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help with voltages... is 1.5250 for a q6600 on an 680i LT dangerous 24/7???

post #1 of 7
Thread Starter 
Good Day:

I am hearing conflicting information and can use your opinions.

I am running my q6600 on my 680i LT SLI mobo at 1.5250 vcore in bios which reads as 1.49-1.50 idle in CPU-Z. Under 100% load in prime95 vdroop to 1.46.

I never max out above 61C during a stability test. I have a liquid cooling system that keeps everything nice and cool.

Am I endanger in shortening the lifespan of my cpu by running at this voltage? Because of the board I am force to up voltages tremendously to get an overclock above 3.0. At 1.5250 I can max out at 3.28.

I know that at high voltages ion migration (or whatever) can be an issue over time.

Do I have anything to worry about with this setting? Should I drop it down to 1.30 and 3.0 GHZ again or am I safe?

Inquiring Minds Want to Know!

Thanks in advance.
post #2 of 7
I'm in the same boat, I need to do some mods to my Mars .
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post #3 of 7
Voltage causes heat and electromigration. heat is obvious as we all try to use some form of extreme cooling to compensate. EM is unpreventable and there is no real way of monitoring it. Intel does extensive testing with their CPU's to determine the average life span of a CPU. They offer a 3 year warranty and determined that, on average, if you keep the CPU between said voltages and said temps, your processor is likely to live throughout the warranty period.

Since heat isn't a factor in your case, the only other downfall of high voltage is EM. Since there is no way of knowing the extent of EM or how long that particular CPU will last at said voltage, all you can do is speculate. persoanlly, I am fine running my CPU's up to 1.55v or so. I have known many that have gone up to 1.7v for months on end with no problems. The 65nm CPU's are not like the 45nm cousins who can die from higher voltages well before temps become an issue. I assume that this is due to the smaller die and the fragility of the cores.

So, there is no real way to answer that question. All you can do is go by what others have done in the past and extrapolate out Intels findings. (as in, if I operate said CPU at 1.35v and it is good for 3 years on average, I can expect it to last 1.7 years at 1.55v etc.)

If your temps are in line, my advice is to go a bit higher. I personally wouldn't run it 24/7 over 1.575, but I have no real basis for that. Just a feeling, lol.
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post #4 of 7
Thread Starter 
well stated response dralb. I appreciate it more than you know.
post #5 of 7
The life would go down, that's common sense, but if you have the money, then might as well run at that voltage, otherwise keep it under 1.50V just for safety, and i find it pointless to go above 1.5V for anything higher than 3.6 Ghz anyways, if you want to see higher GHz, i'd go for the q6700 for its 10x multiplier, otherwise i keep a q6600 at 1.5v at whatever stable Ghz o_o
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post #6 of 7
Quote:
Originally Posted by xtacized View Post
The life would go down, that's common sense, but if you have the money, then might as well run at that voltage, otherwise keep it under 1.50V just for safety, and i find it pointless to go above 1.5V for anything higher than 3.6 Ghz anyways, if you want to see higher GHz, i'd go for the q6700 for its 10x multiplier, otherwise i keep a q6600 at 1.5v at whatever stable Ghz o_o
Contrary to popular belief, higher multi does not mean higher OC assuming the mobo/RAM is capable of higher FSB speeds. The Q6700 may be a better overclocker, but it is for other reasons. (better silicon, higher bin etc.) Even then, the newer Q's are not as good as the older ones, so even a Q6700 may not be the best choice.
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post #7 of 7
Quote:
Originally Posted by dralb View Post
Contrary to popular belief, higher multi does not mean higher OC assuming the mobo/RAM is capable of higher FSB speeds. The Q6700 may be a better overclocker, but it is for other reasons. (better silicon, higher bin etc.) Even then, the newer Q's are not as good as the older ones, so even a Q6700 may not be the best choice.
to me the q6700 is a good choice, my friend;s q6700 is currently running 3.8ghz without going over 1.5v, he havent done any stability test yet, but he never had BSOD playing games o_o
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Seagate 300GB// Sata 3.0 [Raptor X on the way!] Window XP SP2 32Bit [64bit soon!] 21.6' Samsung 216BW G11 
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Xtasy's System
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Q6700 @ 3.8 ghz // 1.46 vCore 24/7 Evga nForce 780i SLI w/ PencilMod BFG GTX260 4GB Dominator's @ 4/4/4/8-1T, 1066mhz. 
Hard DriveOSMonitorKeyboard
Seagate 300GB// Sata 3.0 [Raptor X on the way!] Window XP SP2 32Bit [64bit soon!] 21.6' Samsung 216BW G11 
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