Need Advise on E8400

[cheetah999]

Hi all,
I need to troubleshoot an Intel E8400 (Revision E0) and a Gigabyte GA-EP45-UD3P bumped up to 4.0Ghz. Booting up to desktop and running the Prime95 for a couple of hours without any problem. However, when I started using the browser it gives me the blue screen with "Dumping Physical Memory to Disk" and rebooted. I was wondering if anyone can point out my error/s. My specs are below. Thanks in advance.

Spec:
 Intel Core 2 Duo E8400 Wolfdale 3.0GHz LGA 775
(w/ Tuniq Tower 120 Universal CPU Cooler)
 Gigabyte GA-EP45-UD3P ATX Intel Motherboard
 Corsair XMS2 8GB (4 x 2GB) DDR2 SDRAM 800 (PC2 6400)
 Hitachi Deskstar 1TB 7200rpm SATA
 Hitachi Deskstar 1TB 7200rpm SATA
 SAMSUNG Spinpoint F1 1TB 7200rpm SATA
 Seagate Barracuda SATA 300gig 7200rpm
 Seagate Barracuda 160gig 7200rpm (IDE)
 EVGA GeForce GTX 260 Core 216 Superclocked 896MB Video Card
 Thermaltake W0099RU ATX12V 250 Watts (for video card)
 Creative Sound Blaster Audigy 2 ZS w/Firewire
 Pioneer 20X CD/DVD SATA Burner
 Windows 7 x64 Ultimate
 Sceptre 32" 1080p 60Hz LCD HDTV X328BV-FHD
 Coolmax CP-500T (AP-600X) EPS12V 575W Power Supply
 XCLIO Blackhawk Advanced ATX Full Tower Extreme Cooling Case

SPECS:
CPU: Intel core2 Duo E8400 Wolfdale 3.0Ghz @ 4.0Ghz [Revision: E0]
MOB: Gigabyte GA-EP45-UD3P
RAM: 8GB (4 x 2GB) Corsair XMS2 DDR2 SDRAM 800 (PC2 6400)
EVGA GeForce GTX 260 Core 216 Superclocked 896MB Video Card
Tuniq Tower 120 Universal Cooler
OS: 64Bit Windows 7 Ultimate

Disabled "Limit CPUID Max. to 3"
Disabled "CPU Enhanced Halt (C1E)"
Disabled "CPU Thermal Monitor 2(TM2)"
Disabled "CPU E1ST Function"
Changed "Init Display First" to "PEG"

MB Intelligent Tweaker (M.I.T.)
Robust Graphics Booster..................................[Auto]
CPU Clock Ratio..........................................[9X]
Fine CPU Clock Ratio.....................................[0x0]
CPU Frequency............................................[445 X 9]

>>Clock Chip Control
Standard Clock Control
CPU Host Clock Control...................................[Enabled]
CPU Host Frequency (Mhz).................................[445]
PCI Express Frequency (Mhz)..............................[100]
C.1.A.2..................................................[Disabled]

Advanced Clock Control [Press Enter]

>>DRAM Performance Control
Performance Enhance......................................[Standard]
(G)MCH Frequency Latch...................................[400Mhz]
System Memory Multiplier.................................[2.00B]
Memory Frequency (Mhz).....................800...........[890]

DRAM Timing Selectable...................................[Manual]
>>Standard Timing Control
CAS Latency Time.........................................[5]
tRCD.....................................................[5]
tRP......................................................[5]
tRAS.....................................................[18]
>>Advanced Timing control:
tRRD.......................................3.............[6]
tWTR.......................................3.............[6]
tWR........................................6.............[6]
tRFC.......................................52............[60]
tRTP.......................................3.............[6]
Command Rate (CMD).........................0.............[2]
>>CPU
Load-Line Calibration....................................[Disabled]
CPU Vcore..................................1.2500v.......[1.28750v]
CPU Termination............................1.200v........[Auto]
CPU PLL....................................1.500v........[Auto]
CPU Reference..............................0.760v........[0.863v]
>>MCH/ICH
MCH Core...................................1.100v........[1.200v]
MCH Reference..............................0.760v........[Auto]
MCH/DRAM Reference.........................0.900v........[0.970v]
ICH I/O....................................1.500v........[1.610v]
ICH Core...................................1.100v........[1.200v]
>>DRAM
DRAM voltage...............................1.800v........[1.940v]
DRAM Termination...........................0.900v........[Auto]
channel A Reference........................0.900v........[Auto]
channel B Reference........................0.900v........[Auto]

 

[wagex]

enable load line calibration that might fix it alone, if not give it a tiny bump on the NB, if that doesnt work, then a tiny bump on the vtt, if neither of those work... set vtt and nb back to auto and turn vcore up a notch

 

[EarthDog]

What was the Bluescreen code? What test did you run in P95? What speed is your memory running at (post CPUz screenshot of the memory and SPD tab please).

 

[Tech Tweaker]

Without any further information I blame that Coolmax power supply.

Coolmax isn't known for selling or building (I'm not sure who the OEM of Coolmax PSU's is) good or reliable power supplies.

I would recommend that you upgrade your power supply to something newer and more reliable (Corsair, most Antec's, Superflower, and Seasonic are good ones I can think of off hand). I think Coolmax stopped making that particular model (CP-500T) in 2007 or 2008.

Also, we need a bit more information on your setup. What voltage is your CPU at? What voltage do you have going to the RAM? Have you changed the voltage that is going to any of the chipsets? What speed is your memory set at with this overclock? What is your base Front Side Bus Speed and what is the effective speed of the FSB? What are your overclock settings (CPU multiplier & FSB setting in MHz)?

 

[EarthDog]

LOL, nice catch on the PSU. Yes, Coolmax's are POS.. terrible. If free tweaks do not resolve it, that is the next place I would look. And even if the free tweaks resolve it, I would get a new PSU much sooner than later.

 

[redduc900]

Assuming the RAM is Memtest86+ stable at DDR2-890 and FSB of 445MHz try increasing the VTT (FSB / CPU Termination voltage) from the current 1.2v / Auto. And the 400 strap / latch uses the "D" system memory multipliers, so in your case w/ the effective DRAM frequency at DDR2-890 (1:1 FSB : DRAM ratio) the multiplier is set to 2.00D; not 2.00B unless the strap is set to 333. Assuming the strap is indeed 400, try using the 333 / 2.00B strap instead.

 

[cheetah999]

Appreciate all the feedback everyone. Will try all your suggestions when I get home and report back with result.

Noted: PSU is ancient and needs to be replaced.

 

[EarthDog]

Its not the age so much as it is the terrible quality that generally goes with Coolmax.

 

[cheetah999]

I renewed my Bios settings and it is much better but the temperature is a bit too high; running Intel Burn Test was unsuccessful; could be my cooling system; will try with new thermal paste tomorrow. Anyway, all your advices were spot on. Really appreciated.

SPECS:
CPU: Intel core2 Duo E8400 Wolfdale 3.0Ghz @ 4.0Ghz [Revision: E0]
MOB: Gigabyte GA-EP45-UD3P
RAM: 8GB (4 x 2GB) Corsair XMS2 DDR2 SDRAM 800 (PC2 6400)
EVGA GeForce GTX 260 Core 216 Superclocked 896MB Video Card
Tuniq Tower 120 Universal Cooler
OS: 64Bit Windows 7 Ultimate

Go into Advanced BIOS Features:
1) Disable "Limit CPUID Max. to 3"
2) Disable "CPU Enhanced Halt (C1E)"
3) Disable "CPU Thermal Monitor 2(TM2)"
4) Disable "CPU E1ST Function"
5) Change the "Init Display First" to PEG (if you use a PCI Express card) and to PEG2 (if you are using the second PCI Express slot)

MB Intelligent Tweaker (M.I.T.)
Robust Graphics Booster..................................[Auto]
CPU Clock Ratio..........................................[9X]
Fine CPU Clock Ratio.....................................[0x0]
CPU Frequency............................................[445 X 9]

>>Clock Chip Control
Standard Clock Control
CPU Host Clock Control...................................[Enabled]
CPU Host Frequency (Mhz).................................[445]
PCI Express Frequency (Mhz)..............................[100]
C.1.A.2..................................................[Disabled]

Advanced Clock Control [Press Enter]

>>DRAM Performance Control
Performance Enhance......................................[Standard]
(G)MCH Frequency Latch...................................[333Mhz]
System Memory Multiplier.................................[2.00B]
Memory Frequency (Mhz).....................800...........[890]

DRAM Timing Selectable...................................[Manual]
>>Standard Timing Control
CAS Latency Time.........................................[5]
tRCD.....................................................[5]
tRP......................................................[5]
tRAS.....................................................[18]
>>Advanced Timing control:
tRRD.......................................3.............[6]
tWTR.......................................3.............[6]
tWR........................................6.............[6]
tRFC.......................................52............[60]
tRTP.......................................3.............[6]
Command Rate (CMD).........................0.............[2]
>>CPU
Load-Line Calibration....................................[Enabled]
CPU Vcore..................................1.2500v.......[1.30625v]
CPU Termination............................1.200v........[1.280v]
CPU PLL....................................1.500v........[1.570v]
CPU Reference..............................0.760v........[Auto]
>>MCH/ICH
MCH Core...................................1.100v........[1.240v]
MCH Reference..............................0.760v........[Auto]
MCH/DRAM Reference.........................0.900v........[Auto]
ICH I/O....................................1.500v........[1.570v]
ICH Core...................................1.100v........[1.100v]
>>DRAM
DRAM voltage...............................1.800v........[1.940v]
DRAM Termination...........................0.900v........[Auto]
channel A Reference........................0.900v........[Auto]
channel B Reference........................0.900v........[Auto]

 

[ShrimpBrime]

Booting up to desktop and running the Prime95 for a couple of hours without any problem. However, when I started using the browser it gives me the blue screen

I'd be running Memtest.

 

[Evilsizer]

im not sure what to hot to you is, but i would stop ocing a core 2 cpu when load temps from orthos/prime95/burn test reach 60c. according to your ss your only hitting 49c max so your still good and the chances of it being heat related not possible imo.

i would suggest bumping the ram voltage .1v up to 1.9 vs 1.8, since your hitting near DDR2-900 speeds. with timings that loose for only DDR2-800 speeds, i think your going to need it. that is assuming your errors are memory related, as i think it might be chipset/memory controller related. since the memory controller for the core 2's is still on/in the chipset. could be heat related or voltage related to the chipset, hard to say from my end. as with ocing i would always use a fan on the chipset and i would replace the tim used on the chipset cooler with AS-C.

Keep us posted please.

 

[cheetah999]

I ran prime95 on blend for 6 hours and it has remained stable. The only thing I did was bumped the dram voltage up to 1.960v. My new PSU (CORSAIR CX750 750W) should be arriving next week and pretty much with the help from this forum I was able to make the 4.0 successfully. Thank you.