GeForce 810M vs Radeon HD 4870 X2

Intro

Compare that to the Radeon HD 4870 X2, which uses a 55 nm design. AMD has set the core frequency at 750 MHz. The GDDR5 memory runs at a speed of 900 MHz on this card. It features 800(160x5) 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 4870 X2		350 Watts
	Difference: 335 Watts (2233%)

Memory Bandwidth

Performance-wise, the Radeon HD 4870 X2 should theoretically be a lot superior to the GeForce 810M in general. (explain)

Radeon HD 4870 X2		230400 MB/sec
GeForce 810M		14400 MB/sec
	Difference: 216000 (1500%)

Texel Rate

The Radeon HD 4870 X2 should be much (more or less 916%) more effective at AF than the GeForce 810M. (explain)

Radeon HD 4870 X2		60000 Mtexels/sec
GeForce 810M		5904 Mtexels/sec
	Difference: 54096 (916%)

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon HD 4870 X2 is superior to the GeForce 810M, and very much so. (explain)

Radeon HD 4870 X2		24000 Mpixels/sec
GeForce 810M		2952 Mpixels/sec
	Difference: 21048 (713%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Specifications

Memory Bandwidth: Memory bandwidth is the max amount of data (measured in MB per second) that can be transported past the external memory interface in one second. It is calculated by multiplying the interface width by the speed of its memory. If it uses DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed per second. This figure is worked out by multiplying the total amount of texture units by the core speed of the chip. The higher the texel rate, the better the video 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 maximum amount of pixels the video card could possibly record to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.