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Please help with overclocking my i7 950 - Page 2

post #11 of 13
Hi mate

I dont know about your board but some mobos have there own OC software. If yours does there is a very simple easy trick to get the right difference between Vcore and QPI/Dram. Load up the OC soft reset to defaults, and take notice of the Vcore volts and then subtract the QPI volts, which might give you like 0.05v is what my board loves.

If you dont have OC soft, keep lowering QPI voltage until you get a bsod when testing for stability, and that message will more then likely be 0x124. Once this happens you reached a max threshold, and just need to increase QPI a notch. Then just subtract the 2, then even if doing a suicide run, the higher you get it becomes so super sensitive that if you dont keep that difference it will crash(but with that said there are a few other factors that alter that threshold but i'll just keep it simple)


If you get a bsod it is the best thing in the world, it is when you dont get them is when you'll rip out your hair
0x101 = increase vcore
0x124 = increase/decrease vcore or QPI/VTT...have to test to see which one it is
0x0A = unstable RAM/IMC, increase QPI first, if that doesn't work increase vcore
0x1A = Memory management error. It usually means a bad stick of Ram. Test with Memtest or whatever you prefer. Try raising your Ram voltage
0x1E = increase vcore, or lower RAM frequency/ increase RAM voltage
0x3B = increase vcore, or lower RAM frequency/ increase RAM voltage
0x3D = increase vcore
0xD1 = QPI/VTT, increase/decrease as necessary
0x9C = QPI/VTT most likely, but increasing vcore has helped in some instances
0x50 = RAM timings/Frequency or uncore multi unstable, increase RAM voltage or adjust QPI/VTT, or lower uncore if you're higher than 2x
0x116 = Low IOH (NB) voltage, GPU issue (most common when running multi-GPU/overclocking GPU)
0x00000109 = Not enough or too Much memory voltage
0x7E = Corrupted OS file, possibly from overclocking. Run sfc /scannow and chkdsk /r
0x24 = Disk corruption (Did you OC the PCI-E bus?)

If what i explained don't make sense maybe this might
http://www.overclock.net/intel-cpus/...ifference.html

Once they are in harmony things will be much easier for you to smooth out
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Slug
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 950 Asus Rampage III Extreme GTX 460 2GB Golden Sample - SLI G.Skill 12GB DDR3-1600 
Hard DriveOptical DriveOSMonitor
5 x 1tb Samsung HD103SJ Cheap TrueDirect burner Windows 7 Ultimate x64 Aquos 32" Wide Screen TV 
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Logitech Corsair AX1200 Gold Thermaltake Armor+ VH6000BWS Razor Naga 
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Peice of plastic 
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post #12 of 13
23 is a lot harder to get stable than 21.

try 21 x 191 .. ~1.23v .. it is the most common setup for a solid 4.0.
stable again
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stable again
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2x Apogee HD  2x RX 480 2x MCP 655 RP-452x2 rev2 (new) 
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post #13 of 13
Thread Starter 
Ok so after a LOT and I mean a LOT of testing here are my results. I tried the 23x multiplier as well as the 21 and it could not pass OCCT's testing without extreme voltages that I was not comfortable with. Finally 100% stable at 4.0ghz. Thanks again so much for all of the support and help! Hopefully this information will help someone else.

CPU-Z Validation : http://valid.canardpc.com/show_oc.php?id=1954153

4034mhz [CPU] / 1698mhz [RAM]. Here are my bios settings:

CPU VCore 1.2875
CPU VTT Voltage +300mV (Lowered from +350mV that was used during testing works fine)

CPU PLL VCore [Auto] 1.8v
IOH PLL VCore [Auto] 1.8v
QPI PLL VCore 1.35v
Dimm Voltage 1.63v
Dimm DQ Vref +0mV
IOH Vcore 1.2v
IOH/ICH I/O Volt [Auto] 1.5v
ICH Vore [Auto] 1.200

CPU Clock Ratio 19x
CPU Host Freq 212

IntelSpeedstep / Turo Mode [Disabled]
CxE Function [Disabled]
HT Technology [Enabled]

Mem Freq 2:8/1067Mhz
tCL 9
tRCD 10
tRP 9
tRAS 27
tRFC 74
Command Rate 1t

After Testing My Temps Idle and Load:


My temps now idle after reducing Vcore:


Additional info from E-Leet aka CPUID:










Here are the screenshots of the results from OCCT:



CPU RESULTS:









V-Core:



Voltages:







As always if you have any additional recommendations please let me know all feedback is appreciated. Thanks again!
Edited by zerobahamut - 8/15/11 at 1:02pm
 
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HTPC
(10 items)
 
 
CPUMotherboardGraphicsRAM
i7 950 (OC'd to 4.02ghz) EVGA x58 Classified 3 (2x) EVGA GTX 670 4GB Superclocked in SLI Corsair Dominator GT 12GB DDR3 2000MHz 
Hard DriveOptical DriveOSMonitor
Crucial C300 256GB SSD / WD Caviar Black 1TB / ... Samsung Blu-Ray burner Windows 7 Ultimate 64 bit (3x) ASUS VG236HE w/ XFX Tri-Stand & amBX Lights 
KeyboardPowerCaseMouse
Logitech g510 Corsair AX 1200W Corsair Obsidian 800D Razer Deathadder 
Mouse PadAudioAudio
Razer Vespula Titanium HD  Bowers & Wilkins 686 (Pair) 
CPUMotherboardGraphicsRAM
AMD A6-3500 Llano 2.1GHz   ASRock A75M FM1 AMD A75 ASUS ENGT430 G.SKILL 4GB 240-Pin DDR3 SDRAM DDR3 160 
Hard DriveHard DriveOptical DriveOS
(4) HITACHI Deskstar 0S03230 3TB 5400 RPM   Crucial M4 64GB  SAMSUNG Black Blu-ray Combo SATA Model SH-B123L Microsoft Windows 7 Home Premium  
PowerCase
OCZ ModXStream Pro 600W  Moneual Black Aluminum MonCaso 320B  
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