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GeForce GTX 860M vs Radeon HD 6770 1GB

Intro

The GeForce GTX 860M features clock speeds of 797 MHz on the GPU, and 1000 MHz on the 4096 MB of GDDR5 memory. It features 1152 SPUs as well as 96 Texture Address Units and 16 ROPs.

Compare those specifications to the Radeon HD 6770 1GB, which features clock speeds of 900 MHz on the GPU, and 1050 MHz on the 1024 MB of GDDR5 memory. It features 800 SPUs as well as 40 TAUs and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 860M 45 Watts
Radeon HD 6770 1GB 108 Watts
Difference: 63 Watts (140%)

Memory Bandwidth

As far as performance goes, the Radeon HD 6770 1GB should in theory be a small bit better than the GeForce GTX 860M in general. (explain)

Radeon HD 6770 1GB 67200 MB/sec
GeForce GTX 860M 64000 MB/sec
Difference: 3200 (5%)

Texel Rate

The GeForce GTX 860M is a lot (approximately 113%) more effective at texture filtering than the Radeon HD 6770 1GB. (explain)

GeForce GTX 860M 76512 Mtexels/sec
Radeon HD 6770 1GB 36000 Mtexels/sec
Difference: 40512 (113%)

Pixel Rate

The Radeon HD 6770 1GB is a small bit (approximately 13%) better at FSAA than the GeForce GTX 860M, and will be capable of handling higher resolutions more effectively. (explain)

Radeon HD 6770 1GB 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 1GB

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 1GB
Manufacturer nVidia AMD
Year March 12 2014 January 2011
Code Name GM107 Juniper XT
Memory 4096 MB 1024 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: Memory bandwidth is the largest amount of data (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 interface width by its memory speed. If the card has DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, 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 figure is worked out by multiplying the total texture units of the card by the core speed of the chip. The better the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly write to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Render Output Units by the clock speed of the card. 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 many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

Hide Prices

GeForce GTX 860M

Amazon.com

Check prices at:

Radeon HD 6770 1GB

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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