Performance in Simulators
The PowerColor PCS+ HD6770 Vortex II has no rivals in its class whereas the GeForce GTX 550 Ti falls far behind. There is no point in overclocking the PowerColor further since it delivers a playable frame rate at every resolution.
Performance in Strategies
StarCraft II: Wings of Liberty
You may think about upgrading your computer for the upcoming second part of the StarCraft II saga. However, you don’t have to worry if you’ve got a Radeon HD 5770 as it can deliver high performance here. The PowerColor PCS+ HD6770 Vortex II is 20% faster than the GeForce GTX 550 Ti in this test, yet cannot make the game playable at 2560x1600 even with our overclocking.
Total War: Shogun 2
The PowerColor PCS+ HD6770 Vortex II takes an in-between position in the diagram. It is slower than the Radeon HD 6850 but faster than the other products from its class. AMD's decision to rebrand the Radeon HD 5770 looks more and more justifiable to us.