jliles01

ChronicXX, or anyone actually. I need some advice for fine tuning my OC. Posting my template below.

With these settings, I successfully ran P95/blend for 10 hrs and 50 runs of LinX/all memory. Seem to be stable.  I'm happy with this speed, but would like to fine tune and maybe help with temps.

What I've done and results:
1) Slowly brought Vcore down, running 10 runs of LinX between tweaks. No problems until I got to 1.225V and then it BSOD. I failed to write down the error.
2) Went back up to 1.250V and it ran 10 runs of LinX with no problem for the 2nd time (did it while tweaking down also).
3) When I tried to run LinX @ 50 times, it gave me an error about 2-1/2 hours (+/- 35 runs) into the test.
4) I remember reading in the guide that an error this far into the test could mean my VTT voltage was low, so I stepped it up a notch to 225mV. Set up a LinX run and it BSOD after about 5 minutes. Once again, I didn't record the error. ( I have to learn to do that)
5) I went back to original settings (template) and decided to ask for help here.

I thought going up one notch on VTT might either fix the problem, or make it last longer before LinX gave an error. I wasn't expecting the BSOD.

Throughout all of this, my temps were normal (for me). 73-80 across all 4 cores. If you remember, I posted here a week or so ago about my temps being in the mid 80's. They've come down 6-7 degrees since the AS5 cured. I wasn't watching during the last test, so I don't know what the temps were before the last BSOD.

Since I seem to be stable at the current settings (50 runs LinX/10 hrs P95), should I leave well enough alone? Or is there room for some fine tuning with the voltages and maybe bring the temps down a few more degrees?

Something else I tried along a different line. I set my multiplier to 19X (heard odd numbers more stable), my base freq to 190 (to match the 3.6 OC I had at 175 X 20) and Turbo to off (actually BIOS turned it off). Left voltages at stock. LinX only lasted about 2 minutes before error. I didn't pursue this line any more.

Thanks for any advice.

CURRENT SETTINGS

Frequency Control
CPU Clock Ratio ( 20X )
CPU Host Frequency (Mhz) ( 175 )
MCH Strap ( Auto )
CPU Uncore Frequency (Mhz) ( 2805 / 16X )
CPU Clock Skew ( 0 ps )
Spread Spectrum ( Disabled )
PCIE Frequency (Mhz) ( 100 )

Memory Feature
Memory Speed ( STD )
Memory Control Setting ( Enabled )
Memory Frequency ( 1067 / 2:8 )
Channel Interleave Setting ( 6 Way )
Rank Interleave Setting ( 4 Way )
Memory Low Gap ( Auto )
tCL Setting ( 8 )
tRCD Setting ( 8 )
tRP Setting ( 8 )
tRAS Setting ( 24 )
tRFC Setting ( 88 on auto )
Command Rate ( 1T )


Voltage Control
EVGA VDroop Control ( With VDroop )
CPU VCore ( AUTO / 1.28125 )
CPU VTT Voltage ( +200mV )
CPU PLL VCore ( AUTO/1.8V )
DIMM Voltage ( 1.65 )
DIMM DQ Vref ( AUTO/+0mV )
QPI PLL VCore ( AUTO/1.1V )
IOH VCore ( Auto/1.1V )
IOH/ICH I/O Voltage ( Auto/1.5V )
ICH VCore ( Auto/1.05V )
*PWM Frequency ( 800Khz )


CPU Feature
Intel SpeedStep ( Disabled )
Turbo Mode Function ( Enabled )
CxE Function ( Disabled )
Execute Disable Bit ( Enabled )
Virtualization Technology ( Disabled )
Intel HT Technology ( Enabled )
Active Processor Cores ( All )
QPI Control Settings ( Enabled )
QPI Link Fast Mode ( Enabled )
QPI Frequency Selection (4.8 GT/s )
OC Recovery ( Disabled )
Turbo Performance (  )

PnP/PCI     PCI Express
Maximum Payload Size ( 256 )

Power Management Setup
ACPI Suspend Type ( S1 ) 
HPET Support (  )   
HPET Mode (  )

jliles01

Thanks for the reply, Chronic

I started a thread here with my latest & greatest OC:
http://forums.evga.com...spx?m=161553&high=

I'm going to stay where I'm at for the time being while I work on my temp problem.

I have an H50 ordered to try to solve my temp problem. I also ordered a 40mm fan to try and mount by my Vreg to try and cool it down a little from the 75C I'm getting.

But just so I understand things properly----. My VDIMM is at 1.65, and using an E758 my VTT shouldn't go below 1.15V, to keep that maximum .5V difference. So my VTT setting shouldn't be less than +.05. Is this correct?

When I set my VDIMM, BIOS automatically set my VTT @+200. I just left it there, and then when I tried to fine tune I worked from that setting, thinking I needed more.

When/if I try to go higher, after solving the temp problem, I'll drop my VTT and try again. That is if I understand it as stated above.

Your guide has been invaluable. Thanks a lot.