GeForce GTX 860M vs Radeon HD 6770

Intro

Compare those specs to the Radeon HD 6770, which features GPU core speed of 900 MHz, and 512 MB of GDDR5 RAM running at 1050 MHz through a 128-bit bus. It also is made up of 800 SPUs, 40 TAUs, and 16 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 860M		4340 points
Radeon HD 6770		1520 points
	Difference: 2820 (186%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 860M		45 Watts
Radeon HD 6770		108 Watts
	Difference: 63 Watts (140%)

Memory Bandwidth

The Radeon HD 6770 should theoretically perform just a bit faster than the GeForce GTX 860M in general. (explain)

Radeon HD 6770		67200 MB/sec
GeForce GTX 860M		64000 MB/sec
	Difference: 3200 (5%)

Texel Rate

The GeForce GTX 860M will be a lot (approximately 113%) more effective at AF than the Radeon HD 6770. (explain)

GeForce GTX 860M		76512 Mtexels/sec
Radeon HD 6770		36000 Mtexels/sec
	Difference: 40512 (113%)

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon HD 6770 is a better choice, but only just. (explain)

Radeon HD 6770		14400 Mpixels/sec
GeForce GTX 860M		12752 Mpixels/sec
	Difference: 1648 (13%)

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 data (counted in MB per second) that can be moved over the external memory interface in one second. It's calculated by multiplying the bus width by its memory speed. In the case of DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, 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 texture map elements (texels) that can be applied in one second. This number is calculated by multiplying the total amount of texture units of the card by the core speed of the chip. The better this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly write to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.