GeForce 810M vs Radeon HD 4870 512MB

Intro

Compare those specifications to the Radeon HD 4870 512MB, which uses a 55 nm design. AMD has clocked the core speed at 750 MHz. The GDDR5 memory works at a speed of 900 MHz on this specific model. It features 800(160x5) SPUs along with 40 TAUs and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 810M		15 Watts
Radeon HD 4870 512MB		150 Watts
	Difference: 135 Watts (900%)

Memory Bandwidth

As far as performance goes, the Radeon HD 4870 512MB should theoretically be a lot superior to the GeForce 810M overall. (explain)

Radeon HD 4870 512MB		115200 MB/sec
GeForce 810M		14400 MB/sec
	Difference: 100800 (700%)

Texel Rate

The Radeon HD 4870 512MB is quite a bit (about 408%) more effective at anisotropic filtering than the GeForce 810M. (explain)

Radeon HD 4870 512MB		30000 Mtexels/sec
GeForce 810M		5904 Mtexels/sec
	Difference: 24096 (408%)

Pixel Rate

The Radeon HD 4870 512MB will be much (more or less 307%) more effective at anti-aliasing than the GeForce 810M, and capable of handling higher screen resolutions more effectively. (explain)

Radeon HD 4870 512MB		12000 Mpixels/sec
GeForce 810M		2952 Mpixels/sec
	Difference: 9048 (307%)

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 information (counted in megabytes per second) that can be transported past the external memory interface in one second. It's worked out by multiplying the card's bus width by the speed of its memory. If the card has DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed in one second. This is calculated by multiplying the total texture units by the core speed of the chip. The higher the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per 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 figure is calculated by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.