attempting above 3.6 on q6600

Jinu · Mar 25, 2008

im able to get 3.6 on my G0 and tried to go higher. i am able to boot into windows fine at 3.8 (423*9) using 1.52 vcore but when i run prime95, core1 fails after about 5 mins. i tried upping the vcore and still get the same result.
i dont think cooling is the issue since i am running water and am completely stable at 15 hours of prime95. any ideas on how i can go higher?

MIAHALLEN · Mar 26, 2008

Jinu said:
im able to get 3.6 on my G0 and tried to go higher. i am able to boot into windows fine at 3.8 (423*9) using 1.52 vcore but when i run prime95, core1 fails after about 5 mins. i tried upping the vcore and still get the same result.
i dont think cooling is the issue since i am running water and am completely stable at 15 hours of prime95. any ideas on how i can go higher?

I'm only on air, but I was able to reach my max prime95 stable speed at 3.85GHz....but I needed 1.575V (and lots of air) to get there. How much extra voltage have you tried giving it?

GTengineer · Mar 26, 2008

have you tried upping the NB voltage? you got 4 sticks of RAM which will put more stress on the NB.

Craxbax · Mar 26, 2008

Yes, or better yet, try removing 2 sticks of ram and OC it.

Jinu · Mar 26, 2008

i got the vcore up to 1.52 before i decided to stop cause i didnt want to go to high.....yet. will work on it more later this weekend.
i did bump the nb up a tad, 1.3 i believe, how high can i safely go before i meed better than passive cooling? or is it pretty much trial and oops. and if i remove 2 sticks, should i just go with 2x2gb? i will be dual booting vista 64 just so i can mess around with vista more and would like to have 4gb of ram.

GTengineer · Mar 26, 2008

1.4V NB should still be ok with passive cooling. But as someone said try only 2 sticks first as reference.

gsrcrxsi · Mar 26, 2008

my NB is passive and my q6600 @ 3.5 has it at 1.7V, but i have the p5k3 with heat pipes all over the NB

Neuromancer · Mar 26, 2008

Even at stock NB volts I would still actively cool that chipset. P35 is much better then 965 but you are still putting a hurting on it with an overclocked quad and 4 DIMMS.

Have you adjusted any other CPU settings? (REF and PLL voltages, drop enhancment things of that nature...I forget Abits terminology for them)

MIAHALLEN · Mar 27, 2008

Jinu said:
i got the vcore up to 1.52 before i decided to stop cause i didnt want to go to high.....yet. will work on it more later this weekend.
i did bump the nb up a tad, 1.3 i believe, how high can i safely go before i meed better than passive cooling? or is it pretty much trial and oops. and if i remove 2 sticks, should i just go with 2x2gb? i will be dual booting vista 64 just so i can mess around with vista more and would like to have 4gb of ram.

Are you looking for a 24/7 OC??? If so, I think your Vcore is too high. Most ppl reccommend staying under 1.5V for 24/7 duties. Maybe you should back it off to 3.6GHz like most others...plus, it'll solve your 2 vs 4 DIMM dilema.

If you're only looking for max stable OC....then taking the 2 DIMMS out would be temporary anyway, so what's the problem?

GTengineer · Mar 27, 2008

MIAHALLEN said:
Are you looking for a 24/7 OC??? If so, I think your Vcore is too high. Most ppl reccommend staying under 1.5V for 24/7 duties.

I have been running 3.8GHz @ 1.52V 24/7 for the last 6 months (on water) with heavy number crunching. Zero problems. Intel lists absolute maximum vcore at 1.55V for the Q6600.

=ACID RAIN= · Mar 27, 2008

Jinu, do me a favor and bring it to that max overclock again, and run prime on all 4 as usual and tell me what CPU-Z reports your core voltage as before a core fails out. I want to see how far it droops.

MIAHALLEN · Mar 27, 2008

GTengineer said:
I have been running 3.8GHz @ 1.52V 24/7 for the last 6 months (on water) with heavy number crunching. Zero problems. Intel lists absolute maximum vcore at 1.55V for the Q6600.

I said MOST ppl

I'm more confident in high voltages/temps being safe than the average OCer as well. Apparently, you are even more confident than me... :beer:

Jinu · Mar 27, 2008

=ACID RAIN= said:
Jinu, do me a favor and bring it to that max overclock again, and run prime on all 4 as usual and tell me what CPU-Z reports your core voltage as before a core fails out. I want to see how far it droops.

i will get to it tomorrow when i get done with class. for anyone in college NEVER TAKE A SPRING INTERIM CLASS!!!!!! one week for 16 weeks of material. driving me up the wall. /rant

Jinu · Mar 27, 2008

set up to 423*9 1.54 vcore and 1.33 nb. vdrop was 1.456 and after about 17 mins the second core had a rounding error. now, its always the second core thats failing. should i reset my waterblock? will that help any?

edit: still had all 4 dimms occupied as well. will try running with two dimms later tonight.

=ACID RAIN= · Mar 28, 2008

Shouldn't you get that NB up a little? Set NB to 1.4+ and see how it runs, then try going up one more notch on vcore if that doesn't help. Watch PWM temps because they are going to get HOT with a quad at that vcore.

Jinu · Mar 28, 2008

set the nb to 1.45 and no go. so screw it, lol. im just gonna keep it at 3.6 and lower my vcore. oh well.

1138 · Mar 28, 2008

Jinu said:
set up to 423*9 1.54 vcore and 1.33 nb. vdrop was 1.456 and after about 17 mins the second core had a rounding error. now, its always the second core thats failing. should i reset my waterblock? will that help any?

edit: still had all 4 dimms occupied as well. will try running with two dimms later tonight.

What about more VTT volts & GTL REF? I finally got 400x9 running Prime95 24+ hours stable by changing these.

gsrcrxsi · Mar 28, 2008

go higher on the NB. mine is at 1.7 for my 3.5GHz OC. might not need it, i just jacked everything up for my 1.325 VID chip. i havent tried reducing it to see its affect on stability yet.

Jinu · Mar 28, 2008

1138 said:
What about more VTT volts & GTL REF? I finally got 400x9 running Prime95 24+ hours stable by changing these.

what do you ave your VTT and GTL set at?
i will try and crank my nb up higher, just dont wanna over heat and kill the mobo.

gsrcrxsi · Mar 28, 2008

mine doesnt even feel warm to the touch. that could be my MB (asus p5k3 deluxe, lots of heat pipes) and case flow (antec 900) though.

edit: its warm to the touch, but not hot in the least.

attempting above 3.6 on q6600

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