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2500 4.8 oc

post #1 of 8
Thread Starter 
Hey guys always seem to get amazing help on here so i just wanted to ask

My system is a

2500k -EX supream waterblock
gigabyte UD7-b3
4x2gb 1866 ripjaw x cl8
asus 6990 - koolance waterblock
corsiar - 1200ax PSU

i curently have my system overclocked at 4.8 with a bios vcore of 1.425
with easy tune im reading 1.380 load
temps are 28 idel 60 load useing prime but ive been tolled not to go over 1.4 what should i do my LLC is Level 1
/vtt is auto
System agent is also auto
pll over voltage enabled

so pretty much what im asking is should i go over 1.4 or not other places ive been tolled not to go over 1.5 just a bit stuck any help would be amazing thanks heaps..
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Great odens raven
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post #2 of 8
For 24/7, you should probably not go above 1.42v BIOS if LLC1 is enabled.
For temporary gaming and benching, you should be ok up to 1.45v set in BIOS. You can just make a profile.
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post #3 of 8
I wouldn't go over 1.45 for 24/7
post #4 of 8
I think you're fine at 4.8GHz, I run up to and over 1.55v for benching and have had no problems with my chip.

Just keep it cool and don't try to prime it at 5.4GHz.
    
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post #5 of 8
If your after a 100% safe 24/7 overclock staying below 1.35v is by far your best bet. With 1.35v you should be able to have a nice stable 4.5Ghz overclock. Simply put loosing 300Mhz for 0.10v is a decent trade off for peace of mind.

With that being said i wouldn't go over 1.4v for 24/7. As Bella i bench at 5.5Ghz(HT on) with 1.58v and don't have any problem, but i like to keep my 24/7 overclock in the green zone.
post #6 of 8
I think it depends on your chip, It takes 1.4v for me to be stable @ 4.5ghz. It takes 1.44v bios 1.456v under full load to be stable @4.8ghz on my chip with temps around 67 degrees.

i can boot and load into windows @5ghz but it eats around 1.53v so i dont bother.
Edited by Chewy - 4/18/11 at 6:27am
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post #7 of 8
Do you need PLL Overvoltage enabled for 48x? Can you maintain stability in your overclock with it disabled? If so, you may be able to lower CPU voltage a little more.

You could also try lowering CPU PLL voltage down to 1.75-1.77V. That should allow you to lower CPU voltage a little more as well. 1.7625V was the sweet spot for me, as 1.7-1.75625V didn't change anything and 1.76875V+ was too much. I was able to lower CPU voltage -0.03V this way.

Otherwise I guess you're stuck. What you have isn't bad though.
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post #8 of 8
I would say so yes although it may work without pll.

I just raised vccio voltage to 1.1v and i can now drop my vcore and run prime under load showing 1.344v @ 4.5ghz before i needed 1.4v
i have also been able to drop my vcore for 4.8 ghz showing 1.425v under load
thats a major improvement!
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