i only change the FSB to 400 , all setting as default. What could be the reason that limit my processor to 3.4ghz only? It is because of
ram or i need to increase the vcore higher?
Intel Q9550 overclock, Need help
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 Nov 21 2008, 01:18 PM, updated 18y ago
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#1
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Junior Member
107 posts Joined: Oct 2005 
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Hi , i am newbies in overlocking, i have an intel Q9550 and pc667 value ram , i only manage to overclock to 3.4ghz(8.5X400),
i only change the FSB to 400 , all setting as default. What could be the reason that limit my processor to 3.4ghz only? It is because of ram or i need to increase the vcore higher? |
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Nov 21 2008, 02:09 PM
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#2
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Senior Member
4,947 posts Joined: Nov 2007  
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It is because of your RAMs.
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Nov 21 2008, 03:41 PM
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#3
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Junior Member
107 posts Joined: Oct 2005
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QUOTE(Silverfire @ Nov 21 2008, 02:09 PM) It is because of your RAMs. Must i change the ram to pc800 or can i use a lower fsb and increase multiplier? |
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Nov 21 2008, 04:33 PM
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#4
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Senior Member
1,864 posts Joined: Jun 2008
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Q9550 is limited to a maximum of 8.5 multiplier. Only Extreme Edition processors (among Intel procs) have completely unlocked multiplier.
So, you must raise your FSB. Get better RAM, to reach 4Ghz for example you will need RAM that can reach DDR2-940. |
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Nov 21 2008, 07:08 PM
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#5
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Elite
5,784 posts Joined: Jan 2003 From: Shah Alam
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try this first, Relaxed the ram timings to 5-6-6-18. Raise the ram voltage to 1.9-2.0v. AFAIK, value rams are pretty decent overclockers, at least ddr 2 900 is reachable
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Dec 28 2008, 09:19 PM
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#6
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Junior Member
112 posts Joined: May 2008
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mine running 4ghz vcore set to 1.34v..set 1:1 ratio...i think ur ram need to change...go for atleast 800mhz...then just set ur fsb to 471 x 8.5...slowly up ur vcore untill it stable...good luck...
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Dec 28 2008, 10:25 PM
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#7
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VIP
2,510 posts Joined: Dec 2004 From: Penang Island and Bidor
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QUOTE(mz2926 @ Dec 28 2008, 09:19 PM) mine running 4ghz vcore set to 1.34v..set 1:1 ratio...i think ur ram need to change...go for atleast 800mhz...then just set ur fsb to 471 x 8.5...slowly up ur vcore untill it stable...good luck... bro... not all mobo can allow that high fsb... in your case, it is your mobo that allows such high fsb  |
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Dec 29 2008, 11:14 PM
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#8
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Junior Member
112 posts Joined: May 2008
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hmmm..dont know about that..maybe ur right..last time using this proc with tpower seem cant go higher than 3.8ghz...but ok with c2d proc...
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Dec 29 2008, 11:34 PM
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#9
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Senior Member
2,741 posts Joined: Jan 2007
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QUOTE(zer0hour @ Nov 21 2008, 04:33 PM) Q9550 is limited to a maximum of 8.5 multiplier. Only Extreme Edition processors (among Intel procs) have completely unlocked multiplier. Hehe... Luckily me have QX9650 version. So, you must raise your FSB. Get better RAM, to reach 4Ghz for example you will need RAM that can reach DDR2-940.  But it only stable on 3.8GHz using Prime95 test. 1 core failed on 4GHz.  |
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Dec 30 2008, 03:24 PM
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Senior Member
3,175 posts Joined: May 2006
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Oh hi,
Please refer to the existing threads such as this: http://forum.lowyat.net/topic/773477 Thanks! *Thread Closed* |
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