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Radeon HD 6770 1GB vs Radeon R7 M260X

Intro

The Radeon HD 6770 1GB features a clock speed of 900 MHz and a GDDR5 memory frequency of 1050 MHz. It also features a 128-bit bus, and makes use of a 40 nm design. It features 800 SPUs, 40 TAUs, and 16 Raster Operation Units.

Compare those specifications to the Radeon R7 M260X, which has GPU core speed of 825 MHz, and 2048 MB of GDDR5 RAM running at 1000 MHz through a 128-bit bus. It also features 384 Stream Processors, 24 TAUs, and 8 ROPs.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon HD 6770 1GB should in theory perform just a bit faster than the Radeon R7 M260X overall. (explain)

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

Texel Rate

The Radeon HD 6770 1GB is a lot (about 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

If using a high resolution is important to you, then the Radeon HD 6770 1GB is a better choice, by a large margin. (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

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.

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 data (measured in MB per second) that can be moved across the external memory interface in one second. It is calculated by multiplying the card's interface width by its memory speed. If it uses DDR type memory, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed in one second. This number is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.

Display Prices

Hide Prices

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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