X48T-DQ6 and a Q9550 overclocking help needed.

[saintjulie]

Hello,
I'm trying to Oc my Q9550 and would like to reach 3.6-3.9 for a 24/7 oc.
My Hardware:
Q9550,
4dimms of OCZ 1333 platinium ram,
X48T-DQ6,
Scythe mugen,
4870x2,
Stacker 832 with 7 casefans,
A samsung 1TB hd,
a seagate 0.5tb hd,
a 160GB raptor
and a casefan(60mm) taped between the top of my gpu's pcb and the top of the mugen so it blows on the northbridge.

My problem:
I got the pc to run 3.4ghz on 1.28vcore, +.3v DDR3 +.2v NB and I took most of the other settings from the sticky guide(a very good guide imho)
My DDR3 ratio is 8:5 and timings are loose 8-7-7-24.
When I tried to up my speed to 425/412/420 FSB Prime constantly gives me errors after only a few seconds. Nomatter what settings I use.
These are the things i experimented with:
NBvoltage till+.3, FSBvoltage +.2
Pci-e voltage +.1, a lower ram devider, taking 2 dimms out, Vcore till 1.4 (boots windows starting at 1.31), LLC on and off and auto.

I also have pictures of my last bios setting I tried this with.
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Plaatjesupload.nl :: Gratis Plaatjes en Foto's Uploaden - Upload Plaatjes
Plaatjesupload.nl :: Gratis Plaatjes en Foto's Uploaden - Upload Plaatjes
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(it's a dutch site)

And somehow the setting that were 8hrs stable with prime 95 on 3.4ghz are now just as unstable as the rest. Although I have no problem internetting, or running a game.

And last but not least, i'm using the F5 bios.

Could someone give me a few pointers, problem solving ideas? I would really appreciate it.

Edit: I just now read that FSB overvoltage is actually VTT termination and the stock voltage is 1.1v hence I figure I can add up to .25-.3 . Could someone either confirm this or tell me it is wrong. It seems like something I don't want to find out the hard way :-)

[Lsdmeasap]

Re: X48T-DQ6 and a Q9550 overclocking help needed.

Yes you are right about vtt, keep it under 1.4 for sure. You should only need 1.2-1.3 for under 500FSB.

NONE of those linked images work for me, looks like the site is having Mysql errors...... So can you please post for me what you are trying 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

Robust Graphics Booster___________ [Auto]
CPU Clock Ratio ____________ [8] 
Fine Clock Ratio ____________[0.5]
CPU Host Clock Control_ [Enabled]
CPU Host Frequency (MHz)__________ [450] 
PCI Express Frequency (Mhz)_______ [100]
C.I.A. 2__________________________ [Disabled]
System Memory Multiplier (SPD)____ [2.00]
DRAM Timing Selectable_______ SPD __ [Manual]

Performance Enhance = [Standard]

CAS Latency Time________________ ?
Dram RAS# to CAS# Delay_________ ?
Dram RAS# Precharge Delay_______?
Precharge Delay (tRAS)__________ ?

ACT to ACT Delay (tRRD)_________ ?
Rank Write to READ Delay________ ?
Write to Precharge Delay_________ ?
Refresh to ACT Delay______________ ?
Read to Precharge Delay__________ ?
Static tRead Value_______________
Static tRead Phase Adjust________ [Auto]

CPU/PCIEX Clock Driving Control [800mV]
CPU Clock Skew Control [normal]
GMCH Clock Skew Control [Normal]

System Voltage Control____ [Manual]
DDR2 OverVoltage Control__ [+0.300V] 
PCI-E OverVoltage Control_ [+0.1V] 
FSB OverVoltage Control___ [+0.1V] 
(G)MCH OverVoltage Control [+0.1V] 
CPU Voltage Control_______ [1.25]

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

[saintjulie]

Re: X48T-DQ6 and a Q9550 overclocking help needed.

Hello, apologies for the non working links, guess it expired or something. I'll use yer template.


Robust Graphics Booster___________ [Auto-fast]
CPU Clock Ratio ____________ [8]
Fine Clock Ratio ____________[0.5]
CPU Host Clock Control_ [Enabled]
CPU Host Frequency (MHz)__________ [412-425]
PCI Express Frequency (Mhz)_______ [100-102]
C.I.A. 2__________________________ [Disabled]
System Memory Multiplier (SPD)____ [5:8 and the one below that to keep my memory under 1333 or close to it]
DRAM Timing Selectable_______ SPD __ [Manual]

Performance Enhance = [Standard]

CAS Latency Time________________ 6-9
Dram RAS# to CAS# Delay_________ 6-8
Dram RAS# Precharge Delay_______ 6-8
Precharge Delay (tRAS)__________ tried 18-24 (tried 2 ratios 8:5 and the one below that)

ACT to ACT Delay (tRRD)_________ 4-8
Rank Write to READ Delay________ 4-8
Write to Precharge Delay_________ 10-18
Refresh to ACT Delay______________ 58-72
Read to Precharge Delay__________ 5-12
Static tRead Value_______________ 6-10
Static tRead Phase Adjust________ [Auto]
Command rate _________ [1 and 2T]
CPU/PCIEX Clock Driving Control [800mV]
CPU Clock Skew Control [normal-50-150-100]
GMCH Clock Skew Control [Normal-50-150-100]

System Voltage Control____ [Manual]
DDR2 OverVoltage Control__ [+0.300V]
PCI-E OverVoltage Control_ [+0.1V-1.25]
FSB OverVoltage Control___ [+0.1V-.2]
(G)MCH OverVoltage Control [+0.1V-.25]
CPU Voltage Control_______ [1.28-1.4] with LLC on and off

Limit CPUID Max. to 3.....................: [Disabled]
No-Execute Memory Protect............: [Enabled]
CPU Enhanced Halt (C1E)................: [Disabled]
C2/C2E State Support....................: [Disabled]don't think I have seen this is the bios, if I have I left it on default
x C4/C4E State Support..................: [Disabled] same as above
CPU Thermal Monitor 2(TM2) ...........: [Enabled]
CPU EIST Function.........................: [Disabled]
Virtualization Technology................: [Disabled] Disabled

Integrated Peripherals
Legacy USB Storage Detect___________________[Disabled] don't remember this so I prolly left it alone</pre>As you see, I've been quite busy testing all kinds of configs, the weirdest thing for me is that when i put my fsb at 425, my pc boots to windows and works quite without trouble at any Vcore starting 1.32 but I almost immediatly get prime errors on small numbers FFT even when I take 2 dimms out. There are also some secret configs when F1-ctrl is pressed involving percentages, have read on the interwobbernetz that quads like -3% and -3% best, haven't tried that yet.
Very intrested in what your take is on this, this has been my day job for 5 days now :-) and getting a bit fatigued by it
thank you for your help for starters

[Lsdmeasap]

Re: X48T-DQ6 and a Q9550 overclocking help needed.

Maybe this will help. You may have to use a lower CPU multi to get where you want, so that you can use the 400/1600 MCH strap instead of the 333 strap, it may be too tight to run that speed on your ram

Robust Graphics Booster___________ [Auto-fast]
CPU Clock Ratio ____________ [8]
Fine Clock Ratio ____________[0.5]
CPU Host Clock Control_ [Enabled]
CPU Host Frequency (MHz)__________ [425]
PCI Express Frequency (Mhz)_______ [100-102]
C.I.A. 2__________________________ [Disabled]
System Memory Multiplier (SPD)____ [3.20B] =1360MHz
DRAM Timing Selectable_______ SPD __ [Manual]

Performance Enhance = [Standard]

CAS Latency Time________________ 6-9
Dram RAS# to CAS# Delay_________ 6-8
Dram RAS# Precharge Delay_______ 6-8
Precharge Delay (tRAS)__________ tried 18-24 (tried 2 ratios 8:5 and the one below that)

^^ What is your ram supposed to be at 1333? It may be 777-20 or 999-24, let me know so I may better advise you. A link to it would be great

ACT to ACT Delay (tRRD)_________ 4-8
Rank Write to READ Delay________ 4-8
Write to Precharge Delay_________ 10-18
Refresh to ACT Delay______________ 65-80
Read to Precharge Delay__________ 4-7
Static tRead Value_______________ 8-12
Static tRead Phase Adjust________ [Auto]
Command rate _________ [2T]

CPU/PCIEX Clock Driving Control [800mV]
CPU Clock Skew Control [normal-50-150-100] I would say nothing for this overclock
GMCH Clock Skew Control [Normal-50-150-100] Maybe 100-150

System Voltage Control____ [Manual]
DDR2 OverVoltage Control__ [+0.300V] What is your ram spec voltage? If it is 1.9 you will need to bump this one more until you get things sorted

PCI-E OverVoltage Control_ [+0.1V-1.25]
FSB OverVoltage Control___ [+0.1V-.2]
(G)MCH OverVoltage Control [+0.1V-.25] << May need 1.25-1.35 for 4 sticks at that speed

CPU Voltage Control_______ [1.28-1.4] with LLC on and off (How much drop do you have from what you set in the BIOS to what you get in windows at idle?)

[saintjulie]

Re: X48T-DQ6 and a Q9550 overclocking help needed.

I'll try what you suggest right away,
These are my rams sticks
OCZ Technology | Products | Memory | OCZ DDR3 PC3-10666 Platinum Edition

7-7-7-20, reviews say it goes crazy at 2.05V, and it's EVP certified till 1.95.
Have not tried voltages over 1.95.

[Lsdmeasap]

Re: X48T-DQ6 and a Q9550 overclocking help needed.

K, Well just so you know +0.3 on the ram voltage is only 1.8V. But check your PC Health section to see exactly how much it is getting as sometimes it varies depending on the board and setting used

[saintjulie]

Re: X48T-DQ6 and a Q9550 overclocking help needed.

aye, the difference is about +0.03 so +.30=1.83 so i'll add another +.1 and see what happens.

[saintjulie]

Re: X48T-DQ6 and a Q9550 overclocking help needed.

Vcore @ 1.3625 LLC--> small falls to 1.34
noLLC--> 1.328


Robust Graphics Booster___________ [Auto]
CPU Clock Ratio ____________ [8]
Fine Clock Ratio ____________[0.5]
CPU Host Clock Control_ [Enabled]
CPU Host Frequency (MHz)__________ [425]
PCI Express Frequency (Mhz)_______ [102]
C.I.A. 2__________________________ [Disabled]
System Memory Multiplier (SPD)____ [3.40--> mem @1360]
DRAM Timing Selectable_______ SPD __ [Manual]

Performance Enhance = [Standard]

CAS Latency Time________________ 9
Dram RAS# to CAS# Delay_________ 8
Dram RAS# Precharge Delay_______8
Precharge Delay (tRAS)__________ 24

ACT to ACT Delay (tRRD)_________ 8
Rank Write to READ Delay________ 8
Write to Precharge Delay_________ 18
Refresh to ACT Delay______________ 80
Read to Precharge Delay__________ 7
Static tRead Value_______________12
Static tRead Phase Adjust________ [Auto]

CPU/PCIEX Clock Driving Control [800mV]
CPU Clock Skew Control [normal]
GMCH Clock Skew Control [150ps]

System Voltage Control____ [Manual]
DDR2 OverVoltage Control__ [+0.400V]
PCI-E OverVoltage Control_ [+0.15V]
FSB OverVoltage Control___ [+0.2V]
(G)MCH OverVoltage Control [+0.3V]
CPU Voltage Control_______ [1.3625]

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___________________[enabled]</pre>
Immediate prime errors on these settings.

[Lsdmeasap]

Re: X48T-DQ6 and a Q9550 overclocking help needed.

Try less MCH and then if no joy, less Vcore/FSB. And trrd does not need to be 8, 6 would be fine at least stable enough for sure for testing

There is no 3.40 Memory Multiplier so hopefully that was a error, are you choosing a strap letter/symbol with it? If so try one without or one from a higher strap

[saintjulie]

Re: X48T-DQ6 and a Q9550 overclocking help needed.

aye, was talking about the 8:5 one, for osme reason i seem to remember the ratio's better in this format :-) and will try the suggestions.

[saintjulie]

Re: X48T-DQ6 and a Q9550 overclocking help needed.

I use the 3.20B strap for 333 cpu's.
Just spend some time trying out settings in the range you suggested. i'll give a quick overview.

<table style="border-collapse: collapse; width: 723pt;" width="963" border="0" cellpadding="0" cellspacing="0"><col style="width: 48pt;" width="64"> <col style="width: 69pt;" width="92"> <col style="width: 59pt;" width="78"> <col style="width: 58pt;" span="2" width="77"> <col style="width: 59pt;" width="79"> <col style="width: 59pt;" width="78"> <col style="width: 56pt;" width="75"> <col style="width: 53pt;" width="71"> <col style="width: 60pt;" width="80"> <col style="width: 48pt;" span="3" width="64"> <tbody><tr style="height: 15pt;" height="20"> <td class="xl65" style="height: 15pt; width: 48pt;" width="64" height="20">425</td> <td style="width: 69pt;" width="92">800mv</td> <td style="width: 59pt;" width="78">
</td> <td style="width: 58pt;" width="77">
</td> <td style="width: 58pt;" width="77">
</td> <td style="width: 59pt;" width="79">
</td> <td style="width: 59pt;" width="78">
</td> <td style="width: 56pt;" width="75">
</td> <td style="width: 53pt;" width="71">
</td> <td style="width: 60pt;" width="80">
</td> <td style="width: 48pt;" width="64">
</td> <td style="width: 48pt;" width="64">
</td> <td style="width: 48pt;" width="64">
</td> </tr> <tr style="height: 15pt;" height="20"> <td class="xl65" style="height: 15pt;" height="20">3,20B</td> <td>normal</td> <td>
</td> <td>
</td> <td>
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</td> <td>
</td> <td>
</td> <td>
</td> <td>
</td> <td>
</td> <td>
</td> <td>
</td> </tr> <tr style="height: 15pt;" height="20"> <td class="xl65" style="height: 15pt;" height="20">
</td> <td>100ps</td> <td>
</td> <td>
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</td> <td>
</td> <td>
</td> <td>
</td> <td>
</td> <td>
</td> <td>
</td> <td>
</td> </tr> <tr style="height: 15pt;" height="20"> <td class="xl65" style="height: 15pt;" height="20">9</td> <td>
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</td> <td>
</td> </tr> <tr style="height: 15pt;" height="20"> <td class="xl65" style="height: 15pt;" height="20">8</td> <td>DDR3 V</td> <td align="right">0,4</td> <td align="right">0,4</td> <td align="right">0,4</td> <td align="right">0,4</td> <td align="right">0,4</td> <td align="right">0,4</td> <td align="right">0,4</td> <td align="right">0,4</td> <td align="right">0,4</td> <td align="right">0,4</td> <td align="right">0,4</td> </tr> <tr style="height: 15pt;" height="20"> <td class="xl65" style="height: 15pt;" height="20">8</td> <td>PCIe</td> <td align="right">0,1</td> <td align="right">0,1</td> <td align="right">0,1</td> <td align="right">0,1</td> <td align="right">0,1</td> <td align="right">0,1</td> <td align="right">0,1</td> <td align="right">0,1</td> <td align="right">0,1</td> <td align="right">0,1</td> <td align="right">0,1</td> </tr> <tr style="height: 15pt;" height="20"> <td class="xl65" style="height: 15pt;" height="20">24</td> <td>FSB</td> <td align="right">0,05</td> <td align="right">0,15</td> <td align="right">0,1</td> <td align="right">0,1</td> <td align="right">0,05</td> <td align="right">0</td> <td align="right">0</td> <td align="right">0,25</td> <td align="right">0,25</td> <td align="right">0,25</td> <td align="right">0,25</td> </tr> <tr style="height: 15pt;" height="20"> <td class="xl65" style="height: 15pt;" height="20">
</td> <td>MCH</td> <td align="right">0,1</td> <td align="right">0,15</td> <td align="right">0,2</td> <td align="right">0,1</td> <td align="right">0,125</td> <td align="right">0,125</td> <td align="right">0,125</td> <td align="right">0,3</td> <td align="right">0,25</td> <td align="right">0,15</td> <td align="right">0,125</td> </tr> <tr style="height: 15pt;" height="20"> <td class="xl65" style="height: 15pt;" height="20">6</td> <td>Vcore</td> <td align="right">1,34</td> <td align="right">1,31</td> <td align="right">1,2875</td> <td align="right">1,2875</td> <td align="right">1,30625</td> <td align="right">1,31875</td> <td align="right">1,35</td> <td align="right">1,31875</td> <td align="right">1,35</td> <td align="right">1,35</td> <td align="right">1,3375</td> </tr> <tr style="height: 15pt;" height="20"> <td class="xl65" style="height: 15pt;" height="20">8</td> <td>LLC= on</td> <td>
</td> <td>
</td> <td>
</td> <td> No win</td> <td>No win</td> <td>
</td> <td>
</td> <td>No win</td> <td>
</td> <td>
</td> <td>
</td> </tr> <tr style="height: 15pt;" height="20"> <td class="xl65" style="height: 15pt;" height="20">18</td> <td>
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</td> </tr> <tr style="height: 15pt;" height="20"> <td class="xl65" style="height: 15pt;" height="20">80</td> <td>
</td> <td>
</td> <td colspan="5" style="">No win = freeze/reboot right after the Os selection screen</td> <td>
</td> <td>
</td> <td>
</td> <td>
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</td> </tr> <tr style="height: 15pt;" height="20"> <td class="xl65" style="height: 15pt;" height="20">7</td> <td>
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</td> </tr> <tr style="height: 15pt;" height="20"> <td class="xl65" style="height: 15pt;" height="20">12</td> <td>
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</td> </tr> <tr style="height: 15pt;" height="20"> <td class="xl65" style="height: 15pt;" height="20">auto</td> <td>
</td> <td>
</td> <td>
</td> <td>
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</td> <td>
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</td> <td>
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</td> </tr> <tr style="height: 15pt;" height="20"> <td class="xl65" style="height: 15pt;" height="20">2T</td> <td>
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</td> <td>
</td> </tr> </tbody></table>
This is what i got around to trying, none of them didn't give errors in prime 95 after a few seconds. I'm starting to think i might just have a less oc'able cpu. Going to bed now.
I hope you have some more pointers.

[Lsdmeasap]

Re: X48T-DQ6 and a Q9550 overclocking help needed.

Well, that is not clear to me at all. I know it took you some time likely, but the way this site changes text formatting is terrible.

You should be trying the D strap for that high of ram speed, it will be much more stable

You need to be sure your ram is stable with Memtest before you even try Prime, if it is not then you dont know if you need more voltage or ram settings adjusted. Make sure your ram is stable, and then you will kow better what you need to adjust when prime fails

If it fails FAST that is normally Voltage issue, like Reference or Vtt voltage incorrect or not enough Vcore/MCH

[saintjulie]

Re: X48T-DQ6 and a Q9550 overclocking help needed.

The first column lists FSB,ratio, and all the timings of the ram which remained constant.
The second column's first 2 rows list the cpu skew bios settings, they also remained constant.
The next rows are markers for the other columns, I tried 10 different settings, and they were variable for MCH,FSB, DDR3 and Vcore.
Loadline calibration was on all the time.

The 4th, the 5th and the 8th list of settings did not boot into windows.
I hope that makes the excel paste a bit more understandable.

Will try some memtest this afternoon/eve.

[saintjulie]

Re: X48T-DQ6 and a Q9550 overclocking help needed.

Did some memtesting today, The timings in the data sheet(but with the D strap) seem errorless, as do the ones when I put everyting on auto at 425FSB.
So I guess it is a voltage issue.
Since I tried maxing out voltages MCH +.3, FSB+.3 and Vcore 1.4v, am rather clueless at what else I could try.
Maybe try the F6 bios?

[Lsdmeasap]

Re: X48T-DQ6 and a Q9550 overclocking help needed.

Errorless? Well what do you mean then. You should use the D strap (And disable LLC for sure)

I still am lost looking at that table. But I can say at 425 FSB and that ram speed you will need to likely use the 400 MCH latch for sure to keep stable. It is not a big deal, and you can tighten timings for sure once you get settled in

Memtest passes and orthos fails you have incorrect voltages somewhere.

Ya, latest BIOS could always help, but I think you just need to use the 400 strap