GeForce 940M vs Radeon HD 6850

Intro

Compare those specifications to the Radeon HD 6850, which makes use of a 40 nm design. AMD has set the core frequency at 775 MHz. The GDDR5 RAM works at a speed of 1000 MHz on this card. It features 960 SPUs as well as 48 Texture Address Units 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

Radeon HD 6850		2395 points
GeForce 940M		1740 points
	Difference: 655 (38%)

Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon HD 6850 should be 700% faster than the GeForce 940M in general, due to its greater data rate. (explain)

Radeon HD 6850		128000 MB/sec
GeForce 940M		16000 MB/sec
	Difference: 112000 (700%)

Texel Rate

The Radeon HD 6850 is a lot (approximately 45%) more effective at texture filtering than the GeForce 940M. (explain)

Radeon HD 6850		37200 Mtexels/sec
GeForce 940M		25728 Mtexels/sec
	Difference: 11472 (45%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon HD 6850 is the winner, and very much so. (explain)

Radeon HD 6850		24800 Mpixels/sec
GeForce 940M		8576 Mpixels/sec
	Difference: 16224 (189%)

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: Memory bandwidth is the max amount of information (in units of megabytes per second) that can be moved past the external memory interface in one second. It's calculated by multiplying the interface width by the speed of its memory. In the case of DDR type memory, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed in one second. This number is worked out by multiplying the total number of texture units by the core speed of the chip. The higher this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly record to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs 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 rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.