Intel: main points of Sandy Bridge chipset flaw:
Chipset: The issue is in Sandy Bridge's Cougar Point chipset, not the main Sandy Bridge processor. Most Sandy Bridge systems sold to date are quad-core laptops, though some desktop PCs have been shipping too. Potentially affected systems have been shipping only since January 9.
Issue: Affects SATA ports 2 through 5, not ports 0 and 1. Most laptops have two SATA devices, such as a hard disk drive and optical drive that would be using the unaffected ports 0 and 1. That said, Sandy Bridge-based systems with more than a couple of SATA devices could potentially be affected. The data itself is not affected. So, if a consumer had an affected system, data could be accessed by moving the storage device to another system or a working port.
How issue was discovered: Last week customers started telling Intel that there was an issue. As Intel stressed the part, then Intel's labs started seeing a failure to access ports 2 through 5. The Intel stress test simulated time passing and it showed that over time this issue could come up.
How many Sandy Bridge chipsets shipped to date: 8 million. But Intel claims relatively few are in customers' hands. Most of those are in the sales channel and will be pulled out of the channel. Intel is supporting PC makers in this effort.
Issue fixed in new silicon: Intel has corrected the design issue--characterized by Intel as a "circuit design oversight"--and has begun manufacturing a new version of the chipset which will resolve the issue.
Delay of new Sandy Bridge chips: Intel expects to begin delivering the updated version of the chipset to customers in late February and expects full volume recovery in April.
Read more:
Intel's Sandy Bridge chipset flaw: The fallout | Nanotech - The Circuits Blog - CNET News