Here's the current list of Errata's from June: http://www.intel.com/content/dam/www/public/us/en/documents/specification-updates/4th-gen-core-family-desktop-spe

Here's the current list of Errata's from June: http://www.intel.com/content/dam/www/public/us/en/documents/specification-updates/4th-gen-core-family-desktop-specification-update.pdf http://www.intel.com/content/dam/www/public/us/en/documents/... I see two about TSX: HSD87 X No Fix Intel® TSX Instructions May Cause Unpredictable System behavior Problem: Under certain system conditions, Intel TSX (Transactional Synchronization Extensions) instructions may result in unpredictable system behavior. Implication: Due to this erratum, use of Intel TSX may result in unpredictable behavior. Workaround: It is possible for the BIOS to contain a workaround for this erratum. Status: For the steppings affected, see the Summary Table of Changes HSD114 X No Fix Intel® TSX Instructions May Cause Unpredictable System behavior Problem: Under a complex set of internal timing conditions and system events, software using the Intel TSX (Transactional Synchronization Extensions) instructions may observe unpredictable system behavior. Implication: This erratum may result in unpredictable system behavior. Intel has not observed this erratum with any commercially available system. Workaround: It is possible for the BIOS to contain a workaround for this erratum. Status: For the steppings affected, see the Summary Table of Changes HSD114 above seems to be the bug from the techreport article.