Dostoyevsky77

You're about where I am on my P5N32-E/E6750 with Zalman 9700. (Specs are in my profile as "My Wife's System"). I am running at 3.4 at 1.45v because case circulation is poor and I'm getting about the same temperatures as you (maybe a little lower; low sixties).

The only thing I have a bit different is 1.4v on the NB and a Spirit II for extra cooling. It comes highly recommended.

My E6750 needs a lot of volts on this board. It's not just me, either. Others running it or the E6850 need about 0.1v more than what others are reporting. Since I'm running at slightly higher vCore than you at lower temperatures, I would look closely at case circulation. Also, do you have the Zalman at 100% fan? Even at 100%, it performs much better with some strong pull exhaust on the rear case.

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E8400 4.23 / QX6700 3.83 / E6750 3.82
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AkiraX123

thanks for the reply!! i'd be inclined to say that maybe my case circulation could be better...the zalman has a 120mm fan mounted directly behind it though. what program /s are you using to measure your results? I'm using coretemp and prime95.. coretemp measures tjunction is that correct? if i've been reading correctly, the delta between tcase and tjunction is about 10C, which would make my tcase about 55C rather than the 65C that i reported. any thoughts?

i also thought i read that silicon begins to degrade at 65C. should I aim for keeping all temps, including tjunction, below 65C? I'd like to keep this 6750 for a good long time!

AkiraX123

oh, one more thing to add...i've been oc'ing this chip in sync mode. if i switched to "unlinked" do you think there is a chance that i could get stable at slightly lower voltages vs. sync mode?

Dostoyevsky77

UNLINKED is the desired state. I have never run in SYNC mode. Once you've set your FSB, you should manually calculate the divider as a function of your desired RAM speed. Therefore, if your target OC is 3.4, you can calculate RAM speed at, for example, 1022 for 6:5, 850 for 1:1, 1133 for 4:3, and so on. Even if you want to run synchronously (1:1), you should do so UNLINKED with the appropriate values manually entered. Whether this will actually affect your performance or stability is debatable, but I have seen those who claim it does. In general, it is also a good practice. Sometimes the BIOS is not as clever as you. I keep a calculator by my keyboard for this very purpose.

I use Everest to measure temperatures. The E6750 is a 65nm chip, so CoreTemp and Everest read temperatures correctly. It is the 45nm chips for which they are incorrect by 10 degrees.

I have never heard of silicon degrading at 65(c). I have a QX6700 that runs really hot. For it, I only consider temperatures above 75(c) to be unacceptable. The chip continues to run fine, 1.5 years on. Vis-a-vis Tcase and Tjunction, the best is to disregard Tcase altogether. The only temperatures that matter are your internal core temperatures. However, in general practice, I think keeping the E6750 below 65(c) is a very good idea.

Incidentally, I also have a 120mm mounted behind the Zalman. It sucks (both literally and figuratively). The Zalman fan is weak. Unless you have some good intake from somewhere else, it's almost just there for looks. I am very upset with my wife's case, and it is also the reason why I'm running only at 3.4. I am waiting for a good case to go on crazy sale (I have my eye on the CM690: some extra 120s on that case make it a great performer for the $).

Hope it helps. Good luck.

__________________
3DMark06: 18,426, 3DMark Vantage: P13,913
E8400 4.23 / QX6700 3.83 / E6750 3.82
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AkiraX123

hey thanks man i will try unlinked.

Bar_Rat

Hey guys

Just wanna know what BIOS is currently the best for tthis motherboard?

AkiraX123

65nm chips seem to oc well with 1203-1205 bios - 45nm needs the newer 1405 bios

Marv74br

Hi, guys! I just registered for this forum after finding this thread on google...

I have the PC on the signature, and I'm a total NEWBIE on Overclocking... if anyone can help me on tweaking this machine a little bit... I've run several benchs on it and I feel it's very, very slow for the parts I've put on it... any 'Overclock 101' on P5N32-E + Q6600 + DDR2/800 + 8800GTS(92) around here?

Thanks in advance...

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Marv74br
|PC: P5N32-E SLI/Q6600/8800GTS/4G/640G RAID0/22" 2ms
|MAC: MacBook Pro 17FullHD C2D 2.6/4G/200G 7200/8600m GT 512mb
|Time Capsule 1t | iPod g5.5 80g | PS2 Slim | PS3 US 40g
|Logitech G25 | RinoSeat | KOSS PortaPRO | ADSL 8mbps

Dostoyevsky77

Hi, and welcome.

It would be a lot easier if you read the first page of this thread and then posted your specific questions. Robilar did a great job of turning the first post into an 'Overclock 101' for this board. Unfortunately, a lot of Q6600 owners jumped ship because it's not the ideal board for quad OC, but you should get to 3.2-3.4 with no problems.

Incidentally, you might want to post your specs HERE.

__________________
3DMark06: 18,426, 3DMark Vantage: P13,913
E8400 4.23 / QX6700 3.83 / E6750 3.82
System Gallery

Marv74br

Thanks for the reply...

I read the first 3 pages of the thread, tried a few things that I found there, but then my PC simply won't start... black screen, then three long beeps, I got to open it up and reset the cmos... :P

I don't want anythin' that large, 3.0 is good enough, I don't have watercooling...

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Marv74br
|PC: P5N32-E SLI/Q6600/8800GTS/4G/640G RAID0/22" 2ms
|MAC: MacBook Pro 17FullHD C2D 2.6/4G/200G 7200/8600m GT 512mb
|Time Capsule 1t | iPod g5.5 80g | PS2 Slim | PS3 US 40g
|Logitech G25 | RinoSeat | KOSS PortaPRO | ADSL 8mbps