference: 26424 (895%)

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 data (in units of MB per second) that can be transferred across the external memory interface in one second. The number is calculated by multiplying the bus width by its memory speed. If the card has DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This figure is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The better the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.