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Almost there 4.5Ghz on i7 950

post #1 of 3
Thread Starter 
Hi guys, last week I returned to my 4.5Ghz overclock, I thought it was stable but re-testing I saw Linx throw me a rounding error with positive power on the 18th loop after 1h 10minutes.

Current settings:

LOAD LINE CALLIBRATION -ENABLED
CPU VCORE 1.43125
QPI/VTT 1.415
CPU PLL 1.4v (lowered that as suggested)
PCIE Normal
QPI PLL Normal
IOH CORE NORMAL
DRAM VOLTAGE 1.66v

CPU CLOCK RATIO x23 BCLK 196
INTEL TURBO BOOST DISABLED
C1E,C3,C6,C7,EIST DISABLED

PERFORMANCE ENHANCE EXTREME (trying Normal now UPDATE:I got 0x00050 BSOD in 5 minutes)

CPU CLOCK DRIVE 800mV
PCIE CLOCK DRIVE 900mv
QPI CLOCK x36
UNCORE x17


At this point it does seem like a memory problem, These modules should be able to wistand 7-7-7 1600Mhz with 1.65v voltage, memory is running at 1580Mhz now, maybe not enought IOH voltage?
    
CPUMotherboardGraphicsRAM
Intel Core i7 950 Gigabyte X58 Extreme (WC chipset, No Silent Pipe)) AMD/ATI RADEON 5970 OC vBIOS 1.26 3x2Gb OCZ Platinum PC 12800 7-7-7@1.65v 
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CPUMotherboardGraphicsRAM
Intel Core i7 950 Gigabyte X58 Extreme (WC chipset, No Silent Pipe)) AMD/ATI RADEON 5970 OC vBIOS 1.26 3x2Gb OCZ Platinum PC 12800 7-7-7@1.65v 
Hard DriveOptical DriveOSMonitor
2xIntel x-25M GEN2 160 GB SSD RAID 0,4x1TB RAID5 LG Blue Ray RW Windows 7 Ultimate x64 Samsung 22" T220HD 1680x1050p 
KeyboardPowerCaseMouse
Logitech Wireless Keyboard Enermax Evolution 85+ Lian-li V2000B (Modded by Little Devil) Logitech Wireless Mouse 
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SteelPad 4D 
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post #2 of 3
Increase CPU PLL back to 1.8v. I've found that lowering it too much can cause more instability.

Usually BSOD 50 is linked to CPU voltage. You probably need 1.45v or more.
post #3 of 3
Thread Starter 
Thx for advice SimpleTech.

I'm using single stage phase and my CPU cores never exceed 20ºC, I've heard that under those temps its is good to lower CPU PLL voltages, but will try leaving it at 1.8v.
    
CPUMotherboardGraphicsRAM
Intel Core i7 950 Gigabyte X58 Extreme (WC chipset, No Silent Pipe)) AMD/ATI RADEON 5970 OC vBIOS 1.26 3x2Gb OCZ Platinum PC 12800 7-7-7@1.65v 
Hard DriveOptical DriveOSMonitor
2xIntel x-25M GEN2 160 GB SSD RAID 0,4x1TB RAID5 LG Blue Ray RW Windows 7 Ultimate x64 Samsung 22" T220HD 1680x1050p 
KeyboardPowerCaseMouse
Logitech Wireless Keyboard Enermax Evolution 85+ Lian-li V2000B (Modded by Little Devil) Logitech Wireless Mouse 
Mouse Pad
SteelPad 4D 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
Intel Core i7 950 Gigabyte X58 Extreme (WC chipset, No Silent Pipe)) AMD/ATI RADEON 5970 OC vBIOS 1.26 3x2Gb OCZ Platinum PC 12800 7-7-7@1.65v 
Hard DriveOptical DriveOSMonitor
2xIntel x-25M GEN2 160 GB SSD RAID 0,4x1TB RAID5 LG Blue Ray RW Windows 7 Ultimate x64 Samsung 22" T220HD 1680x1050p 
KeyboardPowerCaseMouse
Logitech Wireless Keyboard Enermax Evolution 85+ Lian-li V2000B (Modded by Little Devil) Logitech Wireless Mouse 
Mouse Pad
SteelPad 4D 
  hide details  
Reply
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