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Faulty CPU?

post #1 of 7
Thread Starter 
First and foremost let me start by saying I am a complete newb and have never oc'ed a computer before. I decided to venture into this teretory with my new build. To say it has me pulling my hair out is an under statement. My specs are below:

Mobo: Intel Extreme Series ATX 2400MHz (Socket 2011) DX79SR
CPU: Intel Core i7-3930K HYPERTHREADING TURNED ON
GPU: EVGA GTX 690 4gb Dual GPU 512-bit GDDR5
Mem: PNY 16gb PC3-17000 DDR3 CAS 10 2133mhz
Case: Cooler Master HAF 932 Advanced
Cooler: Hydro Series H100
SSD: 3 X 256gb OCZ Vertex 4 SAT3
PSU: Rosewill RBR1000-M 1000-Watt Bronze Series
OS: Windows 7 Premium
TIM: Coollaboratory Liquid Pro

With all of that said, I am seriously concerned with the CPU core Voltage numbers that CPU-Z is giving me. With the stock default BIOS settings and the CPU also stock and NOT overclocked, CPU-z Shows my voltages anywhere between 1.7 and 1.9v. My temps however according to RealTempGT are great and never go above 45 degrees. Performance wise, the system seems stable and runs like a champ for hours on end. Everywhere I have read says that if I were really pumping over 1.7v into the 3930K that it would be fried by now (within minutes actually)

Just for poops and giggles I went into the BIOS and tweaked a couple settings according to a i7 SBe 3930k-3960X guide I found. While most people are able to get at least 5.0ghz out of this chip, I cant get it to budge over 4.6ghz. At 4.6 with a bios setting of 1.4 volts, things seems to doing fine. Whats actually more odd (to me) is that CPU-Z still shows a ridiculous voltage of 1.824 give or take. OCCZ says I'm only delivering 1.1v which is also unrealistic to me.

I have yet to prime95 test for 12 hours. I will do that tonight. I did however run it for 4 hours at 4.6ghz and it passed with no issues.

Is CPU-Z whacked out and giving me false numbers? Is it possible that I am really delivering over 1.8v to the CPU for hours on end with a single glitch? Or is it likely that I have a bad CPU out of the box?
post #2 of 7
i'm not sure where you heard most people get 5.0ghz with their chips, this is news to me.
4.6ghz seems about right, could you post a screeny of coretemp/hwmonitor with 1.8v on the cpu?
http://www.tomshardware.com/reviews/core-i7-3930k-3820-test-benchmark,3090-2.html
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post #3 of 7
Thread Starter 
Quote:
Originally Posted by l0max View Post

i'm not sure where you heard most people get 5.0ghz with their chips, this is news to me.
4.6ghz seems about right, could you post a screeny of coretemp/hwmonitor with 1.8v on the cpu?
http://www.tomshardware.com/reviews/core-i7-3930k-3820-test-benchmark,3090-2.html

Believe it or not, your post actually made me breathe a little easier. I had not tried HWmonitor yet, and in doing so, it seems their reading are the most accurate. With that said however, I find it alarming that CPU-Z would be so off. I have attached the screen shots below.



post #4 of 7
i don't know what's going on with cpu-z but that reading is absolutely wrong, there is no way your cpu can survive 1.7 volts.
post #5 of 7
post #6 of 7
Quote:
Originally Posted by Chad556 View Post

Believe it or not, your post actually made me breathe a little easier. I had not tried HWmonitor yet, and in doing so, it seems their reading are the most accurate. With that said however, I find it alarming that CPU-Z would be so off. I have attached the screen shots below.
Warning: Spoiler! (Click to show)


]

wow that's strange. i have no idea why cpu-z would give crazy readings like that. does it validate?
either way looks like your h100 and coollabs tim are doing great work on your temperatures.

only possibilities i can think of are reset your cmos and update your bios.
Edited by l0max - 1/24/13 at 1:38am
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post #7 of 7
Surely that can't be right.... 1.8v?

There must be something that is being read wrong as I don't know many CPU's that can take 1.8v.
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