GeForce GTX 850M vs Radeon HD 6750

Intro

Compare all that to the Radeon HD 6750, which has GPU clock speed of 725 MHz, and 512 MB of GDDR5 memory set to run at 1000 MHz through a 128-bit bus. It also is made up of 720 Stream Processors, 36 TAUs, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 850M		40 Watts
Radeon HD 6750		86 Watts
	Difference: 46 Watts (115%)

Memory Bandwidth

As far as performance goes, the Radeon HD 6750 should in theory be a lot superior to the GeForce GTX 850M overall. (explain)

Radeon HD 6750		64000 MB/sec
GeForce GTX 850M		32000 MB/sec
	Difference: 32000 (100%)

Texel Rate

The GeForce GTX 850M is a lot (about 34%) faster with regards to texture filtering than the Radeon HD 6750. (explain)

GeForce GTX 850M		35040 Mtexels/sec
Radeon HD 6750		26100 Mtexels/sec
	Difference: 8940 (34%)

Pixel Rate

The GeForce GTX 850M will be much (about 21%) faster with regards to anti-aliasing than the Radeon HD 6750, and also able to handle higher screen resolutions more effectively. (explain)

GeForce GTX 850M		14016 Mpixels/sec
Radeon HD 6750		11600 Mpixels/sec
	Difference: 2416 (21%)

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 information (measured in MB per second) that can be transported over the external memory interface within a second. The number is calculated by multiplying the card's bus width by the speed of its memory. If it uses DDR type memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster 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 in one second. This is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

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