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Trying to get 4.6Ghz stable

post #1 of 11
Thread Starter 
So, I picked up my 2600k yesterday, and so far I love it

I'm trying to hit 4.6Ghz, but it seems like I'm missing something Voltage wise

Here are my current settings

Multi-Steps Load-Line -- Disabled
CPU Vcore -- 1.380 (increasing to 1.4)
QPI/VTT Voltage -- 1.100
System Agent Voltge -- 1.00V
CPU PLL -- 1.850


I know that increasing the core voltage is the start, but what about the others
It's been a while since I overclocked an i7/15
post #2 of 11
People sometimes are more stable with a lower PLL. Try putting it at 1.7.
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post #3 of 11
Max recommended PLL is 1.8.

To get stable you'll need to set LLC (Multi-Step Load Line). Somewhere between 50%-75%, you'll have to experiment.
post #4 of 11
Drop pll voltage and set system agent voltage back to auto. DO NOT TOUCH SYSTEM AGENT VOLTAGE. 1.0v is too high for vccsa (system agent)

As for LLC, set to level 5 or 6, you will need to watch your voltage under load to see which one doesn't drop too low.

Stay at 1.38v, use LLC 5 or 6, stress test. If it fails, raise vcore by the smallest amount your board allows. Going from 1.38 to 1.4v is too big of a jump.

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Edited by SMK - 10/22/11 at 8:59am
    
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post #5 of 11
Quote:
Originally Posted by SMK View Post
Drop pll voltage and set system agent voltage back to auto. DO NOT TOUCH SYSTEM AGENT VOLTAGE. 1.0v is too high for vccsa (system agent)

As for LLC, set to level 5 or 6, you will need to watch your voltage under load to see which one doesn't drop too low.

Sent from my AT&T Samsung Galaxy S2 using Tapatalk.
Why no upping the vccsa (vccio/system agent)? It has been proven to improve RAM OC stability, especially when running 4 modules. Any documentation to suggest 1.0v is too high? I thought 1.2v was max recommended?
post #6 of 11
Thread Starter 
Thanks guys, After setting the Load-Line I am hitting 4.7Ghz stable so far

Now the weird thing

CPUZ seems to not want to change the cpu voltage when I have it up

it's stuck at 1.116V, doesn't change, even if I do change the voltage
post #7 of 11
Quote:
Originally Posted by Dapman02 View Post
Thanks guys, After setting the Load-Line I am hitting 4.7Ghz stable so far

Now the weird thing

CPUZ seems to not want to change the cpu voltage when I have it up

it's stuck at 1.116V, doesn't change, even if I do change the voltage
Got the latest version? Try using another program, HW Monitor?
post #8 of 11
Thread Starter 
Quote:
Originally Posted by hirolla888 View Post
Got the latest version? Try using another program, HW Monitor?
Yea, it is the most recent version
shows 1.14V n hwmonitor
post #9 of 11
Quote:
Originally Posted by hirolla888 View Post
Why no upping the vccsa (vccio/system agent)? It has been proven to improve RAM OC stability, especially when running 4 modules. Any documentation to suggest 1.0v is too high? I thought 1.2v was max recommended?
Vccio and vccsa are two different voltages. Higher than 0.95v on vccsa (system agent) and the risk of damage is high. Vccio (qpi/vtt) is what can go up to 1.2, and actually more around 1.25v max. Vccio or vtt, is what affects ram.

Again, two different voltages, only play with vccio, don't touch vccsa.

from a sandy bridge guide on these forums:

"VCCSA: More commonly known as System Agent Voltage. Intels maximum System Agent Voltage (Vccsa) is 0.971v and minimum is 0.879v. Stock is 0.925v. System Agent Voltage should NOT be touched, it is supposed to be a fixed voltage, and it powers many things that the VCC does not power. One of the most important is the Power Control Unit (PCU) which controls internal power allocation of the processor. This voltage is to be generated by a separate VRM than used for SVID"

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Edited by SMK - 10/22/11 at 11:32am
    
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post #10 of 11
Thread Starter 
So my temps are (in a 72-73 degree room)
74 80 83 81

I assume I probably want to avoid going much higher than that
but should thos temps be ok

btw 4.7Ghz is running rock solid right now
still running p95 to check

also, I currently have my load line at 6, could lowering it down to 5 help bring temps down a bit
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