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intel Q8400 maximum overclock

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Ok so it may not be the maximum possible,but its the best I can get stable with reasonable voltages on air.
The settings may be of intrest to C2Q owners.

I recently upgraded to Q8400($50 cost after selling my Q8200) , a bit faster and has Vm, + having a 4.0Ghz quad sounds better
nb the 3000 hrs is obviously using the Q8200.
Settings are for Gigabyte EP45-UD3 board

Intel Core 2 Quad settings for 1960-2000 mhz fsb
24/7 stable (3000 hrs+)

Q8400 and Q8200
4.0 or 3.5 Ghz(2000 fsb)
Code: 
MB Intelligent Tweaker(M.I.T.)
Robust Graphics Booster ...............: Fast
CPU Clock Ratio ..........................: 8x (x7 Q8200)
CPU Frequency ...........................: 4.0Ghz (500x8)


Clock Chip Control 
Standard Clock Control
CPU Host Clock Control..................: [Enabled] 
CPU Host Frequency (Mhz) ............: 500 Mhz
PCI Express Frequency (Mhz) .........: 100
C.I.A.2 .................................:[Disabled]


Advanced Clock Control [Press Enter]
CPU Clock Drive.........................: <<< 800mV
PCI Express Clock Drive.................: <<< 700mV
CPU Clock Skew (ps).....................: <<< 0ps
MCH Clock Skew (ps).....................: <<< 50ps


DRAM Performance Control
Performance Enhance...................: [TURBO]
(G)MCH Frequency Latch...............: [Auto]
System Memory Multiplier ..............: 2:00D
Memory Frequency (Mhz) ..............: 1000
DRAM Timing Selectable ................: [Manual]

Standard Timing Control
CAS Latency Time..............................5
tRCD ...............................................5
tRP'.............................................. ...5
tRAS.............................................. .15

Advanced Timing Control
tRRD.............................................. .3 [Auto]
tWTR.............................................. 3 [Auto]
tWR............................................... .6 [Auto]
tRFC.............................................. 54 [Auto]
tRTP.............................................. .3 [Auto]
Command Rate (CMD) .......................0 [Auto]

Channel A Timing Settings
Static tRead Value.........................: 9
tRD Phase0 Adjustment...................:0 Auto
tRD Phase1 Adjustment...................:0 Auto
tRD Phase2 Adjustment ..................:0 Auto
tRD Phase3 Adjustment...................:0 Auto

Trd2rd(Different Rank)....................:8 Auto 
Twr2wr(Different Rank)...................:8 Auto 
Twr2rd(Different Rank)...................:8 Auto 
Trd2wr(Same/Diff Rank)..................:9 Auto

Dimm1 Clock Skew Control...............:Auto
Dimm2 Clock Skew Control...............:Auto
DDR Write Training.........................:Auto

Channel A Driving Strength Profiles
Driving Strength ................... Auto


Channel B
Static tRead Value.........................: 9
tRD Phase0 Adjustment...................:0 Auto
tRD Phase1 Adjustment...................:0 Auto
tRD Phase2 Adjustment ..................:0 Auto
tRD Phase3 Adjustment...................:0 Auto

Trd2rd(Different Rank)....................:8 Auto 
Twr2wr(Different Rank)...................:8 Auto 
Twr2rd(Different Rank)...................:8 Auto 
Trd2wr(Same/Diff Rank)..................:9 Auto

Dimm1 Clock Skew Control...............:Auto
Dimm2 Clock Skew Control...............:Auto
DDR Write Training.........................:Auto

Channel B Driving Strength Profiles
Driving Strength ................... Auto

Motherboard Voltage Control
CPU
Load-Line Calibration.....................: Enabled
CPU Vcore….……….........................: 1.39375v(1.36V max cpuz)
CPU Termination….........................: 1.38v
CPU PLL………………….......................: 1.59v
CPU Referen.………….......................: 0.874v

MCH/ICH
MCH Core…………….........................: 1.42v 
MCH Reference……........................: 0.874v 
MCH/DRAM Ref…….........................: 1.09v 
ICH I/O……...................................: 1.57v 
ICH Core…….................................: 1.10v 

DRAM
DRAM Voltage ……..........................: 2.20V
DRAM Termination ……....................: 1.09V 
Channel A Reference…....................: 0.900v [Auto] 
Channel B Reference…....................: 0.900v [Auto] 

Advanced Settings
Limit CPUID Max. to 3.....................: [Disabled]
No-Execute Memory Protect............: [Enabled]
CPU Enhanced Halt (C1E)................: [Enabled]
CPU Thermal Monitor 2(TM2) ...........: [Enabled]
CPU EIST Function.........................: [Enabled]
Virtualization Technology................: [Enabled]


------------------------------------------------------
3.92 or 3.43 Ghz (1960fsb)


Code: 
MB Intelligent Tweaker(M.I.T.)
Robust Graphics Booster ...............: Fast
CPU Clock Ratio ..........................: 7x (x8 Q8400)
CPU Frequency ...........................: 3.43ghz (490x7)


Clock Chip Control 
Standard Clock Control
CPU Host Clock Control..................: [Enabled] 
CPU Host Frequency (Mhz) ............: 490 Mhz
PCI Express Frequency (Mhz) .........: 100
C.I.A.2 .................................:[Disabled]


Advanced Clock Control [Press Enter]
CPU Clock Drive.........................: <<< 800mV
PCI Express Clock Drive.................: <<< 700mV
CPU Clock Skew (ps).....................: <<< 0ps
MCH Clock Skew (ps).....................: <<< 50ps


DRAM Performance Control
Performance Enhance...................: [TURBO]
(G)MCH Frequency Latch...............: [Auto]
System Memory Multiplier ..............: 2:00D
Memory Frequency (Mhz) ..............: 980
DRAM Timing Selectable ................: [Manual]

Standard Timing Control
CAS Latency Time..............................5
tRCD ...............................................5
tRP'.............................................. ...5
tRAS.............................................. .15

Advanced Timing Control
tRRD.............................................. .3 [Auto]
tWTR.............................................. 3 [Auto]
tWR............................................... .6 [Auto]
tRFC.............................................. 54 [Auto]
tRTP.............................................. .3 [Auto]
Command Rate (CMD) .......................0 [Auto]

Channel A Timing Settings
Static tRead Value.........................: 9
tRD Phase0 Adjustment...................:0 Auto
tRD Phase1 Adjustment...................:0 Auto
tRD Phase2 Adjustment ..................:0 Auto
tRD Phase3 Adjustment...................:0 Auto

Trd2rd(Different Rank)....................:8 Auto 
Twr2wr(Different Rank)...................:8 Auto 
Twr2rd(Different Rank)...................:8 Auto 
Trd2wr(Same/Diff Rank)..................:9 Auto

Dimm1 Clock Skew Control...............:Auto
Dimm2 Clock Skew Control...............:Auto
DDR Write Training.........................:Auto

Channel A Driving Strength Profiles
Driving Strength ................... Auto


Channel B
Static tRead Value.........................: 9
tRD Phase0 Adjustment...................:0 Auto
tRD Phase1 Adjustment...................:0 Auto
tRD Phase2 Adjustment ..................:0 Auto
tRD Phase3 Adjustment...................:0 Auto

Trd2rd(Different Rank)....................:8 Auto 
Twr2wr(Different Rank)...................:8 Auto 
Twr2rd(Different Rank)...................:8 Auto 
Trd2wr(Same/Diff Rank)..................:9 Auto

Dimm1 Clock Skew Control...............:Auto
Dimm2 Clock Skew Control...............:Auto
DDR Write Training.........................:Auto

Channel B Driving Strength Profiles
Driving Strength ................... Auto

Motherboard Voltage Control
CPU
Load-Line Calibration.....................: Enabled
CPU Vcore….……….........................: 1.3625v (1.33V max cpuz)
CPU Termination….........................: 1.36v
CPU PLL………………….......................: 1.59v
CPU Referen.………….......................: 0.861v

MCH/ICH
MCH Core…………….........................: 1.38v 
MCH Reference……........................: 0.861v 
MCH/DRAM Ref…….........................: 1.03v 
ICH I/O……...................................: 1.57v 
ICH Core…….................................: 1.100v 

DRAM
DRAM Voltage ……..........................: 2.08V
DRAM Termination ……....................: 1.03V 
Channel A Reference…....................: 0.900v [Auto] 
Channel B Reference…....................: 0.900v [Auto] 

Advanced Settings
Limit CPUID Max. to 3.....................: [Disabled]
No-Execute Memory Protect............: [Enabled]
CPU Enhanced Halt (C1E)................: [Enabled]
CPU Thermal Monitor 2(TM2) ...........: [Enabled]
CPU EIST Function.........................: [Enabled]
Virtualization Technology................: n/a
__________________

These settings may or may not work with Q9450,Q9550,Q9650 cpu's,(higher power draw).
but they should be ok with lower Q9000 cpus.
Yes I know memory type makes a difference,and that some people are gonna say theyre running 1920 fsb and below with like 1.3V cpu core and 1.3vMCH.
Well gl to ya,these are settings I use for 1960-2000 .
The settings are actually what I need for 1980 and 2020 fsb ,and no i didnt just bang in a bit more v's for cpu mch and ram,there was testing for each setting :shock:
 
Last edited:
Cool.. thanks for the post. You may want to put that in the {code}{/code} box except with [] to make it smaller...

Also, while cookie cutter settings are great, it may not work with the same setup as everyone is differnt. Definately good to have though for a starting point!!! :thup:
 
I know my e8400 wasnt using a stock cooler to reach 4ghz. :)

Which one, i dont recall offhand.

Are you looking for a cooler for e8400? Need help overclocking it? Start up a thread so you can get more focused help. :)
 
EarthDog said:
I know my e8400 wasnt using a stock cooler to reach 4ghz. :)

Which one, i dont recall offhand.

Are you looking for a cooler for e8400? Need help overclocking it? Start up a thread so you can get more focused help. :)
Click to expand...

You know I have been pondering an inclusive LGA 775 guide/thread for a few weeks now. Been playing with an Abit IP35-E and Rampage Formula and crap ton of C2D's/Celly's. Too hot right now must wait till evening (my little windows unit is struggling in the 90+F and 70%+ dew point).

Take that with a grain of salt though you all know I'm a flake.:-/
 
jamez2128 said:
Lol! Did you remember some parts that you did 8 years ago?
Click to expand...

Let's see, 8 years ago? I was running an Intel Core 2 Duo E6600 on an Abit AW9D with 2X1GB Mushkin Xtreme Performance DDR2-800 RAM. I ran that Conroe at 3.0 gig 24/7 and was able to hit 3.6 long enough to get a screenshot.
 
I still miss Abit..I did have a couple of their AMD boards, and they were good, until they died :D I was never able to source an Intel one locally. I do have a Rampage Formula DDR2 board, and with a cpu like an e8600 it kix axe. But I have a x3360 for it, and it will do 475 fsb or so with it. I got to 600 with my e8600, but my ram wasn't willing to go past 600mhz, so who knows where it would top out. I do know it will run 550fsb 1:1 24/7 like it was a was nothing..

Edit:

Im surprised someone hasn't resurrected them yet!
 
freeagent said:
I still miss Abit..I did have a couple of their AMD boards, and they were good, until they died :D I was never able to source an Intel one locally. I do have a Rampage Formula DDR2 board, and with a cpu like an e8600 it kix axe. But I have a x3360 for it, and it will do 475 fsb or so with it. I got to 600 with my e8600, but my ram wasn't willing to go past 600mhz, so who knows where it would top out. I do know it will run 550fsb 1:1 24/7 like it was a was nothing..

Edit:

Im surprised someone hasn't resurrected them yet!
Click to expand...

On it! https://www.overclockers.com/forums/showthread.php/791062-Abit-IP35-E-revisited
 
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