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My 3770k won't overclock stably at all. Even 4.0 Ghz gives errors in Prime95. Is it a bad mobo, bad processor or bad configs?

post #1 of 14
Thread Starter 
Summarized background (you may skip this paragraph): I had a Core i5 2500k which suddenly failed a few months ago, after 3 years of overclocked service. To make sure it was the processor, I sent the machine to a technician who managed to bend the Asus P8P67 Deluxe mobo's socket pins and deny responsibility afterwards. Another technician confirmed it was the processor, so I ordered a Intel DZ68BC mobo and a Core i7 3770k. I found out too late that this mobo's BIOS has been glitched since version 028 and won't overclock, and Intel never fixed it (and never will, since they are no longer making mobos). Since Ivy Bridge requires BIOS 035 or newer for compatibility, I can't rollback to version 028. So I requested from Intel a refund on the mobo, which will be granted once I send the mobo over to them. Thus, I ordered a used ASUS P8P67-m PRO as its replacement, which arrived 2 days ago.

The seller claimed the board was in "perfect" state, but I noticed a couple of its socket pins looked slightly bent, as per this picture I took: http://prntscr.com/8uu436 . Since it's now super hard to find a cheap overclockable mobo for socket 1155 in Brazil, I decided to give it a go nevertheless and mount the processor. In my limited testing so far (less than 2 days), the computer works absolutely fine at stock speed, with no errors in Prime95 and no BSODs. That is, at stock.

As soon as I try to overclock it to even so little as 4.0 GHz (the maximum stock speed with all cores at 100% is 3.7 GHz), I get errors in Prime95 or BSODs. Here are my BlueScreenViewer entries: http://prntscr.com/8uu5hw . Aside from the first error which is "increase vcore", all the others had error code 0x124, which according to an overclocking guide, means:

"0x124 = increase/decrease vcore or QPI/VTT... have to test to see which one it is"

I tried several Vcore offsets (this particular mobo only allow offsets, not fixed Vcore) from 0.100 to 0.350 and still I always get error 0x0124, so I figured I could try increasing the QPI/VTT, also called System Agent. Problem is, I can't find that option in the BIOS. Here are photos of my BIOS screens: http://prntscr.com/8utj15 and http://prntscr.com/8utibe and http://prntscr.com/8uu875 . Does anyone see any option to set the QPI/VTT/System Agent voltage?

The configs seen in the pictures above were the ones I set after following overclocking guides. After those configs failed, I reset the mobo to the optimized defaults, set the turbo multiplier to 40 and Vcore offset to +0.100. BCLK is always at 100.0. But still, error in Prime95!

As I'm writing this post, I'm running Prime95 again to make sure it's stable at stock. It ran for 6 hours the first time and has been running for another 6 hours without issues. I also gamed for an hour or so without issues, so it definitely seems stable, which means the slightly bent couple of pins in the socket don't seem to be a problem.

So now I'm unsure if the fault is with the processor, the mobo, or the more unlikely possibility that I missed some critical configuration in BIOS necessary to keep even this tiny OC stable. If it's the mobo, I can initiate a dispute with the seller and he'll be forced to give me the money back. But only if I initiate it within the next 2 weeks.

I know this is a long post with a lot of info. Thank you very much for your patience in reading this far!

P.S: I run Folding@Home all the time, so by helping me get this OC, you'll also be helping science! biggrin.gif

Additional info that may help troubleshoot it:
- I set the multiplier to 43 and Vcore offset to +0.350, then ran Prime95's hottest test. One of the cores reached 105 degrees celsius even with my Hyper 212X cooler! I'm amazed the processor didn't turn off on its own. The cooler is well-mounted, because I get only 60-65 degrees at full load at stock 3.7 GHz speeds, depending on room temp.
I then turned Vcore down to 0.300 which helped a bit with the temps, but I got a BSOD regardless.

- Despite the +0.350 offset, CoreTemp only reported a VID of 1.170v or so during the above test. I would have expected values close to 1.400v...
Normally, at stock multiplier and voltage, it stays at a VID of 0.9-1.1v: http://prntscr.com/8uud3a

- Also notice from the picture above how the BCLK is at 100.33, not 100.0 like I set it in BIOS. It sometimes changes to other values as well, like 100.01. My technician friend tells me this is normal, but I thought I'd point it out regardless.

- The case fans are loud when browsing BIOS and when the computer is booting up. When Windows starts loading, they get even louder! Therefore, they seem to increase along with processor load. They only stop when I load SpeedFan software within Windows, which overtakes control of the fans and I can set the speed I want. Could this indicate a faulty mobo?

Specs:
Core i7 3770k
GTX 970 G1 Gaming
3x 4 GB 1333 RAM
Corsair Builder's Series CX 500W PSU
Asus P8P67-M PRO motherboard
Samsung 850 Evo SSD
Hyper 212X heatsink
Edited by Nantes - 10/25/15 at 6:00am
post #2 of 14
Hmm. x124 could be a couple things, but have you tried playing with the ram? Possibly down clock it and test again?
Main Rig
(16 items)
 
  
CPUMotherboardGraphicsRAM
i7 2600 P8P67 Pro Rev 3.1 GTX 760 2GB 4x4 1866 
Hard DriveHard DriveOptical DriveCooling
Crucial RealSSD C300 128GB Random HDD's / SSD's Samsung Blu-ray  Stock Intel cooler 
OSMonitorKeyboardPower
W7 x64 42" Vizio TV. 1080p.  Logitec G15 Corsair CX750M 
CaseMouseMouse PadAudio
Newegg Cheap Case lol Dynex, lol Generic cheapy Sony wireless headphones.  
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Main Rig
(16 items)
 
  
CPUMotherboardGraphicsRAM
i7 2600 P8P67 Pro Rev 3.1 GTX 760 2GB 4x4 1866 
Hard DriveHard DriveOptical DriveCooling
Crucial RealSSD C300 128GB Random HDD's / SSD's Samsung Blu-ray  Stock Intel cooler 
OSMonitorKeyboardPower
W7 x64 42" Vizio TV. 1080p.  Logitec G15 Corsair CX750M 
CaseMouseMouse PadAudio
Newegg Cheap Case lol Dynex, lol Generic cheapy Sony wireless headphones.  
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post #3 of 14
Couple of ideas for a start/

As above is RAM at 1333mhz Auto in BIOS not XMP? If not best to disable XMP and just run at bone stock RAM until youre happy the CPU is stable, remove variables smile.gif



Use CPUz to check voltage while under load. VID doesnt tell you very much when you have Vdroop and offset affecting things.

http://www.cpuid.com/softwares/cpu-z.html

I wouldn't go over 1.3 volts max under full load on Ivy with a 212, it will get to hot, it's not a bad cooler but don' t overestimate it. Especially as I would think your ambient room temps are fairly high there?

I personally dont mind temps hitting 90c under stress testing with Prime/IBT on Ivy chips. It doesnt get anywhere near that under normal conditions.

You mentioned BIOS for the old mobo. Did you update to the latest BIOS on the new Asus?

BCLK fluctuates slightly that' s perfectly normal.
Edited by Slink3Slyde - 10/25/15 at 2:43am
post #4 of 14
Thread Starter 
First, thank you for your replies! Since I wrote this post I have been trying a few things.

I tried gaming yesterday with multiplier 40 and no voltage increase. Computer froze (no BSOD) on my first match. Set offset to +0.025 and went gaming again. This time it was mostly good, but I noticed the audio stuttered for a second or so randomly a few times, and in one match the game slowed down to a crawl (maybe 10 FPS) for about 30 seconds or so, then returned to normal. So I bumped it to +0.035, turned on Prime95 and went to sleep. I woke up and the PC had restarted. As soon as I tried opening BlueScreenViewer to see the BSOD code, computer froze and I got a BSOD, but this time it was code 0x0101, "increase Vcore". So I bumped it to +0.045 and still I got a 0x0124 BSOD after half an hour of Prime.
Note: The BSOD that reset my computer during the morning wasn't 0x0101, but the same old 0x0124. Odd.

I have JUST read a specific OC guide for my mobo that mentions I should increase the Additional Turbo Voltage setting, not just the Vcore. So I just set it to +0.012 and am now testing.
Quote:
but have you tried playing with the ram

I haven't messed with RAM voltages as I feel OC'ing the RAM is absolutely pointless, and these sticks are not made for OC'ing anyway. I'm using two Corsair 1333 MHz sticks and a Kingston 1333 MHz stick. They are the same latency and all. You still think I should downclock them?
Quote:
Originally Posted by Slink3Slyde View Post

Couple of ideas for a start/

1- As above is RAM at 1333mhz Auto in BIOS not XMP? If not best to disable XMP and just run at bone stock RAM until youre happy the CPU is stable, remove variables smile.gif

2- Use CPUz to check voltage while under load. VID doesnt tell you very much when you have Vdroop and offset affecting things.

http://www.cpuid.com/softwares/cpu-z.html

3- I wouldn't go over 1.3 volts max under full load on Ivy with a 212, it will get to hot, it's not a bad cooler but don' t overestimate it. Especially as I would think your ambient room temps are fairly high there?
.
4- You mentioned BIOS for the old mobo. Did you update to the latest BIOS on the new Asus?

1- Yeah it's all on auto

2- Thanks, will do!

3- Yep, ambient temp has been around 30 celsius lately

4- Yes, the seller updated it to the latest BIOS before shipping so it would be compatible with my Ivy Bridge CPU
Edited by Nantes - 10/25/15 at 5:30am
post #5 of 14
Quote:
Originally Posted by Nantes View Post

First, thank you for your replies! Since I wrote this post I have been trying a few things.

I tried gaming yesterday with multiplier 40 and no voltage increase. Computer froze (no BSOD) on my first match. Set offset to +0.025 and went gaming again. This time it was mostly good, but I noticed the audio stuttered for a second or so randomly a few times, and in one match the game slowed down to a crawl (maybe 10 FPS) for about 30 seconds or so, then returned to normal. So I bumped it to +0.035, turned on Prime95 and went to sleep. I woke up and the PC had restarted. As soon as I tried opening BlueScreenViewer to see the BSOD code, computer froze and I got a BSOD, but this time it was code 0x0101, "increase Vcore". So I bumped it to +0.045 and still I got a 0x0124 BSOD after half an hour of Prime.
Note: The BSOD that reset my computer during the morning wasn't 0x0101, but the same old 0x0124. Odd.

I have JUST read a specific OC guide for my mobo that mentions I should increase the Additional Turbo Voltage setting, not just the Vcore. So I just set it to +0.012 and am now testing.
I haven't messed with RAM voltages as I feel OC'ing the RAM is absolutely pointless, and these sticks are not made for OC'ing anyway. I'm using two Corsair 1333 MHz sticks and a Kingston 1333 MHz stick. They are the same latency and all. You still think I should downclock them?
1- Yeah it's all on auto

2- Thanks, will do!

3- Yep, ambient temp has been around 30 celsius lately

4- Yes, the seller updated it to the latest BIOS before shipping so it would be compatible with my Ivy Bridge CPU

Tried taking out the odd Kingston RAM stick? Sometimes the lower timings might not quite matching up and causing problems even if the higher ones are the same, you would need to set all the timings the same at values all the sticks could manage yourself manually to get it to work if this was the case. Might take a while.
post #6 of 14
Thread Starter 
As I said, they are the same latency (I guess I used the wrong word, but I meant the timings). 9-9-9-24. So that shouldn't be the case.
post #7 of 14
Quote:
Originally Posted by Nantes View Post

As I said, they are the same latency (I guess I used the wrong word, but I meant the timings). 9-9-9-24. So that shouldn't be the case.

There are many more timings then that smile.gif



Sometimes kits dont play well together without a bit of fiddling, as I said earlier maybe it worked on your old board but not now, just a thought about eliminating possibilities again
post #8 of 14
Agreed ^

It took me awhile to get my two kits working together. After many many bsod's and testing, I finally got them stable. Unless you just have the worst clocking 3770K in history, I would still say it's something with the ram.

Personally, I would start with either the Kingston kit or Corsair kit to get the max known stable overclock out of the CPU. Once you know what the CPU will do, then try both kits and try to work that out.
Main Rig
(16 items)
 
  
CPUMotherboardGraphicsRAM
i7 2600 P8P67 Pro Rev 3.1 GTX 760 2GB 4x4 1866 
Hard DriveHard DriveOptical DriveCooling
Crucial RealSSD C300 128GB Random HDD's / SSD's Samsung Blu-ray  Stock Intel cooler 
OSMonitorKeyboardPower
W7 x64 42" Vizio TV. 1080p.  Logitec G15 Corsair CX750M 
CaseMouseMouse PadAudio
Newegg Cheap Case lol Dynex, lol Generic cheapy Sony wireless headphones.  
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Main Rig
(16 items)
 
  
CPUMotherboardGraphicsRAM
i7 2600 P8P67 Pro Rev 3.1 GTX 760 2GB 4x4 1866 
Hard DriveHard DriveOptical DriveCooling
Crucial RealSSD C300 128GB Random HDD's / SSD's Samsung Blu-ray  Stock Intel cooler 
OSMonitorKeyboardPower
W7 x64 42" Vizio TV. 1080p.  Logitec G15 Corsair CX750M 
CaseMouseMouse PadAudio
Newegg Cheap Case lol Dynex, lol Generic cheapy Sony wireless headphones.  
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post #9 of 14
Thread Starter 
Guys, I following the specific guide for my mobo I linked earlier, I increased the Additional Turbo Voltage setting by 0.036 and this seems to have stabilized the 40 multi overclock. I'm now testing the 41 one and will keep on going like this. If I run into any problems i'll post again, but for now it seems that the problem is solved: looks like it was bad configs after all!

Thank you very much for your help everyone!
Quote:
Originally Posted by Slink3Slyde View Post

There are many more timings then that smile.gif



Sometimes kits dont play well together without a bit of fiddling, as I said earlier maybe it worked on your old board but not now, just a thought about eliminating possibilities again

The two Corsair sticks are in one channel, with the Kingston one physically in-between the two corsairs on the other channel. All parameters match up perfectly except for the highlighted one and the one below it: http://prntscr.com/8vd0uk

Is that cause to worry?
Edited by Nantes - 10/25/15 at 8:04pm
post #10 of 14
Quote:
Originally Posted by Nantes View Post

Guys, I following the specific guide for my mobo I linked earlier, I increased the Additional Turbo Voltage setting by 0.036 and this seems to have stabilized the 40 multi overclock. I'm now testing the 41 one and will keep on going like this. If I run into any problems i'll post again, but for now it seems that the problem is solved: looks like it was bad configs after all!

Thank you very much for your help everyone!
The two Corsair sticks are in one channel, with the Kingston one physically in-between the two corsairs on the other channel. All parameters match up perfectly except for the highlighted one and the one below it: http://prntscr.com/8vd0uk

Is that cause to worry?

Congrats on figuring it out smile.gif Sorry I didnt think of additional Turbo voltage as a feature, my Asus Z77 board doesnt have it so it didnt come to mind.

As far as the secondary and tertiary RAM timings go I dont know if that will be a problem for you. If you find that your getting RAM related BSOD/freezes now you know where to start looking though.

If you Fold on your CPU it might cause some problems with certain units, I know my RAM was quite happy at 2400 C11 until I started failing some folding units and had to investigate. It worked fine for the best part of a month before it started kicking out failed units and errors and I had to tune it to the timings I have in my sig, its been rock solid since for almost 6 months now.
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