Intel TSX work only in single socket like i-7 4770?

[YangHun_P_]

Can I use tsx instruction in 2 socket machine?

[Roman_D_Intel]

yes. Data conflicts are detected through the cache coherence protocol (that works also through QPI). It is documented in the Intel® 64 and IA-32 Architectures Optimization Reference Manual (Chapter 12 - Intel TSX recommendations).

Best regards,

Roman