Nehalem is a 4-core vs a dual core CPU...we're talking about dissipating the heat produced by 710 million versus 410 million transistors, and at a voltage far above design operating voltage. The increase in heat produced with a voltage increase is a law of squares function, and heat conduction from the larger number of devices across a more complex physical geometry makes this anything but the apples-to-apples comparison you suggest.

CPU temperatures do not raise so drastically in such a short period of time unless faulty cooling is involved.

A "simple over voltage," as you put it, will indeed cause a CPU to exceed it's TDP...that's basic physics. Any i7 running at 4 Ghz is already pushed up past its TDP.

Yeah, it is basic physics. The HSF is installed incorrectly and the base of the heatsink is not making proper contact with the CPU IHS and thus not dissipating the thermal output of the CPU.

But there's no shortage of people calling themselves PC technicians with nothing more than high school educations (or even less) and little to no education or training. Many folks may not realize that quite often the tech in the back room d*cking around with their expensive PC doesn't know the most rudimentary basics of electronics, and couldn't explain the most basic relationships between between power, EMF, current, and resistance/impedance. That's not specifically aimed at anyone in particular. Just an observation after many visits to many computer shops around the world.

Please. You call into question my professional experience because I dare to disagree with you in an online discussion? I have better things to do with my time than get into a pissing match with some keyboard jockey.

so take that into account.,.. push CPU to 1.48 and QPI into the 1.65v range and you are overheating due to voltage... that must be addressed FIRST.. then any assesment of HSF installation, not before.

You suggest addressing over-voltage before checking for proper heatsink installation? There's not a competent tech in the world that would agree with you. OP: do the smart thing and check that heatsink! Make sure the plastic film was removed, make sure the heatsink base is making proper contact with the CPU IHS, make sure thermal paste is present in the proper amount, and make sure the fan is plugged in and operational.At that I am done with this thread.

Nick_ N is hardly a keyboard jockey...Many techs I know also concer that his voltage is to high..many of them are extreme Overclockers and test for a living...

Lets just back away from the keyboard and take a deep breathI already stated at the beginning of this thread the builder appeared to be incompetent. I also quite clearly stated the heatsink involved would require a complete nincompoop to get it bolted down wrong, and, I said there may be issues around thatHoweverthe first order of business instead of ripping a motherboard out of a tower to inspect the heatsink mount which is required to check the V8 is to get the voltages INTO Intel SPEC FIRST. From there an evaluation of the temps may lead to further diagnostics however to tell someone their heatsink is not mounted correctly and NOT suggest getting the system back in line to correct Intel voltage and setting prior to a correct temp inspection is a bit off. First things first in correct diagnostics and there is no reason to argue about it either as anyone who is experienced knows thatThis is not about 'making the right call' with an internet diagnosis.. this is about getting someone to a point where the right call can be made! an excessively high QPI voltage with high vcore approaching terminal on a cooler such as the CM v8 especially with HT enabled can most certainly drive that temp up to 70c idle but until that motherboard is returned to default and auto setting (already posted in another thread before I posted the first time HERE MAX) or getting the system into a place where an experienced call on voltages will present a CLUE if the temps are still out of line... an evaluation of temps is not possible. Past that is differentand just so everyone knows.. I have Lynn covered in another thread in another forum. We have already discussed all this. The system needs to go to a experienced tech who understands the EVGA BIOS and can translate the correct settings posted for the Asus P6T to the EVGA system... and then an inspection of the build may ensue......

CPU temperatures do not raise so drastically in such a short period of time unless faulty cooling is involved.

A CPU temp delta of 30-40 deg from idle to full load does indeed happen quickly. It's common for quad-core systems to idle at 35-40 deg and hit their load temps at 70-80 deg in 15-30 sec after loading up the cores. In this case, he's idling at 70+ (way high) with peak at 100.

Please. You call into question my professional experience because I dare to disagree with you in an online discussion? I have better things to do with my time than get into a pissing match with some keyboard jockey.

I said there are lots of PC techs without any formal education or training that just don't know what they're doing. I was thinking maybe that describes the guy that built the OP's system. And though the remark wasn't aimed at you and I said as much, your defensive reaction and name-calling suggest I might have hit close to home. Too many "PC techs" are paid hobbyists that have never had any formal training, and have never had to take an exam or otherwise get certified on basic electronics, circuit design, or technology.

You suggest addressing over-voltage before checking for proper heatsink installation? There's not a competent tech in the world that would agree with you.

Dropping the voltage in the BIOS is an easy first step (and a necessary one with those temps)...who would really rather open the case, disconnect half the cabling, yank the mobo and pull off the HSF first before checking voltages? I know two people using the Coolermaster V8 HSF. Neither was able to get above 3.8 GHz with comfortable temps, and neither is running anywhere near 1.48v. So were it me...yes I'd get the Vcore down to something in line with what other users are reporting and start from there. My gut feel is the "tech" involved just pushed up the voltage until it ran, temperatures be damned.And to piggyback on something Nick hits on, high QPI voltage is more than a little dangerous, because the thermal sensors on the i7 are far enough away from the IMC/QPI (the sensors are at the cores) that you really don't know just how hot the support circuitry is getting--and there's no thermal overload protection to save you there.RegardsBob ScottColonel, USAF (ret)ATP IMEL Gulfstream II-III-IV-VColorado Springs, CO

You suggest addressing over-voltage before checking for proper heatsink installation? There's not a competent tech in the world that would agree with you.

QUOTE FROM NICKN to Lynn in another forum before posting the 1st time here

-------------->Voltage Vcore 1.48VI think you have something wrong there.. I never posted that kind of voltage for i7Where on gods earth did you get that voltage from?75c IDLE?You best get that BIOS set back to default because that temp is NOT safeRight now you have hit the 100c limit on the processor and you are lucky to even have a processor.. I mean that!Even after I post the right settings, the Coolmaster V8 may not be able to handle a full on 4GHz clock with i7.. I do not have time to post it tonight but I will try and get a BIOS list posted tomorrow. Right now you need to get that BIOS set BACK to default before you lose a 1000$ processor

There's not a competent tech in the world who would shoot off his/her mouth before ASKING QUESTIONS, addressing the voltages, asking about the TOWER IN USE, asking about the AIRFLOW in the tower and then going from thereand a matter of fact Max a competent tech would have recognized this person did not belong in a system clocking right off the bat with the first post and suggested this system needs to go TO a competent tech!Quote from NickN to Lynn

the bottom line with this is you need to take that list above and get it to someone who works with the EVGA boards and knows/understands the differences.. most likely they will have a different method of calculating QPI voltage which is QPI/DRAM on the Asus boards. They may also handle UCLK Frequency a bit different as in they may ask for a multiplier instead of a strait frequency value.But none the less, the settings I posted above will be the equivalents to the correct values on the EVGA board.You wont know if there is a problem in that area until eveything else is in place settings wise. I would say off the top of my head the CM v8 will probably do 3.8GHz @ somewhere around 1.28 to 1.35v CPU Voltage and run just under 80c. If you are still seeing excessive temps after eveything is set up correctly then the person checking it out needs to look further at not only the heatsink/install but the airflow in the tower too.. i7 needs a good tower to breathe and cool off

but since you brought it up... Regardless of your knowledge of another conversation or NOT.. the suggestion someone who has in their first post identified a BUILDER instead of themselves has put a system together, .. rip a motherboard/HSF out of their tower before performing basic: triage, setup and verification

Please. You call into question my professional experience because I dare to disagree with you in an online discussion? I have better things to do with my time than get into a pissing match with some keyboard jockey.You suggest addressing over-voltage before checking for proper heatsink installation? There's not a competent tech in the world that would agree with you.

Nothing I posted was a

This is the last post I shall make in this thread until the original poster decides to take some corrective actions and post them here with results.In response to Nick & Bob:I won't be drawn into your ego-stroking flamewar. My hypothesis is entirely correct and I expect it to be proven so when the OP gets around to it.In the meantime, you could always ask some Electrical Engineers that build microprocessors (and various ASICs) for a living at RealWorldTech.

This is the last post I shall make in this thread until the original poster decides to take some corrective actions and post them here with results.In response to Nick & Bob:I won't be drawn into your ego-stroking flamewar. My hypothesis is entirely correct and I expect it to be proven so when the OP gets around to it.In the meantime, you could always ask some Electrical Engineers that build microprocessors (and various ASICs) for a living at RealWorldTech.

I don

One other thing Max.. There have been many times when I will make suggestions and include a disclaimer that those suggestions come from my experience but since what I am posting is an internet diagnosis it may require the user expand on those suggestions to find the problem. A good tech can only go by what people report in a problem/issue and what they have done to fix the problem on their end. There are times when their description(s) leave out a small but critical piece of information or there can be a rare issue involved such as a programming error in SPD information with the memory product in use which can lead to a costly misdiagnosis even with a good tech on the other end. A competent tech realizes that and never arrogantly assumes they know exactly what is wrong without following proper diagnostic routines and without letting the person on the other end know (without an ego) the suggestion made may not be correct because it is in fact a internet diagnosis. .....

Hello,I have been trying to get this resolved as soon as possible because I never wanted to do anything but have a fast reliable FSX machine. Not be a builder. I am using all this info plus reading Simvation, extreme overclocking website, etc. to work in the BIOS to try to learn enough to know what a builder tells me and to intelligently question his answers. I have spent allot of money to this end. As soon as I get this fixed. I will post the solution and go fly. I sincerely appreciate all the posts and comments that everone has posted. I should have done my due diligence before I spent the money but I trusted the builder to know what he was doing. Now I would have been better able to judge the builders knowledge, been wiser in my choice of builder, and told him not to try to reinvent the wheel. Now I am just trying to digout.Thanks Again,Lynn

Nick:you're an EE and you make FS add-ons and sell defrag programs? :( That education really paid off huh? ;) Your arrogant, aggressive posting style does this community a disservice and I highly doubt your claims. I shall not correspond with you further. To the original poster:I apologize for attempting to hash this out in public. I sincerely hope you get your problem corrected, and I highly suggest you bring your computer to someone that knows how to fix high-end systems. I assure you there is something wrong with your CPU cooling mechanism.

Nick:you're an EE and you make FS add-ons and sell defrag programs? :( That education really paid off huh? ;) Your arrogant, aggressive posting style does this community a disservice and I highly doubt your claims. I shall not correspond with you further. To the original poster:I apologize for attempting to hash this out in public. I sincerely hope you get your problem corrected, and I highly suggest you bring your computer to someone that knows how to fix high-end systems. I assure you there is something wrong with your CPU cooling mechanism.

Me aggressive? Not until your incompetent arrogance graced this thread with personal insults and I have avoided other threads you have posted in simply because I saw the same and did not wish to embarrass you as all that would do is spark the same result as you have displayed in this threadI am retired.. and for your information this is not what I do for a living. I already have my houses, boat and all the toys I earned from making the right choices and decisions in life. I do not make money on anything you have suggested. Your all-knowing, all-assuming arrogant nature is showing again.I am sure you grow up eventually. Hopefully before you cost someone a lot of money needlessly, or worse, however based on the track record I have seen, you still need some practice and education.I suggest you may wish to join the military.. they will kick the arrogance out of you and put what you do know to good use. It

This is the last post I shall make in this thread until the original poster decides to take some corrective actions and post them here with results.In response to Nick & Bob:I won't be drawn into your ego-stroking flamewar. My hypothesis is entirely correct and I expect it to be proven so when the OP gets around to it.In the meantime, you could always ask some Electrical Engineers that build microprocessors (and various ASICs) for a living at RealWorldTech.

Look Max, the only person in here claiming to have a lock on the issue is...you. If there's any ego play going on, perhaps a peek into the mirror would be well advised.You throw out silly platitudes like "silicon is silicon" and hold out your experience as a PC tech and then expect degreed and licensed engineers and technicians to get out of your way? Guys like Nick and I put in thousands of hours into difficult science and engineering coursework, and had to prove ourselves by being tested repeatedly every step of the way. We not only have years of experience to rely on, but an in-depth understanding of the underlying science.I've been designing, building, operating and troubleshooting RF/microwave equipment for 30+ years, and computers since the days of the 8080. Sound basic diagnostic technique is to eliminate as many unknowns as possible at the outset, and that means backing controllable parameters like voltages and speeds down to manufacturer specs as a first step. You blaze in with blinders on, declare that I'm "barking up the wrong tree," and get target fixated on that which your limited experience and apparently even more limited education and training leads you to believe. Sorry, but this isn't about being right, it's about taking things step-by-step in a methodical way that won't do more damage in the process. It doesn't make sense to me to forget all I've learned about troubleshooting multimillion dollar equipment to go "cowboy" on a problem like this.Looking forward to your next "last" post.RegardsBob ScottColonel, USAF (ret)ATP IMEL Gulfstream II-III-IV-VColorado Springs, CO

Nick:you're an EE and you make FS add-ons and sell defrag programs? :( That education really paid off huh? ;) Your arrogant, aggressive posting style does this community a disservice and I highly doubt your claims. I shall not correspond with you further. ...

TechguyMaxC,Your statement sure enough says a lot more about you than about Nick. A preconceived opinion. No knowledge. Only vapour. :(

Hello,I have been trying to get this resolved as soon as possible because I never wanted to do anything but have a fast reliable FSX machine. Not be a builder. I am using all this info plus reading Simvation, extreme overclocking website, etc. to work in the BIOS to try to learn enough to know what a builder tells me and to intelligently question his answers. I have spent allot of money to this end. As soon as I get this fixed. I will post the solution and go fly. I sincerely appreciate all the posts and comments that everone has posted. I should have done my due diligence before I spent the money but I trusted the builder to know what he was doing. Now I would have been better able to judge the builders knowledge, been wiser in my choice of builder, and told him not to try to reinvent the wheel. Now I am just trying to digout.Thanks Again,Lynn

No problem LynnWith the information you have you should be able to transmit to the tech the problem. If I had a few spare hours I would research the EVGA motherboard and BIOS to make a direct BIOS setting list with a diagnostic routine however I simply do not have that to spare right now.Regardless, just from the description you gave in your first post the consensus is you would be better served getting the system to someone who builds high end systems and knows what they are doing. Most builders frown on clocking. You may have a difficult time finding one willing to do it in your area. My suggestion around not finding a builder who will do it is to at least get the system looked at and verified it is running correctly under default conditions through a good tech, then we can look further into it. The tech knows they can load test under default BIOS settings and should be able to see any cooling problems as i7 runs warm with HT enabled in the BIOS even without clocking. The suggested clock of 1.28-1.35v CPU Voltage (and other settings) should net a 3.8Ghz clock on the CoolmasterV8 at close to 80c depending on the ambient temp of the room. As mentioned, the CM v8 is not a high clocking heatsink so variables including room temp and tower airflow will direct the success or failure. If you are in that ballpark with good airflow and a ambient room temp of between 75-80 degrees F I would say the CM v8 HSF is probably installed correctly. In the mean time do continue to educate yourself about your motherboard and how the BIOS settings work. If you have questions around that those can be addressed too but as a person who wishes to clock you do need to get some solid experience under your belt in order to do that safely. Clocking is fairly easy with i7 compared to past processors however you must learn the do