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Thread: Stable E8400 OC - stock voltages




  1. #51

    Default Re: Stable E8400 OC - stock voltages

    Quote Originally Posted by Outer Marker View Post
    I don't think the 2.40B strap will cause any difficulty at such a low FSB. Your memory is great at 1022. In the link it was rated at 1150, so running it a little slower will be no problem.
    That's what I thought. Would like to get the 4Ghz but OCCT test causes it to reboot after just a few minutes. Arghh...

    Update:

    By the way I'm still tinkering with the 4Ghz. I adjusted the RAM timings to the 5-6-6-18 and tried it with SMM at 2.0b and this time it did not reboot but after a couple minutes I got some sore of error that pointed toward Core #0 and Core #1.

    I'm going to bump the SMM back to 2.4b to see what happens. I wonder if at 4Ghz if I need to drop the MCH Core below 1.3 and maybe bump the CPU Vcore up from 1.625.

    I thought it was interesting you were using a higher CPU voltage at 3.83 than 4 but they are quite close.


    Update:

    Okay, moving SMM back to 2.4b threw the same error but it did not reboot. So moving from 5-5-5-18 to 5-6-6-18 appears to have helped. Now any recommendations? Thoughts on my notes above about the MCH/CPU voltages?

    Update: I'll just add notes for now. Hope that's cool. If someone responds then I'll post a reply.

    I was attempting 4G yet and thought I was okay with the mem settings and using SMM of 2.4b and dropped MCH to 1.28. However my PC just simply rebooted randomly and I got a BSOD that flashed by. I'm trying the 3.83 settings with mem at 5-6-6-18 stock settings and see if I can get stability for now.
    Last edited by SBMongoos; 03-28-2009 at 05:53 AM.

  2. #52
    Join Date
    Mar 2009
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    9

    Default Re: Stable E8400 OC - stock voltages

    Hey there Outer Marker! I've just traded out a real pos motherboard (evga 680i) for the Gigabyte EP45-UD3P and now share the same specs as you, so when I found this thread I felt compelled to try your "already tested" bios setting for a stable oc. I've built several computers over the years but never truly dove into the oc'g aspect of it until now. After using your bios settings I'm currently at 3.6 stable and at a relatively cool 60 C under full load using the IntelBurn Test Linpack (x5) and also 53 C using the OCCT test (1 hr).

    I wasn't previously a member of these forums but a need to know a bit more about this motherboard found me here. I just wanted to say thank you very much for a stable (and cool) oc that works just great! I plan on trying out your settings for a 3.83 oc later and then I'll run test on that as well for heat and stability.

    Antec 1200
    Gigabyte EP45-UD3P
    Core2Duo Wolfdale E8400 3ghz @ 3.6ghz
    Zalman 9500 cpu cooler
    GSkill 4 gb ddr2 ram 800mhz (used the 2.00D settings you suggested)
    eVGA 8800gtx superclocked 700/1000
    XFi Champion Series w/front panel control
    WD hdds x4 127gb - 500 gb (x2) - 600 gb
    Pioneer DVD rom




    ps.... Is the Zalman sufficient for oc'g, or should I consider a the Xigmatek I've been hearing so much about?

    pss.... Is it possible or achieve a stable/low heat oc of 4.0ghz using our specs, or is that not adviseable?


    again bud, thanks so very much for your initial post of this bios oc!
    Last edited by Neocane; 03-30-2009 at 03:24 AM.

  3. #53
    Join Date
    Jan 2009
    Location
    Virginia, USA
    Posts
    115

    Default Re: Stable E8400 OC - stock voltages

    Great work Neocane! Glad the settings are working well for you. Your temps are pretty identical to mine. Intel Burn Test really works your core, so the higher temperatures seen under that test are fine. Both OCCT and Intel Burn Test temps look good. If you recently built your rig, temps should come down a couple degrees after your thermal paste sets.

    The Zalman cooler should be fine for overclocking - I've never heard any bad things about it. A 4GHz overclock is very reasonable with our hardware, but I don't have any stable settings for you unfortunately. I'm not a hardcore gamer, but I do a lot of Photoshop work and I do play Flight Simulator on the PC. In my benchmarks, there was no real-world difference between 3.83 GHz and 4.0 GHz. In a benchmark with Everest Ultimate, I saw only minor gains, but quite a lot more heat (lot more Vcore was needed). In conclusion, I prefer the 3.83 config for its great stability and relatively low voltage requirements. Given that, I didn't spend any time making the 4.0 config stable, and I did get a few lock-ups and blue screens. Photoshop in particular was a b'stard with 4.0

    I would say that you could use the 3.83 config as a starting point if you want to go higher. If I ever go higher or find a new stable point, check my signature, I'll always post my settings here and link to them in my signature.
    Gigabyte EP45-UD3R (F7 BIOS)
    Intel Pentium E8400 E0
    Arctic Cooling Freezer 7 Pro
    G.Skill DDR2 1066 (2x2GB) 5-5-5-15 @ 2.0V~2.1V
    EVGA GeForce 9800 GT 512MB
    (3x) Seagate Barracuda 250GB SATA II Drives
    CORSAIR 650TX 650W PSU
    Cooler Master Centurion 5 Case
    XP Professional 32-bit SP3

    Stable E8400 OC - stock voltages
    Stable E8400 OC - 3.83

  4. #54
    Join Date
    Mar 2009
    Posts
    9

    Default Re: Stable E8400 OC - stock voltages

    Wow, thanks for the quick reply bud! I'm going to try your 3.83 oc and run some tests on it. I appreciate the time it must have taken to test these settings for yourself and save me all the time and research you yourself must have done. It has saved me a lot of said footwork!

  5. #55

    Default Re: Stable E8400 OC - stock voltages

    Quote Originally Posted by Neocane View Post
    Wow, thanks for the quick reply bud! I'm going to try your 3.83 oc and run some tests on it. I appreciate the time it must have taken to test these settings for yourself and save me all the time and research you yourself must have done. It has saved me a lot of said footwork!
    Yes, I ditto that remark! Thanks.

    I'm in the same position as Neocane.

  6. #56
    Join Date
    Jan 2009
    Location
    Virginia, USA
    Posts
    115

    Default Re: Stable E8400 OC - stock voltages

    I'm very happy to know I've helped more than just myself . In particular, this P45 chipset seems to be a bit harder to figure out than others. It seems that it is very consistent though... once good settings are found, they seem to work well across the board. That's an interesting observation, and one I hope continues to hold true for others.
    Gigabyte EP45-UD3R (F7 BIOS)
    Intel Pentium E8400 E0
    Arctic Cooling Freezer 7 Pro
    G.Skill DDR2 1066 (2x2GB) 5-5-5-15 @ 2.0V~2.1V
    EVGA GeForce 9800 GT 512MB
    (3x) Seagate Barracuda 250GB SATA II Drives
    CORSAIR 650TX 650W PSU
    Cooler Master Centurion 5 Case
    XP Professional 32-bit SP3

    Stable E8400 OC - stock voltages
    Stable E8400 OC - 3.83

  7. #57

    Default Re: Stable E8400 OC - stock voltages

    I'm currently using your 3.83 settings but have not tested with OCCT. Haven't had the best of luck yet and I'm not sure how to read the OCCT error logs.

  8. #58
    Join Date
    Jan 2009
    Location
    Virginia, USA
    Posts
    115

    Default Re: Stable E8400 OC - stock voltages

    Can you post how your settings look related to this? The two values in RED below should be tried independent of each other. First try the 1100 OC driving strength profile. If no joy, try upping the Northbridge voltage as indicated in red below. Make sure all other settings are as shown below. Note that I have modified DRAM voltage so that it fits your spec RAM.

    If all that still doesn't work, we'll get you going on the 2.0D strap instead!

    Code:
     
    Robust Graphics Booster ...............: [Auto]
    CPU Clock Ratio .......................: [   9]
    Fine CPU Clock Ratio...................:  +0.0
    CPU Frequency .........................: 3.83GHz
     
    Clock Chip Control 
    Standard Clock Control
    CPU Host Clock Control.................: [Enabled] 
    CPU Host Frequency (Mhz) ..............:  426Mhz
    PCI Express Frequency (Mhz) ...........:  100
     
    C.I.A.2 ...............................: [Disabled]
     
    Advanced Clock Control [Press Enter]
    CPU Clock Drive........................: 800mV
    PCI Express Clock Drive................: 900mV
    CPU Clock Skew (ps)....................:   0ps
    MCH Clock Skew (ps)....................:   0ps
     
    DRAM Performance Control
    Performance Enhance....................: [STANDARD]
    Extreme Memory Profile (X.M.P.)........: [Disabled]
    (G)MCH Frequency Latch.................:  Auto
    System Memory Multiplier ..............:  2.40B 
    Memory Frequency (Mhz) ................:  1022
    DRAM Timing Selectable ................: [Manual]
     
    Standard Timing Control
    CAS Latency Time.......................: 5
    tRCD ..................................: 6
    tRP'...................................: 6
    tRAS...................................: 18
     
    Advanced Timing Control
    tRRD...................................: 5
    tWTR...................................: 5
    tWR....................................: 8
    tRFC...................................: 54
    tRTP...................................: 5
    Command Rate (CMD) ....................: 2
     
    Driving Strength Profiles
    Driving Strength ......................: 1066 <-- Try 1100 OC setting
     
    Channel A
    Static tRead Value.....................:     8
    tRD Phase0 Adjustment..................: [Auto]
    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]
    Dimm2 Clock Skew Control...............: [Auto]
    DDR Write Training.....................: [Auto]
     
    Channel B
    Static tRead Value.....................:     8
    tRD Phase0 Adjustment..................: [Auto]
    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]
    Dimm2 Clock Skew Control...............: [Auto]
    DDR Write Training.....................: [Auto]
     
    Motherboard Voltage Control
    Voltage Type...........................: [Manual]
     
    CPU---------------------Normal-----------Current
     
    Load Line Calibration..................: [Disabled]
    CPU Vcore...............1.25000V.......: 1.28750V
    CPU Termination.........1.200V.........: 1.200V
    CPU PLL.................1.500V.........: 1.500V
    CPU Reference...........0.760V.........: [Auto]  
     
    MCH/ICH
    MCH Core................1.100V.........: 1.220V <-- Try 1.240V
    MCH Reference...........0.760V.........: [Auto]
    MCH/DRAM Reference......0.900V.........: [Auto]
    ICH I/O.................1.500V.........: 1.500V
    ICH Core................1.100V.........: 1.100V
     
    DRAM
    DRAM Voltage............1.800V.........: 2.200V <-- Spec for your RAM
    DRAM Termination........0.900V.........: [Auto]
    Channel A Reference.....0.900V.........: [Auto]
    Channel B Reference.....0.900V.........: [Auto]
    Gigabyte EP45-UD3R (F7 BIOS)
    Intel Pentium E8400 E0
    Arctic Cooling Freezer 7 Pro
    G.Skill DDR2 1066 (2x2GB) 5-5-5-15 @ 2.0V~2.1V
    EVGA GeForce 9800 GT 512MB
    (3x) Seagate Barracuda 250GB SATA II Drives
    CORSAIR 650TX 650W PSU
    Cooler Master Centurion 5 Case
    XP Professional 32-bit SP3

    Stable E8400 OC - stock voltages
    Stable E8400 OC - 3.83

  9. #59

    Default Re: Stable E8400 OC - stock voltages

    Outer Marker:

    Since I'm testing the CPU with OCCT. Should I be using the OCCT or Linpack CPU test? I've been using the OCCT CPU test of the two.

  10. #60
    Join Date
    Jan 2009
    Location
    Virginia, USA
    Posts
    115

    Default Re: Stable E8400 OC - stock voltages

    Linpack is great for a quick test. Set for only 6 runs. If you get different residual norm values, you know you are not stable within 5 minutes. However, I have seen it report stable, but fail Prime testing after 3 hours. I have used OCCT, but found that the best of all is still ORTHOS Prime. ORTHOS is great because it has a GUI and allows you to run different tests. Small FFT will test CPU, and Large FFT will test RAM. Blend test will do a bit of both.

    ORTHOS can be had here. It's just an executable, no install, so it's very compact. Download Stress Prime 2004
    Gigabyte EP45-UD3R (F7 BIOS)
    Intel Pentium E8400 E0
    Arctic Cooling Freezer 7 Pro
    G.Skill DDR2 1066 (2x2GB) 5-5-5-15 @ 2.0V~2.1V
    EVGA GeForce 9800 GT 512MB
    (3x) Seagate Barracuda 250GB SATA II Drives
    CORSAIR 650TX 650W PSU
    Cooler Master Centurion 5 Case
    XP Professional 32-bit SP3

    Stable E8400 OC - stock voltages
    Stable E8400 OC - 3.83

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