Overclock.net › Forums › Intel › Intel CPUs › Small issues with OC'ing
New Posts  All Forums:Forum Nav:

Small issues with OC'ing

post #1 of 3
Thread Starter 
Hello,

I completed my new 2500K build today, and of course I wanted to overclock it. I started off with a simple 4.0Ghz overclock. Multi to 40, Voltage to 1.2v

I ran IBT a few passes to provide a thermal stress to see what my 212+ was able to cool well enough.

While running IBT, CPU-Z first showed it at 99.8 BCLK, 16x multiplier. Great, intel speedstep, but thats not the issue.

It would occassionaly hit 36x multi,35x multi, and 40x multi, while keeping the 99.8 BCLK.

Not familiar with Intel OC'ing really, does anyone know why the multi discrepancy, and the keeping of the 99.8 BCLK under load?

EDIT:
A little more info.
All I've done in BIOS is manually set my RAM to GSkill specs, put multi to 40x, and vcore to 1.2v.
I've also set Turbo Boost Power limit to manual, short and long power limit to 250, and core current limit to 250, a la ultimate sandy bridge oc guide.

I'm probably missing some other settings.

EDIT2:

Disaster Strikes! PC just freezes running IBT Standard with above settings. What am I missing here? 1.2Vcore should be plenty for measly 4.0GHz. I did notice in CPU-Z a fluctuating VCore that was never at 1.2V however, going from 1.0 to just under 1.2
Edited by desmin88 - 1/7/12 at 4:11pm
post #2 of 3
Thread Starter 
Big problems now...

While just running a simple P95 blend test, UEFI defaults, my pc freezes after less than 1 minute of running it.

Temps were fine, didn't go above 45C. This sucks.
Any ideas? I can play BF3 for an hour just fine.

EDIT: I can run Small FFT for 3 minutes, no freeze, and Large FFT for 3 minutes no freeze. Blend freezes within seconds. What gives here?

EDIT2:
Wow, seems like I edit a lot...
I noticed in the bios it sets my ram to 9,9,9,28, 1n. G Skill specs states 9 9 9 24, 2n. Could this be causing a ram instability that would arise in prime blend?

Oh great, now it justs freezing whenever. Could this be related to installing a new CPU/Mem/ and mobo without a fresh windows install?
Edited by desmin88 - 1/7/12 at 5:23pm
post #3 of 3
no idea what guide youre following. ive never seen those settings.
first, use the xmp profile for your ram

here are 3

great guide here:
http://www.overclock.net/t/968053/official-the-sandy-stable-club-benchmarks-stable-rigs-guides-inc-spreadsheet/2240#post_14466483

and another here:
http://www.overclock.net/t/1100100/info-intel-2500k-2600k-overclocking-tips

and an asus rep's guide for asus p8p67 which is still good for most boards as a guide:
http://hardforum.com/showthread.php?t=1578110

i personally followed the asus rep's guide and then fine tuned it with munaim's then found silent's guide.
all 3 are pretty much the same.

the 2500k should run 4.0 with everything at auto settings no problem
w00t
(18 items)
 
   
CPUMotherboardGraphicsRAM
ph2 x20be asus m4a785-m sapphire vapor-x 4850  geil black dragon 1066 5-5-5-15-20 
Hard DriveOptical DriveCoolingOS
wd  asus dvd multi-write arctic cooling freezer 64 pro win 7 ultimate x64 
MonitorKeyboardPowerCase
samsung 42" lcd logitech wireless antec basic 500watt old dell crap 
MouseAudio
logitech wireless pioneer 7.1 
  hide details  
Reply
w00t
(18 items)
 
   
CPUMotherboardGraphicsRAM
ph2 x20be asus m4a785-m sapphire vapor-x 4850  geil black dragon 1066 5-5-5-15-20 
Hard DriveOptical DriveCoolingOS
wd  asus dvd multi-write arctic cooling freezer 64 pro win 7 ultimate x64 
MonitorKeyboardPowerCase
samsung 42" lcd logitech wireless antec basic 500watt old dell crap 
MouseAudio
logitech wireless pioneer 7.1 
  hide details  
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Intel CPUs
Overclock.net › Forums › Intel › Intel CPUs › Small issues with OC'ing