Lads,
I'm stumped. This is a call to action. Rise up and lend a hand to your fellow man. Build details are below. Here's the issue I'm seeing:
I have an e8400 oc'd to 4ghz and it
seems stable (8hrs in OCCT and prime95, runs fine in super Pi, MemTest, etc). It never throws BSOD, but fairly often it won't POST (perhaps as often as 30% of the time). I'll get the long system beep and then it'll start up at default speeds and run just fine. If I then restart and go into BIOS, under M.I.T, I see a popup message that says "The system has experienced boot failures because of overclocking or changes to voltages". I can then exit and save the BIOS with the overclocked values and boot up successfully. I've got no clue why POSTing would fail when the PC seems stable in practice.
I would really appreciate some help here. One thing I read in a different forum post
http://www.overclock.net/intel-mothe...king-help.html
said that the 2.40B strap is bugged - not sure if that would cause this issue.
Another thing to note. I've looked around the net for general OC advice for my board and cpu and it seems that other people require much higher voltages (for example:
http://www.tomshardware.com/forum/25...ility-problems). If I go anywhere near the VCore suggested there, my temps go off the charts. Just wanted to mention that before someone says my VCore looks way too low.
BIOS (Award F8) settings:
MB Intelligent Tweaker(M.I.T.)
Robust Graphics Booster ...............:Auto
CPU Clock Ratio ..........................:9x
Fine CPU Clock Ratio.....................:.0
CPU Frequency ...........................:4.00 (445x9)
Clock Chip Control
Standard Clock Control
CPU Host Clock Control..................: [Enabled]
CPU Host Frequency (Mhz) ............: Mhz 445
PCI Express Frequency (Mhz) .........:100
C.I.A.2 .................................:[Disabled]
Advanced Clock Control [Press Enter]
CPU Clock Drive...........................: 800mv
PCI Express Clock Drive.................: 900mv
CPU Clock Skew (ps)....................: 0ps
MCH Clock Skew (ps)...................: 0ps
DRAM Performance Control
Performance Enhance...................: [STANDARD]
Extreme Memory Profile (X.M.P.).....: [Auto]
(G)MCH Frequency Latch...............: 330
System Memory Multiplier ..............: 2.40B
Memory Frequency (Mhz) ..............: 1068
DRAM Timing Selectable ................: [Manual]
Standard Timing Control
CAS Latency Time........................ 5
tRCD ......................................... 5
tRP'........................................... 5
tRAS.......................................... 15
Advanced Timing Control
tRRD........................................... 4
tWTR.......................................... 4
tWR............................................ 13
tRFC........................................... 68
tRTP........................................... 4
Command Rate (CMD) ....................:2
Driving Strength Profiles
Driving Strength ............................ All items Auto
Channel A
Static tRead Value.........................:8
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
Channel B
Static tRead Value.........................:8
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
Motherboard Voltage Control
CPU
Load-Line Calibration..................:[Enabled]
CPU Vcore….……….........................: 1.18750V (default was 1.116250V)
CPU Termination…..... 1.200V
CPU PLL…………………....1.500V
CPU Referen.…………....0.76
MCH/ICH
MCH Core…………….....1.100V
MCH Reference….…….0.76V
MCH/DRAM Ref.…......1.00V (was 0.90V)
ICH I/O……………….....1.50V
ICH Core…………...……1.100V
DRAM
DRAM Voltage ……....2.1V
DRAM Termination .…1.05V
Channel A Reference 1.05V
Channel B Reference 1.05V
Advanced Settings
Limit CPUID Max. to 3.....................: [Disabled]
No-Execute Memory Protect............: [Enabled]
CPU Enhanced Halt (C1E)................: [Disabled]
C2/C2E State Support....................: [Disabled]
x C4/C4E State Support..................: [Disabled]
CPU Thermal Monitor 2(TM2) ...........: [Enabled]
CPU EIST Function.........................: [Disabled]
Virtualization Technology................: [Enabled]
