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Thread: Q9550 + GA-EP45-DS3R + Corsair 2x2GB 1066MHz Stability Issues




  1. #1
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    Question Q9550 + GA-EP45-DS3R + Corsair 2x2GB 1066MHz Stability Issues

    I have to thank everyone on this forum for all the hard work you guys put into it since for the first time I build this computer is at last stable on stock.

    Bought it last year in Nov or so. Except a few months while I was in Hospital, I tested all sort of settings but nothing was stable(not even stock, and all on AUTO). I'm using this computer for AutoCAD, Corel, Office, movies and every couple of weeks games.

    I can't complain about the hardware, all can give a great OC and would be nice to make it work too.

    The latest BIOS released F11e fix a lot of issues since when I got it not even stock was stable, couldn't even POST sometimes. Prime Orthos IntelBurn... It was working better OCed but sometimes I was getting blue screens and I was back to tinkering...

    Along the way I succeed to boot at 4.25GHz @ 500FSB and the RAM on other settings reached 1152HMz @ 480FSB but nothing was stable in tests.

    Q9550 - BX8056Q9550

    Corsair 2x2GB CL5 1066MHz XMS2 KIT - TWIN2x4096-8500C5 >>> OC test

    GA-EP45-DS3R Rev A3

    Gigabyte HD4850 1GB DDR3 - GV-R485MC-1GH

    The stability issues in my opinion are related to RAM settings since other ppl on same mobo got almost 580FSB.

    I don't want anything close to that just some recommended settings for FSB: 475; 500; 525; 533.

    In the last couple of days I tested a lot what I read on this forum, and at least STOCK is stable .

    MCH & CPU Reference should be - .63% x CPU termination (VTT)
    MCH/DRAM Reference should be 50% of DRAM Voltage (I set it 1.05V since my ram is rated 2.1V @ 1066MHZ but Easy Tune 6 show it as .89V, same for Channel A & B Termination.

    Advanced Timing Control:

    tRRD 3-5 ; tWTR 4-7 ; tWR 3-7 ; tRFC 52-58 ; tRTP 4-6

    Tried all for 475; 500; 525; 533 FSB same stability issues in tests or no post.

    Max CPU Frequency I tried was 4.3GHz @ 537MHz FSB and was like it wanted to boot (no beeps or anything) just restarted and loaded fail safe settings.

    For FSB: 475; 500; 525; 533 what would be the settings for Advanced Clock Control: CPU & PCIe CLock Drive; CPU & MCH clock Skew. Tried even 1000mV both and 0 the other 2.

    Every tool that I used didn't display in memory timings table settings for 333, just 266, 400 and 533. What is weird that most of the times I did boot on OC attempts was on a 333 latch 2.4B mostly even tho for FSB > 420 I've seen is recommended the 400 latch.

    In the OC test I linked for my RAM they say the voltage was set on 2.2V.. instead of 2.1V as Corsair advices for 1066MHz. Could that cause the instability? Voltage too low?

    Doest it matter if I don't select a Driving Strength Profile for my RAM? The problem is that most of the times when it was @ 1066MHz or 1050 even 1000 it wouldn't post unless it was 1200-OC ... and not 1066 or Auto.

    I would really appreciate settings for FSB 533 since I'm thinking to get 1:1 ration even tho the best ratio is the one you can make it to work... Did some testing and 1:1 wasn't that good but for 533MHz who knows... I tried 1:1 for 400MHz.

    I got a Nirvana NV120 for cooling and I think it does a great job since @ 4.25GHz 5min of Orthos CPU temp didn't pass 60ish C (140-150F). Also got a 120mm front fan on 7V mod since in 12V is like a vacuum cleaner 140-150CFM or something like that.

    As PSU I have a Rasurbo GAP 565 since I didn't plan back than to use 2 video cards and HD4850 is rated @ 110W. Used a lot of PSU calculators GAP 565 has a 550W output and my build uses around 450W.

    As you will see in the slideshow there is quite a Vdrop. BIOS has no Calibration Line option.

    Easy Tune 6 + CPU-Z + Hardware Monitor + MemSet
    Last edited by Dracones; 12-03-2009 at 07:12 AM. Reason: Wrong link on RAM kit

  2. #2
    kick's Avatar
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    Default Re: Q9550 + GA-EP45-DS3R + Corsair 2x2GB 1066MHz Stability Issues

    to cut it short 580 cpu host frequency or the 600 isnt for 775 quads on air.

    500 is about what u will get stable 480-490 is much easier to achieve.
    check posts by Conners,me,acebmxer,psycho 101 etc.
    I havent seen a quad running 533 host /2133 mhz fsb stable on air and Im not expecting to
    Last edited by kick; 12-03-2009 at 07:07 AM.
    Current Systems:

    Asrock p67 Extreme6.............. Gigabyte EP-45 UD3 ...................... Gigabyte 73 PVM S2
    Intel i5 2500k 4.8ghz................ Intel Q8400 3.8ghz......................... Intel D820 2.8ghz
    Zalman 10x cooler.................... Coolermaster V8............................ HP cooler
    8GB Gskill ripjaw ddr3.............. 4GB Gskill PI ddr2.......................... 4GB samsung ddr2
    60GB ssd/500GB HDD .............. WD 1TB hdd.................................... Seagate 160GB hdd
    GTX 460 1GB x2 SLI ................. Msi 9600GT 512MB(died) ........... Onboard gx
    Win7 64 ,750w psu(ocz)............ Win7 64 ,520w psu,seasonic...... Win XP pro ,400w psu

    HEC 6A34 case . ....................... Jeantec R2 case............................ Packard Bell case

    hoping to upgrade to http://www.thinkgeek.com/stuff/41/habicase.shtml
    http://www.flixya.com/video/140325/Animal-launching

  3. #3
    Chike is offline Senior Member
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    Default Re: Q9550 + GA-EP45-DS3R + Corsair 2x2GB 1066MHz Stability Issues

    Not sure about DRAM Reference. but for CPU and MCH Referenmce EasyTune shows the defaults for default VTT, might be the same with DRAM Voltage/Reference.

    A lot of P45 users are using the B strap for 400+ Mhz FSB, can't use it myself with the P43.

    MCH Core 1.2 may not be abough for 4GB high speed memory configuration, have you tried more 1.22-1.24 even more for OC?

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    Default Re: Q9550 + GA-EP45-DS3R + Corsair 2x2GB 1066MHz Stability Issues

    Just did some tests for FSB 490 480 and 471. Never tried VTT & MCH over 1.34V till now, I used search option for Q9550 settings and got one from someone using an UD3P.

    For 490/480 I get to Loading Windows screen and it freeze. For 471 tried the 333 2.4B strap for 1130MHz RAM but it failed on IBT.
    For FSB 471 and 400 2D strap = 942MHz IBT failed after 1 round. First round got 52ish Gflops did tried to take a snaphoot but seems it didn't save it, got a blue screen right after I hit PrtScr.

    Settings I used:

    Code:
    MB Intelligent Tweaker(M.I.T.)
    Robust Graphics Booster .............: Fast
    CPU Clock Ratio .....................: 8
    Fine CPU Clock Ratio.................:.5
    CPU Frequency .......................: 4 GHz
    
    
    Clock Chip Control 
    Standard Clock Control
    CPU Host Clock Control...............: [Enabled] 
    CPU Host Frequency (Mhz) ............: 471Mhz
    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)..................: <<< 0
    MCH Clock Skew (ps)..................: <<< 0
    
    
    DRAM Performance Control
    Performance Enhance.................: [STANDARD]
    Extreme Memory Profile (X.M.P.).....: Disabled
    (G)MCH Frequency Latch..............: 400
    System Memory Multiplier ...........: 2.00 D
    Memory Frequency (Mhz) .............: 942
    DRAM Timing Selectable .............: [Manual]
    
    Standard Timing Control
    CAS Latency Time....................: 5
    tRCD ...............................: 5
    tRP'................................: 5 
    tRAS................................: 15
    
    Set all Suggested below to highest Values first.  Then later you can lower, one at a time, testing as you go
    
    Advanced Timing Control
    tRRD................................: 4
    tWTR................................: 4 
    tWR.................................: 8
    tRFC................................: 68
    tRTP................................: 4
    Command Rate (CMD) .................: 2
    
    Driving Strength Profiles
    Driving Strength ...................: [Auto]
    
    Channel A
    Static tRead Value..................: 9 
    tRD Phase0 Adjustment...............:Auto <<< 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...............:Auto <<< 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…..........................: 1.39
    
    CPU Termination…..... 1.200V*.......: 1.36
    
    CPU PLL...............1.500V*.......: 1.59
    
    CPU Referen...........0.755V*.......: .901 
    
    MCH/ICH
    MCH Core..............1.100V........: 1.38
    MCH Reference.........0.800V........: .901
    MCH/DRAM Ref..........0.900V........: 1.06
    ICH I/O...............1.500V........: 1.5
    
    DRAM
    DRAM Voltage..........1.800V........: 2.12
    DRAM Termination .....0.900V........: 1.03
    Channel A Reference ..0.900V........: [Auto]
    Channel B Reference ..0.900V........: [Auto]
    
    Advanced Settings
    Limit CPUID Max. to 3...............: [Disabled]
    No-Execute Memory Protect...........: [Enabled]
    CPU Enhanced Halt (C1E).............: [Disabled]
    C2/C2E State Support................: NOT a BIOS feature on EP45-DS3R
    x C4/C4E State Support..............: NOT a BIOS feature on EP45-DS3R
    CPU Thermal Monitor 2(TM2) .........: [Enabled]
    CPU EIST Function...................: [Disabled]
    Virtualization Technology...........: [Enabled]
    
    Integrated Peripherals
    Legacy USB Storage Detect ..........: [Disabled] *Note* Must be enabled to flash from USB
    After I got BSOD on IBT when I look on Static tREAD Value, tRD Phase0-4 Adjusment had grayed out value 0 0 0 0 on Channel A and 1 0 1 1 on Channel B... ???

    Snapshot pre IBT this is before a previous IBT spin, didn't make it 1 round so I upéd 1 notch CPU/MCH ref from 0.8ish to .901 and it worked 1 round, 52ish GFlops.

    Since the CPU is rev. C1 should I go for FSB 450, 3.82GHz? 4GHz on 1.39V sounds like too much for my taste, yeah vdrop takes it to ~1.33V but sounds a bit too much for 24/7.
    Last edited by Dracones; 12-03-2009 at 09:09 AM. Reason: lock code

  5. #5
    Chike is offline Senior Member
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    Default Re: Q9550 + GA-EP45-DS3R + Corsair 2x2GB 1066MHz Stability Issues

    Quote Originally Posted by Dracones View Post
    Just did some tests for FSB 490 480 and 471. Never tried VTT & MCH over 1.34V till now, I used search option for Q9550 settings and got one from someone using an UD3P.
    Don't think you need neither of them that high.
    GFlops look right, nut you may have the same results with lower VTT/MCH Core and tuning MCH/CPU Refences.

  6. #6
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    Default Re: Q9550 + GA-EP45-DS3R + Corsair 2x2GB 1066MHz Stability Issues

    Quote Originally Posted by Chike View Post
    Don't think you need neither of them that high.
    GFlops look right, nut you may have the same results with lower VTT/MCH Core and tuning MCH/CPU Refences.
    Just tried that (1-2 notch down).. no luck, I get BSOD, or continuous beep.

    On the other hand tried to lower RAM settings for stock and IBT error on me, least didn't freeze/reboot etc.

    Compare this settings to the ones from 1st post slideshow...

    If DRAM Termination/MCH-DRAM ref should be 50% of DRAM voltage why ET6 show .89 even if I set 1.06? as you can see for stock snapshoot too.

    Also if you guys could give some limits that I should stick too for rev C1 Q9550 and other stuff I said in the previous 2 posts like safe/max

    vcore related to vdrop, PLL, CLock Drive, Advance timing controls.... Really tried to use any info related to EP45-DS3R and Q9550 just seems that for me it doesn't work even tho for others worked. Like the template I posted earlier, got it from a guy using Q9550 on UD3P and I had to up vcore, and ref's 1 notch to boot and pass 1 round in IBT. I get he has UD3P and is Durable3 compared to Durable2 also the fact that 2 CPU's and 2 mobo's from same lot will OC dif... just that I kinda got tired of trial and error.... and nothing working... except stock and that seems lucky too since dropping a few timings for RAM error on me.

    In the last couple of hours learned a lot about the OC capabilities of this build, too bad for the wasted time till I started to post here even tho I started to read this forum like 2 weeks ago. No wonder nothing was stable since on stock when I dropped RAM timings like tRFC from 68 to 52 or tRD from 7 to 6 it error. Every time I tried to OC I was using the max timings posted at start. Least I proved myself the RAM is holding me back. Any hint on what timings I should try for my messed up RAM? Considering everything I posted till now.
    Last edited by Dracones; 12-03-2009 at 10:49 AM. Reason: more stuff

  7. #7
    Lsdmeasap's Avatar
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    Default Re: Q9550 + GA-EP45-DS3R + Corsair 2x2GB 1066MHz Stability Issues

    Continous beeps means to low of a tRD for the set strap/multiplier

    Actual voltages vary, easytune does not, it shows what you set in the BIOS. Do you have MCH_Dram Ref in auto or not?

    If you would like to know how to set Ref voltages vs what you see in eaytune, please see the link in my signature.

    If you need help with your ram timings, please give me your ful settings and specs in a template, link also in my signature.

  8. #8
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    Default Re: Q9550 + GA-EP45-DS3R + Corsair 2x2GB 1066MHz Stability Issues

    I already posted the template with settings that got 1 round of IBT @ 52GFlops and I read lots of your posts on this forum. To set the ref I did as you explained, for VTT as example 1.2V after that ref to 0.76V after that back to VTT and changed to whatever I was using mostly 1.28-1.32. Just started to up MCH/DRAM at 50% of DRAM Voltage like you explained for VTT and ref just to be sure I'll flash the BIOS and start all over again, maybe it retains some hidden values.

    In the last couple of days I tested a lot what I read on this forum, and at least STOCK is stable .

    MCH & CPU Reference should be - .63% x CPU termination (VTT)
    MCH/DRAM Reference should be 50% of DRAM Voltage (I set it 1.05V since my ram is rated 2.1V @ 1066MHZ but Easy Tune 6 show it as .89V, same for Channel A & B Termination.

    Advanced Timing Control:

    tRRD 3-5 ; tWTR 4-7 ; tWR 3-7 ; tRFC 52-58 ; tRTP 4-6

    Tried all for 475; 500; 525; 533 FSB same stability issues in tests or no post.
    For the settings I used in #1 and #4 posts guess my ram can't run as tight as I was reading it can. I read the thread on Memory Timings explained also got the one from Anandtech found the link to that article on this forum.

    I would be happy to make it stable for FSB: 471 and other settings I used in the template from post #4 also as I mentioned in post #6 tried to lower 1-2 notch VTT/MCH Core and tuning MCH/CPU Refences but no luck yet, 1.39V seems like a bit high for 24/7 as I mentioned this and other concerns in post #4.
    Last edited by Dracones; 12-03-2009 at 05:24 PM. Reason: link fix

  9. #9
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    Default Re: Q9550 + GA-EP45-DS3R + Corsair 2x2GB 1066MHz Stability Issues

    Sounds like you did it correctly, I was just advising in case you did not since you had mentioned a lot of ref changes I was just trying to ensure you were going about changing things the right way. No need to start over.

    You mention to many changes for me to advise, with a few sets of timings. Continue your tweaking, and if you get stuck and need help please post for me your current exact settings and tell me the issue or problem and what you want to try and get going and I will advise back.

  10. #10
    kick's Avatar
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    Default Re: Q9550 + GA-EP45-DS3R + Corsair 2x2GB 1066MHz Stability Issues

    After u load and save the optimised defaults you could set
    The MCH and CPU ref to the numerical values shown and leave them,they will increase automatically as you raise the main voltages,at least on UD3 boards.
    The MCH and DRAM reference are supposed to be UP TO 50% of DRAM voltage.

    You mention things are stable at stock speeds (333mhz cpu host) but you dont mention where things start to become unstable .?

    from the settings you posted the cpu core V and the mch V seem a little high for that speed but you are getting a vdroop of .06v on the core is that correct?
    Is there a load line calibration(llc) option on that board?.

    You may want to try static read 10 with the 2:00 D multiplier see if it works, leave the other mem timings on auto.

    memory voltage..this is just an example 5-5-5-15
    For me at 500 cpu host (2000fsb) I need 2.2v in bios,which gives an actual reading of 2.18v (everest,speedfan).
    For 490 I need 2.08v-2.1v in bios ,actual reading 2.05v-2.06v

    For 450 at 4-4-4-12 timings I need 2.16v in bios
    For 400 at 4-4-4-12 timings I need 1.82v in bios
    Last edited by kick; 12-03-2009 at 06:03 PM.
    Current Systems:

    Asrock p67 Extreme6.............. Gigabyte EP-45 UD3 ...................... Gigabyte 73 PVM S2
    Intel i5 2500k 4.8ghz................ Intel Q8400 3.8ghz......................... Intel D820 2.8ghz
    Zalman 10x cooler.................... Coolermaster V8............................ HP cooler
    8GB Gskill ripjaw ddr3.............. 4GB Gskill PI ddr2.......................... 4GB samsung ddr2
    60GB ssd/500GB HDD .............. WD 1TB hdd.................................... Seagate 160GB hdd
    GTX 460 1GB x2 SLI ................. Msi 9600GT 512MB(died) ........... Onboard gx
    Win7 64 ,750w psu(ocz)............ Win7 64 ,520w psu,seasonic...... Win XP pro ,400w psu

    HEC 6A34 case . ....................... Jeantec R2 case............................ Packard Bell case

    hoping to upgrade to http://www.thinkgeek.com/stuff/41/habicase.shtml
    http://www.flixya.com/video/140325/Animal-launching

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