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Old January 3, 2010, 09:39 PM
memeboy's Avatar
Join Date: Nov 2009
Posts: 5

My System Specs

Default New I7 920 D0 Build and OC

Hardware specs are:

Motherboard: Gigabyte EX58-UD3R
Processor: Intel Core i7 920 D0 w/ Noctua NH-U12P SE2
Memory: G.SKILL F3-16000CL9T-6GBTD Trident 3X2GB DDR3-2000 CL9-9-9-24
Video: Gigabyte Radeon HD 4890OC
HDD: Intel X25-M 160GB Postville SSD and Western Digital Caviar Black 4 X 640GB RAID 10 Array
PSU: Antec CP-850 with APC BACK-UPS Xs 1300VA 780W UPS
Case: Antec P183
Sound: ASUS Xonar Essence STX --> M-Audio IE-30 (Ultimate Ears SuperFi 5pro) IEM or Sennheiser HD 555
Optical: Samsung SH-S223B/BEBE 22X DVD+-RW
Monitor: Philips Brilliance 240PW9EB 24" IPS Panel
OS: Microsoft Windows 7 Professional Edition 64 Bit

Sorry the pic is a little hard to read, but I resized it with MS Paint for the image host.

Stepping: D0
MB Intelligent Tweaker (M.I.T):
CPU Clock Ratio [20x BIOS 21x w/ Turbo in Windows]
CPU Frequency [4.2GHz] [200x21]
QPI Link Speed [x36] [7.2GHz]
Base Clock Control [Enabled]
BCLK Frequency (Mhz) [200]
Performance Enhance [Standard]
System Memory Multiplier (SPD) [10.0]
Advanced Clock Control:
Base Clock (BCLK) Control [Enabled]
BCLK Frequency (Mhz) [200]
PCI Express Frequency (Mhz) [Auto]
Uncore & QPI Features:
QPI Link Speed [x36]
QPI Link Speed [7.2GHz]
Uncore Frequency [x20] [4000MHz]
Advanced CPU Features:
Intel Turbo Boost Tech. [Enabled]
CPU Cores Enabled [All]
CPU Multi Threading [Enabled]
CPU Enhanced Halt (C1E) [Disabled]
C3/C6/C7 State Support [Disabled]
CPU Thermal Monitor [Enabled]
CPU Eist Function [Disabled]
Virtualization Technology [Enabled]
Bi-directional PROCHOT [Enabled]
CPU Vcore 1.31250V
QPI/Vtt 1.515V
IOH Core 1.2V
DRAM Voltage 1.66V
Advanced Voltage Control:
Load-Line Calibration [Enabled]
CPU Vcore 1.31250V
QPI/Vtt Voltage 1.515V
CPU PLL 1.880V
PCIE [Auto]
QPI PLL [Auto]
IOH Core 1.200V
ICH I/O [Auto]
ICH Core 1.200V
DRAM Voltage 1.660V

My first OC since the days of the AMD T-Bred, but I think I did my research. Let me know what you think, or if you have ideas to tweak the settings. I'm looking for a 24/7 OC in the end, not to benchmark.

I may drop down to 4.0 GHz by turning off turbo to lower the vcore, it was running at 1.25v at that speed. The temps with that were in the low to mid 70s under Prime95 in-place large FTTs. 4.2 GHz hits 85C at max, closer to 81C average.

The Vtt is high at 1.5, but the uncore won't run at 4000 MHz without it or just below. That allows the memory to run at full speed at 8-9-8-20 timings.

The system did boot into Windows at 4.4 GHz, 220 bclk and 1.4 vcore if I remember correctly. I think it would be stable with more voltage (further boot past post with each bump in voltage), but 1.4v is the safe limit according to what I read.
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Old January 3, 2010, 10:01 PM
Arinoth's Avatar
Join Date: May 2009
Location: Halifax
Posts: 9,171

A lot of people don't like going over 1.4V for VTT as once you go above that you start to degregate the cpu more then regular over clocking. Overclocking and turning off hyper threading kind of defeats the purpose of having an i7 1366 board compared to an i5 1156 board.
Here I am: here I remain
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Old January 4, 2010, 12:36 AM
rjbarker's Avatar
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Join Date: Feb 2008
Location: Courtenay, B.C
Posts: 6,152

My System Specs


Overclocking and turning off hyper threading kind of defeats the purpose of having an i7 1366 board compared to an i5 1156 board.

Firestrike Extreme: 21.452
MARK 11: 32.530

Introducing me n my OCD to Watercooling, is like taking an Alcoholic to an "all you can drink" Beach Bar in Mexico

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Old January 4, 2010, 04:57 PM
memeboy's Avatar
Join Date: Nov 2009
Posts: 5

My System Specs


I want HT which is why I bought the i7 920 vs the i5 750. I could have gotten the i7 860, but the 1366 board lets me see what Intel's Gulftown will do for me.

I have HT on in my 1st post: CPU Multi Threading [Enabled], cores 4 threads 8 in the cpuid pic.

I decided to try the high Vtt because it was in a Gigabyte OC your I7 920 to 4GHz guide, that was an GA-EX58-EXTREME board but the chip is the same and my EX58-UD3R has decent cooling on the board itself for the NB at 4000 MHz. I'm assuming they know what is up.

Thanks for the info; do you happen to know where people were getting the information that "you start to degregade the cpu" from? If it is the same as the regular OC warning that your chip may not live as long as one not OC'd, I've accepted that.
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