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Max safe voltages?

post #1 of 5
Thread Starter 
I'm trying to get my board stable at some higher speeds. Fairly certain is it the board, as the ram is stable, and I highly doubt I need to increase by .13v on a 45nm chip to increase 10mhz fsb x 9 multi.

Anyway, on the 650i/750i boards, what are safe max HT/NB voltages? And is the SB voltage make a lick of difference for my OC?
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Foldatron
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post #2 of 5
Vcore max is 1.365v. Most 8400's hit 4g below 1.35vc.
Raise the vcore to 1.25vc and the fsb should be stable for a ways.
Notch up the HT/NB only a notch and keep testing.
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post #3 of 5
Thread Starter 
Raise it up a notch from what? The BIOS defaults it to 'auto', so I have no idea what stock voltages are, or what it's max values are.
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post #4 of 5
I'm not familiar with the P5N mobo bios, but my bet that default setting could not be lowered and would probably have positive increments over default. Usually the adjustments will be +1, +2, etc...
Only one way to find out. Disable auto and enable manual and scope it out.
You can always put it back to auto if confused.
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post #5 of 5
Thread Starter 
I've been going manual. There are no settings that let you set offset amounts.

What you get in manual, with something like NB voltage is:
[auto]
1.2v
1.21v
1.22v
....
1.8v

So 1.8v is the board's max, but the max 650i NB voltage should be virtually identical for all boards, just as 1.36v is the max for all e8400's.
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750W PC P&C Silencer CoolerMaster 690 
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Mouse
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i7-2600K AMD 6970M 1GB 16GB PC3-10600 DDR3 1TB 7200rpm 
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Foldatron
(17 items)
 
Mat
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Work iMac
(9 items)
 
CPUMotherboardGraphicsGraphics
i7 950 EVGA x58 3-way SLI EVGA GTX 660ti GTX 275 
RAMHard DriveHard DriveHard Drive
3x2GB Corsair Dominator DDR3-1600 80GB Intel X25-M SSD 2TB WD Black 150GB WD Raptor 
Hard DriveOSMonitorKeyboard
2x 150GB WD V-raptor in RAID0 Win7 Home 64-bit OEM 55" LED 120hz 1080p Vizio MS Natural Ergonomic Keyboard 4000 
PowerCase
750W PC P&C Silencer CoolerMaster 690 
CPUGraphicsRAMHard Drive
Intel Core i5 2500S AMD 6770M 8GB (2x4GB) at 1333Mhz 1TB, 7200 rpm 
Optical DriveOSMonitorKeyboard
LG 8X Dual-Layer "SuperDrive" OS X Lion 27" iMac screen Mac wireless keyboard 
Mouse
Mac wireless mouse 
CPUGraphicsRAMHard Drive
i7-2600K AMD 6970M 1GB 16GB PC3-10600 DDR3 1TB 7200rpm 
Hard DriveOptical DriveOSMonitor
256GB SSD 8x DL "SuperDrive" OS X 10.7 Lion 27" 2560x1440 iMac display 
Monitor
27" Apple thunderbolt display 
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