qx9650 voltage question

[arclite181]

I have a qx9650 and a thermalright 120 ultra heatsink. I am very happy with the temperatures 30-32C . So my question is: i wanna overclock my processor but i need more voltage >1.40 vcore ....do i worry about the voltage actually damaging my processor or the heat that is produced?. my temperatures reach about 36-37 C idle and 60-62 full load when i apply about 1.4125vcore. do i worry about the voltage or do i worry about the temperatures...which seem to be OK? Thank you

 

[Tempered81]

http://www.tomshardware.com/fo...quad-temperature-guide

higher voltage creates more heat. excessive voltage & temperature are both dangerous.

http://forums.anandtech.com/me...=2057083&enterthread=y

 

[daw123]

Originally posted by: jaredpace
http://www.tomshardware.com/fo...quad-temperature-guide

higher voltage creates more heat. excessive voltage & temperature are both dangerous.

http://forums.anandtech.com/me...=2057083&enterthread=y

I agree with jaredpace; you need to be carefull about both temperature and voltage.

Here is a link specifying tjunction for various 45nm chips:

http://www.anandtech.com/weblog/showpost.aspx?i=478

Obviously, temperature issues can be alleviated more easily than voltage by:
Using aftermarket HSFs;
Ensuring that there is good thermal contact between the HSF and CPU heatspreader by using correctly applied thermal paste (such as Artic Silver 5);
Good airflow through the case;
Using liquid cooling;
Using phase cooling;
etc.

As I understand it, putting a too high voltage through the CPU (VCore) will reduce its lifespan.

The type of chip determines what the max. VCore is, although it seems to be a general rule of thumb that VCore shouldn't be more than 1.4V.

I have a QX9770, and I won't be putting a Vcore through the CPU higher than 1.38V. That's will be my personal threshold, because I don't want to damage a $1000 CPU.

 

[soccerballtux]

in my understanding, 1.4v is the absolute max you should consider for a 45nm part. Not like the 65nms, they can take up to 1.55v imo with good cooling.

Volts are worse than temps, as long as temps are below 71C for your quad. (73.2 for my dual).

 

[daw123]

I know for the QX9770 (and it is the same for the QX9650) that the max safe working voltage specified by Intel is 1.3625V, so you may want to take this as the threshold.

Here is the Intel link for your CPU:
http://processorfinder.intel.c...tails.aspx?sSpec=SLAWN

At the end of the day, you need to determine for yourself what the maximum Vcore is that you are willing to put through the CPU.

We are just giving you advice and it is your chip after all. You may want to reduce the longevity of the CPU by going over the maximum just to gain the extra MHz.

 

[BTRY B 529th FA BN]

DON'T push the voltages

EDIT: why not change the multi to 9.5 or 9 with a 400fsb

 

[daw123]

Further to BTRY B 529th FA BN's post I am not advocating pushing the voltages.

I would recommend against it.

We have provided in our posts what we think are max. voltages for Vcore and I have even provided you with a link to what Intel specifies as the max safe voltage for your chip.

It is entirely your decision and you can increase speed via other avenues: increasing FSB, increasing the multiplier, etc.

You will find the speed that you want from your CPU by playing around with the variables. This doesn't mean that the Vcore has to be high.

 

[ThaJollyMan]

I would definitely agree with previous posters...dont go over 1.4v...i persoanlly wouldnt go over recommended specs. You should be able to hit 4ghz with an unlocked mulitplier and not exceeding 1.4v. This guy is at 3.6ghz @ 1.288v.

http://www.evga.com/community/...comment.asp?sysid=8004

Shoot, i hit 3.4 ghz @ 1.3v with a locked 8x multiplier. Dont take the risk of killing $1000 cpu for couple hundred mhz. In the long run a couple of hundred mhz isnt going to matter for gaming or whatever your using it for.

What are your current voltage settings in BIOS and current clock speed? My q9450 doesnt exceed 55*c(45*c with RealTemp) at full load. The lower your voltages the less you heat you will have. When you find a stable overclock you want to lower your voltages just enough so that your OC remains stable but also so you reduce your heat output.

 

[BTRY B 529th FA BN]

If its for gaming and you want more fps, go for another vid card (CF/SLI)

 

[ThaJollyMan]

Originally posted by: BTRY B 529th FA BN
If its for gaming and you want more fps, go for another vid card (CF/SLI)

Agreed!

 

[arclite181]

Thank you all so much for the help. I looked at all the links sent to me and messed around with the multiplier and and fsb and now i am stable at 4.0ghz with a vcore of 1.35. Thanks again