Intel CPU's maximum voltages and temps! - Page 2 - Overclock.net

Cryptedvick · 03-06-09

im really curious on the q6600 as well

Blameless · 03-06-09

There are a few main problems I see with a list like this:

1. The voltages listed are the absolute max limits, intended to be survivable for very short periods of time only. Running at these voltages all the time is almost guaranteed to cut the life of a CPU dramatically, unless you can keep the chip very cold.

Without subambient cooling, 1.55v is not even close to a 24/7 viable voltage for an i7.

The VID range is a better guidline for most. Also, VID assumes that voffset and vdroop are going to be present at intel specs, remove them and the voltage spikes are going to greatly exceed the VID you set.

2. The temperatures listed are TCASE (the temperature of the center top of the IHS), and TCASE has nothing to do with the temperatures read by any DTS monitoring program. TCASE max is a much lower number than tjmax.

3. Relating to the above two, these lists are taken out of context. Without a good understanding of all the terms used and the implications of each, these number are very misleading.

GigaByte · 03-06-09

Q(X)6xxx, OP has permission to use my screenshot.

stargate125645 · 03-06-09

Quote:

Originally Posted by DuckieHo

It just might be too much information if someone is not familar how to read spec sheets.

That, and there are references to tables and figures that are not included.

DeadSkull · 03-06-09

How much would 1.4Vcore degrade the lifetime of my Q9650?

PizzaMan · 03-06-09

Updated thread with all the QX6000 and Q6000 series info as requested.

Also added this note to OP:

Quote:

All chips are NOT created equal!
All written limitations should be taken with a grain of salt. Some chips might be able to handle these limitations and some might fall short. As most know, each chip will not OC or handle voltage the same. What I take from the below specs is that Intel used components on their chips that are rated to handle the specs listed. Though, not all components live up to their rated maximums. Intel is just stating that the risk of damaging will increase the closer you get to these limitations and going over these specs will almost guaranty a degrading chip. How close you decide to get to these points is up to the overclocker. I know there are many here who like to push the limits on their chips for 24/7 usage and this info is for them. The rest who wish to keep their chips alive for many years of use would probably be better sticking to VID as your limitation.

ericeod · 03-07-09

I do not see a source link anywhere in the thread. It needs to be included, and I recommend adding the warnings about the "Absolute Maximum Voltages".

PizzaMan · 03-07-09

Quote:

Originally Posted by ericeod

I do not see a source link anywhere in the thread. It needs to be included, and I recommend adding the warnings about the "Absolute Maximum Voltages".

Added source link: http://www.intel.com/design/

My previous note should cover warnings about getting close to absolute maximums.

zooterboy · 03-08-09

This has been posted about numerous times on OCN. Intel deliberately is enigmatic about limits so they don't get sued. Anything between the max VID and the absolute max is going to degrade your processor, it says it right in the source. Meaning, with a Q9550, over 1.3625 and under 1.45 will degrade life expectancy. Over 1.45 and you'll be lucky if it ever works again.

Quote:

Originally Posted by DeadSkull

How much would 1.4Vcore degrade the lifetime of my Q9650?

There's no way to tell. There are too many variables involved, including what temperature the processor would run with that voltage. The higher the temps, the lower the longevity; but anything over the VID max of 1.3625 WILL reduce the life of the processor.

gurusan · 03-08-09

Quote:

Originally Posted by zooterboy

T Over 1.45 and you'll be lucky if it ever works again.

LOL! I've put 1.65V through my E8500 for benching and I just primed it for 10.5 hours the other day 4.5ghz 1.360V stable. Degraded? I think not.

Just use common sense people, I've ran around 1.41-1.42V on my CPU 24/7 for quite awhile now with no issues. Now that I've found the "sweet spot" in terms of voltage I'll probably just stay at 4.5ghz 1.36V since it requires so much more (1.42v) for just a 200mhz gain to 4.7ghz

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Intel CPU's maximum voltages and temps!

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