E8400+EP45-DS3 overclocked gaming issue..NEED HELP PLZ!!

[jonathanchn]

my system specs:
CPU:Intel core duo E8400 3ghz, OCd to ghz
VGA:Nvidia gtx 260
MB:Gigabyte Ep45-DS3
Transcend DDr2-800 2gb x2
HD:320gb
Power:550watts
AeroflowFx 26 cooler

Okay my bios settings
9x445
MCH Frequency latch =400 MHZ
2.00d multiplier
5-5-5-15
CPU voltage:1.40v

so I've successfully overclocked my cpu to 4ghz but what's odd is that I stress tested my computer with orthos and it lasted over eight hours without errors, but when I launched the Crysis game something very dissapointing appeared, when I get to the very first explosion scene, my computer reboots....now I tested other games that are less detailed in graphics such as NBA 2k9, MLb, dark sector, and there were no reboots or errors... even Far Cry 2 ran successfully...but then another abortive result came up, when playing WATCHMEN, my computer reboots again!

I'm kind of callow in overclocking, so can anyone give me some advises?

[Nickel020]

Re: E8400+EP45-DS3 overclocked gaming issue..NEED HELP PLZ!!

I'm assuming you that without OC the PC works fine?

Prime95/Orthos etc. stability does not mean that the PC is 100% stable, the fact that it is stable in Prime does mean that you're not far away from complete stability though.

My guess is that this is the PSU. When you only stress your CPU your PSU isn't nearly stressed as much as when you run a game where CPU and GPU are working full-time.
If you ahve a no-name 550W PSU then that's very likely your problem right there.

[jonathanchn]

Re: E8400+EP45-DS3 overclocked gaming issue..NEED HELP PLZ!!

really? so you think the psw is the problem?
My psu brand is HEC and it's based in Taiwan don't know if you've heard of it?
well it's really a pain in the ass not being able to stablize my OC....
I just wanna enjoy extreme gaming after school....don't wanna worry about this crap when I'm asleep cuz I'm really suffering from insomnia recently...
I've researched a few posts related to my board and cpu and I've keyed in the same data they recommended which they said would bring optimal results, but then my pc wouldn't even boot normally...

MB Intelligent Tweaker(M.I.T.)
Robust Graphics Booster ...............: Auto or Fast
CPU Clock Ratio ..........................: 9
Fine CPU Clock Ratio.....................:.0
CPU Frequency ...........................: 4.05


Clock Chip Control
Standard Clock Control
CPU Host Clock Control..................: [Enabled]
CPU Host Frequency (Mhz) ............: 450Mhz
PCI Express Frequency (Mhz) .........:Set to 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 ..............: 2.00D (2.00B may work for you as well, it would be better but is harder to get stable often at high FSB)

Memory Frequency (Mhz) ..............: 900Mhz
DRAM Timing Selectable ................: [Manual]

Standard Timing Control
CAS Latency Time........................5
tRCD .........................................5
tRP'...........................................5
tRAS..........................................15/18

Advanced Timing Control
tRRD...........................................3-4
tWTR..........................................3-5
tWR............................................4-6
tRFC...........................................52-62
tRTP...........................................3-5
Command Rate (CMD) ....................:2

Driving Strength Profiles
Driving Strength ............................800/1066 (Test both)

Channel A
Static tRead Value.........................:6/7-10 333/B MCH - 8/9-12 400/D MCH
tRD Phase0 Adjustment...................:<<< Leave for all below as well
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.........................:6/7-10 333/B MCH - 8/9-12 400/D MCH
tRD Phase0 Adjustment...................:<<< Leave for all below as well
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
Voltage Type.………... Manual
CPU
CPU Vcore….……….........................:1.25-1.36 (All up to your chip)

CPU Termination…..... 1.200V*.......: <<< 1.2-1.36 (1.2-1.28 likely plenty)
CPU PLL…………………....1.500V*.......: << 1.5-1.58

CPU Referen.…………....0.755V*.......: <<< .64% Of Vtt (Termination above) Auto Will set this correctly

CPU Reference2………,,0.800V*.......:<<< .67% Of Vtt (Termination above) Auto Will set this correctly

MCH/ICH
MCH Core…………….....1.100V...........: << 1.2-1.3 (1.22-1.26 likely good)
MCH Reference….…….0.800V...........; <<< Leave
MCH/DRAM Ref.…......0.900V...........: <<< Leave
ICH I/O……………….....1.550V............: <<< 1.5-1.6
ICH Core…………...……1.100V............: <<< 1.1x-1.2

DRAM
DRAM Voltage ……....1.800V............: 1.8-1.9V (Set 1.9V for now, you can try lower later)

DRAM Termination .…0.900V............: <<< Leave
Channel A Reference 0.900V............: <<< Leave
Channel B Reference 0.900V............: <<< Leave

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................: [Disabled] Enabled if you use Vmware/Virtual PC

Integrated Peripherals
Legacy USB Storage Detect ..............[Disabled] *Note* Must be enabled to flash from USB
I would be more than happy if you could help me out on this one, thx alot!