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

[mreld3r]

Hello, first time OC'er here having some fun with my UD3P and Q9650. I've been reading the Noob OC guides as well as viewing other peoples specs/settings to help get me started. I OC'd to 3.6 and ran Prime small blend overnight, one of the cores had an error ("Rounding was 0.49..., expected less than 0.4") after 2 hours, all of the other cores made it through the night. I also ran memtest for 90 minutes with zero errors. Here are my settings:

MB Intelligent Tweaker(M.I.T.) 
Robust Graphics Booster ...............: Auto 
CPU Clock Ratio ...........................: 9
CPU Frequency............................: 3.60GHz

Clock Chip Control 
Standard Clock Control 
CPU Host Clock Control..................: [Enabled] 
CPU Host Frequency (Mhz) .............: 400Mhz 
PCI Express Frequency (Mhz) .........:100 
C.I.A.2 ..................................:[Disabled] 

Advanced Clock Control 
CPU Clock Drive...........................: 800mV 
PCI Express Clock Drive.................: 900 mV
CPU Clock Skew (ps)....................:  0ps
MCH Clock Skew (ps)....................: 0ps

DRAM Performance Control 
Performance Enhance...................: [STANDARD] 
(G)MCH Frequency Latch...............: [Auto] 
System Memory Multiplier ...............: 2.00B          ***2.00D***
Memory Frequency (Mhz) ..............: 800*.......800
DRAM Timing Selectable .................: [Manual]
 
Standard Timing Control 
CAS Latency Time........................5*......5
tRCD .........................................5*......5
tRP'...........................................5*......5
tRAS........................................15*......5              ***15 here***

Advanced Timing Control - I didn't touch anything in here, everything is set to Auto.

Motherboard Voltage Control
Load-Line Calibration.....................: Enabled
CPU Vcore….……….......1.25000V*...: 1.35 
CPU Termination…..... 1.200V*.......: 1.2            ***1.34 here***
CPU PLL…………………....1.500V*.......: 1.5 
CPU Reference.……….....0.76V*.......: .76 

MCH/ICH MCH Core….1.100V*...........:1.24          ***1.34 here***
MCH Reference….…….0.76V*.............: .76
MCH/DRAM Ref.…......0.900V*...........: Auto
ICH I/O……………….....1.550V..............: Auto
ICH Core…………...……1.100V..............: Auto

DRAM DRAM Voltage …1.800V*............: 1.84 
DRAM Termination ..…0.900V*.............: .92             ***NORMAL here***
Channel A Reference 0.900V*.............: .92              ***NORMAL here***
Channel B Reference 0.900V*.............: .92              ***NORMAL here***

Advanced Settings 
Limit CPUID Max. to 3.....................: [Disabled] 
No-Execute Memory Protect............: [Disabled] 
CPU Enhanced Halt (C1E)................: [Disabled] 
C2/C2E State Support....................: [Disabled] 
x C4/C4E State Support..................: [Disabled] 
CPU Thermal Monitor 2(TM2) ...........: [Disabled] 
CPU EIST Function.........................: [Disabled] 
Virtualization Technology................: [Disabled]

Computer Specs:
Q9650 in EP45-UD3P w/ Xigmatek HDT-S1823 HSF
4 x 2 Gb Gskill DDR2 800 / 5-5-5-15 / 1.8-1.9v
Quadro FX 1500 GPU
Corsair TX750W PSU

Any advice on my settings are greatly appreciated. I'm certainly no expert but I think my vcore is a tad high for a 3.6 OC, I'm sure I could lower it but I was just trying to give myself headroom to OC higher, and my temps were fine.... oh speaking of:

3.6 OC
idle temps: 33/33/25/31
load temps: 60/58/50/50

Should I loosen my RAM timings? 5-7-7-20?
Should I specify the (G)MCH Freq Latch? My options are 266, 200, 333 and 400.
I really have no idea what the MCH and ICH voltages should be... I based mine off of what I saw other people had.
Pretty much same thing with the RAM voltages, my RAM has 1.8-1.9 on the box so I just chose 1.84?!?

Thank you for your time!!

Change the things noted by the ***; if i didnt overlook anything "that" should get you stable up to approx 4 ghz. Try to keep your Vcore, Vtt, and MCH core pretty close to each other. Also to set your refs; set your vtt to 1.2, then set your mch/ref to .76 (or whatever the default is) then set your cpu/ref to .76 (default).
Then; increase your VTT (cpu termination) to whatever you want.
Usually one click or so below your Vcore. Your CPU and MCH refs will change when you change your VTT. You may need to adjust them later, but this should get your started. After you have a good overclock, you can try to lower the voltages one at a time, while testing each change.
Set your Vcore and Vtt with prime95 small fft, and mch core/refs with memtest.
With these voltages; you can start @ 3.6Ghz and then see how far you can go up before you need to change anything. This should get you started anyway.

OOPS,,,,You got lots o'ram...You may need more MCH core for that and also your DRAM/voltage might need to be increased also,
good luck
Im not familar with that ram, but it may need 2 or 2.1 volts ??? but dont try it until someone else (more familiar with that particular ram) chimes in