@fatguy
my BIOS setting

MB Intelligent Tweaker(M.I.T.)
Robust Graphics Booster ...............: Auto or Fast
CPU Clock Ratio ..........................: 8
CPU Frequency ...........................: 3.0


Clock Chip Control
Standard Clock Control
CPU Host Clock Control..................: [Enabled]
CPU Host Frequency (Mhz) ............: 375Mhz
PCI Express Frequency (Mhz) .........:100

C.I.A.2 .................................:[Disabled]


Advanced Clock Control [Press Enter]
CPU Clock Drive...........................: <<< 800
PCI Express Clock Drive.................: <<< 900
CPU Clock Skew (ps)....................: <<<
MCH Clock Skew (ps)...................: <<<


DRAM Performance Control
Performance Enhance...................: [STANDARD]
Extreme Memory Profile (X.M.P.).....: Disabled
(G)MCH Frequency Latch...............: [Auto]
System Memory Multiplier ..............: 3.00A
Memory Frequency (Mhz) ..............: 1050
DRAM Timing Selectable ................: [Manual]

Standard Timing Control
CAS Latency Time........................5
tRCD .........................................5
tRP'...........................................5
tRAS..........................................15


Advanced Timing Control
tRRD...........................................3
tWTR..........................................5
tWR............................................6
tRFC...........................................56
tRTP...........................................4
Command Rate (CMD) ....................:2

Driving Strength Profiles
Driving Strength ............................1066

Channel A
Static tRead Value.........................:10
tRD Phase0 Adjustment...................:Auto
tRD Phase1 Adjustment...................:Auto
tRD Phase2 Adjustment .................:Auto
tRD Phase3 Adjustment..................:Auto
Trd2rd(Different Rank)....................:Auto
Twr2wr(Different Rank)...................:Auto
Twr2rd(Different Rank)...................:Auto
Trd2wr(Same/Diff Rank)..................:Auto
Dimm1 Clock Skew Control...............:Auto ps
Dimm2 Clock Skew Control...............:Auto ps

Specs:
Intel Q6600 @3.0 ghz
Gigabyte EP45-UD3R
Corsair Dominator 2x1gb 1066mhz
Palit GTX260 Sonic
Silverstone DA750
WD Raptor 74GB
WD Caviar Black 640GB