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Thread: Stable E8400 OC - stock voltages




  1. #1
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    Post Stable E8400 OC - stock voltages

    Just posting this in case it helps anybody out there with a similar configuration. This represents a 20% overclock on stock voltages for the E8400 E0 stepping. Full credit goes to LSD for the original template, I just made it a tad easier to read (I'm anal like that ). Perhaps it will help some noobs like I still am

    E8400 E0 Stepping
    EP45-UD3R Motherboard
    G.SKILL 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 1066 (PC2 8500)
    Newegg.com - G.SKILL 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 1066 (PC2 8500) Dual Channel Kit Desktop Memory - Desktop Memory

    Code:
    Robust Graphics Booster ...............: [Auto]
    CPU Clock Ratio .......................: [   9]
    Fine CPU Clock Ratio...................:  +0.0
    CPU Frequency .........................: 3.60GHz
    
    Clock Chip Control 
    Standard Clock Control
    CPU Host Clock Control.................: [Enabled] 
    CPU Host Frequency (Mhz) ..............:  401Mhz
    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 ..............:  2.66D 
    Memory Frequency (Mhz) ................:  1069
    DRAM Timing Selectable ................: [Manual]
    
    Standard Timing Control
    CAS Latency Time.......................: 5
    tRCD ..................................: 5
    tRP'...................................: 5
    tRAS...................................: 15
    
    Advanced Timing Control
    tRRD...................................: 4
    tWTR...................................: 4
    tWR....................................: 6
    tRFC...................................: 54
    tRTP...................................: 4
    Command Rate (CMD) ....................: 2
    
    Driving Strength Profiles
    Driving Strength ......................: 1066
    
    Channel A
    Static tRead Value.....................:     7
    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.....................:     7
    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.......: 1.25000V
    CPU Termination.........1.200V.........: 1.200V
    CPU PLL.................1.500V.........: 1.500V
    CPU Reference...........0.760V.........: [Auto]  
    
    MCH/ICH
    MCH Core................1.100V.........: 1.200V
    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.........: 2.000V 
    DRAM Termination........0.900V.........: [Auto]
    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...................: [Disabled]
    x C4/C4E State Support.................: [Disabled]
    CPU Thermal Monitor 2(TM2) ............: [Enabled]
    CPU EIST Function......................: [Disabled]
    Virtualization Technology..............: [Disabled]
    
    Integrated Peripherals
    Legacy USB Storage Detect .............: [Disabled]
    Last edited by Outer Marker; 02-22-2009 at 02:12 AM.

  2. #2
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: Stable E8400 OC - stock voltages

    Looks good, thanks for posting for others!!

    tRRD and tRTP of 3 should work fine for you, just incase you were not done tinkering

  3. #3
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    Default Re: Stable E8400 OC - stock voltages

    How did you figure out the System Memory Multiplier to be 2.66D?

    My memory is DDR2 800 (PC2 6400) 4-5-4-11 2.1V - 2.2V. I am using the GA-EP45-UD3P and the E8400.

  4. #4
    kick's Avatar
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    Default Re: Stable E8400 OC - stock voltages

    Nice ..hmm so D will work on 333mhz cpus. I might experiment again tomorrow,its not like im going to blow anything up..I hope.
    399/401 fsb wouldnt be much use to me .. grr low multiplier but maybe ill get some good action.
    Thx for post.
    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
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  5. #5
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    Default Re: Stable E8400 OC - stock voltages

    Quote Originally Posted by PSXMAX View Post
    How did you figure out the System Memory Multiplier to be 2.66D?

    My memory is DDR2 800 (PC2 6400) 4-5-4-11 2.1V - 2.2V. I am using the GA-EP45-UD3P and the E8400.
    Well for me it wasn't so much of figuring it out as what would work with my memory. D represents the 400 Strap. Since I have 1066 MHz memory, 2.66 x 401FSB =1069 memory speed. It fits nicely. Anything less than 2.66D would have underclocked my memory. Not saying that I couldn't have done that, but I just figured 400 strap would be great for some nice loose timings, nothing hard core, just a great overclock with stock voltages. Since you have 800 Mhz memory, I think you could do the 2.00D memory multiplier at 401 FSB quite famously. At that point you would have a 1:1 FSB:DRAM ratio which some people seem to love.

  6. #6
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    Default Re: Stable E8400 OC - stock voltages

    Thanks for the help.

  7. #7
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    Default Re: Stable E8400 OC - stock voltages

    Yes, you can use 400/D multi's anytime you wish, you just need to find the correct MCH Voltage and tRD Setting to allow it to run, same applies with 333/B Multi's

  8. #8
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    Default Re: Stable E8400 OC - stock voltages

    Hi everyone, i've read the bios settings for this system, and they seem great, can I use those same settings on my system?

    The difference, is that my system has an E8500 Processor, my motherboard is the EP45-UD3P, and memory is the corsair dominator 1066.

    Thank's in advance.

    Cheers

  9. #9
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    Default Re: Stable E8400 OC - stock voltages

    Absolutely. You should be able to use these with the same success as I did. If not, they'll give you a very close starting point. Can you post a link to your exact memory type? It would help for us to see the rated memory timings and voltages in the specs to make sure they will work well.

  10. #10
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    Default Re: Stable E8400 OC - stock voltages

    Thanks for the fast responce.

    Ok, by memory modules appear on CPU-Z as, Corsair Dominator cm2x2048-8500c5d, i can't find a correct link with this reference, but they where bought as a 2x2 Gb kit, i think the link is this: http://www.corsair.com/_datasheets/T...96-8500C5D.pdf (from the official web page of corsair).

    I hope it helps.

    Thanks again.

    Cheers

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