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Trouble getting 2600k stable at 4.5

post #1 of 4
Thread Starter 
I finished building my sig rig tuesday. Last night was my first attempt at overclocking (ever, not just this comp). I can't seem to get a stable build at 4.5. I tried 4.5 at 1.325v and kept going up by .005v. Seemed stable at 1.360v, passed 3 hours of Prime95. However my first 20 minutes playing BF3 and BSOD. Was really aiming for 4.5. I have a couple questions that can hopefully be answered .

My current changes in bios settings (lowered multi to see if stable):
CPU Clock Ratio: 43x
Internal CPU PLL Overvoltage: Enabled
Multi-Steps Load-Line: Level 5
CPU VCore: 1.350

1. My memory is rated at 1.65v, would changing my DRAM Voltage to 1.65 instead of default 1.500 help? This would be my only tweak to memory as I was trying to isolate the CPU.
2. Would it be worth pushing VCore to 1.37-1.38? This seems high for this OC from what I've read. I hit 75 C max on load with Prime95 with 1.360v.
3. Is there a setting I missed that might be contributing to the instability?

Thanks in advance!

Edit: I forgot to mention. From my understanding Core Voltage in CPU-Z should be around the VCore. However I usually see mine at 1.044v, 1.056v during Prime95. Am I missing something here?


Edited by TiFFman - 10/28/11 at 3:06pm
The Void
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i7 2600k @ 4.5 GIGABYTE G1.SNIPER2 Nvidia GTX 780 G.SKILL Ripjaws X 16GB 
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The Void
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i7 2600k @ 4.5 GIGABYTE G1.SNIPER2 Nvidia GTX 780 G.SKILL Ripjaws X 16GB 
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Crucial M4 128gb SSD, 2TB Seagate Barracuda Windows 7 64-bit 3 x 27" Samsung @ 5760x1080 Logitech G510 
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post #2 of 4
There seems to be a problem with your Mobo saving your voltage settings. When you load with Prime95, you should see your multiplier speed (which you do) at the set voltage (which you don't).
post #3 of 4
This may be bad advice since I'm not exactly sure how the setting works but have you tried it with the Multi-Steps Load Line disabled? I'm pretty sure that affects voltage under load, it could be acting wonky.

What's the default setting for it? For reference I have all my settings on default/auto except vcore and multi.


Edit- Also, unless you really need it, drop down to 8GB ram and try to get it stable.
post #4 of 4
Thread Starter 
It was defaulted to Disabled. With that off I didn't even get past the windows logo before BSOD :/. I had looked at a guide for that mobo and 2600k and they recommended so I tried level 5 and it's worked so far.
The Void
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CPUMotherboardGraphicsRAM
i7 2600k @ 4.5 GIGABYTE G1.SNIPER2 Nvidia GTX 780 G.SKILL Ripjaws X 16GB 
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Crucial M4 128gb SSD, 2TB Seagate Barracuda Windows 7 64-bit 3 x 27" Samsung @ 5760x1080 Logitech G510 
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SeaSonic X-SERIES 1050W  Haf X Logitech MX518 
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The Void
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CPUMotherboardGraphicsRAM
i7 2600k @ 4.5 GIGABYTE G1.SNIPER2 Nvidia GTX 780 G.SKILL Ripjaws X 16GB 
Hard DriveOSMonitorKeyboard
Crucial M4 128gb SSD, 2TB Seagate Barracuda Windows 7 64-bit 3 x 27" Samsung @ 5760x1080 Logitech G510 
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SeaSonic X-SERIES 1050W  Haf X Logitech MX518 
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