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i7 2600K - Sandy Overclock Persistent reboot problems @ 4.8 Ghz.

post #1 of 16
Thread Starter 
Hi everyone.
I finally decided to get into a forum that "knows what they are doing" and ask for help. I'm getting nuts with this damn computer, it just won't do as i say it to.

Let me explain:

I got my system stable at 4.8 Ghz, using 1.43 ~ 1.45V (thats the Vcore under load and vcore under IBT). However, i'm having this issue that is annoying me really bad. Before i start explaining, here is my system specs:

i7 2600K
Asus P8P67 Deluxe B3
Gskilk 2x2 GB 1600 CL7 1.6V @ 2133 Mhz CL9
Asus HD 5870 1 GB
Noctua NH D14 with MX-3 as thermal Paste.
2xSeagate 500GB [Raid 0] + 2x 2TB Western Digital
Corsair HX750

So, my problem is indeed simple to explain: The god damn computer will just simply "power off" somehow randomly. No BSOD, no logs, nothing. Just Strait power off. It usually does so when i quit or enter some game, but this is so random that can be days until this happens again. The symptoms when it happens are the following ones by order: The computer shuts down completely, like if i unplugged its power supply and then just turns on by itself a few seconds later.

My Bios settings to get my sandy at 4.8 Ghz are the following:

Bios: Latest BETA one
AI OC Tuner: manual
BCLK: 100
Turbo Ratio: By all cores via OS
By all cores Ratio: 48
Internal PLL Overclock: Enabled
Memory : 2133
EPU Power saving: Disabled
LLC: UltraHigh
VRM frequency: Manual
VRM Mode: 350
Phase: Extreme
Duty: Tprobe
Cpu current cap. : 100
CPU Volts: Offset
Offset Signal: +
Offset: 0.090 [1.43 ~ 1.45V on CPU z as explained above)
Dram voltage: 1.65
Rest of this tab on auto.

CPU Ratio: 48
Intel Adaptive Thermal Monitor: Enabled
Hyper-threading: Enabled
Active Processor Cores: All
Limit CPUID Maximum: Disabled
Execute Disable Bit: Enabled
Intel Virtualization Technology: Enabled
Enhanced Intel Speedstep Technology: Enabled
Turbo Mode: Enabled
CPU C1E: Disabled
CPU C3 Report: Disabled
CPU C6 Report: Disabled

Now, this is completely stable under IBT and Prime95, the only problem is that one: Random shutdowns from nothing with no reason. I can make the shutdown symptom happen MUCH faster and frequently if i set the Load Line calibration to EXTREME, and lowering a little bit the offset (so it wont get to 1.5V on load). Normally the system shutdown as soon as i get into windows or while booting it with Extreme LLC.

Before someone says it's my temperature, under 20 heavy rounds of IBT, the highest "core" (Package, not a core) is at 75ºC, with room temperature around 28ºC. All the cores are 73 and lower values.

I've been trying to get this stable for WEEKS and i just can't get this god damn system to work properly at this frequency. My i5 750 wasn't this difficult to overclock, i got it to 4 Ghz over a year without ANY problem!

I Tried several changes, like, i tried to up the VRM a little, disable completely my power saving options (EIST, C States, etc), Thermal Monitor, and still no go. The only thing i didn't test was disable the "Anti Surge Protection". Is this safe to disable? Because its the only thing i didn't tried yet, because i'm somehow afraid on damaging my system, but it's the only thing i didn't try to disable to make it work. I Already checked everything inside the computers case, everything is fine.

Since my System refused to work at 4.8 Ghz, i had to step down to my completely stable 4.6 Ghz. Settings are similar, however VRM is on AUTO, and the offset is set to + 0.020 [1.350 ~ 1.375]. At 4.6 Ghz my system is running rock solid for over a week, no problems at all with random reboots. I can even get C-States activated, however i don't because i preffer EIST over them, since its almost the same thing, and it is controlled by the OS instead of the Hardware,

So, since this is my second board, with the same exact defect, what could this be?
I'm really getting crazy with this build, as fastest and awesome it might be, this is the worse of all my experiences with Overclocking of all the time. Even my First computer, A p4 3.2 Ghz Skt 478 is still after 8 years running healthy at 3.8 Ghz!

My only "hope" is for you guys to have some magic setting / solution, or that that Anti Surge Protection Disabled works out my problem, and thats why i would like to know if it's safe to disable it to try (because at Extreme LLC, i could lower my Vcore to 1.408 ~ 1.411 at load, maybe less).

I Searched the Internet for days, without any results at all.

Any suggestions in order to fix this problem?
Thank you in advance for the time you spent reading this testament / ideas to fix this out. My apologizes for the size of this topic.

Meanwhile, i'm going to set up my profile, etc in the forums. Thank you once again

PS: Woow, i start really well, just registered myself already forgot my password
Edited by Black_Lion - 11/1/11 at 6:42pm
Black Lion System
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 2600K Asus P8P67 Deluxe B3 Asus HD5870 1GB V1 GSkill DDR3 1600 Mhz CL7 @ 2133 Mhz CL9 
Hard DriveOptical DriveOSMonitor
2x500GB Seagate [Raid 0] + 2x2TB Western Digital Asus Windows 7 x64 Sansung Syncmaster x2 
PowerCase
Corsair HX750 Coolermaster 690 Advanced II 
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Black Lion System
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 2600K Asus P8P67 Deluxe B3 Asus HD5870 1GB V1 GSkill DDR3 1600 Mhz CL7 @ 2133 Mhz CL9 
Hard DriveOptical DriveOSMonitor
2x500GB Seagate [Raid 0] + 2x2TB Western Digital Asus Windows 7 x64 Sansung Syncmaster x2 
PowerCase
Corsair HX750 Coolermaster 690 Advanced II 
  hide details  
Reply
post #2 of 16
Try running your memory at 1600, see if stable. Then 1866, see if stable. Try adding MOAR VCORE. I haven't tested extensively, but the small amount of testing I've done on my system shows me wayyy less than 1% difference between 1333 and 1866 memory speed.

Could be a video driver issue, make sure it's up to date.

Could be a PSU issue, how old is it? Can you measure it with a multimeter? Can you monitor it under load and see if all the rails are correct?
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post #3 of 16
Maybe you had the same problem I did. My pc kept going in a persistent reboot and I looked everywhere for the answer. Basic simple answer to do is just open your pc up, hold the reset button on the motherboard (take out the mobo battery if it is an older motherboard) to reset the cmos. Then see if your pc starts up.
post #4 of 16
Thread Starter 
Well, let me answer to all the questions:

About the Ram: The ram is completely Rock Solid, i even tested it during night with Memtest. I Got no problems at all with my computer running at 4.6 Ghz, only when running at 4.8 Ghz. The problems get even worse if i use "Extreme" LLC, since i can't barely get into Windows. This same problem happened with my first motherboard too.

About the Driver Issue: I Have it updated to the most recent one. I tried another one just to rule that out, still no go.

About the PSU: I Don't have a multimeter to test it. However i already stressed the computer out for one hour using furmark and Intel Burning Test at the same time to see if the PSU would fail, but it didn't. I Was watching over the rails on HW Monitor (i know it's not 100% reliable). Also she is relatively new, I bought it in April 2010. It worked wonderfully with my i5 750 / Asus P7P55D-E Deluxe (Exact same computer i have now ,only mobo / CPU changed).

About the Reset: I Already reseted my motherboard 3 times clearing it's cmos, and it still does the same thing.

Please note that the shutdown (aka reboot, since it turns on after by itself) only happens at the speed of 4.8 Ghz. It occurs much faster if i use LLC Extreme, since Windows can barely boot up without my system to shutdown.

I Don't know anymore what this could be. The only thing i didn't tried yet was disabling that anti surge protection. My computer is heavily protected with a 1200W UPS that is plugged into a resistance to make sure the current is stable, and that in case of power loss my computer keeps running for at least 30 minutes (I tested my UPS's duration, it can last 1 hour and 5 minutes).
Edited by Black_Lion - 11/2/11 at 7:05am
Black Lion System
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 2600K Asus P8P67 Deluxe B3 Asus HD5870 1GB V1 GSkill DDR3 1600 Mhz CL7 @ 2133 Mhz CL9 
Hard DriveOptical DriveOSMonitor
2x500GB Seagate [Raid 0] + 2x2TB Western Digital Asus Windows 7 x64 Sansung Syncmaster x2 
PowerCase
Corsair HX750 Coolermaster 690 Advanced II 
  hide details  
Reply
Black Lion System
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 2600K Asus P8P67 Deluxe B3 Asus HD5870 1GB V1 GSkill DDR3 1600 Mhz CL7 @ 2133 Mhz CL9 
Hard DriveOptical DriveOSMonitor
2x500GB Seagate [Raid 0] + 2x2TB Western Digital Asus Windows 7 x64 Sansung Syncmaster x2 
PowerCase
Corsair HX750 Coolermaster 690 Advanced II 
  hide details  
Reply
post #5 of 16
raise the cpu current cap..add moar Vcore....raise the 350 to 400-sh..(hope you have a fan blowing on the vrm sinks)
 
Thuban Powah!
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cheap! Newegg box panel ibeats with onboard. 
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Thuban Powah!
(14 items)
 
 
CPUMotherboardGraphicsRAM
Xeon X5650 Asus P6X58D-E Sapphire HD 7950 G.Skill Trident-X 2600 CL10 
Hard DriveCoolingPowerCase
Samsung 840 pro Bong cooler / RASA waterblock Rosewill Capstone Gold 750 None 
MouseMouse PadAudio
cheap! Newegg box panel ibeats with onboard. 
CPUMotherboardGraphicsRAM
AMD Phenom II X6 1075T w/2 cores locked @ 4.2+ M4a89GTD-Pro XFX Radeon HD 5870 8gb Samsung ddr3 1600 11-11-11-28@ 8-8-8-24 
Hard DriveHard DriveOptical DriveCooling
OCZ Agility2 40gb WD Blue 500GB Lite-On RASA waterblock 
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post #6 of 16
Thread Starter 
No matter what Vcore i give it. I tried up to 1.5V and it still shuts down. Note that there is no BSOD, it's straight power off. However this will not happen at 4.6 Ghz, thats what is driving me crazy!
Black Lion System
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 2600K Asus P8P67 Deluxe B3 Asus HD5870 1GB V1 GSkill DDR3 1600 Mhz CL7 @ 2133 Mhz CL9 
Hard DriveOptical DriveOSMonitor
2x500GB Seagate [Raid 0] + 2x2TB Western Digital Asus Windows 7 x64 Sansung Syncmaster x2 
PowerCase
Corsair HX750 Coolermaster 690 Advanced II 
  hide details  
Reply
Black Lion System
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 2600K Asus P8P67 Deluxe B3 Asus HD5870 1GB V1 GSkill DDR3 1600 Mhz CL7 @ 2133 Mhz CL9 
Hard DriveOptical DriveOSMonitor
2x500GB Seagate [Raid 0] + 2x2TB Western Digital Asus Windows 7 x64 Sansung Syncmaster x2 
PowerCase
Corsair HX750 Coolermaster 690 Advanced II 
  hide details  
Reply
post #7 of 16
IBT is bad news. Prime95 is what you want.
post #8 of 16
sounds like something that monitors either the voltage or temperature is possibly shutting it down?
post #9 of 16
Thread Starter 
$ilent, thats what i'm thinking about. I Think that it is the Asus Surge Protection (since i already tried with thermal monitor disabled). However i don't know if that is safe to disable. I think it's that because it only happens when passing from idle to load or vice versa. I Didn't tested to disable the EIST and running at 4.8 all the time because i find it a little bit exaggerated to have the CPU at 1.448V all the time (this is mainly because i don't know if this is safe to do, thats why i keep EIST on).

And Malcolm, i use Prime 95 too, 12h to 24h to test stability. This overclocked passed those tests, without any problem. Is this random restarts that are making me go crazy.

Can someone tell me if it is safe to try to disable the Asus Anti Surge protection?
Black Lion System
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 2600K Asus P8P67 Deluxe B3 Asus HD5870 1GB V1 GSkill DDR3 1600 Mhz CL7 @ 2133 Mhz CL9 
Hard DriveOptical DriveOSMonitor
2x500GB Seagate [Raid 0] + 2x2TB Western Digital Asus Windows 7 x64 Sansung Syncmaster x2 
PowerCase
Corsair HX750 Coolermaster 690 Advanced II 
  hide details  
Reply
Black Lion System
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 2600K Asus P8P67 Deluxe B3 Asus HD5870 1GB V1 GSkill DDR3 1600 Mhz CL7 @ 2133 Mhz CL9 
Hard DriveOptical DriveOSMonitor
2x500GB Seagate [Raid 0] + 2x2TB Western Digital Asus Windows 7 x64 Sansung Syncmaster x2 
PowerCase
Corsair HX750 Coolermaster 690 Advanced II 
  hide details  
Reply
post #10 of 16
Black Lion try disabling Speedstep, so your not going back to 1.6ghz, and also try using manual voltage instead of offset so that your vcore is at the same level as apposed to changing.

Maybe that will help...if not im not sure about the surge protection, ive never had any of my SB chips switch off like that and ive ran them up to almost 1.6v at times. I hate to say it, but surely it comes on for a reason.
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