Did a quick test yesterday.

Intel DX38BT bios 1308
FSB 400MHz (3.2GHz)
VCore default, 1.148v in BIOS hardware monitor
Power Slope: Off
Watchdog: Off
VFSB: 1.200v
VMCH: 1.250v

400MHz ref / 1600MHz mem / 1.82vdimm (super talent ddr3-1600 2x1GB)
7-7-7-20 (800MHz)

So far seems prime95 stable.
333Mhz ref /1333Mhz mem cannot boot, have to use 400 strap.