My Q6600 temps

sepulchre · 19 Feb 2008 at 23:23

Ian, that looks like a single instance of prime your running there with large FFT's, is that right?

If it is you need to be running prime 95 v25.5 to stress all 4 cores at once using small FFT's, then you will see some higher load temps, just to give you an idea my 3.5Ghz Q6600 under a single instance of prime will hit around 44C, but with all 4 cores stressed using prime v25.5 it will hit 59C.

If your already doing that though then just ignore me

Ian Marsh · 19 Feb 2008 at 23:33

Yep your right. I have now downloaded v25.5 and will run the test you mentioned. All new to this so bear with me

I will post results soon. Thanks

sepulchre · 19 Feb 2008 at 23:38

No Problem, make sure you watch your temps

I note in another thread you mention you have 6 hours prime, you may find when running 4 instances that thats not quite true as this will put much more stress on your CPU than the 1 instance has before hand.

Good luck with it!

Ian Marsh · 19 Feb 2008 at 23:50

sepulchre thanks mate. Its now up and running, the first attempt it failed within 1 min, so I increased the vcore to 1.325 and it seems stable so far load temps seem to be staying at about 51c/54c still not bad I think.

sepulchre · 20 Feb 2008 at 09:36

Looking good at those temps, did they increase any overtime? If not maybe you can go higher

IAmATeaf · 20 Feb 2008 at 09:47

Ian, those are still damn good temps for an AC7 Pro, what make's it even more astonishing is that your vid is quite high at 1.3250 but you managed to get to 3.2 by undervolting it. My vid is 1.2625 but at stock voltages it primes ok at 3.2 but I get an application error on shutdown so I've decided to leave it running at 3.0, that's good enough for me.

sepulchre · 20 Feb 2008 at 09:58

I'd have thought your vid 1.2625 chip would be good for a lot more than 3Ghz with a little more voltage to be honest, my 1.3125 hits 3.5Ghz with only a small bump in vcore, go on slam more volts though it

(granted VID is not the full storey and only an indicator of possible clocking potential)

Ian's temps are about what I would expect for a Q6600 at 3.2Ghz under a AC7 if you have good case cooling, IMHO the AC7 is far to under rated for what it is and gets slammed unnecessarily.

Ian Marsh · 20 Feb 2008 at 10:42

Edit (see below) :rolleyes:

Ian Marsh · 20 Feb 2008 at 11:13

Update - Forgot to mention in my last post that it was fine on prime for about 1 hour last night then I had a re-boot. So I am now running another Prime on small FFT at 3.2Ghz 400x8 and this time I have upped the volts from 1.325 to 1.350, its been stable on prime so far for 4 hours and going strong the temps have gone up a little to 58c on full load. So my VID is 1.325 and in the bios I have set my volts to 1.350 and in CPU-Z it reads 1.320 does this still seem ok ? Will post a screenshot later when its primed for a good few hours more.

sepulchre · 20 Feb 2008 at 12:46

Looks good Ian, if its a new build you should see your temps drop after a while once the TIM has bedded in

Rezident · 20 Feb 2008 at 13:14

SebC said:
Alright, I'm running Prime. 100% cpu utilisation and each core is hovering around 70C. Ambient detected by my CPU is 52C, although I use a 120mm Sharkoon 1000 for inflow.
I'm going to install my Noctua heatsink and fan now. Maybe replace the Sharkoon 1000 with the 2000 - although it's a bit too noisy for my taste.

When I had the stock Q6600 heatsink it had one of the cores at 75C with Prime. At stock! AC Freezer 7 has them all around 59.

IAmATeaf · 20 Feb 2008 at 13:21

Ian Marsh said:
Update - Forgot to mention in my last post that it was fine on prime for about 1 hour last night then I had a re-boot. So I am now running another Prime on small FFT at 3.2Ghz 400x8 and this time I have upped the volts from 1.325 to 1.350, its been stable on prime so far for 4 hours and going strong the temps have gone up a little to 58c on full load. So my VID is 1.325 and in the bios I have set my volts to 1.350 and in CPU-Z it reads 1.320 does this still seem ok ? Will post a screenshot later when its primed for a good few hours more.

That's still very good mate.

I've replaced 2 of my standard Adda fans in my Lian Li case with Yate Loons so far, still under temperature control and they certainly seem to blow more air then the Addas even at the very lowest setting, this has reduced the full load temps from 63/64 to 59. I'll replace the remaining 2 over the weekend as I'll need to get a soldering iron out for them, hopefully they'll also help be a few more degrees, I'll then see about pumping some more volts through the CPU to get it to 3.2

Ian Marsh · 20 Feb 2008 at 14:19

Ok I have it 7hrs Prime stable on small FFT at 3.2Ghz 400x8 with volts at 1.350 temps at the highest under load were 59c, so happy now. I am going to leave it at that dont really want to go higher at the moment. I did forget to make a screenshot though

but trust me it is stable and I am very pleased with it

It is my first ever go at overclocking and I would like to say thanks to sepulchre and IAmATeaf for your advice throughout the process. Thanks guys

lmfy2k · 27 Feb 2008 at 23:37

nice one Ian

was a good read!

just a quick question, is is better to do 400x8 or 355x9 to get 3.2Ghz?

uZi · 28 Feb 2008 at 00:20

You'll get more performance out of 400x8, but it'll stress the system more than 355x9.

lmfy2k · 28 Feb 2008 at 08:31

uZi said:
You'll get more performance out of 400x8, but it'll stress the system more than 355x9.

so in theory 400x8 will make the cpu run hotter?

uZi · 28 Feb 2008 at 09:23

I wouldn't have thought so.. if it did, it'd be a tiny difference... the northbridge will run a bit hotter and/or require more voltage though

IAmATeaf · 28 Feb 2008 at 09:28

lmfy2k said:
nice one Ian was a good read!

just a quick question, is is better to do 400x8 or 355x9 to get 3.2Ghz?

Don't forget to take the performance of your RAM into account. With my mobo I only 2x, 2.4x, 2.5x as multipliers for the RAM so using FSB 400 I could use 2x and have the memory running at stock. With FSB 355 I'd either have to use 2x or 2.4x, so running memory below stock or overclocked above stock, if the RAM can take it the overclocked above stock should also see a small improvement.

V3g3tto · 28 Feb 2008 at 10:27

Oh, just to contradict what people are saying in regards to x8 multiplier. On my CPU, it requires a lot less voltage to run and thus lower temps to use a x8 multi. however, if you only have 800mhz RAM like me, you won't obviously be able to raise above 400 FSB (mine crashes past 416fsb, meaning my RAM OC's to 832mhz lol), so either good OCing RAM is needed or faster for a good OC on x8 multi. But it does make the CPU more stable for me, as it's less stress on it, but like said, it puts more onto the northbridge/RAM.