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E7200 Batch #? 1.25V Max?

post #1 of 9
Thread Starter 
About 2 minutes ago my new PC stuff came, unfortunetly my power supply will be here monday, i was wondering how to tell if i got a good batch of e7200?

Also another note, you know how people say that 1.36?? volts is the limit for a e7200, on the box it says 1.25v max
Edited by Infinitegrim - 6/12/08 at 11:42am
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post #2 of 9
Thread Starter 
The batch # is Q813A450 Packed 5/21/08 S-Spec: SLAVN
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post #3 of 9
I just got mine as well a few days ago and its also SLAVN. There is 3 different vcore specs for all CPUs,

Box: 1.25v, absolute safe voltage that will not reduce life span what so ever as long as you are within thermal spec of 74c.

Max end of voltage range on Intel site: 1.3625v for 45nm, safe voltage that will not or very very little decrease life span as long as temps are within thermal spec. This can be found here: http://processorfinder.intel.com/det...px?sSpec=SLAVN

Absolute maximum (found only in .pdf documentation for E8xxx/E7xxx): 1.45v for 45nm, this is self explainatory, the absolute highest voltage or risk killing the processor in days if you go higher. When ran at the absolute maximum voltage 1.45v life span will decrease, but not an ZOMG O.O ammount. This can be found here: http://download.intel.com/design/pro...hts/318732.pdf

Unfortunately some people have killed these 45nm's with 1.45v or even any vcore above 1.40v, so its questionable. 1.36v is total safe 100%, if it still magically fried it would be due to a bad batch and not voltage.
     
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post #4 of 9
Thread Starter 
thanks for the info, do you know where i can find out if i got a good batch #. The reason i ask is because i have to wait for the PSU to arrive on monday. I live in PA, everything came from NJ, only 1 day shipping, but the PSU came from CA.

Also with the e7200 it seems you dont need to go ever 1.3v, as i've seen many get to 3.8 and 4.0 with a vcore under 1.3v
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post #5 of 9
There is no way to find a "good" batch #, mine is Q811A063 and I consider it a decent ~ good overclocking chip, whoever out there that has batch # Q811A064 could be experiencing a golden chip or it could be a lemon, or it could be an average overclocker, and thats as close to my batch # that anyone can get, obviously the only other one will be Q811A062 and the same rules apply to that as well. No way of telling untill you stick it in and hope.
     
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post #6 of 9
Quote:
Originally Posted by GigaByte View Post
Absolute maximum (found only in .pdf documentation for E8xxx/E7xxx): 1.45v for 45nm, this is self explainatory, the absolute highest voltage or risk killing the processor in days if you go higher. When ran at the absolute maximum voltage 1.45v life span will decrease, but not an ZOMG O.O ammount. This can be found here: http://download.intel.com/design/pro...hts/318732.pdf

Unfortunately some people have killed these 45nm's with 1.45v or even any vcore above 1.40v, so its questionable. 1.36v is total safe 100%, if it still magically fried it would be due to a bad batch and not voltage.
Umm... sorry to say but that is mostly rubbish. Firstly, nobody has killed a 45nm CPU with 1.45v. VTT, maybe. Vcore, no. If they have, then it was a defective chip that would have died prematurely anyway.

I have been running my Q9450 at 1.475v for close to 3 months now, and it has not degraded in the slightest. I have even ran suicide runs at 1.55v. They have been put under over 1.8v on ln2, and not died or degraded. The whole degradation scare with 45nm CPUs is severely overblown.

Now, they DO have a break in period of about a week when you first get the CPU, where the voltage required to remain stable will increase by around .1v, but after that, they sit like a rock. Break in periods where stable voltages shift are nothing new, either.
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post #7 of 9
Quote:
Originally Posted by 003 View Post
Umm... sorry to say but that is mostly rubbish. Firstly, nobody has killed a 45nm CPU with 1.45v. VTT, maybe. Vcore, no. If they have, then it was a defective chip that would have died prematurely anyway.

I have been running my Q9450 at 1.475v for close to 3 months now, and it has not degraded in the slightest. I have even ran suicide runs at 1.55v. They have been put under over 1.8v on ln2, and not died or degraded. The whole degradation scare with 45nm CPUs is severely overblown.

Now, they DO have a break in period of about a week when you first get the CPU, where the voltage required to remain stable will increase by around .1v, but after that, they sit like a rock. Break in periods where stable voltages shift are nothing new, either.
Many have killed them with 1.40v vcore and stock volt VTT, its luck of the draw which CPU will be able to tolerate higher volts for xxx period of time. Who knows I can set my vcore to 1.50v and it could last 4 years while another E7200 could drop dead in a month. I do know quads are very picky with VTT due to the interconnect between the dies and such, keep it low or stock and it should be fine but I was and am refering to vcore not VTT.

Sure I agree some are defective chips but having this many croak is fishy, having about half the 45nm CPUs coming off the line being faulty.. I just don't buy that. Something is killing them other than too high VTT.

About the break in period, thats new to me but I have heard bits and pieces about it. I had this E7200 for 4 days now and I keep priming it and its still coming back stable at 3.8Ghz 1.296v, the only thing that makes it fail is setting too low NB strap or RAM divider. Since I got into computers about 5 years ago I have not seen any effects of this so called burn in on a CPU or any component, not even to AS5. Perhaps its something new to the 45nm?
     
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post #8 of 9
Quote:
Originally Posted by Infinitegrim View Post
thanks for the info, do you know where i can find out if i got a good batch #. The reason i ask is because i have to wait for the PSU to arrive on monday. I live in PA, everything came from NJ, only 1 day shipping, but the PSU came from CA.

Also with the e7200 it seems you dont need to go ever 1.3v, as i've seen many get to 3.8 and 4.0 with a vcore under 1.3v
Look through here:

http://www.xtremesystems.org/forums/...d.php?t=187286
post #9 of 9
Quote:
Originally Posted by GigaByte View Post
Many have killed them with 1.40v vcore and stock volt VTT, its luck of the draw which CPU will be able to tolerate higher volts for xxx period of time. Who knows I can set my vcore to 1.50v and it could last 4 years while another E7200 could drop dead in a month. I do know quads are very picky with VTT due to the interconnect between the dies and such, keep it low or stock and it should be fine but I was and am refering to vcore not VTT.

Sure I agree some are defective chips but having this many croak is fishy, having about half the 45nm CPUs coming off the line being faulty.. I just don't buy that. Something is killing them other than too high VTT.

About the break in period, thats new to me but I have heard bits and pieces about it. I had this E7200 for 4 days now and I keep priming it and its still coming back stable at 3.8Ghz 1.296v, the only thing that makes it fail is setting too low NB strap or RAM divider. Since I got into computers about 5 years ago I have not seen any effects of this so called burn in on a CPU or any component, not even to AS5. Perhaps its something new to the 45nm?
So do you have any examples of Intel 45nm CPUs that have been killed by 1.4-1.45 vcore, and low VTT?
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