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Sandybridge 15 2500k - have I hit the wall

Well I have had a good week or so gathering wisdom from the members.. thank you.
My question is I am successfully oc'ing up to 4.3GHZ with the 2500k on an asrock extreme 4 Mobo
i can boot to windows at this setting.. but cannot boot to windows on 44x multiplier.. I get a screen which says no go on the boot laddy.. lets check ur hard ware or restore.

Now of course i got through that at 4.3 on the next reboot then used asrock windows utility (the one you can get to after windows has loaded) to try and run at 44x. The com did not crash, but when I put OCCT vers 3.0.0 on it to test.. it work for a short time i.e sub 2 mins and flashed up it found an error in core #3. I thought bullshit, your not gonna do this to me so I re ran the test.. same message from OCCT except now it found an error in core #2.

I am happy to confess I did not build this com - that might be important, I note when I hold down F2 to go to bias I can not find a place to alter my vcore voltage.. which seems to be set at +1.20. The importance of this is that at 43x the vcore fluctates beteen 1,97 and 1.206. The question arises in my mind is it possible that in trying to boot at 44x i instantly require more than the allowed 1.2 vcore voltage and consequently am being reamed by a lower level BIoS set up.. you know, the kind a friendly com builder sticks in there to stop his customers crankin the heck out of the equipment.

Question.. could the core error be caused by lck of voltage and if so how do I fix, or do I have to suck it up and concede I have hit the "Wall".

Kindest regards
Lex
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  1. Best answer
    Quote:
    I note when I hold down F2 to go to bias I can not find a place to alter my vcore voltage.. which seems to be set at +1.20. The importance of this is that at 43x the vcore fluctates beteen 1,97 and 1.206.


    Then your voltage is set on auto, you'll need to change that auto setting to fixed or offset to be able to manually set it.

    Quote:
    Question.. could the core error be caused by lck of voltage


    That would be?????? YES!

    No Offense but the only wall you've hit, is the lack of overclocking knowledge wall, and basic BIOS maneuvering and setup.
  2. 4Ryan6 said:
    Quote:
    I note when I hold down F2 to go to bias I can not find a place to alter my vcore voltage.. which seems to be set at +1.20. The importance of this is that at 43x the vcore fluctates beteen 1,97 and 1.206.


    Then your voltage is set on auto, you'll need to change that auto setting to fixed or offset to be able to manually set it.

    Quote:
    Question.. could the core error be caused by lck of voltage


    That would be?????? YES!

    No Offense but the only wall you've hit, is the lack of overclocking knowledge wall, and basic BIOS maneuvering and setup.



    No Offense Taken, I came seeking wisdom and I am going to apply it. Thank you for the tip, I will now go break down my personal wall..lol.

    Ps If you ever need a defense attorney :)

    I will check back in with results
  3. well, thanx for the tip. I found the OC for dummies presets in the bios.

    Best I can do atm (out of caution) is:

    4.6Ghz, VCore 1.414, Peak CPU Temp 89C, MB Temp 29, Room Temp 10C.

    Still it is a good start for a noob.

    What I did notice on the way through because i was keeping score was the big Jump Between 4300MhZ and 4400 Mhz; I record the vcores for each step from 4000Mhz up wards:

    4000..........Vcore 1.194
    4100....................1.197
    4200....................1.190 yes a drop.. musta been a sweet spot dunno
    4300....................1.206
    4400.............................Fail...bleat to the community... Get advice from ryan
    Go to bios change to Fixed volt approach.. assess past vcore numbers guess that Vcore of 1.250 should cut it... Screen freeze...poke buttons till it switches of and then boot back into Bios..... look Harder in Bios..FIND OC FOR DUMMIES BUTTON Called Turbo Presets Optimizer......Dial in 4400.

    4400.............Vcore 1.351 ( Seems a leap of .147 volts to get the extra 100Mhz )
    4600.......................1.414

    All these figures were what it took to get the CPU through an OCCT 1hour load test.

    It may help someone else; as for me I am going to think about what I have learned and start working out how to chisel down my Vcore draw. Best thing of the night, I have not got a dud chip...and I can sort my head with a bit more thought and study. Thanks especially to 4Ryan6..like ur sense of humour.

    Cheers Lex
  4. Until you get a better cooler, you had better back that overclock down to 4.3GHz or so. You should keep the peak Prime95/OCCT core temps below 75ºC.
  5. Personally I'd just keep it at 4.3 ghz with good temps and low voltages. You aren't going to notice the diff between that and 4.6 anyways...
  6. Thnak you guys.. i slept on thatovernight.. and I agree I am backing down to 4.3 untill i get a better cooler.
  7. Best answer selected by Lex_Sinistre.
  8. Gave ryan the best answer cos he kicked my ass till i used my brain.. and cos of it I found 4600Mhz. But Leaps for shadows and Bear Claw thank you both for the sensible input on prime/OCCT max temps and the advice to settle at 4300Mhz for now.

    cheers
    Lex
  9. Y'know, I've had very similar issues with a near identical set-up. Actually, my vcore numbers were worse than yours at lower speeds but reached an almost identical 1.352 at 4.4. I just cannot seem to reach the high clocks/low voltage numbers that so many people seem to achieve with little to no effort. I wonder if it's just an issue inherent with these boards or if I'm doing something horribly wrong. Have you had any better luck with voltages now that BIOS 1.80 is out?
  10. No I am still running the 1.60 Bios. I have had my CPU running at 4300 for nearly a month without fail gaming business processing, usually about 12 - 14 hours a day.. with no problems. I am going to get a water system, looking at corsair as it looks easy to fit, if that can bring my temps down then i think 4.7 will be doable on the set up I have.

    As to the 1.8 bios i will wait for your report on it.. but i do notice there is mention made of improved CPU code in the Asrock info sheet.
  11. Damn and blast it.. the vcore at 43x is up to 1.290 with that 1.80 bios installed..lol, whatever they did with the cpu code it was not a "Chill" factor
  12. Oh and my idle state temps are up by 5 Degrees
  13. Well I found the problem, when I loaded the 1.80 bios somehow i have upset IAStordatasvc.exe. It was using up 25% of my CPU, whicjh is why the chip never got back to true idle and was warmer than before.

    Now i am looking to find out whether i got a virus with my new bios or whether the new bios is working out of sync with this exec file.

    I have stopped the process running through task manager ansd all my games and windows programmes seem to run fine>>>??/

    But the Intel RST service is disabled (As advised by my icon..) Time for more research
  14. And the answer is... when i loaded the new bios (1.80) somehow the IntelRST application was reset to automatic..kicked in about 30 secs after start up. The trick is to go into Task manager/resources/services and change the setting on the application to Manual. This may help, it worked for me.
  15. ID : 1897801
    Submitted by david goldwater | Thu, 07 Jul 2011 12:10:57 +0200 | Validated by CPU-Z 1.57


    Intel Core i5 2500K

    Windows 7 Home Premium Edition SP1 (Build 7601)

    CPU Arch : 1 CPU - 4 Cores - 4 Threads
    CPU PSN : Intel Core i5-2500K CPU @ 3.30GHz
    CPU EXT : MMX, SSE (1, 2, 3, 3S, 4.1, 4.2), EM64T, VT-x, AES, AVX
    CPUID : 6.A.7 / Extended : 6.2A
    CPU Cache : L1 : 4 x 32 / 4 x 32 KB - L2 : 4 x 256 KB
    CPU Cache : L3 : 6144 KB
    Core : Sandy Bridge (32 nm) / Stepping : D2

    Freq : 4800.6 MHz (100.01 * 48)

    MB Brand : ASRock
    MB Model : P67 Extreme4
    NB : Intel Sandy Bridge rev 09
    SB : Intel P67 rev B3


    GPU Type : Radeon HD 6850
    DirectX Version : 11.0


    RAM : 4096 MB DDR3
    RAM Speed : 666.8 MHz (1:5) @ 9-9-9-24
    Slot 1 : 2048MB (10700)
    Slot 1 Manufacturer : Kingston
    Slot 2 : 2048MB (10700)
    Slot 2 Manufacturer : Kingston


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