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1,551 Posts
Originally Posted by remedyplugin View Post


I'm new to this forum. Can anyone help me find some stable settings to oc my proc to 3.4-3.6Ghz?

I have:

ATX 620W Corsair HX (CMPSU-620HXEU)
GigaByte GA-EX58-UD5
CORE I7- 920, 2.660 GHz 8MB, LGA1366 BOX
Kingston HyperX DDR3 12GB 9-9-9-27 at 1.65V
Cooler Master V8

I'll try to find another hd4870 to combine it together : )


Tnx in advance!!
This is a very old (yet still relevant) thread. For a post like that though, I would have made my own thread.

Anyway, it seems like you might need to up a little more VCore to get higher, you're still pretty close to stock.
Also, try turning your ram performance down, so you know for a fact they are not bottlenecking you. Same with your NorthBridge (aka uncore)
Also, check out this thread: http://www.overclock.net/t/538439/guide-to-overclocking-the-core-i7-920-or-930-to-4-0ghz

· Registered
1 Posts
I actually have pretty much the same setup as you but with a 6970 gpu and ex58-ud4

if you are new to things you can get quite a decent boost to 3.2ghz by downloading the gigabyte software for your motherboard from the gigabyte site (not sure i can post links to other sites here but if you google it you can get it from the gigabyte site) - its called easytune 6

You basically choose the type of oc you want by pressing one of 3 buttons, your pc will reboot and apply the settings needed

I am still very new to things and have my 920 running at 3.5, anything higher causes the system to lock up and blue screen so any help would be greatly appreciated - i will post back later on when i am at home what my settings are - i would ideally like to get to 4.0ghz



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54 Posts
I doubt you're going to get very far on air. Best I could do on my V8+i7 920 C0 was 3.7Ghz (177x21 at 1.2875V). but that was on a different mobo.

@remedyplugin, you might want to start with getting to around 3.4 GHz first. 3.36 = 21 x 160 (which is a pretty good start). start by bumping the voltage up to 1.25V, then use IBT and test for stability.
it looks like you have XMP profiles so you can load that if you want. not quite sure about that though...i manually configured mine. otherwise, just set them as they are rated and don't worry too much about it.

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1 Posts
I see that this is an old thread but hope someone will stop by and offer their thoughts. I've recently retweaked the BIOS on my Asus P6T Deluxe V2 for my i7 920 D0 processor. My RAM is Corsair Dominator 6GB (3x2GB) DDR3 1600 (PC3 1600). I'm air cooled with a Prolematec Mega Shadow Deluxe. My idle temps are 44-44-45-42 with a room ambient temp of approx. 23c. I know it's short and not nearly a complete test but running 10 minutes OCCT's Medium Data Set my highest temps are 66-66-65-63. I used this time and set because my most strenuous program is Microsoft's Flight Simulator FS9 with a number of add-ons. It doesn't appear to tax the system more than what I've tested.

My overclock is right at 3.8 - in fact almost exactly there at 3799.9 to 3800.1. So this is my question. Looking at my BIOS settings do you see anything that NEEDS to be changed for processor or memory sake, or that I might be able to tweak to go a bit higher in clock? Or, should I leave well enough alone and be satisfied with the numbers I have?


AI Overclock Tuner: XMP
Profile Info: 1600MHz-8-8-8-24-2N-1.65V-1.35V
CPU Ratio: 20
Turbo Boost: Disabled
BLCK Freq: 190
PCIE Freq: 100
DRAM Freq: DDR3-1523MHz
UCLK Freq: Auto
QPI Link Data Rate: Auto

DRAM Timing Control: no changes made

CPU Voltage: 1.225V
CPU PLL Voltage: Auto
QPI/DRAM Core: 1.26875V
IOH Voltage: Auto
IOH PCIE Voltage: Auto
ICH Voltage: Auto
ICH PCIE Voltage: Auto
DRAM Bus Voltage: 1.64V
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: Auto
CPU Spread Spectrum: Auto
IOH Clock Skew: Auto
PCIE Spread Spectrum: Disabled

Thanks guys!!!!

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2 Posts
I just get my i7 920 to 20% overclock. (No Voltage Changes)

I only touch the Host Frequency Clock (BCLK) from 133 to 160. I didn't modify the voltages, Vcore is in auto and the max Vcore I get is 1.219v (CPU-Z). I did change QPI Data Rate (QPI Frequency) from auto (4.8GT/s) to manual 4.8GT/s.

I also let Turbo Boost ON, because the voltages are default and I don't see any problems on let it ON (People says that it changes the manual set voltages and is better to disable it).

Full details:
BCLK (HFC, Bus Speed) = 160Mhz (20% From Default)
Core Voltage: Auto (Default) (Max ≈ 1.219v)
Core Speed ≈ 3364 MHz
Multiplier: Auto (x21.0)
QPI Data Rate = 4.8GT/s
Turbo Boost: Enabled
C1E: Enabled
HyperThreading: Enabled
Memory: Corsair Vengeance DDR3 2x4GB 1600Mhz (Auto)
Temps: Idle = 45ºC; Normal Use = 47ºC to 53ºC; Stress Test (Prime95, Small FFTs) = 75ºC(max).
Room Temp ≈ 27ºC
Cooler System: Hydro Series™ H60 High Performance Liquid CPU Cooler - Corsair

So far the pc is stable, temps are only 5 to 10ºC more than system Defaults. But I don't know if these changes can harm my computer in long term.


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81 Posts
Hi, I have an issue regarding my RAM running my 3,82 GHz OC on my C0 revision chip. (181 x21)
I can only get my 1600 MHz to the 1470 Mhz mark, the next level I can set it to is around 1800 MHz, but then my computer won't even POST when I try to do that, and I would like to get what I paid for when I bought that RAM, I just get a "cannot set overclock" message at boot. The RAM is set to 1.65 volts. What can I do to be able to get my RAM higher?
I can provide more accurate numbers when I come home.

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2 Posts
ok im completely new to the whole forum/posting thing and this is officially my first post ever so sorry if i got it wrong haha. I looked all over and wasn't sure if I should post here or if I am supposed to make a new forum or something so I thought id just give it a go an see what happens. basically my set up is as follows:

HAF 932 case
i7 950 @ 3.8ghz (so far)
Sabertooth X58 mobo
16gb Ripjaw 2133Mhz ram (running 1724Mhz)
the watercooling setup out of a thermaltake armor lcs case
two radeon 7970's in crossfire clocked at 1100/1500
Corsair AX1200i psu (brand new today!!)

my issue is two things, firstly i managed a stable clock of 180 with a multiplier of 21 but suffered a huge drop in gpu performance which i think is because i couldnt set my QPI link data rate any higher than "slow mode" . so what would stop me being able to raise it ?? and how does that effect the gpu performance so much ??

secondly i now have a stable clock of 172 with a multiplier of 22 and the QPI is one up from the lowest which is 6208mt/s and my voltages are as follows:

CPU voltage : 1.22500
CPU PLL Voltage : 1.86
QPI/DRAM Core Voltage: 1.3
DRAM Bus Voltage: 1.62
the rest are at either auto or their lowest settings

im now trying to get 4ghz and managed to get a stable boot with a cpu voltage of 1.23750 BUT i get a blue screen after 3 minuets of prime 95 on the maximum heat setting but my max temps are 68 so far so i was wondering what i could do to get a stable 4ghz out of my system because im sure its possible ??

and again im sorry if iv posted wrong please direct me accordingly if i have thanks

· Registered
449 Posts
Pretty straight forward overclocking the i7 just keep bumping the vcore when you bsod is what I did to get 4.0GHz on air.

My current setup has lasted me such a long time, I am glad these first gen i7 can be pushed to far remember buying the 920 at Microcenter because it cost $200.

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