GeForce GTX 850M vs Radeon HD 6850

Intro

Compare those specifications to the Radeon HD 6850, which has a GPU core clock speed of 775 MHz, and 1024 MB of GDDR5 RAM running at 1000 MHz through a 256-bit bus. It also is made up of 960 SPUs, 48 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

GeForce GTX 850M		3340 points
Radeon HD 6850		2395 points
	Difference: 945 (39%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 850M		40 Watts
Radeon HD 6850		127 Watts
	Difference: 87 Watts (218%)

Memory Bandwidth

The Radeon HD 6850, in theory, should be quite a bit faster than the GeForce GTX 850M in general. (explain)

Radeon HD 6850		128000 MB/sec
GeForce GTX 850M		32000 MB/sec
	Difference: 96000 (300%)

Texel Rate

The Radeon HD 6850 will be a little bit (about 6%) more effective at anisotropic filtering than the GeForce GTX 850M. (explain)

Radeon HD 6850		37200 Mtexels/sec
GeForce GTX 850M		35040 Mtexels/sec
	Difference: 2160 (6%)

Pixel Rate

If using a high screen resolution is important to you, then the Radeon HD 6850 is superior to the GeForce GTX 850M, by a large margin. (explain)

Radeon HD 6850		24800 Mpixels/sec
GeForce GTX 850M		14016 Mpixels/sec
	Difference: 10784 (77%)

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 maximum amount of data (measured in megabytes per second) that can be moved over the external memory interface in a second. It's calculated by multiplying the card's interface width by its memory speed. If the card has DDR type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed per second. This number is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher this number, 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 maximum number of pixels the graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.