GeForce 810M vs Radeon HD 4770

Intro

Compare those specifications to the Radeon HD 4770, which comes with a clock speed of 750 MHz and a GDDR5 memory speed of 800 MHz. It also makes use of a 128-bit memory bus, and makes use of a 40 nm design. It features 640(128x5) SPUs, 32 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 810M		15 Watts
Radeon HD 4770		80 Watts
	Difference: 65 Watts (433%)

Memory Bandwidth

In theory, the Radeon HD 4770 should perform much faster than the GeForce 810M overall. (explain)

Radeon HD 4770		51200 MB/sec
GeForce 810M		14400 MB/sec
	Difference: 36800 (256%)

Texel Rate

The Radeon HD 4770 is a lot (approximately 307%) faster with regards to AF than the GeForce 810M. (explain)

Radeon HD 4770		24000 Mtexels/sec
GeForce 810M		5904 Mtexels/sec
	Difference: 18096 (307%)

Pixel Rate

If using a high resolution is important to you, then the Radeon HD 4770 is the winner, by a large margin. (explain)

Radeon HD 4770		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 (measured in MB per second) that can be transferred across the external memory interface in one second. The number is worked out by multiplying the bus width by its memory speed. If it uses DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.