GeForce GTX 850M vs Radeon HD 6770

Intro

Compare all of that to the Radeon HD 6770, which has clock speeds of 900 MHz on the GPU, and 1050 MHz on the 512 MB of GDDR5 RAM. It features 800 SPUs along with 40 Texture Address Units and 16 ROPs.

Display Graphs

Hide Graphs

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 6770		1520 points
	Difference: 1820 (120%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 850M		40 Watts
Radeon HD 6770		108 Watts
	Difference: 68 Watts (170%)

Memory Bandwidth

As far as performance goes, the Radeon HD 6770 should in theory be a lot superior to the GeForce GTX 850M overall. (explain)

Radeon HD 6770		67200 MB/sec
GeForce GTX 850M		32000 MB/sec
	Difference: 35200 (110%)

Texel Rate

The Radeon HD 6770 is a bit (approximately 3%) more effective at texture filtering than the GeForce GTX 850M. (explain)

Radeon HD 6770		36000 Mtexels/sec
GeForce GTX 850M		35040 Mtexels/sec
	Difference: 960 (3%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon HD 6770 is superior to the GeForce GTX 850M, though only just barely. (explain)

Radeon HD 6770		14400 Mpixels/sec
GeForce GTX 850M		14016 Mpixels/sec
	Difference: 384 (3%)

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 largest amount of information (measured in megabytes per second) that can be moved past the external memory interface in a second. The number is calculated by multiplying the card's interface width by the speed of its memory. If the card has DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the 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 amount 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 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 applied in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.