I trough Toledo only dual core.

@d0minat0r
Depends on the stepping of the chip.
@Antinomy covered this sometime ago and at first I too didn't know the difference but he cleared all that up.

This is one thread that covers the subject.
ultra_code - Athlon 64 4000+ (Toledo) @ 3228.5MHz - 452 cb Cinebench - 2003 - Result Discussions - HWBOT Community Forums

ATM I can't find the exact article/thread he made about it that explains it in detail so he'll have to link you to it.

Article is titled Hammer Time