Hello,This is a new build and I have a problem. Would someone look at this and see if they can detect the problem? The specs on the computer are in my signature.Thanks in advance,LynnIdle Temp 74 - 75 degrees Centigrade room temperature 72 degrees Fahrenheit. Start OCCT V3.1.0 and within two seconds the CPU is to hot at 100 degrees Centigrade. Cools within ~30 seconds back to idle temp of 74 - 75C. Using CPU-Z these are the following numbers:CPU CacheClocks (core #0) L1 data 4x32 KBytes Core speed 3977.7 - 3984.8 L1 Inst 4x32 KBytes Multiplier x30.0 Level 2 4x256 Bus Speed 132.7 - 132.8 Level 3 8 MBytes QPI Link 2386.6 2391.4 Cores 4 Threads 4Cache L1-D size 32 KBytes x4Descriptor 8 way set associative, 64 Bytes line sizeL1-I 32 KBytes x4Descriptor 8- way set associative, 64 Bytes line size L2 256 KBytes x4Descriptor 8- way set associative, 64 Bytes line sizeL3 8 MBytes x1Descriptor 16- way set associative, 64 Bytes line sizeMainboard EVGA 132-BL-E758 Tylersburg Chipset X58 Rev 12 Southbridge 8201JR (ICHIOR) LPCID Fintek F71882FBios Phoenix Technologies LTD, Ver 6.00 PG Date 3/27/09 Graphic Interface Linkwidth x16 Max Supported x16Memory DDR3 Triple channel 6144 MBytes NB Frequency 3182.1 - 3188.7 MHz Dram Frequency 795.5 - 797.0 FSB: Dram 2:12 Cas# Latency (CL) 8.0 Clocks Ras# to Cas# Delay (tRCD) 8.0 Clocks Ras# Precharge (tRP) 8.0 Clocks Cycle Time (tRAS) 24.0 Clocks Command Rate (CR) 1T SPD Slot #1 DDR3 Module Size 2048 MBytes Max Bandwidth PC3-10700H (667) Manufacturer Corsair Part # CM3X2G1600C8D SPD Ext XMP JEDEC #1 #2 #3 XMP-1600 Freq 444 593 667 800 Cas# Latency 6.0 8.0 9.0 8.0 Ras# to Cas# 6 9 10 8 Ras# Precharge6 9 10 8 tRAS 16 22 25 24 tRC 23 31 34 41 Command Rate 2T Voltage 1.5V 1.5V 1.5V 1.65V OCCT V3.1.0 CPU 1 77 2 77 3 76 4 76 CPU 1 44 Voltage Vcore 1.48V, 3.3V, 3.31-3.36V, 5V 5.05V, 12V 12.18VThis is the data I new to collect. I am not the builder, but I need your help so that I can talk to the builder about how to get this working right.Thanks again.Lynn

Hello,This is a new build and I have a problem. Would someone look at this and see if they can detect the problem? The specs on the computer are in my signature.Thanks in advance,LynnIdle Temp 74 - 75 degrees Centigrade room temperature 72 degrees Fahrenheit. Start OCCT V3.1.0 and within two seconds the CPU is to hot at 100 degrees Centigrade. Cools within ~30 seconds back to idle temp of 74 - 75C. Voltage Vcore 1.48V, 3.3V, 3.31-3.36V, 5V 5.05V, 12V 12.18VThis is the data I new to collect. I am not the builder, but I need your help so that I can talk to the builder about how to get this working right.Thanks again.Lynn

Vcore is way high, and almost certainly the cause of those temp issues.RegardsBob ScottColonel, USAF (ret)ATP IMEL Gulfstream II-III-IV-VColorado Springs, CO

I am running a I7 965 at 4GHZ, idle is mid 40's, max using Prime95 will be mid / high 70's. Where are you getting temps? Look at RealTemp - I feel it is very good.Are you sure your fan is seated correctly / and what thermal compound did you use?I am just using 30 multiplier as well. Core voltage will show a max of 1.424 for me.My settings that I change / look at:UCLK Frequency: 3200QPI/DRAM voltage: 1.325V - 1.375VDRAM Bus Voltage: 1.65V - 1.7VIntel Turbo Mode Tech DisabledC1E Support DisabledIntel Virtualization Tech DisabledCPU TM Function DisabledIntel HT Technology DisabledIntel C-State Technology: Disable Intel SpeedStep Tech DisabledCPU Spread Spectrum DisabledPCI Spread Spectrum DisabledGood Luck.Joe

Thanks allot. I will take your advise immediatelyLynn

Thanks allot. I will take your advise immediatelyLynn

You are using the EXTREME processor so to LOWER CPU speed, you DROP the CPU multiplier, but everything else except the CPU VOLTAGE remains the sameWith the settings I posted above and the Collmaster V8 you may only be able to hit 3.7/3.8HGz with a lower Vcore stable and stay under 80cYou or your builder must work out CPU Voltage and CPU Multiplier to find the highest speed stable with the lowest CPU VOLTAGE and remain<80c in the 1hr OCCT testWith 3.7/3.8 a guess about CPU Voltage would be somewhere between 1.25 and 1.35v

Good luck at finishing up GEX Europe.Thanks again,Lynn

This is a cooling problem. Your heatsink is either installed incorrectly or your thermal paste is. There's no reason for your idle temps to be that high. I run near 1.5V on my E8400 @ 4GHz and don't even see load temps that high. I understand the core i7 is a different beast but silicon is still silicon.

Is this not to high for that i7 chip ? Core voltage will show a max of 1.424 for me.

Is this not to high for that i7 chip ? Core voltage will show a max of 1.424 for me.

Your voltage may be a bit on the high side but that would not cause the temps you are seeing.Check your heatsink installation. There is something wrong here.

Your voltage may be a bit on the high side but that would not cause the temps you are seeing.Check your heatsink installation. There is something wrong here.

"Silicon is silicon" Well, titanium is titanium, too. But I can't use experience flying a jet with an F101 engine to justify pushing a J57 to an EGT 300 deg past redline "because, after all, titanium is titanium, and it works on the F101."Comparing voltages in a Core i7 with an e8400 is crazy advice (an i7 is a 4-core CPU with a buttload more transistors and much higher device density than a two-core E8400).1.48v without an extraordinary cooling system will indeed overheat an i7 CPU like what the OP is seeing. There may be a heat sink issue as well, but 1.48v Vcore is crazy high for that CPU on air. I know people OCing into the mid 4GHz range on voltages less than that. RegardsBob ScottColonel, USAF (ret)ATP IMEL Gulfstream II-III-IV-VColorado Springs, CO

"Silicon is silicon" Well, titanium is titanium, too. But I can't use experience flying a jet with an F101 engine to justify pushing a J57 to an EGT 300 deg past redline "because, after all, titanium is titanium, and it works on the F101."Comparing voltages in a Core i7 with an e8400 is crazy advice (an i7 is a 4-core CPU with a buttload more transistors and much higher device density than a two-core E8400).1.48v without an extraordinary cooling system will indeed overheat an i7 CPU like what the OP is seeing. There may be a heat sink issue as well, but 1.48v Vcore is crazy high for that CPU on air. I know people OCing into the mid 4GHz range on voltages less than that. RegardsBob ScottColonel, USAF (ret)ATP IMEL Gulfstream II-III-IV-VColorado Springs, CO

Bob is quite correctand not only that I have posted to the OP in another forum after realizing this is a EVGA motherboard and as such they handle QPI/DRAM and a few other settings differently.. they ADD a value to the base voltage, not set the base, therefore the QPI voltage on this board was also WAY too high. Although the heatsink installation can be a factor.. with a CPU MAX voltage spec of 1.50v for the i7 and a motherboard that sets QPI differently the temps displayed are quite understandable even with the HS mounted correctly.

"Silicon is silicon" Well, titanium is titanium, too. But I can't use experience flying a jet with an F101 engine to justify pushing a J57 to an EGT 300 deg past redline "because, after all, titanium is titanium, and it works on the F101."Comparing voltages in a Core i7 with an e8400 is crazy advice (an i7 is a 4-core CPU with a buttload more transistors and much higher device density than a two-core E8400).1.48v without an extraordinary cooling system will indeed overheat an i7 CPU like what the OP is seeing. There may be a heat sink issue as well, but 1.48v Vcore is crazy high for that CPU on air. I know people OCing into the mid 4GHz range on voltages less than that.

Not to get into a pissing match with you, but you're barking up the wrong tree. I'm a PC tech, I troubleshoot computer problems for a living and have done so for the better part of this decade across a wide variety of hardware. I've been overclocking since the 90's and I'm telling you that CPU temperatures do not get that high because of mere over-voltage. 100 degrees C under load implies a faulty heatsink installation. I have NEVER seen a simple over-voltage cause a CPU to run that far out of maximum TDP spec. The ONLY cause of that failure I have ever seen is always cooling related, be it a faulty heatsink installation or improper TIM application. Heck, maybe the OP forgot to pull the plastic cover off of the base of the heatsink.My "silicon is silicon" comment is entirely relevant in this context, given that Wofldale and Nehalem are manufactured using the exact same 45nm HKMG fabrication process. Nehalem's higher transistor density is a function of having more onboard SRAM than Wofldale, namely in the form of an 8MB L3 cache.

Not to get into a pissing match with you, but you're barking up the wrong tree. I'm a PC tech, I troubleshoot computer problems for a living and have done so for the better part of this decade across a wide variety of hardware. I've been overclocking since the 90's and I'm telling you that CPU temperatures do not get that high because of mere over-voltage. 100 degrees C under load implies a faulty heatsink installation. I have NEVER seen a simple over-voltage cause a CPU to run that far out of maximum TDP spec. The ONLY cause of that failure I have ever seen is always cooling related, be it a faulty heatsink installation or improper TIM application. Heck, maybe the OP forgot to pull the plastic cover off of the base of the heatsink.My "silicon is silicon" comment is entirely relevant in this context, given that Wofldale and Nehalem are manufactured using the exact same 45nm HKMG fabrication process. Nehalem's higher transistor density is a function of having more onboard SRAM than Wofldale, namely in the form of an 8MB L3 cache.

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.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.Practically, though, it's a simple matter of dropping Vcore down to, say 1.32v and slowing closer to stock speeds...a bad heatsink will still be apparent there without putting the CPU at risk. A competent PC tech wouldn't have pushed the voltage up with the kinds of temps being reported, especially all the way to 1.48v on an i7. 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.RegardsBob ScottColonel, USAF (ret)ATP IMEL Gulfstream II-III-IV-VColorado Springs, CO

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.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.Practically, though, it's a simple matter of dropping Vcore down to, say 1.32v and slowing closer to stock speeds...a bad heatsink will still be apparent there without putting the CPU at risk. A competent PC tech wouldn't have pushed the voltage up with the kinds of temps being reported, especially all the way to 1.48v on an i7. 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.RegardsBob ScottColonel, USAF (ret)ATP IMEL Gulfstream II-III-IV-VColorado Springs, CO

and to add to what Bob said.. the QPI voltage on EVGA motherboards is handled different.. if this person set the QP Voltage based on the Asus method they were not only approaching the MAX (1.5v) of i7 they were also overvolting QPI/DRAM by quite a bit which then compounds the heatNow.. the Coolmaster V8 is pretty idiot proof in installation.. 4 bolts screwed down and its on.. and although there may be something wrong in that area as well in terms of improper application of thermal compound I can not see that HS unit if bolted down not installed strait.. and the Coolmaster V8 is not a high clocking i7 unit either.. I would say it would max out on a C0 proc at about 3.8Ghz and 1.35vso 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.