All New
As Intel launch Sandy Bridge, the second generation of Intel processors Intel also releasing their new chipsets.
Sandy Bridge can be used only on the new chipset, which is Intel P67, H67, H61, Q67, and B65 (for desktop platforms). To accommodate this new processor, Intel also release a new socket LGA1155 (not LGA1156 which has come first). This Socket can't be used on LGA1156 processors. However, we can use the HSF socket LGA1156 on this LGA1155. And the Sandy Bridge architecture itself is also different because Intel changed this to get better performance and less power consumption.
Intel said that the previous chipset is "stuck" so they change the architecture. This architecture change affects newer socket to match the Sandy Bridge.
Sandy Bridge processors that can used with Intel P67 chipset are Intel Core i3, i5, i7 2xxx series (ex Intel Core i7-i5-2500). Intel P67 itself is a single chipset, this means combining the northbridge and southbridge chips together. Now Intel also supporting SATA3 port (up to 6 Gbps).
Bug
Initial presence of Intel P67 chipset had experienced many problems, because there is bug that made Intel shock. Officially, Intel explained that they have discovered a bug for SATA ports on Intel chipsets P67/H67 series, chipset has 4 SATA2 ports (3 Gbps) and 2 ports SATA3 (6 Gbps), each port have separate PPL.
The problem occurs on SATA2 port(3 Gbps Clock PPL), which caused by too high voltage, causing current leakage. This bug decreasing performance and stability on the port. But, the SATA3 port didn't have similar problem. This bug only present in the beginning motherboard revision.
Intel immediately releasing an improved version chipset to close this bug. Improvement was marked with revision B3. If you have this version with bug, you can contact directly the seller or access intel support site (http://www.intel.com/support/feedback.htm?group=chipset).
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