Odd problem overclocking EP45-UD3P

[Xyrd]

Setup:
Core 2 Duo e6400
2x 1G Corsair DD2 800 5-5-5-12 1.9V
550W PSU

On my old Asus P5B, I overclocked my e6400 to 8x400MHz with 1.4V vCore

On the EP45-UD3P, strange things happen. Tested each one of these settings individually, then together. This works:
vCore 1.5V (core temp is 31C at that voltage)
LLC enabled/disabled
5-5-5-12
Mem 1.9V
Multiplier 8
FSB 366MHz

When I put it to 400MHz, I get the constant short beeps that mean "power error" and have to reset the CMOS. Doesn't matter what combination of settings I use - the moment I hit 400MHz, it becomes unhappy. Anybody know what this problem is and/or what I can do to fix it?

Thanks.

[godto]

Re: Odd problem overclocking EP45-UD3P

it's your ram ..... set the static to 9-11 ... and sub timing looser ... after it run .. then tweak latter

[Xyrd]

Re: Odd problem overclocking EP45-UD3P

The problem happens regardless of whether I set the memory timings/voltage or not.

As a note, it's perfectly stable at 8x366 right now.

[Lsdmeasap]

Re: Odd problem overclocking EP45-UD3P

When you use 400 FSB what strap are you using for your ram? And what Static tRead value, that is likely the issue

Since you know you was stable at 1.4V on your old board, was that BIOS setting or actual shown by CPU-z? Your BIOS setting will be more in this board so adjust accordingly so you can get 1.4 actual again. And you will need to manually set PLL and Vtt (Termination) PLL 1.5-1.6, Vtt 1.25-1.45

If you want, please link me to your ram and fill this out with your exact settings you are try to use at 400 FSB and I will advise back >>>

This is Just a template I use to ask people their settings, pay no attention to the numbers in it, replace with yours

[b][u]MB Intelligent Tweaker(M.I.T.)[/u][/b]
Robust Graphics Booster ...............: 
CPU Clock Ratio ..........................: 
Fine CPU Clock Ratio.....................:.0
CPU Frequency ...........................: 


[b][u]Clock Chip Control [/u][/b]
[b][u]Standard Clock Control[/u][/b]
CPU Host Clock Control..................: [Enabled] 
CPU Host Frequency (Mhz) ............: Mhz
[B]PCI Express Frequency (Mhz) .........:Set to 100[/B]

C.I.A.2 .................................:[Disabled]


[b][u]Advanced Clock Control [Press Enter][/u][/b]
CPU Clock Drive...........................: <<< 
PCI Express Clock Drive.................: <<< 
CPU Clock Skew (ps)....................: <<< 
MCH Clock Skew (ps)...................: <<< 


[b][u]DRAM Performance Control[/u][/b][u][/u]
[B]Performance Enhance...................: [STANDARD][/B]
Extreme Memory Profile (X.M.P.).....: Disabled
(G)MCH Frequency Latch...............: [Auto]
System Memory Multiplier ..............: 
Memory Frequency (Mhz) ..............: 
DRAM Timing Selectable ................: [Manual]

[b]Standard Timing Control[/b]
CAS Latency Time........................
tRCD .........................................
tRP'...........................................
tRAS..........................................

[b][u]Advanced Timing Control[/u][/b]
tRRD...........................................
tWTR..........................................
tWR............................................
tRFC...........................................
tRTP...........................................
Command Rate (CMD) ....................:2

[u][b]Driving Strength Profiles[/b][/u][b][/b]
Driving Strength ............................

[b]Channel A[/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

[b]Channel B[/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

[b][U]Motherboard Voltage Control[/U][/b][U][/U]
Voltage Type.………... Manual
[b]CPU[/b]
CPU Vcore….……….........................:
CPU Termination…..... 1.200V*.......: <<< Leave
CPU PLL…………………....1.500V*.......: << Please set to stock, Auto overvolts this way to much

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 

[b]MCH/ICH[/b]
MCH Core…………….....1.100V...........: << 
MCH Reference….…….0.800V...........; <<< Leave
MCH/DRAM Ref.…......0.900V...........: <<< Leave
ICH I/O……………….....1.550V............: <<< Leave
ICH Core…………...……1.100V............: <<< Leave

[b]DRAM[/b]
DRAM Voltage ……....1.800V............: 
DRAM Termination .…0.900V............: <<< Leave
Channel A Reference 0.900V............: <<< Leave
Channel B Reference 0.900V............: <<< Leave

[b][U]Advanced Settings[/U][/b][U][/U]
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

[b][U]Integrated Peripherals[/U][/b][U][/U]
Legacy USB Storage Detect ..............[Disabled] *Note* Must be enabled to flash from USB

[Xyrd]

Re: Odd problem overclocking EP45-UD3P

Thanks a ton for posting that. It made me take a detailed second look at everything, and I found my problem.
The System Memory Multiplier was sending my Memory Frequency skyrocketing. Switched it to 2.000D, stayed at 800MHz, and all is well.

Thanks again!

[Lsdmeasap]

Re: Odd problem overclocking EP45-UD3P

Glad to see you found your issue! Post back anytime