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why do I need such high voltage???

D

dowright82

n00b
Joined
May 10, 2007
Messages
26
I've posted my history of OC'ing my E6600 and Gigabyte P35-DS3R

I've got it running stable @ 3.41 or 9x387

but for some reason, unless I give it 1.56 vCore, I get BSOD after 10 min of ORTHOS.

now, with VDROOP, everest shows me to be getting 1.5 to it under load.

temps in a 23C room are MAXED at 61C and a now 25.5C room at 63C

any thoughts??
 
er, hmmm, ahhh, because Intel did not design it to run that fast with stock voltages ?

Be careful, its like running a car engine with a turbo charger, you raise the boost too much and you either burn a hole in the piston or blow the heads off. You are killing your CPU for the sake of 3.2GHz vs 3.4GHz. Some CPUs overclock better than others. . Voltage stress on the transistor junctions is what can kill a c2d. If it gets too hot it will just shut down and save itself. It does not have an ability to protect itself from over voltage. Do not let people who do "suicide runs" to post some high overclock lead you into destroying your CPU. Course they are not all that expensive and its your stuff, do what you want

You seem to have some idea that as long as the temps are reasonable you can just keep on going, it doesn't work that way, unfortunately.
 
BillParrish said:
er, hmmm, ahhh, because Intel did not design it to run that fast with stock voltages ?

Be careful, its like running a car engine with a turbo charger, you raise the boost too much and you either burn a hole in the piston or blow the heads off. You are killing your CPU for the sake of 3.2GHz vs 3.4GHz. Some CPUs overclock better than others. . Voltage stress on the transistor junctions is what can kill a c2d. If it gets too hot it will just shut down and save itself. It does not have an ability to protect itself from over voltage. Do not let people who do "suicide runs" to post some high overclock lead you into destroying your CPU. Course they are not all that expensive and its your stuff, do what you want

You seem to have some idea that as long as the temps are reasonable you can just keep on going, it doesn't work that way, unfortunately.
Click to expand...

QFT, pretty much. Overvolting to extremes is almost always a bad plan.
 
even though in EVEREST it only shows 1.54v??

And my temps truly are within reasonable range, right??

If I'm wrong, say so!! please! thats why I'm asking, I just thought that perhaps its strange that I have to put it so high in my bios and i'm losing a LOT to VDROOP - is it because I have my CPU fan plugged into the motherboard, instead of to the powersupply??

everest reads 1.54, bios is like 1.576

temps max out within range . . .

talk to me some more about this please . . . should I say screw it and go down to a 3.2??
 
every chip is going to clock differently. You're pushing it too far. Either try a new cpu, or settle for a slower stable speed.
 
That's really not /that/ much vdroop, it's pretty typical for a non voltmodded board, from what I've seen. Also, software isn't always right, so... eh.
 
1.56V at 63C. have fun making a keychain :rolleyes:

Get some real cooling on that cpu, fast.
 
is there EVEN one person on this forum that had a core 2 duo die due to overclocking? high voltage or high temp?
 
What would you guys say is "too far" for voltage on a C2D? That is, what's the highest voltage you'd feel comfortable using while expecting the CPU to last a while?
 
calvieee said:
is there EVEN one person on this forum that had a core 2 duo die due to overclocking? high voltage or high temp?
Click to expand...

Yes. Check the E6420 OCing thread. Don't remember the guy's handle, but it's been in the last few pages I saw it.
 
dandragonrage said:
What would you guys say is "too far" for voltage on a C2D? That is, what's the highest voltage you'd feel comfortable using while expecting the CPU to last a while?
Click to expand...

I saw someone kill one in the E6420 thread with a little more than 1.6 vcore according to software, so I'd certainly keep it below 1.5 vcore, personally.
 
You usually want around 1.4
Much higher and your CPU will wear out significantly over time.

I should mention that my e4300 is at 1.4 volts and loads at about 70C with orthos.
But it is overclocked to 3.1Ghz cooled by an AC Freezer 7 Pro.
 
mwarps said:
1.56V at 63C. have fun making a keychain :rolleyes:

Get some real cooling on that cpu, fast.
Click to expand...

What's wrong with 63C? I wish I could get 63C under load at 1.56V because if I could I'd go straight to 400x9 and maybe higher :D. And besides, since when does a game actually get temperatures as high as Orthos load does?

1.5V is the highest I'd feel comfortable taking it in the BIOS, and vdroop would take me down anywhere from 1.42V-1.44V under load.
 
well, you guys have slightly scared me now.

I'm running an Arctic Cooler Pro 7 - which is currently plugged into my MOTHERBOARD. . . . wondering if I should plug it in to my PSU

From what I understood, especially based on the "OVERCLOCK CHART" I saw - 1.56v isn't a terribly large amount, as long as temps hovered under 72-72C

well I felt safe that I was running mine much cooler than 72C. like I said, with VDROOP, I was looking at about 1.5v even.
-------------------

Since I'm scared now, I'm running at 8x400 @ 1.41v maxing at about 50C under full ORTHOS load for 3 hrs.
 
dowright82 said:
well, you guys have slightly scared me now.

I'm running an Arctic Cooler Pro 7 - which is currently plugged into my MOTHERBOARD. . . . wondering if I should plug it in to my PSU

From what I understood, especially based on the "OVERCLOCK CHART" I saw - 1.56v isn't a terribly large amount, as long as temps hovered under 72-72C

well I felt safe that I was running mine much cooler than 72C. like I said, with VDROOP, I was looking at about 1.5v even.
-------------------

Since I'm scared now, I'm running at 8x400 @ 1.41v maxing at about 50C under full ORTHOS load for 3 hrs.
Click to expand...

I wish I could hit 50C under full load... More like 57C for me. You must have one of the older run E6600's?
 
even though in EVEREST it only shows 1.54v??
Click to expand...

What do you think IS a high voltage ? /amazed.

Stock voltage as determined by Intel for long life and reliability is somewhere around 1.35 Volts (not sure on the newer ones but thats close).

Absolute max Vcore per intel datasheet is 1.55 volts. What that means is that if you go over, no warranty, and Intel says its best (from c2d Intel datasheet, bold is mine) :

Table 4 specifies absolute maximum and minimum ratings only and lie outside the
functional limits of the processor. Within functional operation limits, functionality and
long-term reliability can be expected.

At conditions outside functional operation condition limits, but within absolute
maximum and minimum ratings, neither functionality nor long-term reliability can be
expected. If a device is returned to conditions within functional operation limits after
having been subjected to conditions outside these limits, but within the absolute
maximum and minimum ratings, the device may be functional, but with its lifetime
degraded depending on exposure to conditions exceeding the functional operation
condition limits.

At conditions exceeding absolute maximum and minimum ratings, neither functionality
nor long-term reliability can be expected. Moreover, if a device is subjected to these
conditions for any length of time then, when returned to conditions within the
functional operating condition limits, it will either not function, or its reliability will be
severely degraded.


Table 4 does not paste well but frankly I dont think anyone who does not have a copy of the datasheet in their my documents folder shouldnt be OCing anyway :p


Absolute Maximum and Minimum Ratings
Symbol Parameter Min Max Unit Notes1, 2
NOTES:
1. For functional operation, all processor electrical, signal quality, mechanical and thermal
specifications must be satisfied.
2. Excessive overshoot or undershoot on any signal will likely result in permanent damage to the
processor.
VCC Core voltage with respect to VSS –0.3 1.55 V -
VTT
FSB termination voltage with
respect to VSS
–0.3 1.55 V -
TC Processor case temperature
See
Chapter 5
See
Chapter 5
°C -
TSTORAGE Processor storage temperature –40 85 °C 3, 4, 5
3. Storage temperature is applicable to storage conditions only. In this scenario, the processor must
not receive a clock, and no lands can be connected to a voltage bias. Storage within these limits
will not affect the long-term reliability of the device. For functional operation, refer to the
processor case temperature specifications.
4. This rating applies to the processor and does not include any tray or packaging.
5. Failure to adhere to this specification can affect the long term reliability of the processor.


http://www.intel.com/design/core2duo/documentation.htm


Just in case , you are outside of functional limits and so close to absolute max its not funny.
 
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