Need advice q9400 overclock

[OILFIELDTRASH]

I am currently running my q9400 4.0ghz and was wondering max safe temps. I have run intel burn test and am getting:
74c max temp in real temp
78c max temp in core temp
77c mobo monitoring software
Keep in mind this is during a 40 times loop run intel burn test. I'm a little worried about temps. Is this too high temps.
I also have my ram voltage at 2.12 and specs call for 2.0-2.1 is this little bit of extra voltage going to hurt them?

 

[VirtualLarry]

Those temps are alright. Is that with a stock cooler, or an aftermarket cooler?

 

[OILFIELDTRASH]

Its aftermarket. I wouldn't dare try an overclock with the trash that comes bundled with cpu's.
Its a domino alc cpu cooler. I was about to lower voltages and speeds but you think thats ok? What are you getting max temps intel burn test?

 

[error8]

Nice oc and rock solid too. :thumbsup:

What voltage you have set for the cpu?

 

[OILFIELDTRASH]

Voltage 1.3625. Im trying to stay within intel specs. I believe max temp intel spec is 71.5c but since my cpu will rarely if ever see 100% load I was thinking of keeping it at this speed and voltage. What about temps what do you think?

 

[error8]

If that is 77 C in Linpack than it's quite cold, I would say. You're probably topping out at ~60 C in games or other programs. It's perfect as it is, at both voltage and temperature. Enjoy.

 

[OILFIELDTRASH]

Thanks alot now I can rest easy using this thing. B.T.W. It is linpack

 

[BonzaiDuck]

RealTemp and CoreTemp measure temperatures at the core sensors. The thermal spec of 71.5C is relative to the TCase legacy sensor beneath and at center of the processor cap. TCase is supposed to yield temperatures that are lower (between 5 and 15C) than the core sensors, but my experience (for an E8600 Wolfdale) suggests that it shows about the same as the core sensors under load. But that's just for my Wolfdale.

A lot of these Penryn cores have defective sensors, with Intel saying they're not meant to measure idle temperature values or measure them accurately.

The other posters are correct that what you see is about normal. I'd still be interested in some more information, like:

What is your room-ambient temperature in Fahrenheit?
What does CPU_Z show as the idle and load voltages with your 1.3625V setting?

You've achieved a 50% overclock, and as the others said, this is pretty darn good.

What is your Northbridge temperature at load?

 

[BonzaiDuck]

I was just checking my own Wolfdale system, having downloaded the newest version of OCCT and CPUID's HW-Monitor.

As noted elsewhere, there is a discrepancy between RealTemp and CoreTemp temperature readings, owing to calibration of the software or assumptions about the TJunction limit. So those two programs show temperatures consistently 5C apart.

OCCT shows my temperatures under LinPack at about 68C with room-ambient of 78F, while HW-Monitor -- using LinPack -- shows the maximums at around 77C.

So given that you're working with a quad-core OC'd by 50%, I'd say you're just fine.

 

[Jack Flash]

Wish I had bought RAM faster than DDR2-800 when I bought my rig... could have an OC like that!

 

[BonzaiDuck]

Originally posted by: Jack Flash
Wish I had bought RAM faster than DDR2-800 when I bought my rig... could have an OC like that!

These were selling at the Egg a few months ago for less than $55

The DDR2-1000's would also be good, but cost about twice as much at the Egg today.

the '900s will meet that spec with minimum spec voltage and latencies of 4,4,4,12.

I've got mine set to 850 Mhz (DDR) and timing 4,3,3,8 with the minimum 2.0V voltage setting (2.02V reported).

To get up to near 2,000 Mhz FSB with 1:1 ratio, you'd need to run the RAMs at DDR=1,000 Mhz. The 900's will do it (someone reported they'd go there within the spec voltage range and latencies at 4,4,4,12.) Certainly, the DDR2-1000's would do it, too.

I just don't understand, though, why the price on the DDR2-1000 kit is now above $100+, when it was as low as the 900s or almost as low -- a few months ago.

 

[OILFIELDTRASH]

Thanks for all the help guys but I couldn't get it stable 4.0ghz failed on overnight prime95 run. I backed it down to 3.75 alot lower voltages and lower temps.

 

[BonzaiDuck]

Originally posted by: OILFIELDTRASH
Thanks for all the help guys but I couldn't get it stable 4.0ghz failed on overnight prime95 run. I backed it down to 3.75 alot lower voltages and lower temps.

That's still a 40% over-clock, and more than a Ghz above the stock setting. Personally, I think 4.0 Ghz is a bit over-ambitious for a Q9400.