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Thread: E8400 and UD3R help to 4ghz




  1. #61
    Join Date
    Mar 2009
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    Romania :(
    Posts
    95

    Default Re: E8400 and UD3R help to 4ghz

    Psycho, I understand how the straps work. My tests included all available straps which got me under or as close to 1066 as possible with FSB 400. I understand that increasing FSB to 445 stresses MCH more than 400, but increasing MCH core up to 1.32V didn't help a bit.
    Regarding that thread you linked, thank you. I've allready read it a couple of times, but there's no statement whatsoever about my problem, which is restart during any of the tests I tryed (Prime, Orthos, LinX, IBT, OCCT) after 2-10 seconds. All the errors I see him get are prime crashing, rounding error on one or the other core, or BSOD. I'm not experiencing any of them, and I've tryed up to 1.375V vcore with LLC enabled. It would be kind of strange vcore to be the problem, as I was stable at 500x7.5 with as low as 1.275V with LLC enabled or 1.31V with LLC Disabled.
    Last edited by morph; 07-01-2009 at 08:39 AM.
    GA-EP45-UD3R (F12)
    Zalman CNPS-7000C-CU
    E8400@3.6GHz
    2x2GB A-DATA Vitesta 800+ CL4 Extreme Edition @ 1066MHz@2.0V (5-5-5-15)
    Asus EN9800GT Ultimate @ 810/2000/2200
    Seagate 250GB + WD 500GB + WD 640GB
    Asus DRW 1608-P
    BenQ G2010WP
    Thermaltake TR2 500W
    Windows 7 Pro x64

  2. #62

    Default Re: E8400 and UD3R help to 4ghz

    Quote Originally Posted by BoombasticSloth View Post
    Can those with an E8400 who has successfully run 4ghz, 24hr prime95 blend stable post their VID, and their vcore needed? Just for curiosity's sake, I want to see how accurate this regression line is for this chip. I will also update the regression line with the new data provided. You can find your VID with CoreTemp, or read the default vcore value in your bios. Thanks.

    This may also help the OP as well, so I hope I am not hijacking the OP's thread. So Callistra, how are things working out?
    500x8 and 445x9 are same for me.
    CPU Vcore….………....1.25v............................: 1.35

    However, I don't think that it's as simple as making this f(x). vCore alone won't win the race once you start North of 4.3GHz
    Quote Originally Posted by Alex St. John
    Consider for a moment that what we think of as “intelligence” is the byproduct of a computing architecture that depends on massive parallelism to interact with the world in real time without stalling for progress bars. If our ancestors’ brains had depended on running Vista on current dual-core processors for their survival, they would have been eaten by bears.

    Best Quote Ever...
    Quote Originally Posted by Psycho101
    Obey the one and only rule without question when you overclock.... don't cause a fire. Fires are hot and burny... not good.
    Intel E8400 EO@445x9--Gigabyte EP45-UD3P v1.1 ~ F9--EVGA 9800GT @ 700/1750/1100--8GB Gskill 1066

  3. #63
    Join Date
    May 2009
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    Canada
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    178

    Default Re: E8400 and UD3R help to 4ghz

    Thanks Grish for the info. I updated the chart in post #35 to include your data entry.

    You right about it not being just a function of X. The purpose of this exercise is to give people some idea of what to expect should they try to hit 4ghz with this chip. 4ghz is just nice round number that a lot of people try to achieve with this chip. I figured there would be more people likely to reach 4ghz than say 4.25ghz, and so a larger potential sample size. Also, the predictive model is limited because I am using a bivariate (only 2 variables, VID and Vcore) regression analysis, when a multvariate modeling should be done. However, this would require a whole host of other bios setting variables and hardware variables, etc. and it would be impossible to get all that data. I just simplied it to a function of VID and Vcore needed because I think more people can relate to it. Further, it only represents the samples used so the greater the sample size, the more accurate the predictive model would be in representing the sample. Again, this is just done for fun, and possible to give readers an idea of what others have done and what they might expect in their own attempts.

    Morph. I hope my prior post did not offend you because that was not the purpose. And to be clear I was not suggesting that your ram is not stable at 1066mhz nor that you don't know what you are doing. Before writing that post, I had read back to the beginning of this thread to see what you have done, and it was not clear, at least to me, as to how systematic you were, and if you indeed used manual settings for cpu ref, and or explored the other straps and SMM along with the other myriad of bios settings, and how they can have a profound affect on each other in their quirky and synergistic ways, as Psycho had eloquently pointed out. Of course I may have missed something or misread something. I have been know to do that..... probably more times than not .

    I am going to throw something out there from left field. As you seem to have tried and possibly exhausted most bios setting that may have worked for others, may I ask if you can plug a multimeter and check your voltage rails when you put your cpu under load at 4ghz. Hopefully it will be with a bios settings that at least lets you prime for a bit before failing or rebooting.
    1) Gigabyte EP45-UD3P (rev 1.1, bios F9) E8400 @445x9@1.2625v bios, TRUE 120, Scythe UltraKaze 44cfm, 4x2gb GSkill 8500, Visiontek 3870, Corsair TX850, Antec 900, Win7-64 Home.
    2) Gigabyte EP45-UD3P (rev 1.1, bios F9) E8400 @500x8.5@1.2875v bios, TRUE 120, Schythe UltraKaze 44 cfm, 4x2gb Buffalo FireStyx 8500, XFX 5770, Corsair AX850, CM Scout, WinXP Pro/Win 7-64 Home.
    3) Gigabyte P55A-UD4P (rev 1.0, bios F5) i5 750 @190x20@1.30625v bios, CM Hyper 212+, 4x2gb G.Skill Ripjaw 1600, 7900GS, Corsair TX750, CM Scout, Win7 Pro-64.
    4) Asus P8Z68-V Pro (bios 0801), i5-2500K @44x100@1.248v cpuz, Megahalem rev.B, 4x4gb GSkill Sniper 1600, Corsair AX850, Antec 902, Corsair Performance 3 128GB, Win7-64 Home.


  4. #64
    Join Date
    Mar 2009
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    Romania :(
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    Default Re: E8400 and UD3R help to 4ghz

    Hey, man, don't worry, I didn't feel offended. You could have easily missed one of my posts, or I could easily mised to post some of my settings, as I am using two forums right now for my problem. I'm really happy that you, Psycho and Grishka are trying to help me.
    Regarding what you said, I used a digital multimeter to measure the 12V rail. The voltage is steady at 12.13V when there's no load. While running orthos or prime it varies from 12.12V to 12.13V, while running LinX it varies from 12.10V to 12.13V. Also, at 3.6GHz, with no change in vcore, the readings are almost the same. Just about 0.01V more than 4GHz with 1.375V vcore.
    Last edited by morph; 07-01-2009 at 06:11 PM.
    GA-EP45-UD3R (F12)
    Zalman CNPS-7000C-CU
    E8400@3.6GHz
    2x2GB A-DATA Vitesta 800+ CL4 Extreme Edition @ 1066MHz@2.0V (5-5-5-15)
    Asus EN9800GT Ultimate @ 810/2000/2200
    Seagate 250GB + WD 500GB + WD 640GB
    Asus DRW 1608-P
    BenQ G2010WP
    Thermaltake TR2 500W
    Windows 7 Pro x64

  5. #65
    Join Date
    May 2009
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    Canada
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    Default Re: E8400 and UD3R help to 4ghz

    Voltage rails are fine then. Just trying to eliminate a possible suspect. There was another poster in a thread that had trouble getting their setup to run and we tried all the usual suspects and yet there was this erratic behavior with his computer and it turned out that one of his 4 pins on his hsf was loose. This little beastie was the cause of all his headaches. If I can recall correctly he replaced with the just stock hsf and all the problems went away. Funny what life throws your way.
    1) Gigabyte EP45-UD3P (rev 1.1, bios F9) E8400 @445x9@1.2625v bios, TRUE 120, Scythe UltraKaze 44cfm, 4x2gb GSkill 8500, Visiontek 3870, Corsair TX850, Antec 900, Win7-64 Home.
    2) Gigabyte EP45-UD3P (rev 1.1, bios F9) E8400 @500x8.5@1.2875v bios, TRUE 120, Schythe UltraKaze 44 cfm, 4x2gb Buffalo FireStyx 8500, XFX 5770, Corsair AX850, CM Scout, WinXP Pro/Win 7-64 Home.
    3) Gigabyte P55A-UD4P (rev 1.0, bios F5) i5 750 @190x20@1.30625v bios, CM Hyper 212+, 4x2gb G.Skill Ripjaw 1600, 7900GS, Corsair TX750, CM Scout, Win7 Pro-64.
    4) Asus P8Z68-V Pro (bios 0801), i5-2500K @44x100@1.248v cpuz, Megahalem rev.B, 4x4gb GSkill Sniper 1600, Corsair AX850, Antec 902, Corsair Performance 3 128GB, Win7-64 Home.


  6. #66
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    Mar 2009
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    Romania :(
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    Default Re: E8400 and UD3R help to 4ghz

    I really hope that's not the case for me, as my old Zalman only has 3 pins. I don't think PWM was available when it was made. I suppose I could plug the original HSF and power my Zalman from one of the others connectors on the MB just to rule that one out.
    GA-EP45-UD3R (F12)
    Zalman CNPS-7000C-CU
    E8400@3.6GHz
    2x2GB A-DATA Vitesta 800+ CL4 Extreme Edition @ 1066MHz@2.0V (5-5-5-15)
    Asus EN9800GT Ultimate @ 810/2000/2200
    Seagate 250GB + WD 500GB + WD 640GB
    Asus DRW 1608-P
    BenQ G2010WP
    Thermaltake TR2 500W
    Windows 7 Pro x64

  7. #67
    Join Date
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    Location
    Canada
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    178

    Default Re: E8400 and UD3R help to 4ghz

    I spoke too soon. Plexor's problems have arisen again. Sorry, I meant hs mounting pins in the prior post.
    1) Gigabyte EP45-UD3P (rev 1.1, bios F9) E8400 @445x9@1.2625v bios, TRUE 120, Scythe UltraKaze 44cfm, 4x2gb GSkill 8500, Visiontek 3870, Corsair TX850, Antec 900, Win7-64 Home.
    2) Gigabyte EP45-UD3P (rev 1.1, bios F9) E8400 @500x8.5@1.2875v bios, TRUE 120, Schythe UltraKaze 44 cfm, 4x2gb Buffalo FireStyx 8500, XFX 5770, Corsair AX850, CM Scout, WinXP Pro/Win 7-64 Home.
    3) Gigabyte P55A-UD4P (rev 1.0, bios F5) i5 750 @190x20@1.30625v bios, CM Hyper 212+, 4x2gb G.Skill Ripjaw 1600, 7900GS, Corsair TX750, CM Scout, Win7 Pro-64.
    4) Asus P8Z68-V Pro (bios 0801), i5-2500K @44x100@1.248v cpuz, Megahalem rev.B, 4x4gb GSkill Sniper 1600, Corsair AX850, Antec 902, Corsair Performance 3 128GB, Win7-64 Home.


  8. #68
    Join Date
    Mar 2009
    Location
    Romania :(
    Posts
    95

    Default Re: E8400 and UD3R help to 4ghz

    Oh, I assumed you were talking about the fan's power connector.
    GA-EP45-UD3R (F12)
    Zalman CNPS-7000C-CU
    E8400@3.6GHz
    2x2GB A-DATA Vitesta 800+ CL4 Extreme Edition @ 1066MHz@2.0V (5-5-5-15)
    Asus EN9800GT Ultimate @ 810/2000/2200
    Seagate 250GB + WD 500GB + WD 640GB
    Asus DRW 1608-P
    BenQ G2010WP
    Thermaltake TR2 500W
    Windows 7 Pro x64

  9. #69

    Default Re: E8400 and UD3R help to 4ghz

    CPU Clock Ratio.................................[ 9 ]
    Fine CPU Clock Ratio............................[ 0.0 ]
    CPU Frequency 4.0GHz............................[445 x 9.0]

    ******Clock Chip Control******

    CPU Host Clock Control..........................[ Enabled ]
    CPU Host Frequency (Mhz)........................[ 445 ]
    PCI Express Frequency (Mhz).....................[ 100 ]

    ******DRAM Performance Control******

    Performance Enhance ............................[Standard]
    Extreme Memory Profile (XMP)....................[Disabled]
    (G) MCH Frequency Latch.........................[ auto ]
    System Memory Multipler.........................[ 2.40B ]<--- to use a B strap you will need more MCH Core
    Memory Frequency 1066...........................[ 1068]
    DRAM Timing Selectable..........................[ Manual ]

    CAS Latency Time................................[ 5 ]
    tRCD............................................[ 5 ]
    tRP.............................................[ 5 ]
    tRAS............................................[ 15 ]<----16

    ******Advanced Timing Control******

    tRRD............................................[ Auto ]
    tWTR............................................[ Auto ]
    tWR.............................................[ 56 ]<-----65
    tRFC............................................[ Auto ]
    tRTP............................................[ Auto ]
    Command Rate (cmd)..............................[ 2 ]

    ******Motherboard Voltage Control******

    Load-Line Calibration ..........................[Disabled] Enable
    CPU Vcore [ 1.20 ]..............................[ 1.375 ] 1.35v, your VID is low, this should work...
    CPU Termination [ 1.20 ]........................[ 1.26 ]
    CPU PLL [ 1.50 ]................................[ 1.57 ] revert to 1.5v
    CPU Reference [ 0.760 ].........................Auto <----- Set to .76v in BIOS instead of AUTO.

    MCH Core [1.1 ].................................[ 1.26 ] <----1.28v
    MCH Reference [0.760 ]..........................[ 0.70 ] <---- set to .74 (following vtt guidlines, of course)
    MCH/DRAM Reference [0.900 ].....................Auto
    ICH I/O [1.500 ]................................[ 1.50 ]
    ICH Core [1.100 ]...............................[ 1.10 ]<----- 1.2

    DRAM Voltage [1.800 ]...........................[ 2.1 ] <----2.0v
    DRAM Termination [0.900 ].......................Auto
    Channel A Ref [0.900 ]..........................Auto
    Channel B Ref [0.900 ]..........................Auto
    morph, try turning on LLC and bumping ICH Core to 1.2v before any other of the changes that I colored in... Keep in mind that Blends test RAM hard, thus the MCH gets a good cooking too... I prefer Large Ftts.

    Also, change your CPU Ref MANUALLY to .76v. That way, when you adjust your vTerm, we can see what the CPU Ref is bumping to. In my case, once it passes .86v I need to lower the CPU Ref to compensate. Same with MCH Core, once it passes .818v or so, I have to lower MCH Ref to compensate. My sweet spot for MCH Ref seems to be between .76v and .808v.
    Quote Originally Posted by Alex St. John
    Consider for a moment that what we think of as “intelligence” is the byproduct of a computing architecture that depends on massive parallelism to interact with the world in real time without stalling for progress bars. If our ancestors’ brains had depended on running Vista on current dual-core processors for their survival, they would have been eaten by bears.

    Best Quote Ever...
    Quote Originally Posted by Psycho101
    Obey the one and only rule without question when you overclock.... don't cause a fire. Fires are hot and burny... not good.
    Intel E8400 EO@445x9--Gigabyte EP45-UD3P v1.1 ~ F9--EVGA 9800GT @ 700/1750/1100--8GB Gskill 1066

  10. #70
    Join Date
    Mar 2009
    Location
    Romania :(
    Posts
    95

    Default Re: E8400 and UD3R help to 4ghz

    I'm having the feeling that I have a really poor chip.
    1.325 vcore, LLC enabled - restart during first 1-3 seconds of orthos.
    1.35 vcore, LLC enabled - restart during 20-30 seconds of orthos.
    1.375 vcore, LLC enabled - restart during 3-10 minutes of orthos.
    I'm not willing to go any higher for 4GHz, as I'm allready seeing temps in the higher 60's during Orthos and lower to mid 70's durin LinX with 1.375 vcore.

    I've searched for the Q827A batch nr. I own, but couldn't find to much info about OC performance.
    GA-EP45-UD3R (F12)
    Zalman CNPS-7000C-CU
    E8400@3.6GHz
    2x2GB A-DATA Vitesta 800+ CL4 Extreme Edition @ 1066MHz@2.0V (5-5-5-15)
    Asus EN9800GT Ultimate @ 810/2000/2200
    Seagate 250GB + WD 500GB + WD 640GB
    Asus DRW 1608-P
    BenQ G2010WP
    Thermaltake TR2 500W
    Windows 7 Pro x64

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