GeForce GTX 860M vs Radeon HD 6770

Intro

Compare those specifications to the Radeon HD 6770, which has a clock speed of 900 MHz and a GDDR5 memory frequency of 1050 MHz. It also features a 128-bit memory bus, and makes use of a 40 nm design. It is made up of 800 SPUs, 40 TAUs, and 16 Raster Operation Units.

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 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

As far as performance goes, the Radeon HD 6770 should in theory be a little bit superior to the GeForce GTX 860M overall. (explain)

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

Texel Rate

The GeForce GTX 860M is quite a bit (more or less 113%) faster with regards to texture filtering than the Radeon HD 6770. (explain)

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

Pixel Rate

The Radeon HD 6770 should be a little bit (more or less 13%) better at AA than the GeForce GTX 860M, and will be capable of handling higher resolutions better. (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 maximum amount of data (in units of megabytes per second) that can be moved across the external memory interface within a second. It's worked out by multiplying the interface width by its memory clock speed. If it uses DDR memory, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, 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 per second. This 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 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 most pixels the graphics card can possibly write to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.