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i7 930 4.2GHz was stable, now shurts down suddenly under load - Page 2

post #11 of 34
Thread Starter 
That's gonna be a pita... I just installed my WC loop a few weeks ago :|
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post #12 of 34
Thread Starter 
I'm really starting to think it's the chip and not the RAM. I think running my RAM at 2000MHz may have damaged the IMC of my 930, if it's true that the 930s can't run RAM at that high of a frequency.

I ran MemTest 86+ for 2 complete passes with no errors. I don't know for certain, but I'm pretty sure that MemTest does not tax the IMC very much. Just the RAM itself. I'm going to RMA the RAM anyways, just to narrow it down.

Here's my BIOS settings, does anything look suspicious to you guys?

-CPU Settings-
CPU Clock Ration [21x]
QPI Clock Ratio [Auto 7.2GHz]
Uncore Clock Ratio [Auto 4000MHz]
BCLK Frequency [200]
XMP [Disabled]
System Memory Multiplier [10.0]
PCI Express Frequency [Auto]
CPU Clock Drive [800mV]
PCI Express Clock Drive [900mV]
CPU Clock Skew [0ps]
IOH Clock Skew [0ps]

-Memory Settings-
Performance Enhance [Standard]
DRAM Timing Selectable [Quick]
CAS Latency Time [9]
tRCD [9]
tRP [9]
tRFC [88]
CMD [2]
All Other Timings [Auto]

-Voltage Settings-
Load-Line Calibration [Enabled]
CPU Vcore [1.42500v]
QPI/VTT Voltage [1.595v]
QPI PLL [1.240v]
IOH Core [1.260v]
DRAM Voltage [1.66v]

I do have a full WC loop also, and my temps never exceeded 70c under 100% load.
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post #13 of 34
Quote:
Originally Posted by shapiror06 View Post

-Voltage Settings-
Load-Line Calibration [Enabled]
CPU Vcore [1.42500v]
QPI/VTT Voltage [1.595v]
QPI PLL [1.240v]
IOH Core [1.260v]
DRAM Voltage [1.66v]

I do have a full WC loop also, and my temps never exceeded 70c under 100% load.

YIKES!!!! THAT is likely the root of your problem. I suspect CPU damage.
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post #14 of 34
1.425 vcore is pretty intense...

more so the 1.595 vtt though, normally try to limit that to 1.35
post #15 of 34
Only time I ever had this was because I forgot to connect the pump of my H50 and it started running at 100 degrees + .

Sudden reboot, no message or anything.
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post #16 of 34
Thread Starter 
Quote:
Originally Posted by Skripka View Post
YIKES!!!! THAT is likely the root of your problem. I suspect CPU damage.
Quote:
Originally Posted by kevingreenbmx View Post
1.425 vcore is pretty intense...

more so the 1.595 vtt though, normally try to limit that to 1.35
With proper cooling these voltages are perfectly fine. And with ram running at 2000MHz a QPI voltage towards 1.6v is normal too. I was unsure about this at first too, but G.Skill technicians assured me it was perfectly safe.
Edited by shapiror06 - 1/27/11 at 11:08am
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post #17 of 34
Quote:
Originally Posted by shapiror06 View Post
With proper cooling these voltages are perfectly fine. And with ram running at 2000MHz a QPI voltage towards 1.6v is normal too. I was unsure about this at first too, but G.Skill technicians assured me it was perfectly safe.
that is a safe memory voltage, but def not for IMC, you need to back that off and hope nothing is fried.
post #18 of 34
Quote:
Originally Posted by shapiror06 View Post
With proper cooling these voltages are perfectly fine. And with ram running at 2000MHz a QPI voltage towards 1.6v is normal too. I was unsure about this at first too, but G.Skill technicians assured me it was perfectly safe.
"Normal" in the sense that Bloomfields need that much voltage to run 2000mHz memory. They almost always do. I run my Geil 2133 mHz underclocked, as 1866+mHz requires 1.35V+ CPU-VTT. To run 2133 my Bloomfield needs 1.45V CPU-VTT, which I would not run for folding 24/7.

I suspect G.Skill was wrong about the "safe" part.
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post #19 of 34
Thread Starter 
Quote:
Originally Posted by Skripka View Post
"Normal" in the sense that Bloomfields need that much voltage to run 2000mHz memory. They almost always do. I run my Geil 2133 mHz underclocked, as 1866+mHz requires 1.35V+ CPU-VTT. To run 2133 my Bloomfield needs 1.45V CPU-VTT, which I would not run for folding 24/7.

I suspect G.Skill was wrong about the "safe" part.
I think you're right. If my CPU is messed up, what do you think my chances are getting G.Skill to replace the CPU?
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post #20 of 34
Same thing happened to me with my 1 week old chip.

http://www.overclock.net/intel-cpus/...-my-2600k.html

Never really found a cause or solution.
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