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Thread: Voltage seems too high for 3.0Ghz Q6600 + EP45-UD3R...




  1. #11
    profJim's Avatar
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    Default Re: Voltage seems too high for 3.0Ghz Q6600 + EP45-UD3R...

    Several general guidelines:
    • Running with cpu host frequency = 400 sometimes causes problems, but if you run at 398 - 399 or 401 - 402 you might not have stability problems.
    • At 400MHz & higher, using the B-strap will often let you use tRD (Static tRead Value) one step tighter (lower) than using the D-strap, up to about 460MHz. Some find it easier to get a stable setup when using the D-strap. It's not recommended to use the memory D-strap below 400MHz.

    Increasing VTT (Cpu Termination) can help with stabilizing a system. Ideally this setting should be lower than Cpu Vcore by at least 0.05 - 0.10 volts. Some overclocked systems are stable with VTT near the stock setting, others require VTT to be close to Cpu Vcore. Your goal is to set VTT to the lowest stable value.

    1. I suggest lowering Cpu Vcore and increasing VTT at the same time to see if this setup is stable.
    2. With your 2x2GB PC2-6400 memory, try running with MCH Core = 1.16 -1.20 volts. I've seen several Gkill 8500 memory systems that are only stable with MCH Core = 1.05 (sometimes lower).

    Start with step #1. Don't do both steps at the same time, as there are too many variables being changed at the same time.

    I'm not a fan of enabling LLC (LoadLine Calibration) but I've seen a fair number of setups in the forum where the only way to get a stable system was to enable LLC when performing high overclocks. With LLC enabled, the vdroop is less and you can then lower CPU Vcore several steps. You can compute the vdroop value by checking the Vcore value in the bios PC Health Status screen and the Core Voltage value displayed in the Cpu-Z screen. Vdrop is the difference between the Cpu Vcore setting in the M.I.T. bios and the Vcore value in the bios PC Health Status screen.

    Which SpinQ cpu cooler are you using, the older "horizontal" setup or the newer "tower" VT version?
    Q9650 @ 4.10GHz [9x456MHz]
    P35-DS4 [rev: 2.0] ~ Bios: F14
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  2. #12
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    Default Re: Voltage seems too high for 3.0Ghz Q6600 + EP45-UD3R...

    Quote Originally Posted by profJim View Post
    Several general guidelines:
    • Running with cpu host frequency = 400 sometimes causes problems, but if you run at 398 - 399 or 401 - 402 you might not have stability problems.
    • At 400MHz & higher, using the B-strap will often let you use tRD (Static tRead Value) one step tighter (lower) than using the D-strap, up to about 460MHz. Some find it easier to get a stable setup when using the D-strap. It's not recommended to use the memory D-strap below 400MHz.

    Increasing VTT (Cpu Termination) can help with stabilizing a system. Ideally this setting should be lower than Cpu Vcore by at least 0.05 - 0.10 volts. Some overclocked systems are stable with VTT near the stock setting, others require VTT to be close to Cpu Vcore. Your goal is to set VTT to the lowest stable value.

    1. I suggest lowering Cpu Vcore and increasing VTT at the same time to see if this setup is stable.
    2. With your 2x2GB PC2-6400 memory, try running with MCH Core = 1.16 -1.20 volts. I've seen several Gkill 8500 memory systems that are only stable with MCH Core = 1.05 (sometimes lower).

    Start with step #1. Don't do both steps at the same time, as there are too many variables being changed at the same time.

    I'm not a fan of enabling LLC (LoadLine Calibration) but I've seen a fair number of setups in the forum where the only way to get a stable system was to enable LLC when performing high overclocks. With LLC enabled, the vdroop is less and you can then lower CPU Vcore several steps. You can compute the vdroop value by checking the Vcore value in the bios PC Health Status screen and the Core Voltage value displayed in the Cpu-Z screen. Vdrop is the difference between the Cpu Vcore setting in the M.I.T. bios and the Vcore value in the bios PC Health Status screen.

    Which SpinQ cpu cooler are you using, the older "horizontal" setup or the newer "tower" VT version?
    Thanks again Jim, the spinq I'm using is this one. I've seen mixed reviews about the cooler but my guess is it's not the greatest for what I'm doing. I changed the VTT and Vcore like you suggested. While trying to boot windows using 401x8 I had to up my vcore last night to around 1.46 in BIOS. So now I'm going to try backing off the vcore a bit(around 1.45 now) and upping my VTT to around 1.3 and see if that helps stability. I'm able to boot windows and I'm going to see if I can run Prime95 small ffts without any issues. It usually fails relatively quick or my temps hit 71 full load within 15 mins or so.

    and Quaker thanks for your info I'm going to mess around with the settings you supplied as well and see if they match the table you provided. Unfortunately I have to go out of town until wednesday night so I can't mess around with it tonight or tomorrow but I will be checking this thread via my phone and any more suggestions will be most appreciated.

    EDIT: Couldn't boot into windows without LLC enabled with these settings: vcore - 1.45, PLL - 1.57, VTT - 1.26. So I enabled LLC and upped the vcore just slightly to 1.476 until I was able to boot windows and try running Prime95. Had a hardware failure in worker #2 within seconds of starting the test while temps were approximately 65 degrees, cant imagine how high they would be if the test were to continue :/
    Last edited by SCND30; 03-29-2011 at 05:58 AM.
    Intel Core 2 Quad Q6600 (VID - 1.325) 3.0Ghz @ 333@9 1.4V
    Thermaltake SpinQ
    GIGABYTE GA-EP45-UD3R - Updated bios
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  3. #13
    profJim's Avatar
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    Default Re: Voltage seems too high for 3.0Ghz Q6600 + EP45-UD3R...

    Your SpinQ fan needs to be replaced. I've recently read several reviews where your model or the newer SpinQ VT were mediocre at best, with cpu load temperatures that are typically 8 - 10 degrees higher than the better mid priced cpu coolers.

    Check out OC help with Q6600 on UD3R post #10 where you can buy a decent Xigmatek cpu cooler for less than $25 after rebate. The Newegg rebate is good through March 31st. I like the idea of being able to easily add a second fan (if needed) for additional cooling. The Dark Knight model offers similar performance and has several very positive Q6600 user reviews. The only possible downside with either of these units is that they come with an 89 cfm fan that is loud when the fan speed is above 1600 rpm. Maximum fan speed is 2200 rpm.

    **edit**
    I just found the attached information from XbitLabs:

    Voltage seems too high for 3.0Ghz Q6600 + EP45-UD3R...-xbitlabs-cooling-temperature-chart-spinq-vt-versus-balder-png
    Last edited by profJim; 03-30-2011 at 06:26 AM.
    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
    .


  4. #14
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    Default Re: Voltage seems too high for 3.0Ghz Q6600 + EP45-UD3R...

    So is it safe to say that with this setup and the spinq that achieving 3.2ghz is not possible because of the temps? Just clarifying for sure so I can explore the other CPU cooking alternatives like you suggested.
    Intel Core 2 Quad Q6600 (VID - 1.325) 3.0Ghz @ 333@9 1.4V
    Thermaltake SpinQ
    GIGABYTE GA-EP45-UD3R - Updated bios
    G.SKILL 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400)
    Sapphire Radeon HD 5870 1GB GDDR5
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  5. #15
    Chike is offline Senior Member
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    Default Re: Voltage seems too high for 3.0Ghz Q6600 + EP45-UD3R...

    Quote Originally Posted by SCND30 View Post
    So is it safe to say that with this setup and the spinq that achieving 3.2ghz is not possible because of the temps? Just clarifying for sure so I can explore the other CPU cooking alternatives like you suggested.
    Probably so.
    Check out Gerardz settng for 3.2GHz. He seems to have a great chip, but although his default vcore is lower than yours and he made it to 3.2GHz with "normal" settings, he had to upgrade his CPU cooler (from stock) and doing quite well with Xigmatek Dark Knight.

    But please post full BIOS settings for 3.2GHz, and lets see if you can run with lower vcore.

  6. #16
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    Default Re: Voltage seems too high for 3.0Ghz Q6600 + EP45-UD3R...

    Quote Originally Posted by Chike View Post
    Probably so.
    Check out Gerardz settng for 3.2GHz. He seems to have a great chip, but although his default vcore is lower than yours and he made it to 3.2GHz with "normal" settings, he had to upgrade his CPU cooler (from stock) and doing quite well with Xigmatek Dark Knight.

    But please post full BIOS settings for 3.2GHz, and lets see if you can run with lower vcore.
    Thanks again Chike - I can already guarantee it won't even post with anything lower than approximately 1.46 vcore and if it does boot windows (if memory serves me right) itll freeze immediately during prime95. But I can give it a try and post my full BIOS settings. Let me ask this, when you order a Q6600 is it random if you're given one with a lower VID? or is that something you specify when ordering the chip?
    Intel Core 2 Quad Q6600 (VID - 1.325) 3.0Ghz @ 333@9 1.4V
    Thermaltake SpinQ
    GIGABYTE GA-EP45-UD3R - Updated bios
    G.SKILL 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400)
    Sapphire Radeon HD 5870 1GB GDDR5
    Rosewill BRONZE Series RBR1000-M 1000W
    LG W2753V-PF 27" @ 1920x1080

  7. #17
    Chike is offline Senior Member
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    Default Re: Voltage seems too high for 3.0Ghz Q6600 + EP45-UD3R...

    Yes the VID you get is random, it is set according to the tests it goes durinng manufactoring/binig.
    I had E7200 with VID 1.063v, did 3.8GHz with 1.365v in BIOS, but very hot, the E7500 has VID1.238 and need 1.39375v in BIOS for 3.8GHz, load temps are lower.
    Please post full settings, and lets see what we can do.

  8. #18
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    Default Re: Voltage seems too high for 3.0Ghz Q6600 + EP45-UD3R...

    Quote Originally Posted by Chike View Post
    Yes the VID you get is random, it is set according to the tests it goes durinng manufactoring/binig.
    I had E7200 with VID 1.063v, did 3.8GHz with 1.365v in BIOS, but very hot, the E7500 has VID1.238 and need 1.39375v in BIOS for 3.8GHz, load temps are lower.
    Please post full settings, and lets see what we can do.
    Chike - Here are the settings I left off at, with these I was able to boot into windows but every time I ran P95 with small ffts either a worker stopped or the system froze in no longer than 30 seconds. I could probably increase the vcore but I'm almost afraid to go above where I left off for fear that I shouldn't be up this high to begin with. Honestly if I could even OC this to 3.1 ghz I'll be satisfied. Anyways here's where I left off unsuccessfully at 3.2ghz:

    MB Intelligent Tweaker(M.I.T.)
    Robust Graphics Booster -------------- : [Auto]
    CPU Clock Ratio ---------------------- : [8]
    Fine CPU Clock Ratio ----------------- : [0.0] <-- ignore if not available
    CPU Frequency ---------------------: 3.20 <-- this is set by your bios

    Clock Chip Control
    Standard Clock Control
    CPU Host Clock Control --------------- : [Enabled]
    CPU Host Frequency (Mhz) --------------: [401]
    PCI Express Frequency (Mhz) ---------- : [100] <--- Set to 100, never leave this on Auto

    C.I.A.2 ------------------------------ : [Disabled]

    Advanced Clock Control ------- [Press Enter]
    CPU Clock Drive ---------------------- : [800]
    PCI Express Clock Drive -------------- : [900]
    CPU Clock Skew (ps) ------------------ : [0]
    MCH Clock Skew (ps) ------------------ : [0]

    DRAM Performance Control
    Performance Enhance ------------------- : [Standard] <--- set to STANDARD when overclocking
    Extreme Memory Profile --- (X.M.P.) --- : [Disabled] <--- Leave this Disabled
    (G)MCH Frequency Latch ---------------- : [Auto]
    System Memory Multiplier -------------- : [2.00D] <-- this is the setting that you are using
    Memory Frequency (Mhz) ---------------- : [800 800]
    DRAM Timing Selectable ---------------- : [Auto] <-- set to MANUAL for overclocking

    Standard Timing Control
    CAS Latency Time -------- 5 ---------- : [Auto]
    tRCD ------------------- 5 ---------- : [Auto]
    tRP --------------------- 5 ---------- : [Auto]
    tRAS ------------------- 15 ---------- : [Auto]

    Advanced Timing Control
    tRRD ------------------- 3 ---------- : [Auto]
    tWTR ------------------- 3 ---------- : [Auto]
    tWR --------------------- 4 ---------- : [Auto]
    tRFC ------------------- 52 ---------- : [Auto]
    tRTP ------------------- 3 ---------- : [Auto]
    Command Rate (CMD) -------------------- : [2] <--- Auto or 0 is OK

    Driving Strength Profiles
    Driving Strength --------- : Press Enter <--- press ENTER to modify memory sub-timings when overclocking

    Channel A
    Static tRead Value --------------------- : [Auto]
    tRD Phase0 Adjustment ------------------ : [Auto] <-- leave this and below set to 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] ps
    Dimm2 Clock Skew Control --------------- : [Auto] ps

    Channel B
    Static tRead Value --------------------- : [Auto]
    tRD Phase0 Adjustment ------------------ : [Auto] <-- leave this and below set to 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] ps
    Dimm2 Clock Skew Control --------------- : [Auto] ps

    Motherboard Voltage Control
    CPU
    Voltage Types------------ Normal -------- Current -----
    Load-Line Calibration ----------------- : [Enabled]
    CPU Vcore --------------- 1.3500V ---- : [1.46500V]

    CPU Termination --------- 1.200V* ----- : [1.300V]
    CPU PLL ----------------- 1.500V* ----- : [1.570V]

    CPU Reference ----------- 0.760V* ----- : [Auto]
    CPU Reference2 ---------- ?? ----- : [Auto]

    MCH/ICH
    MCH Core ---------------- 1.100V ------- : [1.200V]
    MCH Reference ----------- 0.760V ------- : [Auto]
    MCH/DRAM Ref ------------ 0.900V ------ : [Auto]
    ICH I/O ----------------- 1.1500V ------- : [1.500V]
    ICH Core ---------------- 1.100V ------- : [1.100V]
    DRAM
    DRAM Voltage ------------ 1.800V ------- : [1.900V]
    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]
    Intel Core 2 Quad Q6600 (VID - 1.325) 3.0Ghz @ 333@9 1.4V
    Thermaltake SpinQ
    GIGABYTE GA-EP45-UD3R - Updated bios
    G.SKILL 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400)
    Sapphire Radeon HD 5870 1GB GDDR5
    Rosewill BRONZE Series RBR1000-M 1000W
    LG W2753V-PF 27" @ 1920x1080

  9. #19
    Chike is offline Senior Member
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    Default Re: Voltage seems too high for 3.0Ghz Q6600 + EP45-UD3R...

    OK, kets try this.
    First set:
    CPU Ratio 6
    Vcore 1.35v
    VTT(CPU Termination) 1.2v
    MCH Reference 0.760v.
    Static tRead Value 10, on both channels. and see if you can pass Prime95 small and large 1-2 hours each.
    If they fail, try, 0.74, 0.72, and 0.70 MCH Reference, then 1-3 clicks MCH Reference above 0.76(I forgot the options).
    Last edited by Chike; 03-31-2011 at 09:19 PM.

  10. #20
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    Default Re: Voltage seems too high for 3.0Ghz Q6600 + EP45-UD3R...

    Quote Originally Posted by Chike View Post
    OK, kets try this.
    First set:
    CPU Ratio 6
    Vcore 1.35v
    VTT(CPU Termination) 1.2v
    MCH Reference 0.760v.
    Static tRead Value 10, on both channels. and see if you can pass Prime95 small and large 1-2 hours each.
    If they fail, try, 0.74, 0.72, and 0.70 MCH Reference, then 1-3 clicks MCH Reference above 0.76(I forgot the options).
    OK I'll give these a go, I'll check back with you on the results when I get back from work tonight. I'll let you know if they fail. Thanks again.
    Intel Core 2 Quad Q6600 (VID - 1.325) 3.0Ghz @ 333@9 1.4V
    Thermaltake SpinQ
    GIGABYTE GA-EP45-UD3R - Updated bios
    G.SKILL 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400)
    Sapphire Radeon HD 5870 1GB GDDR5
    Rosewill BRONZE Series RBR1000-M 1000W
    LG W2753V-PF 27" @ 1920x1080

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