Q9550 overclock.

setter

setter

setter

Caporegime
Joined
14 Dec 2005
Posts
28,067
Location
armoy, n. ireland
Had a crack at upping my q9550 from 3.4ghz on stock voltage of 1.200. Running 8.5x425, (3613mhz) upped the voltage 2 notches from stock, llc enabled, chipset voltages at.

PLL, 1.54
NB, 1.14
VTT, 1.14

Ram running at 510mhz ddr2, on 5:6 ratio, 5-5-5-15

P95 8hr run small fft
q955036ghzv2.jpg


EDIT: Updated with 8hr p95 small fft run screen.


Opinions and advice appreciated that could help me push it a bit more.:)
 
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Not to thread jack (save me making another one about the same subject)

I've just overclocked my Q9550 to 3.6mhz but on my EvGA board the multi is only showing x8 (when the chip has a max multi of 8.5), anyone know how to help me increase the multi to 8.5 (it was on 8.5 at first boot, but once I started to overclock it dropped to x8)

To the OP, trying upping the volts to 1.25 and see if you can push the chip to 3.6+
 
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Could maybe do with a bios update, thats what i had to do on my board to enable the 8.5 multi, im gonna be pushing the clock a bit higher once i get it stable at current settings, im almost 4hrs into a p95 small fft test, so hoping it holds out for a few more hours. Then im gonna try 3.8ghz then hopefully 4ghz.
 
setter said:
Could maybe do with a bios update, thats what i had to do on my board to enable the 8.5 multi, im gonna be pushing the clock a bit higher once i get it stable at current settings, im almost 4hrs into a p95 small fft test, so hoping it holds out for a few more hours. Then im gonna try 3.8ghz then hopefully 4ghz.
Click to expand...

I know it could probs do with one, just it started at 8.5, before I changed the clocks, I might post on the EvGA forums and see what people say.
 
Silent UK said:
I know it could probs do with one, just it started at 8.5, before I changed the clocks, I might post on the EvGA forums and see what people say.
Click to expand...

just been looking at the posts i started when I was overclocking

http://forums.overclockers.co.uk/showthread.php?t=17991670

http://forums.overclockers.co.uk/showthread.php?t=17997348&highlight=username_derek

and the part you're looking for to increase it from 8 to 8.5x is something called the fine cpu clock ratio or similar if differing mobo in the MB Intelligent Tweaker.
 
setter said:
im gonna be pushing the clock a bit higher once i get it stable at current settings, im almost 4hrs into a p95 small fft test, so hoping it holds out for a few more hours. Then im gonna try 3.8ghz then hopefully 4ghz.
Click to expand...

Don't waste hours with p95 yet. 10-15 passes of IBT will tell you if it's stable or not.

With the temps you're getting at 3.6 I reckon you'll get to 4ghz. You'll probably find that you'll need to go to 1.3+vcore to get it stable though. Keep us posted.
 
Im gonna let p95 run for 8 hours or so as its nearly done, forgot all about ibt tbh, quite pleased with the temps so far, though i could lower them a fair bit if i swapped my pwm silent eagles for 2 of the full blown 2000 rpm models i have in the case. Will update as i go along, and thanks for the advice.:)
 
Crikey, i didnt think there'd be that much difference between the 2 revisions, ive edited the op with a successful 8hr small fft test screen.
 
I think that the difference is greater the higher the clock gets and subsequently the higher the vcore gets.
 
Yep ill be pushing mine a bit further, temps are a bit high for my liking. I may switch my two 2000 rpm silent eagle fans onto the TRUE to drop the temps, currently running silent eagle se, 400-1200 pwm fans on my TRUE black which are very dissapointing, i reckon i could drop 5-6c of each core, even considering lapping the cpu, as it made a vast difference on my old q6600 with my current lapped TRUE black.
 
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