** Official ** Gigabyte UD3 P45 Series -- EP45-UD3 / EP45-UD3R / EP45-UD3P

[Ghostleader]

Try the value that I have made in bold, it shouldn´t be far off.

I'm sure that's where I'm getting stuck. I need some help to get started with some pointers and I'll tweak the rest myself. Here are my settings so far. whenever I change the reference and vtt my pc is either completely unstable (won't start) or will run linpack for 2 tests after which it will error.

Any advise on how to set up the references is appreciated. thanks


Q9550 C1(trying to reach stable 4.0, goal 4.2ghz)
******Motherboard Intelligent Tweaker (M.I.T.)******

Robust Graphics Booster.........................[ Auto ]
CPU Clock Ratio.................................[ 8 ]
Fine CPU Clock Ratio...........................[0]
CPU Frequency 4.00GHz...........................[ 500 ]

******Clock Chip Control******

CPU Host Clock Control..........................[ Enabled ]
CPU Host Frequency (Mhz)........................[ 500 ]
PCI Express Frequency (Mhz).....................[ 100 ]
C.I.A 2.........................................[ Disabled ]

******Advanced Clock Control******

CPU Clock Drive.................................[ 900mv ]
PCI Express Clock Drive.........................[ 900mv ]
CPU Clock Skew..................................[ 0ps ]
MCH Clock Skew..................................[ 50ps ]

******DRAM Performance Control******

Performance Enhance.............................[ Standard ]
Extreme Memory Profile (X.M.P)..................[ Disable]
(G) MCH Frequency Latch.........................[400] If you use 400 compare to 333, you can go one lower with "Static Read Value"(tRD, aka Performance Level) when you is done OC that CPU
System Memory Multipler.........................[ 2.00? ]
Memory Frequency 1066...........................[ 1000 ]
DRAM Timing Selectable..........................[ Manual ]

CAS Latency Time................................[ 5 ]
tRCD............................................[ 5 ]
tRP.............................................[ 5 ]
tRAS............................................[ 15 ]



******Motherboard Voltage Control******

Load-Line Calibration...........................[ Enabled]
CPU Vcore [ 1.365 ]You may need more
CPU Termination [ 1.280 ]~1-28-1,36
CPU PLL [ 1.570 ]
CPU Reference [ ~0,810 ] Around 63,5% of CPU Term should work with a 45nm quad, maybe one step up or down from that should do it

MCH Core [ 1.380 ] Seems a bit on the high side, try around 1,32-1,36
MCH Reference [ ~0,890] Around 70% of CPU Term should work with a 45nm quad, one step up or down from that should do it
MCH/DRAM Refernce [ Auto ]
ICH I/O [ 1.500 ]
ICH Core [ 1.100 ]

DRAM Voltage [ 2.200 ]
DRAM Termination [ Auto ]
Channel A Ref [ Auto ]
Channel B Ref [ Auto ]

******Advanced BIOS Features******

Limit CPUID Max to 3............................[ Disabled]
No-Execute memory Protect.......................[ Disabled ]
CPU Enhance Halt (CIE)..........................[ Disabled ]
CPU Thermal Monitor.............................[ Enabled]
CPU EIST Function...............................[ Disabled ]
Virtualization Technology.......................[ Disabled]

Edit: with these current settings Linpack will give an error after the first test is done.