In a briefing today AMD disclosed a conservative road map for 45nm server processors using six and twelve cores that will gradually start to ship starting from Q1 2009. The new processors will be manufactured in a 45 nm process that will be introduced with the Shanghai quad-core later this year. Shanghai will deliver performance boost of about 20% over Barcelona thanks to the new process, the doubled overall cache size and the 800MHz DDR2 memory controller. In the second half of 2009, AMD intends to ship a single-die 6-core Socket F (1207) processor code-named "Istanbul". Offered for two- and four-socket systems, the chip will likely utilize AMD's HyperTransport 3.0 technology and increased shared L3 cache from 2MB to 6MB. In two years time from now AMD is promissing a completely new platform. Called the "Maranello" platform, it will bring new 6-core "Sao Paulo" CPUs with 6MB of L3 cache, as well as the dual-die 12-core "Magny Cours" processor with 12MB L3 cache. Both processors will be built in 45nm, with DDR3 memory support and HyperTransport version 3.0 interconnect. AMD will couple these CPUs with motherboards that use its own RD890S and RD870S northbridges as well as the SB700S southbridge.