- Joined
- Mar 25, 2011
- Messages
- 24
So, any advice on voltage adjustments for my i7 970? I've pretty much got most of this overclocking thing down already, but the voltage settings are still throwing me off.
So far, I've gotten things up to 4.3GHz with a BCLK of 189 (23x CPU) without too many problems, but the only voltage settings I've been changing are QPI/Vtt and the DRAM settings, while leaving the rest on auto. I'm pretty sure I may have overlooked something. Other items, such as the Vcore, CPU PLL and IOH core, I've been leaving untouched at the auto setting with their default values.
Here's what I have so far:
- CPU Core Features -
Turbo [disabled]
CPU Cores enabled [all]
CPU Multithreading [enabled]
CPU halt C1E [disabled]
C3/C6/C7 State [disabled]
CPU Thermal [disabled]
CPU EIST [disabled]
ProcHot [disabled]
- Frequency settings -
CPU Clock [23x]
CPU Freq 4.34GHz (189x23Z)
QPI Clock [36x]
QPI Link 6.80GHz
Uncore Clock [x12]
Uncore Freq 2.268GHz
BCLK 189MHz
Memory [8.0x]
Mem Freq 1.512GHz
PCI Exp Freq [auto]
CPU Clock Drive [800mv]
PCIe clock drive [900mv]
CPU clock skew [ 0ps]
IOH clock skew [ 0ps]
- MB voltage Control -
>>> CPU
Load-Line Calibration [standard]
CPU Vcore 1.22500v [auto]
DVID +0.00000v [auto]
QPI/Vtt 1.17500v [1.25500v]
CPU PLL 1.80000v [auto]
>>> MCH/ICH
PCIE 1.50000v [auto]
QPI PLL 1.10000v [auto]
IOH Core 1.10000v [auto]
ICH I/O 1.50000v [auto]
ICH Core 1.10000v [auto]
>>>DRAM
DRAM 1.50000v [1.62000v]
Term 0.75000v [0.81000v]
Data Vref 0.75000v [0.81000v]
Addr Vref 0.75000v [0.81000v]
It's been confusing trying to look for reliable info on the web because its either specific to certain processessor/motherboard combos, or so general that some settings either don't apply to my setup, or they would be too excessive for a 32nm chip in some areas.
There's also this one rule where one setting has to be within .5v of another, or else you might fry the CPU. (QPI/Vtt and DRAM?)
Anyway, I could certainly use some advice on this, so I can move past the 4.3GHz barrier I'm currently facing. Given that I'm only at about 67°C under full load at this speed, I definitely have some room to work with yet.
Back when I was briefly running the system at 4.5GHz, I was just letting the motherboard handle this stuff by itself by having everything on auto, but it wasn't exactly reliable under a full load. Now that I know better, I'd prefer to know exactly what's going on under the hood so i don't end up with a dead system...
So far, I've gotten things up to 4.3GHz with a BCLK of 189 (23x CPU) without too many problems, but the only voltage settings I've been changing are QPI/Vtt and the DRAM settings, while leaving the rest on auto. I'm pretty sure I may have overlooked something. Other items, such as the Vcore, CPU PLL and IOH core, I've been leaving untouched at the auto setting with their default values.
Here's what I have so far:
- CPU Core Features -
Turbo [disabled]
CPU Cores enabled [all]
CPU Multithreading [enabled]
CPU halt C1E [disabled]
C3/C6/C7 State [disabled]
CPU Thermal [disabled]
CPU EIST [disabled]
ProcHot [disabled]
- Frequency settings -
CPU Clock [23x]
CPU Freq 4.34GHz (189x23Z)
QPI Clock [36x]
QPI Link 6.80GHz
Uncore Clock [x12]
Uncore Freq 2.268GHz
BCLK 189MHz
Memory [8.0x]
Mem Freq 1.512GHz
PCI Exp Freq [auto]
CPU Clock Drive [800mv]
PCIe clock drive [900mv]
CPU clock skew [ 0ps]
IOH clock skew [ 0ps]
- MB voltage Control -
>>> CPU
Load-Line Calibration [standard]
CPU Vcore 1.22500v [auto]
DVID +0.00000v [auto]
QPI/Vtt 1.17500v [1.25500v]
CPU PLL 1.80000v [auto]
>>> MCH/ICH
PCIE 1.50000v [auto]
QPI PLL 1.10000v [auto]
IOH Core 1.10000v [auto]
ICH I/O 1.50000v [auto]
ICH Core 1.10000v [auto]
>>>DRAM
DRAM 1.50000v [1.62000v]
Term 0.75000v [0.81000v]
Data Vref 0.75000v [0.81000v]
Addr Vref 0.75000v [0.81000v]
It's been confusing trying to look for reliable info on the web because its either specific to certain processessor/motherboard combos, or so general that some settings either don't apply to my setup, or they would be too excessive for a 32nm chip in some areas.
There's also this one rule where one setting has to be within .5v of another, or else you might fry the CPU. (QPI/Vtt and DRAM?)
Anyway, I could certainly use some advice on this, so I can move past the 4.3GHz barrier I'm currently facing. Given that I'm only at about 67°C under full load at this speed, I definitely have some room to work with yet.
Back when I was briefly running the system at 4.5GHz, I was just letting the motherboard handle this stuff by itself by having everything on auto, but it wasn't exactly reliable under a full load. Now that I know better, I'd prefer to know exactly what's going on under the hood so i don't end up with a dead system...