The guys over at Bit Tech uncovered some details of Intel's upcoming 32nm Sandy Bridge architecture, you can read it over here.
Sandy Bridge CPUs will be based on the current 32nm, second generation High-k metal gate manufacturing process, but will include new architectural features such as AVX - Advanced Vector Extensions - and AES - Advanced Encryption Standard - acceleration and will arrive in Q1 next year, with possibly very limited products popping up late Q4, although depending on who we talk to the story changes.
They will be split into two markets: mainstream and enthusiast. The mainstream models will replace the current LGA1156 'H1' Clarkdale and Lynnfield CPUs (Core i3 and Core i5) and will use LGA1155 'H2' packaging.
Yes, that's right, LGA1155 - one fewer pins than current LGA1156 CPUs. These sockets are NOT compatible, so you cannot use an existing LGA1156 CPU in a new motherboard or visa versa. Not only is the position of pin-1 different, the socket notch has moved from 9mm to 11.5mm from the centre and the entire voltage plane layout has changed.
Mainstream Sandy Bridge CPUs will be both native dual- and quad-core products, currently targeting TDPs of 65W and 95W respectively, both with Hyper-Threading and Turbo Boost technology. At the moment it's not clear what frequency these CPUs will be though (likely because none are available yet from Intel).
All LGA1155 CPUs will have integrated graphics built into the core instead of a separate chip. This is an upgrade from the current IGP, PCI Express controller and memory controller in Clarkdale CPUs that is manufactured on the older 45nm process in a separate die (but still slapped together the same package). This should improve performance, as all the controllers will be in one die, like existing LGA1366 CPUs.
Next-generation Intel central processing units will come with a thermal design power of as little as 35W, which is quite a bit lower than the 65W consumed by some of today's quad-cores. In fact, as a comparison, the Core i5-750S, clocked at 2,4GHz, uses up 82W. It is unclear exactly which chips will consume only 35W, but even if they won't reach this level, quad-core Sandy Bridge units are still expected to limit themselves to a TDP of 45W (including the graphics core).
