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Thread: Overclocking UD4P & QPI/VTT question




  1. #1
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    Default Overclocking UD4P & QPI/VTT question

    Hi,
    I've currently got my system running a blck of 175 to give me 3500GHz which with Turbo Boost on gets me to around 3650GHz I think. I'm very pleased with this so far considering all I have done is change the blck to 175 & cpu voltage to 1.3 and everything else is on auto!

    Anyway, I was thinking about upping it a tad and was looking at other peoples settings.

    My query is related to QPI/VTT..
    Currently this is on auto [1.175v] so if I increase my CPU Vcore to something like 1.365v Im guessing I will need to increase QPI/VTT to a similar figure (as I understand it these 2 figures need to be quite close together?).

    I was about to increase it but as I was looking thru the voltages for QPI/VTT once the range goes above 1.355v the figures are shown in red - does this tell me they are unsafe voltages to use?

    i7 920
    UD4P
    Corsair 6Gb DDR3 PC3-10666

  2. #2
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    Default Re: Overclocking UD4P & QPI/VTT question

    I have a EX58-DS4 board and find that if you leave everything on auto and up the bclk to 200 to get a 4/4.2 GHz overclock (I haven't tried anything higher). You can then read the actual votages and optimise them from there, they can be decreased in most cases.

    Strangely, I found taking QPI out of auto and settings between 1.25-1.4 V did not work.

  3. #3
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    Default Re: Overclocking UD4P & QPI/VTT question

    Quote Originally Posted by tnzz View Post
    I have a EX58-DS4 board and find that if you leave everything on auto and up the bclk to 200 to get a 4/4.2 GHz overclock (I haven't tried anything higher). You can then read the actual votages and optimise them from there, they can be decreased in most cases.

    Strangely, I found taking QPI out of auto and settings between 1.25-1.4 V did not work.
    Thanks, hadn't thought to try that to be honest as everything I had read elsewhere suggested that leaving things on auto is good up to about 3.500/3.600GHz..

    Will give it a go.

  4. #4
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: Overclocking UD4P & QPI/VTT question

    QPI Voltage depends on a few things, your CPU for starters as of course they are not all the same. Then you have to take in to account your Blck, actual ram speed and amount, the memory multiplier you are using, the Uncore speed, and timings set as well.

    I would advise it to be manually set if you are overclocking, and no you do not need to keep it within any range of the Vcore you can go above it as well if you need to, you can use 1.1-1.45+ QPI/Vtt if need be, but that much is often not needed. The higher ranges of that may or may not be needed depending on all of the above mentioned factors

    What you do need to keep is your ram voltage within .5 of QPI. So that means if you use 1.35 QPI then you can use 1.85 Ram voltage without worries
    Last edited by Lsdmeasap; 03-26-2009 at 01:43 PM.

  5. #5
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    Default Re: Overclocking UD4P & QPI/VTT question

    Many thanks, I'll have a go and let u know how I get on!

  6. #6
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    Default Re: Overclocking UD4P & QPI/VTT question

    Hi there.. Ive tried a couple of different settings to get a slightly higher clock but its not working for me at the moment and pc isnt booting over 185 blck.. Id be very grateful if someone could look over my settings and see if they can spot anything or make any suggestions..

    I like the idea of Turbo being left on - seems like a good idea to me anyway..?

    .................................................. .............
    i7 920 with UD4P
    6Gb Corsair DDR3 PC3-10666 (1333) 9-9-9-24
    .................................................. .............

    Advanced CPU Features:
    CPU Clock Ratio ................................ [20x]
    Intel(R) Turbo Boost Tech .................. [Enabled]
    CPU Cores Enabled ............................ [All]
    CPU Multi Threading .......................... [Enabled]
    CPU Enhanced Halt (C1E) ................... [Disabled]
    C3/C6/C7 State Support .................... [Disabled]
    CPU Thermal Monitor ......................... [Enabled]
    CPU EIST Function ............................ [Disabled]
    Virtualization Technology ................... [Enabled]
    Bi-Directional PROCHOT ..................... [Enabled]

    Uncore & QPI Features:
    QPI Link Speed .............................. x36
    Uncore Frequency .......................... 12
    Isonchronous Frequency ..................[Enabled]

    Standard Clock Control:
    Base Clock (BCLK) Control ................ [Enabled]
    BCLK Frequency (MHz) .....................[185]
    PCI Express Frequency (MHz) ........... [Auto] Should I set this to a figure?
    C.I.A.2 [Disabled]
    Advanced Clock Control:
    CPU Clock Drive ..............................[700mV]
    PCI Express Clock Drive ................... [700mV]
    CPU Clock Skew ............................. [0ps]
    IOH Clock Skew ............................. [0ps]

    Advanced DRAM Features:
    Performance Enhance ...................... [Standard]
    System Memory Multiplier (SPD) ........ [AUTO]
    DRAM Timing Selectable (SPD) .......... [AUTO] I was advised to leave this on auto?

    Memory Frequency 1066 1400

    Channel A
    Channel A Timing Settings:
    ##Channel A Standard Timing Control##
    CAS Latency Time ...................... 7 [9]
    tRCD .......................................7 [9]
    tRP .........................................7 [9]
    tRAS .......................................20 [24]

    Ram settings for each channel are the same or slight variation when left on auto. ie; 9,9,9,24.



    Advanced Voltage Control:
    CPU
    Load Line Calibration ................. [Disabled]
    CPU Vcore ...............................1.3
    QPI/VTT Voltage 1.150v ............1.175 [AUTO] As mentioned earlier in the thread I think this needs increasing but not sure how far to go!

    CPU PLL 1.800v .......................1.8 [AUTO]

    MCH/ICH
    PCIE 1.500v ...........................1.5 [AUTO]
    QPI PLL 1.100v .......................1.1 [AUTO]
    IOH Core 1.100v .....................1.1 [AUTO]
    ICH I/O 1.500v .......................1.5 [AUTO]
    ICH Core 1.1v ........................1.1 [AUTO]

    DRAM
    DRAM Voltage 1.500v ..............1.5 [AUTO] Should I change this?
    DRAM Termination 0.750v [AUTO]
    Ch-A Data VRef. 0.750v [AUTO]
    Ch-B Data VRef. 0.750v [AUTO]
    Ch-C Data VRef. 0.750v [AUTO]
    Ch-A Address VRef. 0.750v [AUTO]
    Ch-B Address VRef. 0.750v [AUTO]
    Ch-C Address VRef. 0.750v [AUTO]

  7. #7
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    Default Re: Overclocking UD4P & QPI/VTT question

    What Bios version are you guys running?
    System info: Intel I7 920 // Coolermaster Centurion 590 // Gigabyte GA-EX58 UD4P // Coolermaster V8 // 6g (3x2g) Corsair Dominator 1333 //EVGA GeForce GTX 660 SC 2g // SSD Samsung 840 Pro 256gb //Windows 7 Ultimate 64 bit

  8. #8
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    Default Re: Overclocking UD4P & QPI/VTT question

    Quote Originally Posted by Munch View Post
    What Bios version are you guys running?
    I'm running F7D.

  9. #9
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: Overclocking UD4P & QPI/VTT question

    I see some contradicting info there, so I am kinda confused. If you are leaving memory multi to Auto it looks like maybe 8 is being used so that would be 185x8=1480. And if that is what is being used and you just wrote it wrong then you are using the incorrect uncore Freq as Uncore Freq should be 2x memory multi. Which is why, yes you should set all that yourself.

    Now, I am not sure if your ram will do 1480, but I will put that into these settings below. If you find that is not booting at all I would not be surprised as that is a large jump from the spec of that memory. In that case you would need to use Memory multi of 6, and then use the 12 uncore freq for 1110Mhz ram speed

    And please before you do anything load and apply optimized defaults!!! Starting from Fail safe is not helping you at all as many hidden settings as well as visible ones are set incorrectly. I have had to say this 6 times tonight I think, no offense at all, just wonder why so many people are having issues they start in the wrong spot for sure.

    Please load and apply optimized defaults and set your ram voltage only, then reboot BACK to the BIOS as you will need to set ALL your disk settings again. See here for suggested process of doing this, VERY IMPORTANT if you are using RAID >>
    http://forums.tweaktown.com/f69/bios...h-guide-27576/


    See if this helps ya >>>

    Advanced CPU Features:
    CPU Clock Ratio ................................ [20x]
    Intel(R) Turbo Boost Tech .................. [Enabled]
    CPU Cores Enabled ............................ [All]
    CPU Multi Threading .......................... [Enabled]
    CPU Enhanced Halt (C1E) ................... [Disabled]
    C3/C6/C7 State Support .................... [Disabled]
    CPU Thermal Monitor ......................... [Enabled]
    CPU EIST Function ............................ [Disabled]
    Virtualization Technology ................... [Enabled]
    Bi-Directional PROCHOT ..................... [Enabled]

    Uncore & QPI Features:
    QPI Link Speed .............................. x36
    Uncore Frequency .......................... 12 (if using Memory Multi 6) ~ 16 (if using Memory Multi 8)

    Isonchronous Frequency ..................[Enabled]

    Standard Clock Control:
    Base Clock (BCLK) Control ................ [Enabled]
    BCLK Frequency (MHz) .....................[185]
    PCI Express Frequency (MHz) ........... [Auto] Should I set this to a figure? << Yes, set 100

    C.I.A.2 [Disabled]
    Advanced Clock Control:
    CPU Clock Drive ..............................[800mV]
    PCI Express Clock Drive ................... [900mV]
    CPU Clock Skew ............................. [0ps]
    IOH Clock Skew ............................. [0ps]

    Advanced DRAM Features:
    Performance Enhance ...................... [Standard]
    System Memory Multiplier (SPD) ........ [AUTO] << Disabled
    DRAM Timing Selectable (SPD) .......... [AUTO] I was advised to leave this on auto? << Manual if you want to set your own timings, Suggested

    Memory Frequency 1066 1400

    Channel A
    Channel A Timing Settings:
    ##Channel A Standard Timing Control##
    CAS Latency Time ...................... 7 [9]
    tRCD .......................................7 [9]
    tRP .........................................7 [9]
    tRAS .......................................20 [24]

    Ram settings for each channel are the same or slight variation when left on auto. ie; 9,9,9,24. << ???? They ALL have to match, except Round Trip Latency. But Auto is nothing to trust anyway as values shown are not used in windows 95% of the time anyway



    Advanced Voltage Control:
    CPU
    Load Line Calibration ................. [Disabled]
    CPU Vcore ...............................1.3
    QPI/VTT Voltage 1.150v ............1.175 [AUTO] As mentioned earlier in the thread I think this needs increasing but not sure how far to go! << Set 1.25-1.35 for now, you can lower later. Less 1.2-1.25 is all you would need if you are using the 6 ram multi

    CPU PLL 1.800v .......................1.8 [AUTO] << Set 1.84-1.86

    MCH/ICH
    PCIE 1.500v ...........................1.5 [AUTO]
    QPI PLL 1.100v .......................1.1 [AUTO] << Auto may work, if not try 1.15-1.24
    IOH Core 1.100v .....................1.1 [AUTO] << 1.14-1.124
    ICH I/O 1.500v .......................1.5 [AUTO]
    ICH Core 1.1v ........................1.1 [AUTO] << 1.14-1.18

    DRAM
    DRAM Voltage 1.500v ..............1.5 [AUTO] Should I change this? << Yes, set to your ram spec, normally this is 1.65 So set 1.64 or 1.66

    DRAM Termination 0.750v [AUTO]
    Ch-A Data VRef. 0.750v [AUTO]
    Ch-B Data VRef. 0.750v [AUTO]
    Ch-C Data VRef. 0.750v [AUTO]
    Ch-A Address VRef. 0.750v [AUTO]
    Ch-B Address VRef. 0.750v [AUTO]
    Ch-C Address VRef. 0.750v [AUTO]

  10. #10
    Join Date
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    Default Re: Overclocking UD4P & QPI/VTT question

    Thanks for that.. I think I did incorrectly write the memory multi so I'll check it this evening.

    I have had an issue with the ram from day one as it is showing at 7-7-7-20 and not what the manufacturers specs states (9-9-9-24).. I was advised to leave the timings on auto and that they would be correct even though showing incorrectly in the bios.

    Also, my rams spec is 1.5V, not 1.6 according to the corsair website.

    I'll also do as you suggest and boot optimized defaults.
    Are you saying that I should update my bios? If not, I'm not sure what you mean by setting 'ALL disk settings...' again.

    btw, Im not using raid.

    sorry to be a pain!

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