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I5 750 cannot exceede 160 BCLK. Many problems ruled out. - Page 3

post #21 of 33
Thread Starter 
Steakhouse - Thank you very much! That is excellent info and I will test out what my system does with that disabled.

Let me know what you discover!
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post #22 of 33
Steak House has it right. The "double pump" boot is a normal safety feature although it is annoying. It can be disabled by disabling clockgen as long as you are under 200 on the base clock.

The boot loop issues have been beat to death on the EVGA forums so you can likely find much information on the issues there without much trouble. It is my understanding that it was fixed in a BIOS update. I haven't had cause to dig too deep into the issue simply because I've never had those problems with the A72 BIOS that I'm running.
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post #23 of 33
I am beginning to think it wasn't an update (although some older Bios did work on this issue) but rather increasing Vtt & VDimm that took care of this issue - I seem to recall another user relaying this in a forum thread at EVGA. I am around a 1.25 Vtt and 1.65 VDimm on both boards. If you do not figure it out, please start a thread at the EVGA forum (P55) - I am certain this is something minor.
post #24 of 33
Thread Starter 
Great! I will check this out as well. I have a lot of things to try and will post the results ASAP. If anyone else has additional insight please let me know!
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post #25 of 33
Thread Starter 
*UPDATE*

I am home now and have tested a few things. First off, I tried the overclock with only 2 sticks of 2GB RAM each. I applied an overclock of 200X20, as I had before, and WA LA! It worked fine. It did the Boot - Shut down - Boot normally again, but that is simply a setting in BIOs I can disable.

So, this means that this problem is coming from having 4 sticks of 2gigs of RAM each. now, where do I go from here? I'm happy to have nailed down the problem but I'm extremely unsure of how to proceed.

I want to think this has to do with Vdimm / VTT voltages, but as I have tested these and pushed them to their limits to no avail. There must be a setting of some kind I am missing.

To reiterate, the RAM sticks work fine, I have tested each individually. Also, the RAM slots are also fine as I can get 8gb of RAM with NO processor overclock.

So, where do I go?

Thank you in advance for you replies!
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post #26 of 33
What are your VDimm & Vtt at?

On my i5 - P55 LE - I do have 4 sticks of GSkill - 2GB Each - No issues.

Also - what are your ram timings?
post #27 of 33
Thread Starter 
Alrighty,

DRAM frequency: 2:8 (1600mhz)
Timings: 9-9-9-24
CAS: (9)

MCH Strap: 1600MHZ
Vcore: 1.35
DIMM Voltage: 1.65
CPU VTT: 1.25
PCH: 1.050
CPU PLL: 1.8

Now, keep in mind, this works great with my 2 sticks of DDR3. The problem arises when I put the other 2 stick of 2GB each into the system. After I do that the system does not post and goes into an infinite loop. I've tried upping the VTT to 1.35 and even 1.4 to no effect. I've also tried uping the PLL to 1.9 and the PCH to 1.125, also, no help.

What to you think?
Edited by Macgyver321 - 3/21/11 at 7:32pm
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Macgyver PC
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Samsung SSD 830 256gb Windows 7 64 bit Dell Ultrasharp 24" Steelseries 6gv2 
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post #28 of 33
Quote:
Originally Posted by Macgyver321 View Post
Alrighty,

DRAM frequency: 2:8 (1600mhz)
Timings: 9-9-9-24
CAS: (9)

MCH Strap: 1600MHZ
Vcore: 1.35
DIMM Voltage: 1.65
CPU VTT: 1.25
PCH: 1.050
CPU PLL: 1.8

Now, keep in mind, this works great with my 2 sticks of DDR3. The problem arises when I put the other 2 stick of 2GB each into the system. After I do that the system does not post and goes into an infinite loop. I've tried upping the VTT to 1.35 and even 1.4 to no effect. I've also tried uping the PLL to 1.9 and the PCH to 1.125, also, no help.

What to you think?
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.
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post #29 of 33
No dice. I'm starting to lose faith in all things computing now...
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24/7 Black Box
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post #30 of 33
Quote:
Originally Posted by Macgyver321 View Post
Alrighty,

DRAM frequency: 2:8 (1600mhz)
Timings: 9-9-9-24
CAS: (9)

MCH Strap: 1600MHZ
Vcore: 1.35
DIMM Voltage: 1.65
CPU VTT: 1.25
PCH: 1.050
CPU PLL: 1.8

Now, keep in mind, this works great with my 2 sticks of DDR3. The problem arises when I put the other 2 stick of 2GB each into the system. After I do that the system does not post and goes into an infinite loop. I've tried upping the VTT to 1.35 and even 1.4 to no effect. I've also tried uping the PLL to 1.9 and the PCH to 1.125, also, no help.

What to you think?
Hmm, this all looks good at first glance - do you have C1E, Speedstep & C-STATE turned off? (I am not sure why this would come in to play with this issue, just taking out the basics.)
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