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Thread: Very strange behaviour after changing PC case and PSU




  1. #61
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    Default Re: Very strange behaviour after changing PC case and PSU

    Quote Originally Posted by Lsdmeasap View Post
    CPU voltage for 65 NM depends on your temps, and what you are using to cool your CPU. But the general MAX is said to be 1.5, some go way above that, I always stayed under 1.45 actual at load. Again though temps will be the deciding factor, you will get WAY to hot before you go out of a safe range anyway most likely so dont worry much there

    Like I said before you want to make your ram loose and find your CPU setting you want, then work on the ram last. That is the easiest way. And yeah you will want to keep the multi so it is around 800-900 on the ram, and use 555-18 timings. Either set the subtimings very high or on AUTO so you know it is not the ram when you get errors.
    Dunno but maybe I was a bit unclear when posting about the 65nm, what I meant was I am using a E8400 Intel Core Duo with the cpu stock cooler from a 65nm Intel Core Duo i.e E6xxx-series cpu.

    And also, yeah I know I went about the overcloking in the wrong order, I wouldnt have gone this far into the ram timings if I had known the PSU was the reason for some of the instability issues I had before.
    Mobo - Gigabyte GA-EX38-DS4
    CPU - Intel Core 2 Duo E8400 @3.6GHz
    RAM - Mushkin Redline XP2 PC8000
    GFX - Gigabyte Geforce 8800GT Type B
    PSU - Hiper Type R MKII 680W

  2. #62
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    Default Re: Very strange behaviour after changing PC case and PSU

    Orthos Blend test failed with a complete system lockup after ~45min with these values:

    Robust Graphics Booster___________ [Auto]
    CPU Clock Ratio ____________ [9]
    CPU Host Clock Control_ [Enabled]
    CPU Host Frequency (MHz)__________ [333]
    PCI Express Frequency (Mhz)_______ [100]
    C.I.A. 2__________________________ [Disabled]
    System Memory Multiplier (SPD)____ [2.40b]
    DRAM Timing Selectable_______ SPD __ [Manual]
    Performance Enhance = [Standard]

    CAS Latency Time________________ 4
    Dram RAS# to CAS# Delay_________ 4
    Dram RAS# Precharge Delay_______4
    Precharge Delay (tRAS)__________ 12
    ACT to ACT Delay (tRRD)_________ 4
    Rank Write to READ Delay________ 4
    Write to Precharge Delay_________ 8
    Refresh to ACT Delay______________ 42
    Read to Precharge Delay__________ 4
    Static tRead Value_______________ 8
    Static tRead Phase Adjust________ AUTO

    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_______ [NORMAL]
    Mobo - Gigabyte GA-EX38-DS4
    CPU - Intel Core 2 Duo E8400 @3.6GHz
    RAM - Mushkin Redline XP2 PC8000
    GFX - Gigabyte Geforce 8800GT Type B
    PSU - Hiper Type R MKII 680W

  3. #63
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    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: Very strange behaviour after changing PC case and PSU

    Ahh sorry I musta misread you.

    Ya, that cooler will be much better, just keep your eye on temps. I ran my E3110 (Same as E8400) @ 4.05GHz (With 1.325V Set in BIOS) on Air with a Zalman9700 and load temps was 65 or so. Have since went to water cooling and have much better temps 54 MAX a load even at 4.2. I am using 4.05 still 24/7 @ 1.325 as I have not had time to play with it much, but I can go to 4.2 with no failure so I can likely now lower my voltages

    Chips are all different though, so you may need more or less to do 4GHz, if you wanted, or more or less then what you see someone else's 8400 doing 3.6 at. Just keep that in mind, only you and your testing is going to show you what YOUR chip will do

    The safe for 45nm is being said everywhere as 1.45 MAX but I still see some going over that, most stay under 1.4. 1.35+ is where things would start getting way to hot for you anyway likely so you wont need to worry.

    Depending on your chip, and it's VID you may not even need more CPU voltage until after 3.6Ghz. You will just have to take steps 10-20GHz at a time and see where it starts failing and asking for you to start settings voltages. Which to start with you SHOULD NOW. AUTO may give it too much at anytime, and likely always more then you need. Set it for now to the Default of what you see there listed and then start working your way up. When it starts failing add a step or two in VCore and then move up some more until it fails again.

    With your rams on 555-15 when it fails you will know it is your CPU. I would test for this failure with Small or Large FFT, with large helping you know faster them small

  4. #64
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    Default Re: Very strange behaviour after changing PC case and PSU

    Likely that failure is caused by AUTO CPU voltages not being correct, set it manually to stock or a bump above with loadline enabled.

    And you may want to bump these for now >>>
    Rank Write to READ Delay________ 4 <<< Bump to 5
    Read to Precharge Delay__________ 4<<< Bump to 5

    But to make things easier on yourself, just set them all to 555-18 and AUTO make a profile for that and start finding where you want your CPU set to, then work on the ram

  5. #65
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    Default Re: Very strange behaviour after changing PC case and PSU

    Thanx I feel enough confident to start clocking the cpu now BUT with the fail I just had with Orthos Blend at 45min, what do u suggest I do with the memory subtimings?

    Should I just loosen all timings on the mems and go for the cpu clocking and then worry about mems?

    EDIT. Sry didnt see u posted again. gonna make the changes now and do another blend test.

    EDIT No.2
    Setting the Vcore to 1.225 manually really did the trick, that and a small adjustment on the subtimings you sugested :) Passed the Orthos Blend with flying colors, only tested 1 hour though but still.
    Last edited by LaZ; 06-29-2008 at 09:02 AM.
    Mobo - Gigabyte GA-EX38-DS4
    CPU - Intel Core 2 Duo E8400 @3.6GHz
    RAM - Mushkin Redline XP2 PC8000
    GFX - Gigabyte Geforce 8800GT Type B
    PSU - Hiper Type R MKII 680W

  6. #66
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    Default Re: Very strange behaviour after changing PC case and PSU

    Been reading alot about Speedfan and CoreTemp, they both show different temps for the cores, they differ in 5 degress. So as I said been reading about it but to be honest its more confusing than ever, so many variables I am getting dizzy. Anyway, whats ur input on the subject? What program shows the most realistic value, Coretemp or speedfan?

    In my case, cpu@3.15GHz Speedfan shows 53 degrees and Coretemp shows 58 degrees.
    Mobo - Gigabyte GA-EX38-DS4
    CPU - Intel Core 2 Duo E8400 @3.6GHz
    RAM - Mushkin Redline XP2 PC8000
    GFX - Gigabyte Geforce 8800GT Type B
    PSU - Hiper Type R MKII 680W

  7. #67
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    Default Re: Very strange behaviour after changing PC case and PSU

    I am @3.4GHz now. 5-5-5-18 @ 453.6MHz (906MHz) Subtimings on Auto.

    CoreTemp
    Idle 43 Load 59-60 degrees

    Speedfan
    Idle 38 Load 54-55 degrees

    Ive been increasing the FSB with small amounts, and running Orthos Small FFTs and some occasional Large FFTs for about an hour each between the FSB increasements. So far NO errors. I know running Orthos for only one hour doesnt mean its fully stable but still, I feel I have come a long way :)

    Aiming for 3.6GHz tomorrow, and maybe do some bechmarking to see wether having rams in sync 1:1 with FSB @4-4-4-12 will yield better performance than overclocking @5-5-5-15 and having a divider on them.
    Last edited by LaZ; 06-29-2008 at 09:16 AM.
    Mobo - Gigabyte GA-EX38-DS4
    CPU - Intel Core 2 Duo E8400 @3.6GHz
    RAM - Mushkin Redline XP2 PC8000
    GFX - Gigabyte Geforce 8800GT Type B
    PSU - Hiper Type R MKII 680W

  8. #68
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    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: Very strange behaviour after changing PC case and PSU

    REALTEMP for 45nm. Here is the download and Calibration page (Which you MUST DO) >>>
    Real Temp - CPU temperature monitoring
    Real Temp - Documentation & Calibration

    Realtemp is the best once calibrated for 45nm CPU's, until the other apps catch up in programming. I used to use everest, but havent started it in a while now. Plus RealTemp keeps a not of the time of max and min temps it is very nice!

    When doing your calibration you can use .8 or less for your vcore

    What Multi are you using for your CPU? 7.5? You should use 9 for sure if you only want 3.6 ( 9 X 400 ) , maybe 8.5 X 425 for 3.61 and 1:1 on your ram at 850, that is likely where 444-12 will start to fail but maybe not

  9. #69
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    Default Re: Very strange behaviour after changing PC case and PSU

    Thanx gonna try the realtemp then.

    I am using these values now:

    Robust Graphics Booster___________ [Auto]
    CPU Clock Ratio ____________ [9]
    CPU Host Clock Control_ [Enabled]
    CPU Host Frequency (MHz)__________ [378]
    PCI Express Frequency (Mhz)_______ [100]
    C.I.A. 2__________________________ [Disabled]
    System Memory Multiplier (SPD)____ [2.40b]
    DRAM Timing Selectable_______ SPD __ [Manual]
    Performance Enhance = [Standard]

    CAS Latency Time________________ 5
    Dram RAS# to CAS# Delay_________ 5
    Dram RAS# Precharge Delay_______5
    Precharge Delay (tRAS)__________ 18
    ACT to ACT Delay (tRRD)_________ AUTO
    Rank Write to READ Delay________ AUTO
    Write to Precharge Delay_________ AUTO
    Refresh to ACT Delay______________ 42
    Read to Precharge Delay__________ AUTO
    Static tRead Value_______________ AUTO
    Static tRead Phase Adjust________ AUTO

    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_______ [1.225] <!-- / message --> <!-- sig --> __________________
    Motherboard - Gigabyte GA-EX38-DS4
    CPU - Intel Core Duo E8400
    RAMS - Corsair PC6400 XMS2 Cas4 2048Mb
    VGA - Gigabyte Geforce 8800GT Type B
    PSU - Hiper Type R MKII 680W
    Mobo - Gigabyte GA-EX38-DS4
    CPU - Intel Core 2 Duo E8400 @3.6GHz
    RAM - Mushkin Redline XP2 PC8000
    GFX - Gigabyte Geforce 8800GT Type B
    PSU - Hiper Type R MKII 680W

  10. #70
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    Default Re: Very strange behaviour after changing PC case and PSU

    I read the calibration doc. But to doublecheck with you, I am supposed to set FSB 266 x 6 - lower Vcore to 0.8. Start Windows - Start Realtemp - Check my idle temp and if it is more or less than 5 degrees above/below ambient temp I make a correction in the settings page?

    Realtemp shows me an idle temp of 32 degrees now, with no calibration done.
    Last edited by LaZ; 06-29-2008 at 08:43 PM.
    Mobo - Gigabyte GA-EX38-DS4
    CPU - Intel Core 2 Duo E8400 @3.6GHz
    RAM - Mushkin Redline XP2 PC8000
    GFX - Gigabyte Geforce 8800GT Type B
    PSU - Hiper Type R MKII 680W

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