Problem with overclocking Q6600

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Ok. I set:

400*8 with ram/fsb ratio 1:1, ram 5-5-5-15

CPU Core Voltage - 1,42
DDR Voltage - 2.2V
CPU VTT Voltage 1.4250
ICH 1,55
MCH 1,45
CPU GTLREF - 67%

I run OCCT Linpack test for 1h and it didn't show any errors so it's a good sign, right? (with VTT 1,35 and MCH 1,41 it failed after 30mins)
The temps compared with Prime95 were insane though - up to 79C on the hottest core. But usually 74-75. Later on I'll try running Prime95 for 2-3h and see how it works.

If it'll be ok, I think i'll try lowering the Core Voltage to relax on the temps.
 
Damn... I was playing GTA 4 and my computer suddenly shut down. Without even a warning. And later it didn't even want to start. I had to reset the bios.

Damn what could that be?

Maybe I just should stick with the 3,0Ghz for now?
 
what kind of cooler are you running on your CPU????

cause anything above 70* on full load is bad territory as far as temps go in degrees Celsius
 
something is up because that is a massive cooler and about twice the size of the one Gekko Shadow is running (Zerotherm) but yet he sees way lower temps than you are.


you make sure that your case has good ventilation and that the thermal compound was applied correctly and so on?
 
I'm thinking about applying the termal paste again. But I did it correctly as far as I know. And about the ventilation - my case is too small and that might be the cause of the temps.

But what about this shut down? What could that be? CoreTemp showed 64*C max while playing GTA 4 so not that bad.
 
take your side pannel off and stick a house fan on their and game for a lil bit...if it does not shutdown then you have found your issue.

CPUs will usually shutdown automatically when they overheat but 64* C isn't close enough...i have seen 980X 6cores reach 94*C and keep benchmarking but we are not talking about those that was just an example.


try some Arctic Silver5 thermal compound.....works wonders for me 😀
 
Arctic Silver5 - this is the thermal compound I used.

Ok - but is It safe to set those settings again and run prime95? I mean I don't want to break anything...
 
Artic Silver 5 mate! :)

And tx-jose is right lol - i use a much smaller cooler with a 92mm fan but keeps my temps under 64C with prime95. Maybe yours is time for a cleanup xD.

And i ALWAYS use artic silver 5 xD.

And you should be able to push to 3.3ghz at least. I think you just might need more beef :lol: psu power? xD is that what you are using? a 450w?? :O
 
x2 on what gekko said.......deff give your system a thuro cleaning!!! dust in your heat sink reduces its efficiency and their for it wont cool as well. their is no reason you should be seeing those temps on a OC like that lol.....


 
try the house fan trick i told you about...if your system sees drastically lower temps then you PC Case is to blame for you high temps...



are you sure that 450W is enough?? maybe thats what caused the shutdown?? i know Gekko has a 750W 80+ silver PSU on his Q8300 but he has more hardware that requires a bit more power lol
 
Well I don't know if it's enough. But here's what I'll do. I'll take my side panel off, set those settings again and run prime for ar least 2h and then play some games and let you know how it worked.

If it fails or shuts down again - I'll stick with 3.0Ghz until i get a new PSU and a case with better ventilation.

And thanks for your help guys :)
 
Awesome, lets us know how that works out - and i would recommend a 650w minimum (future proof for another hard drive or something :lol:) and maybe corsair x)

And you usually need to run prime95 for say a good solid 24 hours to say you have a stable STABLE system. :lol: there's stable - and then there's "stable" xDD

But do that and good luck! :)
 
Ok. I run prime95 with exactly the same settings as for OCCT and after a bit less than 1h I got:

FATAL ERROR: Rounding was 0.5, expected less than 0.4
Hardware failure detected, consult stress.txt file.

And worker 2 stopped. BUT the temps were much lower - the highest noted was 65*C. Will try bumping up the Core Voltage from 1,42 to 1,44 or 1,46. (but tomorrow)

Oh and one more thing - is CPU VTT Voltage 1.4250 and MCH 1,45 high enough? Because if I want to set VTT higher I have to raise MCH too and I don't really know the limits on those.
 



70* C is where you start to push the barrier of what is safe for a CPU under full load
 
^ :lol:

hell push that cpu to 90C and it'll still live - just not for long XD

No but temps hitting 65C are ok, 70C still ok, over 75C whoah start looking for a new cooler or start thinking about water cooling xD.

 
Ok. I've decided that OC'ing this 200mhz probably won't make a difference in games so I tried at least 3,3Ghz. Here's what I set:


366*9 with ram/fsb ratio 1:1, ram 5-5-5-15


CPU Core Voltage - 1,46
DDR Voltage - 2.2V
CPU VTT Voltage 1.4250
ICH 1,55
MCH 1,45
CPU GTLREF - 67%

And it failed almost instantly giving me
FATAL ERROR: Rounding was 0.5, expected less than 0.

I set FSB 412*8 and CPU Voltage to 1,48 and had the same error. So do you have any ideas what else can I do to make it work?
 

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