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Cannot overclock i7 920 D0

post #1 of 27
Thread Starter 
Hi,

Long time reader here but this is my first post as this time I am against a wall.
I never overclocked before in my life, however I wanted to get my i7 920 D0 to 4GHz so last saturday I started overclocking my CPU. However I got nowhere.

I read this guide, however I could not do it. I am actually beginning to think there is something wrong with my hardware.

My components are the following:
i7 920 D0
Gigabyte EX58-UD5
6GB Corsair Dominator C8 1600MHz (and I think here lies my problem)



These are the settings I am running at the moment:

Advanced CPU Features:
CPU Clock Ratio ................................ [21x]
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 .............................. [Auto]
Uncore Frequency .......................... [Auto]
Isonchronous Frequency ..................[Enabled]


Standard Clock Control:
Base Clock (BCLK) Control ................ [Enabled]
BCLK Frequency (MHz) .....................191
PCI Express Frequency (MHz) ........... [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 ...................... [Turbo]
Extreme Memory Profile (X.M.P) ......... [Disabled]
System Memory Multiplier (SPD) ........ [6.0]
DRAM Timing Selectable (SPD) .......... [Auto]

Channel A + B + C

Channel A Timing Settings:
##Channel A Standard Timing Control##
CAS Latency Time ......................8
tRCD .......................................8
tRP .........................................8
tRAS .......................................20


##Channel A Advanced Timing Control##
tRC ........................................ [Auto]
tRRD ....................................... [Auto]
tWTR ...................................... [Auto]
tWR ........................................ [Auto]
tWTP ....................................... [Auto]
tWL ........................................ [Auto]
tRFC ....................................... [Auto]
tRTP ....................................... [Auto]
tFAW ...................................... [Auto]

Command Rate (CMD) ................ [auto]

##Channel A Misc Timing Control##
Round Trip Latency ...................
B2B CAS Delay ..........................


Advanced Voltage Control:

CPU
Load Line Calibration ................. [Enabled]
Dynamic Vcore (DVID) ............... [Auto]
CPU Vcore ............................... 1.27500v
QPI/VTT Voltage 1.150v ............1.340v
CPU PLL 1.800v ....................... [Auto]

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

DRAM
DRAM Voltage 1.500v .............. 1.640v
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]



Now in order to test I am using Prime95 mainly but someone suggested I use LinX too and I am using CoreTemp and Real Temp to monitor temps and CPU-Z as well.

The above setup ran stable on prime95 blend for 18.5 hours (although one core stopped working after 16.5 hours, but a notch more Vcore should do the trick). However when I tried LinX with all memory and 20 counts it failed on the 2nd count immediately.

Also, I want to run the Memory multiplier at 8.0 not 6.0 to get the full performance of my RAM however I haven't been able to stay on desktop for more than 10 seconds, the PC just freezes.

I tried to get the Vcore up to 1.35, the QPI up to 1.38, the Dram up to 1.68, IOH and ICH up to 1.2, etc... Mind you I don't actually know what these mean/do, but I read on forums that it helps and tried the suggested settings.

I am really lost and really don't know what to try anymore... with memory multiplier at 6.0 prime seems to be stable but LinX fails immediately and with memory multiplier at 8.0 I can't stay on the desktop for more than 10 seconds

Any help please?

Thanks
post #2 of 27
Couple things wrong with your settings just by looking at them, - you should turn off Turbo Boost, and you'll probably need a bit more vcore as you stated. Try loosening your RAM timings (going with 9 9 9 24) and seeing if that helps.
The Laptop
(6 items)
 
  
CPUGraphicsRAMHard Drive
Intel i7 2860QM AMD Radeon HD 6770M Corsair Vengence 1600MHz Samsung 840 Pro 256GB 
OSMonitor
Mac OS X 10.8 1680 x 1050 anti-glare high resolution  
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The Laptop
(6 items)
 
  
CPUGraphicsRAMHard Drive
Intel i7 2860QM AMD Radeon HD 6770M Corsair Vengence 1600MHz Samsung 840 Pro 256GB 
OSMonitor
Mac OS X 10.8 1680 x 1050 anti-glare high resolution  
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post #3 of 27
Thread Starter 
without turbo boost I would not have 21x multiplier though no?

Also why would the ram timings need to be loosened since they are stated to ran 8-8-8-20 at 1600MHz?

Thanks
post #4 of 27
Turbo Boast isn't needed for 21X all the time,

as for the Ram loosening, Its just to make sure the Ram isn't causing the lack of overclock, you could even lower the speed of it to [Lowest it will go] to make sure of no ram issues. You basically turn it up after your CPU is stable.

CPU Vcore could be higher as well..
Gaming Rig
(14 items)
 
  
CPUMotherboardGraphicsRAM
Intel i7 920 D0 Asus Rampage iii Extreme ATI Gigabyte HD 5870 12GB Mushkin Redline DDR3 1600 
Hard DriveOptical DriveOSMonitor
Spinpoint F3 1TB LG R+-DL W/ Lightscribe Windows 7 Premium 64BIT BENQ XL2410T 120hz 
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Mionix Zibal 60 Corsair 1000HX HAF 932 Mionix Naos 5000 
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Gaming Rig
(14 items)
 
  
CPUMotherboardGraphicsRAM
Intel i7 920 D0 Asus Rampage iii Extreme ATI Gigabyte HD 5870 12GB Mushkin Redline DDR3 1600 
Hard DriveOptical DriveOSMonitor
Spinpoint F3 1TB LG R+-DL W/ Lightscribe Windows 7 Premium 64BIT BENQ XL2410T 120hz 
KeyboardPowerCaseMouse
Mionix Zibal 60 Corsair 1000HX HAF 932 Mionix Naos 5000 
Mouse PadAudio
Razer Goliathus Speed Edition Sennheiser PC 350 
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post #5 of 27
Turn off Turbo Boost. 22x is too much.

Have you changed your CPU PLL at all?
post #6 of 27
I know you are looking more for answers than a "here read this" post, but check out the guide in my sig. It helped me a ton with my old 920
post #7 of 27
Thread Starter 
@hardcore - I ran it at the lowest setting which is 6.0 multiplier and it was stable for 18.5 hours on prime95 blend but stopped after two counts in LinX

@kiwiasian - It never went to 22x with turbo boost enabled. CPU-Z reported 21x and if I disable it from the bios than I cannot choose 21x multiplier anymore. That's the only reason I left it enabled. And CPU PLL I tried setting it to 1.88 but no joy.

@tats - Will take a look at your guide.

I guess what I am asking is can someone with a similar setup to mine fill out the template with some things that I can try next? I know one hardware is different from another but it would help as then only small tweaks should be needed.

Thanks
post #8 of 27
Thread Starter 
tats... very good guide... well done...

Well I have my RAM to 6.0 so lowest and after taking a break I decided to run LinX again... QPI is 1.34V and Vcore is 1.275 or 1.3V (can't remember exactly sorry)... but this time LinX has been running stable for 40 mins and already did 12 counts out of 20. If it finishes then these settings are classified as stable right? Or should I lower my QPI?

TBH the only problem I was having is to get the memory to run at 8.0 as CPU stability was confirmed by 18.5 hours of prime95 correct?

Appreciate your help
post #9 of 27
You should be able to lower the QPI/VTT voltage, that's quite a lot for 1333mhz memory speed but it really depends on the IMC of your cpu, it would have to be pretty bad if it actually needs that much.
    
CPUMotherboardGraphicsRAM
i7 990x/3930k/3770k/4770k GB x58a-OC/Asus RIVE/x79 gd65/z77 mpower/z77 MV... gtx480s/gtx580s/7970s/680s/Titan Hyper/PSC/BBSE/Hynix/Samsung 
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samsung 2320 Razer Lycosa ax1200 carboard box 
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CPUMotherboardGraphicsRAM
i7 990x/3930k/3770k/4770k GB x58a-OC/Asus RIVE/x79 gd65/z77 mpower/z77 MV... gtx480s/gtx580s/7970s/680s/Titan Hyper/PSC/BBSE/Hynix/Samsung 
Hard DriveOptical DriveCoolingOS
HDDs/SSDs DVD Air/water/phase/copper pot Windowz 
MonitorKeyboardPowerCase
samsung 2320 Razer Lycosa ax1200 carboard box 
Mouse
Trackball 
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post #10 of 27
Thread Starter 
ok so next step is get the qpi down to say 1.25V and leave the Vcore as it is now?
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