Yet Another Q9550 OC Thread

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Cookie Monster

Diamond Member
May 7, 2005
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Originally posted by: Dadofamunky
What I'm curious about is how swapping out a 4+ GHz OCed dual chip (like mine) for a 3.6-3.7 GHz Q9550 could lose you any performance. To my mind, particularly in the workloads I do, the small drop in clock speed would be more than made up in lower latency when running a lot of tasks. My system's plenty fast and runs like a tank, but I still get mouse freezes every so often (usually I/O driven) that take the system 5-10 seconds to recover from. Nary a crash, just odd hesitations once in awhile when I have DVD/BluRay playing and I run things like a long download along with Skype and 30-40 browser tabs. So I'm taking a hard look at getting a 9550. I don't think the clock speed matters all that much past a certain point.

Same reason why im seriously considering a Q9550 as well.

Along with a X25-M :p
 

Elias824

Golden Member
Mar 13, 2007
1,100
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ive looked through a few reviews on this board and ive seen people get it up to 2ghz fsb. But they had their dram volts at like +.6v, its abit nuts. I havent played with my fsb voltage but yeah I cant get any higher without bus issues. Im sure we could go higher but I would prefer not to blow up anything that I can avoid. I still have everything else on auto as well. Didnt realize how low of a multiplier these things had, lousy intel.
 

NaOH

Diamond Member
Mar 2, 2006
5,015
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Originally posted by: Elias824
ive looked through a few reviews on this board and ive seen people get it up to 2ghz fsb. But they had their dram volts at like +.6v, its abit nuts. I havent played with my fsb voltage but yeah I cant get any higher without bus issues. Im sure we could go higher but I would prefer not to blow up anything that I can avoid. I still have everything else on auto as well. Didnt realize how low of a multiplier these things had, lousy intel.

Hmm, I'll try that. I have been keeping my dram volts at just +.3 since that keeps my ram in spec at 2.1v. We'll see how it goes once I start bumping it up.
 

elconejito

Senior member
Dec 19, 2007
607
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www.harvsworld.com
Originally posted by: NaOH
Originally posted by: elconejito
it's possible you got a gimpy CPU, they aren't all made the same. I'm not familiar with that board, what other voltage settings do you have available (pressing Crtl+F1 at the main BIOS screen may give you more options) and what do you have them set to so far.

I've messed around with the NB volt and FSB voltages but the NB voltages doesn't seem to do much. I have the FSB voltages to +2 (out of 3), nothing for the NB (I tried adjusting this, but still doesn't boot into windows). I haven't tried pressing ctrl+F1 but I don't see anything that would lead me to believe there are extra options.

I meant what other voltages do you have avavilable to change other than vcore, FSB and NB?

On many boards, pressing Ctrl+F1 will show more options. It might be a different keystroke combination, but it's usually Crtl+F1. Overclocking quads is a lot harder than dual cores.
 

smackababy

Lifer
Oct 30, 2008
27,024
79
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I was able to get my Q9550 to 3.82ghz with just uping the vcore to like 1.26. I think you might have gotten a bad chip. I had to do some tweaking and tuning to get to 4.0, but hitting 3.8 was a breeze. I might have gotten a great chip, but who knows?
 

NaOH

Diamond Member
Mar 2, 2006
5,015
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Originally posted by: elconejito
Originally posted by: NaOH
Originally posted by: elconejito
it's possible you got a gimpy CPU, they aren't all made the same. I'm not familiar with that board, what other voltage settings do you have available (pressing Crtl+F1 at the main BIOS screen may give you more options) and what do you have them set to so far.

I've messed around with the NB volt and FSB voltages but the NB voltages doesn't seem to do much. I have the FSB voltages to +2 (out of 3), nothing for the NB (I tried adjusting this, but still doesn't boot into windows). I haven't tried pressing ctrl+F1 but I don't see anything that would lead me to believe there are extra options.

I meant what other voltages do you have avavilable to change other than vcore, FSB and NB?

On many boards, pressing Ctrl+F1 will show more options. It might be a different keystroke combination, but it's usually Crtl+F1. Overclocking quads is a lot harder than dual cores.

That's all I have to change.
 

elconejito

Senior member
Dec 19, 2007
607
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www.harvsworld.com
well, that kinda stifles creativity then doesn't it?

Does it tell you what the default values are? So when you go +2 or +3 how do you know what it actually is?

Kinda for reference (take with a grain of salt since my board and chip are different) vcore is 1.3125, CPU Termination (I suspect this is your FSB volts) is 1.3, MCH is 1.34. My default for CPU Term and MCH were 1.1, so adding +.2 or +.3 to each would probably do the trick. But I don't know what your default values are....
 
Jul 10, 2007
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Originally posted by: KingstonU
Going from 3.6 to 3.7 on my C1 stepping 9550 with P45 P5Q-Pro took a lot more volts so I leave it at 3.6GHz.

what temps are you getting with the vendetta 2?
my room temps are about 78-80, and my idle temps on my Q9550 E0 @ 3.4Ghz (400 x 8.5 @ stock voltage) is low - mid 40C, about 60C at 100% load according to RealTemp with TJMax set to 100.
 

Elias824

Golden Member
Mar 13, 2007
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so I tested out +.5v, (default is 1.8), so that would be 2.3, +.3v on fsb and mch ( dont know the default for this). Dropped my cpu multi to x7, and tried 450 bus. I played far cry for about 2min before it locked up on me still. I dont think its possible to go much higher then 3.7 on these boards. Ive seen reviews of people doing 2ghz on the bus but that was with a dual core, so maybe this board just hates quads or somthing. Well id love to buy a new board but its abit hard to justify for at most maybe 200mhz for me. Also cpu-z reports the voltage for me at 1.25? its usually different from what you set in the bios but thats pretty far off, not sure what that is about. Im set 1.35v in my bios.
 

Elias824

Golden Member
Mar 13, 2007
1,100
0
76
lol no im not running my ram 1:1, its at 872mhz running at a 2 multiplier buts its ddr2 1000. ill probably toy around with my memory if I can get my bus/cpu stable first

updated my sig finally.