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Offset Voltage = Higher Voltages?

post #1 of 5
Thread Starter 
Hey guys I seem to be having more issues with my pesky 2600k.

I did a long run with Prime 95 and finally stabilized at 1.335V for 4.5GHz (This time I know for sure)


Now obviously I know these chips can last with that amount of voltage for a long time, but I'm really curious and I would like to get offset voltages working.




So, first things first:


I have PLL Overvoltage Disabled.

CPU Spread Spectrum: Disabled

Load Line Calibration: Ultra High

CPU Offset: -0.020V

Temps never pass 60.

DRAM timings are at stock speeds, C states are set to BIOS defaults.



Now my issue: I can't boot into Windows using -0.030V, I can't do anything in Windows using -0.025V without a BSOD after the first few minutes, and I run somewhat stable using -0.020V.

Now, ***? Prime 95 full load exceeds 1.36V, while on manual mode my CPU only needs 1.335V to keep it rock solid. I am completely stumped as to why I need such high voltages to even BOOT into windows while if I just set my voltage to manual - a 20 second process from stock to overclocked - it only needs 1.335V?


I know that when you put -0.020V it subtracts it to the idle speed, but I thought that was the whole point of LLC so that voltages don't do things like that and it will maximize stability?


Does anyone have any idea as to why this is happening? For now it looks like Manual Voltages are the way to go, unless you wan't to run an extra 0.04V through your chip for absolutely no reason whatsoever.
post #2 of 5
hope this helps
http://www.overclock.net/t/1219588/offset-mode-overclocking-starter-guide-and-thread
    
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i7 4930K Rampage IV Gene SLI Evga GTX 780 Classy 16Gb TeamX2400c9 
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post #3 of 5
Thread Starter 
Quote:

Alright so: Medium LLC, Phase Control: Optimized or Extreme, Duty Control: Extreme.

EDIT:

Alright, everything went alright with 0.005+ but as I suspected it crashed. But it crashed on idle.... it was the obvious 0x0124 BSOD which is low Vcore in my experience.


I'm not sure why it crashed on idle, but I am now at 0.01+ which is getting pretty much exactly the same voltage as it does on the manual overclock using prime 95 (1.336 -1.328 ish)

Will do some general computing first to see if it will crash on idle, then will go play BF3 and do some Prime 95 later on.

Still taking any other suggestions if someone has been watching this thread! smile.gif


Alright here's a log:

+ 0.005 = Crash on Idle
+ 0.010 = Instant BF3 crash
+ 0.020 crash on idle

Not trying any higher, because I'll get into 1.37V which is way too high when I only need 1.335V to keep it stable under manual.
Edited by Millz59 - 4/5/12 at 4:40pm
post #4 of 5
Disable LLC altogether and it shouldn't crash at idle/light load with offset.
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My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Core i7-2600K @ 4.5 GHz w/ 1.4 V Gigabyte GA-P67A-UD3P-B3 MSI GTX 570 Twin Frozr III PE TeamGroup 1333 Mhz CL9 2x4 
Hard DriveOptical DriveOSMonitor
Samsung F3, F1, T166 Samsung Win 7 BenQ 24" 
PowerCase
Sapphire FirePSU 625 W Fractal Design R3 
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Reply
post #5 of 5
Thread Starter 
Quote:
Originally Posted by Alepale View Post

Disable LLC altogether and it shouldn't crash at idle/light load with offset.

Will do!

Seems like you read my mind, as I just got a BSOD while on idle. P95 passed along with IBT at +0.020, just a bsod on idle...

Edit:

Regular LLC (0%) = instant Bsod on p95

Ultra High LLC = 1.37V (way to high)

Back to square one right now, I am completely stumped.

EDIT EDIT:

seriously this is so inconsistent it's not even funny.

Went back to stock setting's and just bumped voltage by an extra 0.005. Will do more general computing to see whether it will bsod on me or not. Let's hope this is it.

(by stock settings i mean the above ones I used before, not CPU default.)

Anyone else?
Edited by Millz59 - 4/5/12 at 4:48pm
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