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Overclock is stable, but I have some questions

post #1 of 3
Thread Starter 
Hey everyone,

I've been running my i7 920 at a stable 3.4GHz at 1.20 volts in the BIOS for a few months now, but I'm looking to push it a bit further. I do, however, have a few questions before I attempt it.

What is a safe voltage to have my i7 920 at for 24/7 use?
I plan on pushing it to atleast 1GHz over stock, but am worried about the longevity of the chip - as I do plan on using it in a back-up rig in the future.
My cooler is a beast, so temperature isn't an issue. I'm just worried about voltage killing the chip prematurely.

Which of these settings should I enable in my BIOS after I have a stable OC?
Load-Line Calibration
C1E Support
Intel Virtualization Tech
CPU TM Function
A20M
Intel Speedstep Tech
Intel C-State Tech

Does increasing the RAM multiplier effect stability? I currently have mine at 8x which has my RAM running at 1304MHz. I'm debating whether or not to push it to x10 so it will run above rated specs.
On a similar note, are tighter timings better than a higher clock? Does changing the timings other than the "main four" have any effect?
Edited by VanillaCena - 5/15/11 at 10:45pm
post #2 of 3
For 24/7 use I wouldn't really go over 1.45v. Maybe 1.5v. Anything higher than that is going to significantly decrease your processor's life. However, you're probably going to be upgrading within a few years anyway so 'safe voltages' are debatable.

Keep all of those BIOS features disabled.

Not sure about timings outside the "main four", loosening timings usually leads to higher memory clocks thus higher CPU clocks - tightening them is what you do when you've already reached a stable CPU clock.
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CPUMotherboardGraphicsRAM
i5 750 Lynnfield @ 4.4 GHz, 1.41v EVGA P55 SLi (132-LF-E655-KR) - A72 BIOS EVGA GeForce GTX 680 4GB G.Skill Ripjaws @ 9-9-9-24, 1.51V 
Hard DriveOptical DriveOSMonitor
80GB Intel X25-M SSD + 500GB WD + 2TB Samsung F3 Samsung Super Writemaster DVD+-R Windows 7 Ultimate Edition Samsung SyncMaster 2433 24" 
KeyboardPowerCaseMouse
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Project 4
(13 items)
 
  
CPUMotherboardGraphicsRAM
i5 750 Lynnfield @ 4.4 GHz, 1.41v EVGA P55 SLi (132-LF-E655-KR) - A72 BIOS EVGA GeForce GTX 680 4GB G.Skill Ripjaws @ 9-9-9-24, 1.51V 
Hard DriveOptical DriveOSMonitor
80GB Intel X25-M SSD + 500GB WD + 2TB Samsung F3 Samsung Super Writemaster DVD+-R Windows 7 Ultimate Edition Samsung SyncMaster 2433 24" 
KeyboardPowerCaseMouse
Logitech G15 Corsair TX750 750W Corsair Obsidian 800D + Scythe Kaze Master Ace Razer Deathadder Respawn - Black 
Mouse Pad
Steelseries QcK Medium - Black 
  hide details  
Reply
post #3 of 3
Thread Starter 
Quote:
Originally Posted by jNSK View Post
For 24/7 use I wouldn't really go over 1.45v. Maybe 1.5v. Anything higher than that is going to significantly decrease your processor's life. However, you're probably going to be upgrading within a few years anyway so 'safe voltages' are debatable.

Keep all of those BIOS features disabled.

Not sure about timings outside the "main four", loosening timings usually leads to higher memory clocks thus higher CPU clocks - tightening them is what you do when you've already reached a stable CPU clock.
Thanks for your input jNSK.
Anyone else care to chime in? The more information, the better!
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