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Radeon HD 6770 1GB vs Radeon R7 M260X

Intro

The Radeon HD 6770 1GB uses a 40 nm design. AMD has clocked the core speed at 900 MHz. The GDDR5 memory runs at a frequency of 1050 MHz on this specific card. It features 800 SPUs as well as 40 TAUs and 16 Rasterization Operator Units.

Compare all of that to the Radeon R7 M260X, which features a core clock speed of 825 MHz and a GDDR5 memory speed of 1000 MHz. It also uses a 128-bit bus, and uses a 28 nm design. It features 384 SPUs, 24 TAUs, and 8 ROPs.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

As far as performance goes, the Radeon HD 6770 1GB should theoretically be a bit better than the Radeon R7 M260X in general. (explain)

Radeon HD 6770 1GB 67200 MB/sec
Radeon R7 M260X 64000 MB/sec
Difference: 3200 (5%)

Texel Rate

The Radeon HD 6770 1GB should be much (approximately 82%) better at anisotropic filtering than the Radeon R7 M260X. (explain)

Radeon HD 6770 1GB 36000 Mtexels/sec
Radeon R7 M260X 19800 Mtexels/sec
Difference: 16200 (82%)

Pixel Rate

The Radeon HD 6770 1GB should be quite a bit (approximately 118%) faster with regards to anti-aliasing than the Radeon R7 M260X, and also should be able to handle higher screen resolutions better. (explain)

Radeon HD 6770 1GB 14400 Mpixels/sec
Radeon R7 M260X 6600 Mpixels/sec
Difference: 7800 (118%)

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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Radeon HD 6770 1GB

Amazon.com

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Radeon R7 M260X

Amazon.com

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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 Radeon HD 6770 1GB Radeon R7 M260X
Manufacturer AMD AMD
Year January 2011 June 2014
Code Name Juniper XT Opal
Memory 1024 MB 2048 MB
Core Speed 900 MHz 825 MHz
Memory Speed 4200 MHz 4000 MHz
Power (Max TDP) 108 watts (Unknown) watts
Bandwidth 67200 MB/sec 64000 MB/sec
Texel Rate 36000 Mtexels/sec 19800 Mtexels/sec
Pixel Rate 14400 Mpixels/sec 6600 Mpixels/sec
Unified Shaders 800 384
Texture Mapping Units 40 24
Render Output Units 16 8
Bus Type GDDR5 GDDR5
Bus Width 128-bit 128-bit
Fab Process 40 nm 28 nm
Transistors 1040 million (Unknown) million
Bus PCIe x16 PCIe 3.0 x8
DirectX Version DirectX 11 DirectX 11.2
OpenGL Version OpenGL 4.1 OpenGL 4.3

Memory Bandwidth: Memory bandwidth is the max amount of information (measured in MB per second) that can be transported past the external memory interface within a second. It's worked out by multiplying the interface width by the speed of its memory. If it uses DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied per second. This is worked out by multiplying the total number of texture units of the card 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 per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly write to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also 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, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.

Display Prices

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Radeon HD 6770 1GB

Amazon.com

Check prices at:

Radeon R7 M260X

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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