Official DFI LanParty UT X38-T2R(and LT) Discussion/Review/Overclock/Guide Thread

[carmatic]

Here are my settings for 440x8 266/667 tRD6, 24/7 stable:

CPU Feature
- Thermal Management Control: Enabled
- PPM(EIST) Mode: Enabled
- Limit CPUID MaxVal: Disabled
- CIE Function: Auto
- Excecute Disable Bit: Enabled
- Virtualization Technology: Enabled
- Core Multi-Processing: Enabled

Exit Setup Shutdown: Mode 2
Shutdown after AC Loss: Disabled
CLOCK VCO divider: Auto
CPU Clock Ratio Unlock: Enabled
CPU Clock Ratio: 8
- Target CPU Clock:
CPU Clock: 440
Boot Up Clock:
DRAM Speed: 266/667
- Target DRAM Speed:
PCIE Clock: 100mhz
PCIE Slot Config: 1X 1X

CPU Spread Spectrum: Disabled
PCIE Spread Spectrum: Disabled
SATA Spread Spectrum: Disabled

Voltage Settings
CPU VID Control: Auto (1.2325)
CPU VID Special Add Limit: Enabled
CPU VID Special Add: Auto
DRAM Voltage Control: 2.0V
SB Core/CPU PLL Voltage: 1.510V
NB Core Voltage: 1.504V
CPU VTT Voltage: 1.210V
Vcore Droop Control: Enabled
Clockgen Voltage Control: 3.45V
GTL+ Buffers Strength: Strong
Host Slew Rate: Weak
MCH RON Offset Value: 00
MCH RTT Offset Value: 00
MCH Slew Rate Offset Value: 00
MCH VREF 1 Value: 00
MCH VREF 2 Value: 00
MCH VREF 3 Value: 80
GTL REF Voltage Control: Enabled
x CPU GTL1/3 REF Volt: 85
x CPU GTL 0/2 REF Volt: 83
x North Bridge GTL REF Volt: 96

DRAM Timing
- Enhance Data transmitting: Fast
- Enhance Addressing: Fast
- T2 Dispatch: Enabled

Clock Setting Fine Delay
DRAM CLK Driving Strength: Level 6
DRAM Data Driving Strength: Level 8
Ch1 DLL Default Skew Model: Mode 0
Ch2 DLL Default Skew Model: Mode 0

Fine Delay Step Degree: 5ps

Ch1 Clock Crossing Setting: Auto
- DIMM 1 Clock fine delay: Current
- DIMM 2 Clock fine delay: Current
- Ch 1 Command fine delay: Current
- Ch 1 Control fine delay: Current


Ch2 Clock Crossing Setting: Auto
- DIMM 3 Clock fine delay: Current
- DIMM 4 Clock fine delay: Current
- Ch 2 Command fine delay: Current
- Ch 2 Control fine delay: Current

Ch1Ch2 CommonClock Setting: Auto

Ch1 RDCAS GNT-Chip Delay: Auto
Ch1 WRCAS GNT-Chip Delay: Auto
Ch1 Command to CS Delay: Auto

Ch2 RDCAS GNT-Chip Delay: Auto
Ch2 WRCAS GNT-Chip Delay: Auto
Ch2 Command to CS Delay: Auto

CAS Latency Time (tCL):5
RAS# to CAS# Delay (tRCD):5
RAS# Precharge (tRP):5
Precharge Delay (tRAS):15
All Precharge to Act: 6
REF to ACT Delay (tRFC): 54
Performance LVL (Read Delay) (tRD): 6

Read delay phase adjust: Enter

Ch1 Read delay phase (4~0)
- Channel 1 Phase 0 Pull-In: Auto
- Channel 1 Phase 1 Pull-In: Auto
- Channel 1 Phase 2 Pull-In: Auto
- Channel 1 Phase 3 Pull-In: Auto
- Channel 1 Phase 4 Pull-In: Auto

Ch2 Read delay phase (4~0)
- Channel 2 Phase 0 Pull-In: Auto
- Channel 2 Phase 1 Pull-In: Auto
- Channel 2 Phase 2 Pull-In: Auto
- Channel 2 Phase 3 Pull-In: Auto
- Channel 2 Phase 4 Pull-In: Auto

MCH ODT Latency: Auto
Write to PRE Delay (tWR): 14
Rank Write to Read (tWTR): 11
ACT to ACT Delay (tRRD): 3
Read to Write Delay (tRDWR): 8
Ranks Write to Write (tWRWR): 6
Ranks Read to Read (tRDRD): 6
Ranks Write to Read (tWRRD): 5
Read CAS# Precharge (tRTP): 3
ALL PRE to Refresh: 6

Raising CPU PLL may lead to a very quick CPU degradation. Also keep your VTT < 1.35V for 24/7.

thanks for sharing these settings, what ram do you have? my pair of 4gb ocz reaperx pc8000 doesnt even boot at the next higher divider which makes it go at 1110mhz... i bought mine at the beginning of the year, ive read that the new versions have different ICs on them and from what i can tell they go much faster than the sticks i have

i will lower the sb voltage and see if it will still keep priming stable... are 45nm's more susceptible to damage from sb core voltage than 65nm's?

now that i know the gtl and vtt combination for my q9450, i think i can try to start lowering the vtt and bring the gtl settings down one by one... before this it was majorly unstable and any gtl settings ive tried only made it crash quicker or slower... but for now i consider my job to be done, that is to get my computer running at the speed it used to run during the winter, like the time before i had to take the q6600 out because its overheating, wont even encode mp3's without crashing, and now i am running prime at 55 degrees load instead of 75 degrees load

and one last question, maybe im just abit out of touch but i thought c1e and eist made overclocking impossible?