GeForce 810M vs Radeon HD 6790

Intro

Compare all of that to the Radeon HD 6790, which comes with core speeds of 840 MHz on the GPU, and 1050 MHz on the 1024 MB of GDDR5 RAM. It features 800 SPUs as well as 40 TAUs and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 810M		15 Watts
Radeon HD 6790		150 Watts
	Difference: 135 Watts (900%)

Memory Bandwidth

In theory, the Radeon HD 6790 is 833% faster than the GeForce 810M overall, because of its higher data rate. (explain)

Radeon HD 6790		134400 MB/sec
GeForce 810M		14400 MB/sec
	Difference: 120000 (833%)

Texel Rate

The Radeon HD 6790 should be a lot (about 469%) better at texture filtering than the GeForce 810M. (explain)

Radeon HD 6790		33600 Mtexels/sec
GeForce 810M		5904 Mtexels/sec
	Difference: 27696 (469%)

Pixel Rate

The Radeon HD 6790 will be quite a bit (approximately 355%) better at full screen anti-aliasing than the GeForce 810M, and able to handle higher resolutions without slowing down too much. (explain)

Radeon HD 6790		13440 Mpixels/sec
GeForce 810M		2952 Mpixels/sec
	Difference: 10488 (355%)

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 MB per second) that can be moved over the external memory interface in a second. It's worked out by multiplying the card's interface width by its memory speed. If the card has DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum 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 better the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

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