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GeForce GTX 860M vs Radeon HD 6770

Intro

The GeForce GTX 860M features a core clock frequency of 797 MHz and a GDDR5 memory speed of 1000 MHz. It also uses a 128-bit bus, and uses a 28 nm design. It is comprised of 1152 SPUs, 96 Texture Address Units, and 16 ROPs.

Compare all that to the Radeon HD 6770, which features a core clock frequency of 900 MHz and a GDDR5 memory speed of 1050 MHz. It also uses a 128-bit memory bus, and makes use of a 40 nm design. It is comprised of 800 SPUs, 40 TAUs, and 16 ROPs.

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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 in theory perform a bit faster than 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 will be much (more or less 113%) more effective at anisotropic 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 will be a bit (approximately 13%) better at AA than the GeForce GTX 860M, and also should be able to handle higher resolutions without losing too much performance. (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

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GeForce GTX 860M

Amazon.com

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Radeon HD 6770

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

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Model GeForce GTX 860M Radeon HD 6770
Manufacturer nVidia AMD
Year March 12 2014 January 2011
Code Name GM107 Juniper XT
Memory 4096 MB 512 MB
Core Speed 797 MHz 900 MHz
Memory Speed 4000 MHz 4200 MHz
Power (Max TDP) 45 watts 108 watts
Bandwidth 64000 MB/sec 67200 MB/sec
Texel Rate 76512 Mtexels/sec 36000 Mtexels/sec
Pixel Rate 12752 Mpixels/sec 14400 Mpixels/sec
Unified Shaders 1152 800
Texture Mapping Units 96 40
Render Output Units 16 16
Bus Type GDDR5 GDDR5
Bus Width 128-bit 128-bit
Fab Process 28 nm 40 nm
Transistors (Unknown) million 1040 million
Bus PCIe 3.0 x16 PCIe x16
DirectX Version DirectX 12 DirectX 11
OpenGL Version OpenGL 4.5 OpenGL 4.1

Memory Bandwidth: Bandwidth is the maximum amount of information (in units of megabytes per second) that can be moved across the external memory interface in a second. It's worked out by multiplying the card's interface width by its memory clock speed. In the case of DDR type RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better 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 amount of texture map elements (texels) that are processed in one second. This number is worked out by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better 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 most pixels that the graphics card can possibly record to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output 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 ability to get to the maximum fill rate.

Display Prices

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GeForce GTX 860M

Amazon.com

Check prices at:

Radeon HD 6770

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

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