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2500K Overclock Issues, Help needed!

post #1 of 4
Thread Starter 
Howdy all,

I need some help with my 2500k overclock. My specs are in sig rig, and below settings are what I have for 4.6ghz stable, its been folding on bigadv for past 15+ hours without a hitch. My problem is i just cant seem to get past 4.6ghz...I know these cpus have a wall like any, but going from 1.34v to over 1.4 without any success is taking the PI...well you know!

So heres my settings, any that stand out as being likey cuplrit for my lack of further OC success?

thanks in advance!









post #2 of 4
Change EPU power saving to Disable.
Change the DRAM Command Refresh rate to 2N for ow.
Change the memory frequency from Auto to 1600mhz, if that's your stock.
Change VRM Frequency to manual and type in 350 underneath.
Change cpu Current Capability to 140%.


The ones in bold should have been changed right from the get go.



Do you need PLL overvoltage enabled for 4.7? if so leave it enabled. Hwo you knwo, is when it is disabled and it doesn't boot to windows, then you'll need PLL overvoltage.

increase the PLL one more and increase the vcore twice and obviously change the multi to 47 and try again.


By the way doesn't matter if your folding on it for two weeks it could still fail in prime blend in under 5 mins. I know it's shocking, but prime blend is the stability tester for sandybridge. Refer to THIS post for a bit info on that.
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it looks alive
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Sandy Transformed
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CPUMotherboardGraphicsRAM
i5 2500K [5ghz 1.44v 24/7] Asus Maximus IV Extreme SLI GTX 460 @ 920/1840/4100 [1.11v] 4GB Dominator GT @ 2133mhz CL8 [1.65v] 
Hard DriveHard DriveCoolingOS
Intel X25-M G2 80GB 3x Samsung F3 500GB RAID 0 EK Supreme HF Full Copper Windows 7 Ultimate 64bit 
MonitorPowerCaseAudio
LG42SL9500 42" 1080p [Surround Soon] XFX XXX Edition 650w Xigmatec Elysium JVC HA-RX700 [foam mod] 
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post #3 of 4
This thread is interesting, because when I was trying for 4.7GHz I had to jump quite a bit, like you did, into the early 1.4's on the vcore to actually get a stable 4.7GHz, compared to what I'm currently running at for 4.6GHz. I'm going to keep an eye on this thread as some details might be useful in aiding me to get 4.7GHz with less vcore jump. Perhaps I should make my own thread later on if I am still stuck, as I have plenty of head room (temps are currently 57-62C under P95 blend for an hour).

Sorry if I posted something off topic here, just this thread looks useful so I'll keep an eye on this one.
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Ixevil
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post #4 of 4
Thread Starter 
Quote:
Originally Posted by munaim1 View Post
Change EPU power saving to Disable.
Change the DRAM Command Refresh rate to 2N for ow.
Change the memory frequency from Auto to 1600mhz, if that's your stock.
Change VRM Frequency to manual and type in 350 underneath.
Change cpu Current Capability to 140%.


The ones in bold should have been changed right from the get go.



Do you need PLL overvoltage enabled for 4.7? if so leave it enabled. Hwo you knwo, is when it is disabled and it doesn't boot to windows, then you'll need PLL overvoltage.

increase the PLL one more and increase the vcore twice and obviously change the multi to 47 and try again.


By the way doesn't matter if your folding on it for two weeks it could still fail in prime blend in under 5 mins. I know it's shocking, but prime blend is the stability tester for sandybridge. Refer to THIS post for a bit info on that.
OK! cheers for those, ill get them changed now!

Quote:
Originally Posted by Ixel View Post
This thread is interesting, because when I was trying for 4.7GHz I had to jump quite a bit, like you did, into the early 1.4's on the vcore to actually get a stable 4.7GHz, compared to what I'm currently running at for 4.6GHz. I'm going to keep an eye on this thread as some details might be useful in aiding me to get 4.7GHz with less vcore jump. Perhaps I should make my own thread later on if I am still stuck, as I have plenty of head room (temps are currently 57-62C under P95 blend for an hour).

Sorry if I posted something off topic here, just this thread looks useful so I'll keep an eye on this one.
yeah no worries budd, your more than welcome to post here. Im having same issue as you then, my 4.6 is relatively easy, 4.7 is a big no no. I managed to get p95 stable at 4.7ghz but it needed 1.408v (1.42v bios)....too big a jump for me that, but we;ll see

EDIT: it's not worked got bsod with those new settings! 0x0124
Edited by $ilent - 8/20/11 at 11:49am
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