Sandy Bridge is the codename for a microarchitecture developed by Intel beginning in 2005 for central processing units in computers to replace the Nehalem microarchitecture. Intel demonstrated a Sandy Bridge processor in 2009, and released first products based on the architecture in January 2011 under the Core brand.
Originally, implementations targeted a 32 nanometer manufacturing process based on planar double-gate transistors. Subsequent products, codenamed Ivy Bridge, use a 22 nanometer process. The Ivy Bridge die shrink, known in the Intel Tick-Tock model as the "tick", is based on 3D tri-gate transistors. Intel demonstrated Ivy Bridge processors in 2011.
OverclockingWith Sandy Bridge, Intel has tied the speed of every bus (USB, SATA, PCI, PCI-E, CPU cores, Uncore, memory etc) to a single internal clock generator issuing the basic 100MHz Base Clock(BClk). With CPUs being multiplier locked, the only way to overclock is to increase the BClk, which can only be raised up to 5-7% without other hardware components failing. As a work around, Intel made available K/X-series processors which feature unlocked multipliers; multiplier cap of 57 for Sandy Bridge. For the Sandy Bridge E platform, there is alternative method known as the BClk ratio overclock.
During IDF 2010, Intel demonstrated an unknown Sandy Bridge CPU running stably overclocked at 4.9 GHz on air cooling.
Chipset Non-K edition CPUs can overclock up to four bins from its turbo multiplier..
Originally, implementations targeted a 32 nanometer manufacturing process based on planar double-gate transistors. Subsequent products, codenamed Ivy Bridge, use a 22 nanometer process. The Ivy Bridge die shrink, known in the Intel Tick-Tock model as the "tick", is based on 3D tri-gate transistors. Intel demonstrated Ivy Bridge processors in 2011.
OverclockingWith Sandy Bridge, Intel has tied the speed of every bus (USB, SATA, PCI, PCI-E, CPU cores, Uncore, memory etc) to a single internal clock generator issuing the basic 100MHz Base Clock(BClk). With CPUs being multiplier locked, the only way to overclock is to increase the BClk, which can only be raised up to 5-7% without other hardware components failing. As a work around, Intel made available K/X-series processors which feature unlocked multipliers; multiplier cap of 57 for Sandy Bridge. For the Sandy Bridge E platform, there is alternative method known as the BClk ratio overclock.
During IDF 2010, Intel demonstrated an unknown Sandy Bridge CPU running stably overclocked at 4.9 GHz on air cooling.
Chipset Non-K edition CPUs can overclock up to four bins from its turbo multiplier..