New PC, i7 920 D0 or 2600k?

[Sam_oslo]

920 (like other hot and power-hungry 45nm CPUs) is dead, finito, forget it.

You should either get a expensive 6-core 32nm, or 2006k, there is no other good option today.

If you can find a SB MB, go and get it. Use the SATA3.0-ports (or if you need many good ports, a PCIe add-on card) until you can get a refunds or replacement for your MB in about 3 months.