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I5 750 cannot exceede 160 BCLK. Many problems ruled out. - Page 4

post #31 of 33
Quote:
Originally Posted by pencil364 View Post
This is extremely curious - I just went and tried to hit 4.1GHz again (something I've done before) for this Foldathon. I ran into EXACTLY the same problem that you're having now... My BCLK doesn't want to work over 200MHz... Another curious thing, I also have three sticks of DDR3... I'm gonna try popping one out and see what happens.
Do you have the Clockgen Switch Enabled in the Bios?
post #32 of 33
Hmm Macgyver - I am not coming up with much on this issue - I did see you posted on the EVGA Forums so hopefully someone can help out. In researching this it does seem 4 sticks of ram does cause issues on occasion - with actually ASUS Boards having the most problems.

In general it seems bumping Vtt and VDimm takes care of the issue, yet not for you. The three other items I see mentioned are -

1. Loosening the screws on your CPU cooler a bit. Not sure why, PCB Deflection?

2. Adjust your CPU Skew. It's in the Bios, I found one user who utilized a setting of 200 and claimed it saved his OC.

3. Bad Stick Of Ram, which you say you have checked.

I am lost ATM, but will continue to look around and post if I should find something of value.
post #33 of 33
Thread Starter 
Alright guys, you really aren't going to believe this...

It's hard to believe but I actually got the system to boot with all 4 sticks. How I did it I still do not understand.

Knowing it was unhealthy and possibly hardware damaging, I raised the Voltages to much higher specifications than would be recommended for even 1 hour, much less 24 / 7. I raised Vcore to about 4.0, DIMM to about 1.9, VTT to about 1.45, PCH to 1.125 and PLL to 1.9.

I reboot with just 2 sticks to see if it would even turn on and it did.

I decided to throw in the other 2 sticks, bringing the total to 4, and hit power button. To my amazement, it worked.

Before getting into Windows 7 I jumped into Bios again to make sure all of the RAM was reporting. It was. I then decided that if this is going to be an actual solution, I need to step down some of these Voltages and narrow down the problem. I started with Vcore, continued to DIMM and ended at PLL.

To my shock, the computer booted after all voltages were returned to what is listed above.

WHAT?!

I'm not sure exactly why that is, I can hypothesize, but really it's going to take some research to figure out what happened.

My recommendation to anyone else having this issue (and specifically this issue, be warned that raising your voltage settings too far can damage your components) is to first follow all of the other advice you get from Overclocking guides, and when all else fails raise up your voltages past where you are comfortable, and slowly tick down to find out what is stable.


Tomalak -Thank you very much for putting me in the right direction! I considered taking out 2 sticks to see if it was the problem in the past, but I thought to myself that even if it did boot with 2 sticks, the problem was bigger than that. Turns out I was wrong!

Steak House - I found a lot of good info on EVGAs forums so thanks for pointing me there. Also, thank you very much for continuing to research this problem, even now im not sure exactly what happened! If I do figure it out I will let you know.

pencil364 - Thanks for continuing to contribute! It was nice to know that I wasn't the only one having this issue. Looking for solutions on the internet left me feeling quite lonely!

Thanks to everyone else who posted, I cant tell you all how annoying this problem has been.
Macgyver PC
(12 items)
 
  
CPUMotherboardGraphicsRAM
I7 2700K @ 4.7ghz (1.3V)  ASUS P8Z68-V/GEN3 GIGABYTE GTX 560ti 16gb Corsair Vengeance DDR3 1600mhz 
Hard DriveOSMonitorKeyboard
Samsung SSD 830 256gb Windows 7 64 bit Dell Ultrasharp 24" Steelseries 6gv2 
PowerCaseMouseMouse Pad
Corsair 650TX 650W 80Plus Antec 1100 Logitech G5 Everglide Titan 
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Macgyver PC
(12 items)
 
  
CPUMotherboardGraphicsRAM
I7 2700K @ 4.7ghz (1.3V)  ASUS P8Z68-V/GEN3 GIGABYTE GTX 560ti 16gb Corsair Vengeance DDR3 1600mhz 
Hard DriveOSMonitorKeyboard
Samsung SSD 830 256gb Windows 7 64 bit Dell Ultrasharp 24" Steelseries 6gv2 
PowerCaseMouseMouse Pad
Corsair 650TX 650W 80Plus Antec 1100 Logitech G5 Everglide Titan 
  hide details  
Reply
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