GeForce GTX 850M vs Radeon HD 6850

Intro

Compare those specs to the Radeon HD 6850, which features core speeds of 775 MHz on the GPU, and 1000 MHz on the 1024 MB of GDDR5 memory. It features 960 SPUs along with 48 TAUs and 32 ROPs.

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

Performance-wise, the Radeon HD 6850 should in theory be a lot superior to the GeForce GTX 850M overall. (explain)

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

Texel Rate

The Radeon HD 6850 is a little bit (about 6%) more effective at texture 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 running with lots of anti-aliasing is important to you, then the Radeon HD 6850 is a better choice, by far. (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 max amount of information (measured in MB per second) that can be transported past the external memory interface within a second. It is worked out by multiplying the card's interface width by its memory speed. If it uses DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster 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 processed in one second. This figure is calculated by multiplying the total texture units by the core speed of the chip. The better the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly record to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.