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Radeon HD 6770 1GB vs Radeon R7 M260X

Intro

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

Compare those specifications to the Radeon R7 M260X, which features a clock speed of 825 MHz and a GDDR5 memory speed of 1000 MHz. It also uses a 128-bit memory bus, and uses a 28 nm design. It features 384 SPUs, 24 Texture Address Units, 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 in theory be a little 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 will be a lot (approximately 82%) more effective 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 high levels of AA is important to you, then the Radeon HD 6770 1GB is superior to the Radeon R7 M260X, by far. (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: Bandwidth is the max amount of information (in units of megabytes per second) that can be transported over the external memory interface within a second. It's calculated by multiplying the card's interface width by the speed of its memory. In the case of DDR 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 anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly write to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of ROPs by the the card's clock speed. 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 lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max 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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