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Performance Summary

First, let’s see the difference between the AMD Radeon HD 7770 GHz Edition and the Radeon HD 7750 at their default clock rates, the junior card being the baseline.

The HD 7770 GHz Edition is an average 28% and 27% faster than the HD 7750 with antialiasing off and on, respectively. This difference can hardly justify the 50% higher price of the HD 7770 GHz Edition. AMD seems to realize that, too. The recommended price of that card is expected to be reduced from $159 to $139 in the near future but we still think it’s too high for such a low performance.

Now let’s compare the AMD Radeon HD 7770 GHz Edition with the Radeon HD 6770:

The gap is 33-35% on average across all the tests. It’s the largest in the tessellation-heavy Unigine Heaven and Lost Planet 2 and smallest in Aliens vs. Predator (2010), DiRT 3, Left 4 Dead 2 and Metro 2033: The Last Refuge.

The next chart shows that the Radeon HD 7850 is much faster than the AMD Radeon HD 7770 GHz Edition:

We can remind you that the price difference between the HD 7770 ($159) and HD 7850 ($249) is $90 or 57%, so there’s a rather large unoccupied niche in the popular price range. Perhaps AMD will roll out something like a Radeon HD 7830 for $179-189 or even cut the price of the Radeon HD 7850 to that level!

Now the final chart compares the AMD Radeon HD 7770 GHz Edition with the Nvidia GeForce GTX 560:

The HD 7770 is routed by its opponent. The GeForce GTX 560 is an average 20% and 24% faster with antialiasing off and on, respectively. And these two cards come at almost the same recommended prices!

Here is a table with full test results:

 
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