techPowerUp posted a review on the HIS Radeon HD 5770 1 GB
A quote from the article:
>> HIS Radeon HD 5770 1 GB Review
AMD's next step in their Radeon HD 5000 release strategy is the Radeon HD 5770 which is based on the new 40 nm Juniper core. It features 800 shaders and 1 GB of GDDR5 memory on a 128-bit bus. Essentially this makes the card perform like a HD 4870 but adds new features like DirectX 11, ATI Eyefinity and reduced power consumption.
>> HIS Radeon HD 5770 1 GB Review