In the process of shifting the product lineup to the Radeon HD 6000 series, AMD rebranded the 5770s to 6770s. So nobody should expect a significant difference. Anyhow Sapphire promises some advantages in the Radeon HD 6770 Flex that HT4U.net is exploring in the review.
A quick patch update to Windows can extend the useful life of a PC. To take the fear out of Upgrading Windows 98 to Windows XP, rely on this guide. - PCSTATS Tips