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Bring down the volts?

post #1 of 17
Thread Starter 
Was hoping that with some fine tuning to my overclock (it's somewhat brutish right now) I could bring down either my vTT (QPI/DRAM) or my vCore.

Any help would be wonderful. Here's my BIOS template:

****************************
AI Tweaker
****************************

Ai Overclock Tuner........... = [Manual]
CPU Ratio Setting............ = [23.0]
Xtreme Phase Full Power Mode. = [Enabled]
BCLK Frequency............... = [192]
PCIE Frequency............... = [100]
DRAM Frequency............... = [1930 Mhz]
UCLK Frequency............... = [3860 Mhz]
QPI Link Data Rate........... = [6946 GT/s]

CPU Voltage Control.......... = [Manual]
CPU Voltage.................. = [1.4125]
CPU PLL Voltage.............. = [AUTO]
QPI/DRAM Core Voltage........ = [1.4]
IOH Voltage.................. = [1.36]
IOH PCIE Voltage............. = [AUTO]
ICH Voltage.................. = [AUTO]
ICH PCIE Voltage............. = [AUTO]
DRAM Bus Voltage............. = [1.65]
DRAM DATA REF Voltage on CHA. = [Auto]
DRAM CTRL REF Voltage on CHA. = [Auto]
DRAM DATA REF Voltage on CHB. = [Auto]
DRAM CTRL REF Voltage on CHB. = [Auto]
DRAM DATA REF Voltage on CHC. = [Auto]
DRAM CTRL REF Voltage on CHC. = [Auto]

Load-Line Calibration........ = [Disabled]
CPU Differential Amplitude... = [AUTO]
CPU Clock Skew............... = [Normal]
CPU Spread Spectrum.......... = [Disabled]
IOH Clock Skew............... = [Normal]
PCIE Spread Spectrum......... = [Disabled]

C1E Support.................. = [Disabled]
Hardware Prefetcher.......... = [Enabled]
Adjacent Cache Line Prefetch. = [Enabled]
Intel(r) Virtualization Tech. = [Enabled]
CPU TM Function.............. = [Enabled]
Execute Disable Bit.......... = [Enabled]
Intel(r) HT Technology....... = [Disabled]
Active Processor Cores....... = [All]
A20M......................... = [Disabled]
Intel(r) SpeedStep(tm) Tech.. = [Enabled]
Intel(r) C-STATE Tech........ = [Disabled]

*******************
DRAM Timing Control
*******************

1st Information:
DRAM CAS# Latency............ = [9]
DRAM RAS# to CAS# Delay...... = [9]
DRAM RAS# PRE Time........... = [9]
DRAM RAS# ACT Time........... = [24]
DRAM RAS# to RAS# Delay...... = [AUTO]
DRAM REF Cycle Time.......... = [AUTO]
DRAM WRITE Recovery Time..... = [AUTO]
DRAM READ to PRE Time........ = [AUTO]
DRAM FOUR ACT WIN Time....... = [AUTO]
DRAM Back-To-Back CAS# Delay. = [AUTO]

2nd Information:
DRAM Timing Mode............. = [2N]
DRAM Round Trip Latency on CHA = [AUTO]
DRAM Round Trip Latency on CHB = [AUTO]
DRAM Round Trip Latency on CHC = [AUTO]

3rd Information:
DRAM WRITE To READ Delay (DD) = [AUTO]
DRAM WRITE To READ Delay (DR) = [AUTO]
DRAM WRITE To READ Delay (SR) = [AUTO]
DRAM READ To WRITE Delay (DD) = [AUTO]
DRAM READ To WRITE Delay (DR) = [AUTO]
DRAM READ To WRITE Delay (SR) = [AUTO]
DRAM READ To READ Delay (DD) = [AUTO]
DRAM READ To READ Delay (DR) = [AUTO]
DRAM READ To READ Delay (SR) = [AUTO]
DRAM WRITE to WRITE Delay (DD)= [AUTO]
DRAM WRITE to WRITE Delay (DR)= [AUTO]
DRAM WRITE to WRITE Delay (SR)= [AUTO]
Edited by MiskatCitnamor - 1/26/11 at 8:22am
Neo Maki
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Neo Maki
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post #2 of 17
i dont know about intel, but isnt that vcore is a bit high for intel?
    
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post #3 of 17
Thread Starter 
I think it's slightly above average. The BIOS setting for vCore is 4.125 but CPU-Z detects 4.08v under load (4.0v idle.)

AUS AI detects the same.

Either way, if there are any tricks I can employ to bring down vCore... something with more finesse. I want to keep my 100% stability (20 pass LinX run is fine, for me) while getting vCore and vTT down so hopefully my temps will come down, as well.

Trying for a more efficient 4.4ghz 24/7 overclock. Once I nail that down I'll move on to trying a 4.6ghz stable overclock. That's another matter, entirely. May not even be possible.
Neo Maki
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Neo Maki
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post #4 of 17
Thread Starter 
Bump for ideas and suggestions. If nobody has any ideas, this thread will instead be about my attempts to get a stable 4.6ghz overclock.
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Neo Maki
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post #5 of 17
Thread Starter 
Hmm... Roflolol being able to get his 950 to 5ghz at least long enough to validate has made me want to try, but above 1.5v vCore I can't even get the system to boot. Highest frequency I could boot into was 4.5.

4.8 would post but not get into windows. The signal to my monitor would disappear as soon as loading windows was attempted.
Any other attempt wouldn't even post.

Now going back into my stable frequency of 4.41ghz, running IBT is producing a 0x1E BSOD at the same voltage I was stable at previously. Damn, I'm afraid I might have wrecked my chip.

Conversely, instead of increasing vCore like 1E calls for, I upped CPU PLL to 1.88 and my IOH to 1.4 and now it seems stable again.

Interesting. Maybe I can even lower me vCore now?Hmm... Roflolol being able to get his 950 to 5ghz at least long enough to validate has made me want to try, but above 1.5v vCore I can't even get the system to boot. Highest frequency I could boot into was 4.5.

4.8 would post but not get into windows. The signal to my monitor would disappear as soon as loading windows was attempted.
Any other attempt wouldn't even post.

Now going back into my stable frequency of 4.41ghz, running IBT is producing a 0x1E BSOD at the same voltage I was stable at previously. Damn, I'm afraid I might have wrecked my chip.

Conversely, instead of increasing vCore like 1E calls for, I upped CPU PLL to 1.88 and my IOH to 1.4 and now it seems stable again.

Interesting. Maybe I can even lower me vCore now?

EDIT: Nope, IBT failed after 3 passes. Damn.

Yeah... looks like I damaged it. I'm not sure exactly how badly, but I'm needing MORE vCore for stability now than I was before. Damn. Well, school of hard knocks. Live and learn.

I guess I'll find a conservative, stable, overclock in the 4.0ghz-4.2ghz range... and wait awhile before I go use my MicroCenter 3 year replacement plan to do a swap.

Then again, they might not HAVE 950s at that time.
Edited by MiskatCitnamor - 1/26/11 at 8:20pm
Neo Maki
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Neo Maki
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post #6 of 17
all chips degrade you just speeded yours up overclocking, i have mine too, meh its a reason to upgrade.
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post #7 of 17
Thread Starter 
I hear that. I can still get it replaced by MicroCenter... maybe I'll even get lucky and get a better binned 950.

EDIT: Whoo. Got it stable at 4.41ghz again. Had to bump the vCore up two notches. CPU-Z now reads at 1.416 at full load.

Could be worse!

Question is, do I take this as a sign and chuck my still remaining desires to push the limits?

Hmm...
Edited by MiskatCitnamor - 1/27/11 at 6:27am
Neo Maki
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Neo Maki
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post #8 of 17
Quote:
Originally Posted by MiskatCitnamor View Post
I hear that. I can still get it replaced by MicroCenter... maybe I'll even get lucky and get a better binned 950.

EDIT: Whoo. Got it stable at 4.41ghz again. Had to bump the vCore up two notches. CPU-Z now reads at 1.416 at full load.

Could be worse!

Question is, do I take this as a sign and chuck my still remaining desires to push the limits?

Hmm...
1.4V for a stable 4.4GHz isn't really that bad at all, to be honest. Your QPI voltage at 1.4V is also good. The only sign I would take that as is your chip is a good one.

As long as your temps are good, I think you're good right there.

p.s. I noticed you have SpeedStep still enabled. Was that intentional?
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post #9 of 17
Thread Starter 
I re-enabled speedstep because my overclock had proven stable... Now that you mention it, that would explain the chips desire for more vcore wouldn't it? I'll turn it off and lower my vcore back down and run some more stress tests. Thanks!
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Neo Maki
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post #10 of 17
Thread Starter 
Brilliant! Disabled Speedstep and tried stressing my CPU at my old vCore and it's stable again! Thank you!

Wish I had remembered that I had enabled that. Thank you again.

EDIT: I got too excited too quick. Tried a 5.3gb LinX 50 pass run and gota 0x101 BSOD within minutes. *sigh* Guess 1.416 might have to be my new vCore for 24/7 use. =/
Edited by MiskatCitnamor - 1/27/11 at 8:11pm
Neo Maki
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Neo Maki
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