OCing QX9650

[bharatwaja]

I am currently running prime 95 with a 11X333 setting...

Is it better to increase the FSB or the multiplier???

 

[Idontcare]

I do not have a QX9650...but I do have a QX6700 and I have wrestled with this same question.

To be sure it is easier on the rest of your system if you leave the FSB (and MCH) at stock and just stress your CPU as you raise the multiplier.

Graysky had a nice thread showing some real-world application speedups (or lack thereof) from increasing FSB and memory speeds.

http://forums.anandtech.com/me...key=y&keyword1=graysky

I think it is fair to say that most overclockers don't mind that increasing the FSB results in the opportunity of realizing improved performance from the increased memory bandwidth, but I think most folks would prefer to have multiplier unlocked chips if they were the same price so they could avoid risking premature degradation/death of their motherboards, etc.

At the end of the day with my QX6700 which I could run on FSB anywhere between 266 to 400 I ended up just leaving it at stock FSB (266) and upping the multiplier and Vcore. System is far more stable and happy for daily 24x7 use in my case.

 

[bharatwaja]

My QX9650 is running way too hot... it has gone upto 92C on all cores using core temp while doing a 11X333 OC.... what might be the problem? or is it the way things are? Rig in Sig....

 

[PCTC2]

what HSF/cooler are you using on your QX?

 

[bharatwaja]

Stock cooling....

 

[bharatwaja]

Also, what is the max temp that My cpu can safely work under??

As per my original question... shouldnt OCing the FSB be more performance wise better as the RAM too is running faster??

 

[GuitarDaddy]

Originally posted by: bharatwaja
Also, what is the max temp that My cpu can safely work under??

It won't actually shut down until around 100c, but anything over 70c is too hot IMO. You definately need better cooling if your hitting 90c

As per my original question... shouldnt OCing the FSB be more performance wise better as the RAM too is running faster??

Yes, but the minimal improvements aren't worth the extra stress on mobo and ram

 

[Idontcare]

Originally posted by: bharatwaja
Stock cooling....

Consider throwing another $50 at a Tuniq Tower 120Tuniq Tower 120 or equivalent tier1 cooling solution. You spent the cash on a QX9650, hate to have that thing depreciating while leaving performance on the table because you are using a $20 stock HSF.

Get some TX-2 or equivalent thermal paste while you are at it, stock TIM is not all that great.
http://www.madshrimps.be/?action=getarticle&articID=635

 

[bharatwaja]

Ya ya, am gonna do that.... I am thinkin of getting the Thermalright Ultra 120 extreme.... and TX2... how is this?

 

[Tempered81]

Originally posted by: bharatwaja
Ya ya, am gonna do that.... I am thinkin of getting the Thermalright Ultra 120 extreme.... and TX2... how is this?

the TRUE is about the best air cooler there is

 

[bharatwaja]

Then I would jus go ahead and place the order for it now.... does it come with one fan included in the package? I jus cant seem to find that anywhere... can someone gimme a link in newegg with a good price??? cause I dont know how much price this thing is... (first time buying an aftermarket cooler....)

 

[Tempered81]

doesn't come with a fan. go ahead and ante up for 2 good 120mm fans and an extra set of thermalright ultra 120 fan clips.

You should also have a 120 or 92mm exhaust fan at the rear of your case.


This will give you plenty of headroom for OCing.

check froogle.com

 

[RussianSensation]

http://www.svc.com/ultra-120-extreme.html , you can also buy fans here
http://www.heatsinkfactory.com...pu-cooler-p-16580.html

 

[Idontcare]

Be aware there are a fair number of posters who report the TRUE is unacceptably non-flat.

You are best to checkout the Cases and Cooling forum here. I have never owned one so I can't verify.

There was a website vendor who was selling TRUE which were already lapped for something around an extra $20.

Ah, found the link - http://www.crazypc.com/product...120_extreme-50983.html

 

[The-Noid]

imo the TRUE works best with only a single fan in push.

Push/Pull actually bring temps up for me and a few others.

 

[bharatwaja]

by TRUE u mean, Thermal Right Ultra 120 Extreme?
sorry for that, but very new to this...

Also, I set my CPU voltage to 1.15 but in CPU Z it shows jus 1.12.... why is this???

 

[PCTC2]

vDroop. It's a standard specification of all motherboards. It's so, when you computer switches from full load to zero load very quickly, the resulting voltage spike due to the delay from the PWM circuity doesn't go above the set voltage. At full load, your processor draws more amperage, so the wattage increases at said voltage. But when it switches to zero load very quickly, the PWM circuitry doesn't have enough time to react instantaneously so there is a voltage spike from the decreased amperage but constant wattage. Then the PWM regulates wattage. At stock, it's so the voltage never goes above VID.