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~~~~~IMPORTANT SANDYBRIDGE OC INFO: Voltages & OC Guide!!~~~~~

OzZie said:
What's the deal with having Load Line set to extreme on Asus boards?

I find i can get a very decent overclock at 4.8 @ 1.35v if i use this setting, along with PPL overvoltage enabled.

With high or ultra high, the BIOS needs more volts to compensate for the drop, so what am i best doing :

-1.35v with extreme LLC
-1.385v-1.40v with high/ultra high

Thanks.
Click to expand...

Would quite like to know this too, I have kept from going to extreme, as I assume there must be some form of catch...
 
Anyone with a MSI GD65 seeing low BCLK? It's set to 10000 (10khz) in the bios but both cpu-z and aida64 show it as running 99.8.

Think it's ok to boost it up a bit to get 100?



EDIT: Just updated to bios 1.8 and still having same issue
 
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Vtec9k said:
Anyone with a MSI GD65 seeing low BCLK? It's set to 10000 (10khz) in the bios but both cpu-z and aida64 show it as running 99.8.

Think it's ok to boost it up a bit to get 100?



EDIT: Just updated to bios 1.8 and still having same issue
Click to expand...

My GD55 does this, just up the bclk to 10007, been fine since Jan 6th :D
 
Cool will give that a try thanks :)

EDIT: Yup that worked. Now benching 4.7Ghz, getting closer to 5Ghz :)
 
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I'm looking at buying a OC bundle but notice they all only come with 4GB of RAM. How come the new chips only come with 4g of ram? My old i7 OC to 4.2 came with 6. Is this not a step backwards? I'm genuinely asking don't flame me please.
 
socket 1155 is dual channel where as 1366 is tripple channel my friend, so two sticks of 2gb on 1155 run in duel, 3 sticks of 2gb for 1366 runs in tripple channel

but dispite that, benchmarks show that the sandy bridge even in just duel channel is a lot faster than the older i5 / i7s

;)
 
cHk4 said:
I'm looking at buying a OC bundle but notice they all only come with 4GB of RAM. How come the new chips only come with 4g of ram? My old i7 OC to 4.2 came with 6. Is this not a step backwards? I'm genuinely asking don't flame me please.
Click to expand...

The p67 motherboards are dual channel, so sticks in pairs, the previous board you had wouldve been tripple channel so sticks in 3's.
 
bigmike20vt said:
wow i am out of the computer scene but base clock of 100? is that not a bit pants?

back in the day it was always better to push that as far as you could before upping the multiplier.

glad i read this thread before trying to overclock! i take it the way the chips run is different these days? or is base clock not what i am thinking of?

cheers

ps what is the fastest i can safely hope to aim for on a stock cooler, at stock voltages?

am not gonna upgrade my cooler until i stick a new board in.
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On my 2600K 4Ghz is Easily Achieveable on Stock Cooler + Stock Volts, Maybe more. (4.2/3?)

Im in the Same boat as you. Going to wait for the new B3 Revision motherboard before i install a new CPU Cooler.
 
may i ask though, how come everyones using 1.3+v for sandy bridges at only 4.4ghz etc

iv got a 2500k and im at 1.265v right now @ 4.8ghz and its 24 hour prime stable so i quit prime after 24 hours, and iv ran it at 5ghz @ 1.275v for 6 hours stable befor quitting which i run for benchmarks


have i got an exelent clocking chip or something?
 
IceShock said:
may i ask though, how come everyones using 1.3+v for sandy bridges at only 4.4ghz etc

iv got a 2500k and im at 1.265v right now @ 4.8ghz and its 24 hour prime stable so i quit prime after 24 hours, and iv ran it at 5ghz @ 1.275v for 6 hours stable befor quitting which i run for benchmarks


have i got an exelent clocking chip or something?
Click to expand...

Yep, I need 1.32V to get 4.7GHz stable, and 4.9GHz isn't possible even with 1.36V
 
Brilliant, thanks a lot guys for the reply that makes perfect sense!

Still debating if it's worth building a new rig with the spec I have in my sig ( well I'd take the 580 out of it :D )
 
IceShock said:
may i ask though, how come everyones using 1.3+v for sandy bridges at only 4.4ghz etc

iv got a 2500k and im at 1.265v right now @ 4.8ghz and its 24 hour prime stable so i quit prime after 24 hours, and iv ran it at 5ghz @ 1.275v for 6 hours stable befor quitting which i run for benchmarks


have i got an exelent clocking chip or something?
Click to expand...

You're probably not really stable tbh. Are you just doing prime small ffts?
 
IceShock said:
may i ask though, how come everyones using 1.3+v for sandy bridges at only 4.4ghz etc

iv got a 2500k and im at 1.265v right now @ 4.8ghz and its 24 hour prime stable so i quit prime after 24 hours, and iv ran it at 5ghz @ 1.275v for 6 hours stable befor quitting which i run for benchmarks


have i got an exelent clocking chip or something?
Click to expand...

Post some SuperPi and other benchmarks, and a LinX/Intelburntest result at 5 ghz, as well as some temps. Something's wrong; it shouldn't be physically possible to run 5 ghz at 1.275v. Is this with LLC? Are these bios set voltages or voltages at load? I could see this happening if LLC were set to extreme so 1.275v in bios would rise to 1.35v+ at load.

The lowest vcore I ever saw anyone run stable at 5 ghz was 1.35v load. And those are from the gem chips that do 5.8 ghz. Either you're not as stable as you think, or the voltages are off.

Disabling HT should only be good for a 0.025 drop in voltages.
 
I've got an Asus P8P67 board, is the auto overclocking feature it has any good?

Reason I ask is not that I can't do it manually, just that it's running on the stock cooler atm so not too fussed about getting a maximum oc. I also don't wont to spend hours fine tuning it on the stock cooler when I'll be getting an upgraded cooler in April when I'm back from holiday.

Sound like a sensible plan to just use auto overclock for now?
 
maybe not alx as the auto oc set my bclk to 103 and its said on the first page of this thread never to clock using base clock
 
alx said:
I've got an Asus P8P67 board, is the auto overclocking feature it has any good?

Reason I ask is not that I can't do it manually, just that it's running on the stock cooler atm so not too fussed about getting a maximum oc. I also don't wont to spend hours fine tuning it on the stock cooler when I'll be getting an upgraded cooler in April when I'm back from holiday.

Sound like a sensible plan to just use auto overclock for now?
Click to expand...

I have an Asus P67 Sabertooth, I've shyed away from the auto setting as I noticed it put's my vcore up higher than 1.38v on higher overclocks (4.7ghz+)

If you are gonna use the auto settings I suggest you use CPU-Z to keep a close eye on what volts are being pushed through.

Personally I've had good results using a guide that someone posted a few pages back from a guy who works @ Asus - I can't find it right now but I'll link it when I get home.

EDIT: http://hardforum.com/showthread.php?t=1578110

So far I've managed to get to 4.7ghz @ 1.38v on my 2500k -prime95 blend for 8 hours and just completed a full intel burn test with no issues, before I used the guide I couldn't get stability any higher than 4.4ghz.

4.8ghz still seems elusive though, currently I'm @ 1.5v on memory and 1.7v PLL - is it worth trying to increase these to get stable @ 4.8ghz+?

Also if I do set a PLL of 1.9v for example, should I turn PLL overvolting or whatever it's called off, as that could increase it over the recommended 1.9v?

Cheers
 
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