AMD's next-generation PC processor architecture that seeks to challenge the best Intel has, codenamed "Bulldozer", is set to make its desktop PC debut in 2Q next year, with a desktop processor die codenamed "Zambezi". AMD is seeking to target all market segments, including an enthusiast-grade 8-core segment, a performance 6-core segment, and a mainstream 4-core segment. The roadmap reveals that Zambezi will make its entry with the enthusiast-grade 8-core models first, starting with 125W and 95W models, trailed by 6-core and 4-core ones.
Another couple of architectural details revealed is that Zambezi's integrated memory controller (IMC) supports DDR3-1866 MHz as its standard memory type, just like Deneb supports DDR3-1333 MHz as its standard. DDR3-1866 MHz, or PC3-14900 as it's technically known, will churn out 29.8 GB/s in dual-channel mode, that's higher than triple-channel DDR3-1066 MHz (25.6 GB/s), which is Intel Core i7 LGA1366 processors' official memory standard. The 8-core and 6-core Zambezi models feature 8 MB of L3 cache, while the 4-core ones feature 4 MB. Another tidbit you probably already knew is that existing socket AM3 processors are forwards-compatible with AM3+ (Zambezi's socket), but Zambezi processors won't work on older AM3/AM2(+) socket motherboards.