Announcement

**Lsdmeasap** · 07-03-2010, 12:26 AM

Re: EP45-UD3L having truble at 4.0 GHz

I need to know some/all of your Actual settings, you have posted ranges for some where the actual value needs to be known to use, and you have memory multi 1:1 when we need to know the actual value you have set.

For now, I can tell you that if you are using 2.4V MCH Core stop that NOW!!! This will Kill your NB if it has not already done physical damage, for 4GB of ram you might need 1.2-1.3 at the most but normally lower than 1.3, 2.4 is just WAY TOO MUCH, so I hope that is a typo.

Also can you please tell me your BIOS version and provide a link to your memory or the model #

**wingman99** · 07-03-2010, 02:27 AM

Re: EP45-UD3L having truble at 4.0 GHz

It was a MCH typo and I have the memory frequency posted above, I edited the rest.

**Lsdmeasap** · 07-03-2010, 02:47 AM

Re: EP45-UD3L having truble at 4.0 GHz

Ahh ok, thanks!

I needed to know what memory multiplier you are using, 1:1 is not a Gigabyte BIOS option, that would be 2.00B or 2.00D

**wingman99** · 07-03-2010, 03:10 AM

Re: EP45-UD3L having truble at 4.0 GHz

That would be 2.00D

**Lsdmeasap** · 07-03-2010, 03:16 AM

Re: EP45-UD3L having truble at 4.0 GHz

Thanks, try these settings

MB Intelligent Tweaker(M.I.T.)
Robust Graphics Booster ...............: Fast
CPU Clock Ratio ..........................: 8
Fine CPU Clock Ratio.....................:..5
CPU Frequency ...........................: 4004mhz

Clock Chip Control
Standard Clock Control
CPU Host Clock Control..................: [Enabled]
CPU Host Frequency (Mhz) ............: Mhz 471
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] Disabled
Syem Memory Multiplier ..............:2.00D
Msemory Frequency (Mhz) ..............: 942 MHz[/B]
DRAM Timing Selectable ................: [Manual]

Standard Timing Control
CAS Latency Time........................5
tRCD .........................................5
tRP'...........................................5
tRAS..........................................18
Advanced Timing Control
tRRD...........................................5
tWTR..........................................6
tWR............................................6
tRFC...........................................74
tRTP...........................................5
Command Rate (CMD) ....................:2

Driving Strength Profiles
Driving Strength ............................ 1066 (Set both channels)

Channel A
Static tRead Value.........................:9
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.........................:9
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….……….........................: 1.425
CPU Termination…..... 1.200V*.......: 1.4v << 1.32-1.36
CPU PLL…………………....1.500V*.......: 1.6v

CPU Referen.…………....0.800V*.......:

CPU Reference2………,,0.800V*.......:

MCH/ICH
MCH Core…………….....1.100V...........: 1.20-1.26
MCH Reference….…….0.800V...........; <<< Leave << This may help, but you have to set it properly. See my singature MCH GTL ref link on how to set, you might need .68-.74 or .78-.84, but you have to set it correctly so please see the link I mentioned
MCH/DRAM Ref.…......0.900V...........: <<< Leave
ICH I/O……………….....1.550V............: <<< Leave
ICH Core…………...……1.100V............: <<< Leave

DRAM
DRAM Voltage ……....1.800V............: 2.1v
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[/B]

**wingman99** · 07-04-2010, 02:37 AM

Re: EP45-UD3L having truble at 4.0 GHz

Thanks for trying to help. I tried all your setting and everything I could think of, however I think the CPU is holding me back with core failure in prime95 in 1-3 hours.

**Lsdmeasap** · 07-07-2010, 11:58 PM

Re: EP45-UD3L having truble at 4.0 GHz

Then you probably need more Vcore, give me your current full settings and I will advise back.

In the meantime, here is some info on how to tell what is causing Prime errors

http://forums.tweaktown.com/f69/another-q9950-ud3p-overclock-31304/index9.html#post296644

**wingman99** · 07-08-2010, 03:50 AM

Re: EP45-UD3L having truble at 4.0 GHz

This is what I tired, when I increase Vcore prime 95 faild faster in 10 minutes.

MB Intelligent Tweaker(M.I.T.)
Robust Graphics Booster ...............: Fast
CPU Clock Ratio ..........................: 8
Fine CPU Clock Ratio.....................:..5
CPU Frequency ...........................: 4004mhz

Clock Chip Control
Standard Clock Control
CPU Host Clock Control..................: [Enabled]
CPU Host Frequency (Mhz) ............: Mhz 471
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] Disabled
Syem Memory Multiplier ..............:2.00D
Msemory Frequency (Mhz) ..............: 942 MHz[/B][/B]

**Lsdmeasap** · 07-09-2010, 12:16 AM

Re: EP45-UD3L having truble at 4.0 GHz

Try raising PCIE to 101-103 for a quick test.

You may just need to adjust your MCH Ref is all, if you want to try it try using .68-.74 MCH Ref. To do that set Vtt to 1.20, then adjust MCH Ref, then raise Vtt back to 1.28-1.34 and see how things go, try this with .68-.74 MCH Ref and a few Vtt amounts for each one in between

**wingman99** · 07-30-2010, 01:36 AM

Re: EP45-UD3L having truble at 4.0 GHz

Well I tried those setting and I could not get it prime stable. I lowered the fSB to 448 with 8.5 multiplier and it was prime 95 stable blend. Then to check to see if it's my board causing the problem I set the multiplier to 8 and the FSB 471 at all the same settings and prime failed so I know it's the board that is the problem.

**Chike** · 07-30-2010, 04:30 AM

Re: EP45-UD3L having truble at 4.0 GHz

It's a bit naive to think that just changing the FSB with lower multiplier is enough, but without the settings and your setup components there's not much to be said.
You are OCing a quad on an "L" board, that might be a problem.

**wingman99** · 09-08-2010, 02:00 AM

Re: EP45-UD3L having truble at 4.0 GHz

Originally posted by Chike View Post

It's a bit naive to think that just changing the FSB with lower multiplier is enough, but without the settings and your setup components there's not much to be said.
You are OCing a quad on an "L" board, that might be a problem.

I changed the fsb higher with a lower multiplier 3.8 GHz and it failed, I tried lower fsb with the highest multiplier at 3.8 GHz and it passed 24 hour prime 95 stable. Its not the VRM on the "L" board, it's the p 45 chipset. If I had a X48 chipset things would be different.

Here are the setting I used that failed, i used the same settings that passed 3.8 Ghz just lowered the multiplier

MB Intelligent Tweaker(M.I.T.)
Robust Graphics Booster ...............: Fast
CPU Clock Ratio ..........................: 8
Fine CPU Clock Ratio.....................:..0
CPU Frequency ...........................: 3.768mhz

Clock Chip Control
Standard Clock Control
CPU Host Clock Control..................: [Enabled]
CPU Host Frequency (Mhz) ............: Mhz 471
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] Disabled
Syem Memory Multiplier ..............:2.00D
Msemory Frequency (Mhz) ..............: 942 MHz[/B]
DRAM Timing Selectable ................: [Manual]

Standard Timing Control
CAS Latency Time........................5
tRCD .........................................5
tRP'...........................................5
tRAS..........................................18
Advanced Timing Control
tRRD...........................................5
tWTR..........................................6
tWR............................................6
tRFC...........................................74
tRTP...........................................5
Command Rate (CMD) ....................:2

Driving Strength Profiles
Driving Strength ............................ 1066 (Set both channels)

Channel A
Static tRead Value.........................:9
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.........................:9
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….……….........................: 1.425
CPU Termination…..... 1.200V*.......: 1.4v << 1.32-1.36
CPU PLL…………………....1.500V*.......: 1.6v

CPU Referen.…………....0.800V*.......:

CPU Reference2………,,0.800V*.......:

MCH/ICH
MCH Core…………….....1.100V...........: 1.20-1.26
MCH Reference….…….0.800V...........; <<< Leave << This may help, but you have to set it properly. See my singature MCH GTL ref link on how to set, you might need .68-.74 or .78-.84, but you have to set it correctly so please see the link I mentioned
MCH/DRAM Ref.…......0.900V...........: <<< Leave
ICH I/O……………….....1.550V............: <<< Leave
ICH Core…………...……1.100V............: <<< Leave

DRAM
DRAM Voltage ……....1.800V............: 2.1v
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[/B]

**Chike** · 09-08-2010, 02:30 AM

Re: EP45-UD3L having truble at 4.0 GHz

Did you adjust MCH Reference as Lsdmeasap explained?
Try also adjusting CPU Reference the same way, but try higher first, the default is 0.76v @ 1.2v VTT.
And maybe 1.28-1.3v MCH Core.

**kick** · 09-08-2010, 03:40 PM

Re: EP45-UD3L having truble at 4.0 GHz

Its not the 45 chipset as such.x 48 doesnt allways clock that well.
Its getting the right settings for your components to work together above 450/1800fsb.
That and a memory bandwidth limit of around 10 Gb/s approx for us 775 intel mboard people at least.latency maybe 60ns or so but trying for bandwidth above 10gb/s on read isnt likely to work.

Any settings you apply that try and exceed that seem(in general) to fail.

Id link my own full bios settings, but in and around 500fsb for a quad there are so many variables like memory type/power supply loading/mch cooling/2 gx cards running thru mch or not etc that one persons settings may not work for u.
You can find em tho on older posts of mine.

Id check out the member "conners" and his quest for 500(2000) fsb thread on his 9550

There should be loads of links from that .

There is also another member looking for 4.2 on his 9550 on this page.
I dont have all the settings i tried between 450 and 500 fsb or even my 525 "validations" anymore
I do have my 490 and 500 profiles saved and a backup 450 one which is the last point I could use my memory at 4-4-4-12 timings with pl7.(on 2:00D multiplier)

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EP45-UD3L having truble at 4.0 GHz

EP45-UD3L having truble at 4.0 GHz

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