Please report all spam threads, posts and suspicious members. We receive spam notifications and will take immediate action!
Page 6 of 13 FirstFirst ... 45678 ... LastLast
Results 51 to 60 of 129

Thread: Normal Voltage for E6750




  1. #51
    Ken429 is offline Senior Member
    Join Date
    Aug 2009
    Location
    Valapariso, Indiana
    Posts
    516

    Default Re: Normal Voltage for E6750

    Can you shed some light on the difference between "B" and "D" memory multipliers. I have the little chart that shows all the different settings for all the Northbridge/MCH straps and it sure looks like "B" (333 *4 = 1333) is the one that matches the E6750 cpu. Can you explain to a dummy what actually does the strap setting do? Will going from the 2.00D to 2.00B put less stress on the memory controller? Is there any utility like CPUZ that shows the effect?

    OFF TOPIC - What do I have to do to get back on the e-mail notification board when someone posts to this thread? It went away a few weeks ago and I cannot seem to turn the switch back on?

  2. #52
    Chike is offline Senior Member
    Join Date
    Jun 2009
    Location
    Israel
    Posts
    6,531

    Default Re: Normal Voltage for E6750

    I realy don't know what are the differences between the multipliers, obviously there is a difference.
    I for example cannot boot at all with 400MHz and 2.00B multiplier, maybe a newer BIOS will allow it.
    Some users find the B strap more stable, some different straps, find the one that is most stable for your setup. which may vary with FSB.

  3. #53
    Ken429 is offline Senior Member
    Join Date
    Aug 2009
    Location
    Valapariso, Indiana
    Posts
    516

    Default Re: Normal Voltage for E6750

    Any more ideas that might help me get this thing to go a little faster? Here is the status report:

    • Lowered MCH Reference from .798 to .758V - 2 notches. Ran OCCT to completion 60 minutes no errors.
    • Changed the Memory Strap from 2.00D to 2.00B. Ran OCCT to completion 60 minutes no errors.
    • Changed the FSB from 450 to 455. Blue Screen.
    • Changed the MCH Reference from .758 to .738V - 1 notch. OCCT reported a Core 1 Error after < 2 minutes.
    • Upped the Vcore from 1.40 to 1.4120V - 2 notches. OCCT rebooted W7 after ~ 15 minutes.


    I have not rerun Prime95 @450 but it would seem that we have not found the root problem since going from 450 to 455 causes all kinds of bad things to happen.

  4. #54
    Chike is offline Senior Member
    Join Date
    Jun 2009
    Location
    Israel
    Posts
    6,531

    Default Re: Normal Voltage for E6750

    Stay with 2.00D for now.
    Lets make sure the 450MHz FSB settings are stable then try to move up, 1 hour OCCT does not mean much.
    Run 1-2 hots Prime95 small FFT the 8+ hours blend.
    Are your temperatures allow you to run IBT?

  5. #55
    profJim's Avatar
    profJim is online now Chief Munchkin + moderator
    Join Date
    Dec 2008
    Location
    Tacoma, WA. [USA]
    Posts
    7,811

    Default Re: Normal Voltage for E6750

    It's not clear what steps you took to adjust MCH Reference and/or CPU Reference settings. This is the procedure to use when adjusting these settings.
    1. Temporarily set CPU Termination (VTT) = 1.20
    2. Make desired adjustments to either or both of these Reference settings
    3. Set VTT back to the desired setting
    The following comment in your posted bios setting will make it perfectly clear which settings were used and applied:
    MCH Reference ----------- 0.7600V ------- : [0.???] 0.### set @ VTT = 1.20
    Where 0.??? is the adjusted value displayed after resetting VTT and 0.### is the new setting that you selected while VTT = 1.20 was temporarily set.

    When needed:
    • dual core processors usually respond to lowering these reference voltages
    • quad core processors usually respond to raising these reference voltages

    and you use the above procedure when making any changes.

    Increasing VTT often helps with stability. The general guideline is that VTT should be at least 0.05 - 0.10 volts lower than CPU Vcore.

    MCH Vcore = 1.28 might required.
    ICH I/O = 1.57 or 1.59 might help.
    DRAM Voltage = 2.05 might help.

    The MCH or North Bridge memory straps each have unique "internal" settings.
    This post in the EP45-UD3R E8500 overclocking thread has general DDR2 tRD settings and a link to the Anandtech Asus ROG Rampage review where they go into excruciating detail that covers memory straps and more.

    FWIW, my E6550 is stable with a 48% overclock.
    My stock cpu VID is 1.35 volts and my overclock uses 1.36825 volts.
    I could boot and run stability tests up to 527MHz, but my system failed stability tests with a 495MHz FSB or higher.

    Your E6750 should probably be stable with a 40% or somewhat higher overclock.
    Q9650 @ 4.10GHz [9x456MHz]
    P35-DS4 [rev: 2.0] ~ Bios: F14
    4x2GB OCZ Reaper PC2-8500 1094MHz @5-5-5-15
    MSI N460GTX Hawk Talon Attack (1GB) video card <---- SLI ---->
    Seasonic SS-660XP2 80 Plus Platinum psu (660w)
    WD Caviar Black WD6401AALS 640GB (data)
    Samsung 840 Pro 256GB SSD (boot)
    SLI @ 16/4 works when running HyperSLI
    Cooler Master 120XL Seidon push/pull AIO cpu water cooling
    Cooler Master HAF XB computer case (RC-902XB-KKN1)
    Asus VH242H 24" monitor [1920x1080]
    MSI N460GTX Hawk (1GB) video card
    Logitech Z-5500 Digital 5.1 Speakers
    win7 x64 sp1 Home Premium
    HT|Omega Claro plus+ sound card
    CyberPower CP1500PFCLCD UPS
    E6300 (R0) @ 3.504GHz [8x438MHz] ~~ P35-DS3L [rev: 1.0] ~ Bios: F9 ~~ 4x2GB Kingston HyperX T1 PC2-8500, 876MHz @4-4-4-10
    Seasonic X650 80+ gold psu (650w) ~~ Xigmatek Balder HDT 1283 cpu cooler ~~ Cooler Master CM 690 case (RC-690-KKN1-GP)
    Samsung 830 128GB SSD MZ-7PC128B/WW (boot) ~~ WD Caviar Black WD6401AALS 640GB (data) ~~ ZM-MFC2 fan controller
    HT|Omega Striker 7.1 sound card ~~ Asus VH242H monitor [1920x1080] ~~ Logitech Z-5500 Digital 5.1 Speakers
    win7 x64 sp1 Home Premium ~~ CyberPower CP1500PFCLCD U.P.S
    .


  6. #56
    Ken429 is offline Senior Member
    Join Date
    Aug 2009
    Location
    Valapariso, Indiana
    Posts
    516

    Default Re: Normal Voltage for E6750

    Welcome back to my self inflicted world of hurt!

    I did the set VTT to 1.20V and lowered the MCH Reference 1, 2, or 3 notches and then increased the VTT back to 1.26V. Lowering the MCH Reference had a negative effect. At default Prime95 ran for 5 hours and 15 minutes before a rounding error was posted. Lowering it 1, 2 or 3 notches caused Prime95 to fail in 2 hours or less in each case.

    Based on your system it would appear I have gone down the same path I did with the Q9550 system - Increased the Vcore to beyond sensable until the whole system is screwed up?! When you say 1.36825V - is that what is set in the BIOS? Should I lower the Vcore a couple of notches - is 1.40V way too high? What about the MCH Reference - should I lower it or leave it at default until we get it to run stable at 450 FSB. It got close at default settings with all the other "bad" settings. I suspected there were other issues since at 455 FSB it would crash almost immediately in OCCT.

    I will make the other changes you suggested.
    • MCH Vcore is now 1.28V
    • ICH I/O is now 1.57V
    • DRAM Voltage is now 2.06V.

  7. #57
    Chike is offline Senior Member
    Join Date
    Jun 2009
    Location
    Israel
    Posts
    6,531

    Default Re: Normal Voltage for E6750

    Anything that has a negative effect - don't do it. Leave MCH Reference at default, or try 1-2 steps higher.
    Try the same with CPU Reference, higher or lower.
    Maybe you do need higher VTT.

  8. #58
    Ken429 is offline Senior Member
    Join Date
    Aug 2009
    Location
    Valapariso, Indiana
    Posts
    516

    Default Re: Normal Voltage for E6750

    ProfJim, Thanks for the pointer to the AnandTech article and the Strap explanation. I'll have to reread a few times before it sinks in but I guess for now I like the 2.00D Strap. I have failed on all attempts to run at FSB 450 at the 5-5-5-15 everything else AUTO memory settings. I did all the things you suggested and never got past 3 hours running Prime95. Yet, I can run @ Prime95 for 6+ hours @ FSB 430 when the machine is set at 4-4-4-12 everything else AUTO settings. I'm currently letting it run at 440 FSB at the C4 setings and I'm pretty sure it will be relatively stable. The Vcore is at 1.3750V. I did change the DRAM to 2.06V and the ICH I/O to 1.57V based on your suggestions getting ready for the 450 jump but it was stable at 2.02V and 1.50V. So... it seems as soon as I go to 5-5-5-15 everything else AUTO memory settings, which should be looser, the system becomes unstable no matter what I change. Could it be possible that I need to override one or more of the AUTO memory settings? Could I use the setting you gave me for the Q9550 (see below). I know I could run it at FSB 430 or 440 @C5 and see what happens to prove the point!

    Code:
    Standard Timing Control
    CAS Latency Time -------- 5 ------------ : [5]		
    tRCD -------------------- 7 ------------ : [   5]	
    tRP --------------------- 7 ------------ : [   5]	
    tRAS ------------------- 24 ------------ : [  15]	
    
    Advanced Timing Control    [Press Enter]
    tRRD -------------------- 4 ------------ : [ 3]		
    tWTR -------------------- 4 ------------ : [ 3]		
    tWR --------------------- 8 -------------: [ 5]		
    tRFC --------------------68 ------------ : [52]		
    tRTP -------------------- 4 ------------ : [ 3]		
    Command Rate (CMD) ------ 0 -------------: [Auto]
    
    Channel A
    Channel A Timing Settings  [Press Enter]
    Static tRead Value ------ 8 ------------ : [ 8]		
    tRD Phase0 Adjustment --- 0 ------------ : [Auto]
    tRD Phase1 Adjustment --- 0 ------------ : [Auto]
    tRD Phase2 Adjustment --- 0 ------------ : [Auto]
    tRD Phase3 Adjustment --- 0 ------------ : [Auto]
    
    Trd2rd(Different Rank) -- 8 ------------ : [Auto]
    Twr2wr(Different Rank) -- 8 ------------ : [Auto]
    Twr2rd(Different Rank) -- 7 ------------ : [Auto]
    Trd2wr(Same/Diff Rank) -- 9 ------------ : [Auto]
    
    Dimm1 Clock Skew Control --------------- : [Auto]
    Dimm2 Clock Skew Control --------------- : [Auto]
    DDR Write Training --------------------- : [Auto]
    
    Channel B
    Channel B Timing Settings  [Press Enter]
    Static tRead Value ------ 8 ------------ : [ 8]		
    tRD Phase0 Adjustment --- 0 ------------ : [Auto]
    tRD Phase1 Adjustment --- 0 ------------ : [Auto]
    tRD Phase2 Adjustment --- 0 ------------ : [Auto]
    tRD Phase3 Adjustment --- 0 ------------ : [Auto]
    
    Trd2rd(Different Rank) -- 8 ------------ : [Auto]
    Twr2wr(Different Rank) -- 8 ------------ : [Auto]
    Twr2rd(Different Rank) -- 7 ------------ : [Auto]
    Trd2wr(Same/Diff Rank) -- 9 ------------ : [Auto]
    
    Dimm1 Clock Skew Control --------------- : [Auto]
    Dimm2 Clock Skew Control --------------- : [Auto]
    DDR Write Training --------------------- : [Auto]
    
    Channel A Driving Settings [Press Enter]
    Driving Strength Profile --------------- : [Auto]
    Data Driving Pull-Up Level ------------- : [Auto]
    Cmd  Driving Pull-Up Level ------------- : [Auto]
    Ctrl Driving Pull-Up Level ------------- : [Auto]
    Clk  Driving Pull-Up Level ------------- : [Auto]
    
    Data Driving Pull-Down Level ----------- : [Auto]
    Cmd  Driving Pull-Down Level ----------- : [Auto]
    Ctrl Driving Pull-Down Level ----------- : [Auto]
    Clk  Driving Pull-Down Level ----------- : [Auto]
    
    Channel B Driving Settings [Press Enter]
    Driving Strength Profile --------------- : [Auto]
    Data Driving Pull-Up Level ------------- : [Auto]
    Cmd  Driving Pull-Up Level ------------- : [Auto]
    Ctrl Driving Pull-Up Level ------------- : [Auto]
    Clk  Driving Pull-Up Level ------------- : [Auto]
    
    Data Driving Pull-Down Level ----------- : [Auto]
    Cmd  Driving Pull-Down Level ----------- : [Auto]
    Ctrl Driving Pull-Down Level ----------- : [Auto]
    Clk  Driving Pull-Down Level ----------- : [Auto]

  9. #59
    profJim's Avatar
    profJim is online now Chief Munchkin + moderator
    Join Date
    Dec 2008
    Location
    Tacoma, WA. [USA]
    Posts
    7,811

    Default Re: Normal Voltage for E6750

    Give the Q9550 advanced memory timings a try, they're not not overly aggressive.
    Have you tried using the 2.00B memory strap?
    I've had no trouble using the B or D straps with the 2.00x memory strap. Some have found that they had an easier time getting their systems stable using the D strap.

    I had no problem using the 2.40B memory multiplier up to 458MHz and this gave 1101MHz memory speeds using 5-5-5-15 with 2.02 Dram Voltage. With my 7x maximum cpu multiplier, my system performance was about 5% worse than my final 492MHz settings in my signature.

    The Anantech article is very technical. Concentrate on the higher level concepts for now. In time the details will more understandable.
    Q9650 @ 4.10GHz [9x456MHz]
    P35-DS4 [rev: 2.0] ~ Bios: F14
    4x2GB OCZ Reaper PC2-8500 1094MHz @5-5-5-15
    MSI N460GTX Hawk Talon Attack (1GB) video card <---- SLI ---->
    Seasonic SS-660XP2 80 Plus Platinum psu (660w)
    WD Caviar Black WD6401AALS 640GB (data)
    Samsung 840 Pro 256GB SSD (boot)
    SLI @ 16/4 works when running HyperSLI
    Cooler Master 120XL Seidon push/pull AIO cpu water cooling
    Cooler Master HAF XB computer case (RC-902XB-KKN1)
    Asus VH242H 24" monitor [1920x1080]
    MSI N460GTX Hawk (1GB) video card
    Logitech Z-5500 Digital 5.1 Speakers
    win7 x64 sp1 Home Premium
    HT|Omega Claro plus+ sound card
    CyberPower CP1500PFCLCD UPS
    E6300 (R0) @ 3.504GHz [8x438MHz] ~~ P35-DS3L [rev: 1.0] ~ Bios: F9 ~~ 4x2GB Kingston HyperX T1 PC2-8500, 876MHz @4-4-4-10
    Seasonic X650 80+ gold psu (650w) ~~ Xigmatek Balder HDT 1283 cpu cooler ~~ Cooler Master CM 690 case (RC-690-KKN1-GP)
    Samsung 830 128GB SSD MZ-7PC128B/WW (boot) ~~ WD Caviar Black WD6401AALS 640GB (data) ~~ ZM-MFC2 fan controller
    HT|Omega Striker 7.1 sound card ~~ Asus VH242H monitor [1920x1080] ~~ Logitech Z-5500 Digital 5.1 Speakers
    win7 x64 sp1 Home Premium ~~ CyberPower CP1500PFCLCD U.P.S
    .


  10. #60
    profJim's Avatar
    profJim is online now Chief Munchkin + moderator
    Join Date
    Dec 2008
    Location
    Tacoma, WA. [USA]
    Posts
    7,811

    Default Re: Normal Voltage for E6750

    Are you testing with IBT or LinX for 10 loops before you run Prime95? On my C2D system, setting Threads = 2 and Memory = 2047 generates more heat, higher cpu utilization, and shorter test times.
    Let us know the details of any failed Prime95 test.
    Failures with a large FFT size generally point to memory setting issues.
    Small FFT size errors point toward cpu setting problems.
    Q9650 @ 4.10GHz [9x456MHz]
    P35-DS4 [rev: 2.0] ~ Bios: F14
    4x2GB OCZ Reaper PC2-8500 1094MHz @5-5-5-15
    MSI N460GTX Hawk Talon Attack (1GB) video card <---- SLI ---->
    Seasonic SS-660XP2 80 Plus Platinum psu (660w)
    WD Caviar Black WD6401AALS 640GB (data)
    Samsung 840 Pro 256GB SSD (boot)
    SLI @ 16/4 works when running HyperSLI
    Cooler Master 120XL Seidon push/pull AIO cpu water cooling
    Cooler Master HAF XB computer case (RC-902XB-KKN1)
    Asus VH242H 24" monitor [1920x1080]
    MSI N460GTX Hawk (1GB) video card
    Logitech Z-5500 Digital 5.1 Speakers
    win7 x64 sp1 Home Premium
    HT|Omega Claro plus+ sound card
    CyberPower CP1500PFCLCD UPS
    E6300 (R0) @ 3.504GHz [8x438MHz] ~~ P35-DS3L [rev: 1.0] ~ Bios: F9 ~~ 4x2GB Kingston HyperX T1 PC2-8500, 876MHz @4-4-4-10
    Seasonic X650 80+ gold psu (650w) ~~ Xigmatek Balder HDT 1283 cpu cooler ~~ Cooler Master CM 690 case (RC-690-KKN1-GP)
    Samsung 830 128GB SSD MZ-7PC128B/WW (boot) ~~ WD Caviar Black WD6401AALS 640GB (data) ~~ ZM-MFC2 fan controller
    HT|Omega Striker 7.1 sound card ~~ Asus VH242H monitor [1920x1080] ~~ Logitech Z-5500 Digital 5.1 Speakers
    win7 x64 sp1 Home Premium ~~ CyberPower CP1500PFCLCD U.P.S
    .


Page 6 of 13 FirstFirst ... 45678 ... LastLast

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •