*Official Retail G0 Q6600 Overclocking Thread*

[CikaNovo]

im so jealous you guys seem to be doing so good with your boards i hate mine i was doing a build then when i started it up i got infamous "--" post this will be my 3rd or 4th time rma'ing my evga 680i i think i should buy a new board now but am unsure what to buy

You can find a lot of people that were not really satisfied with their EVGA 680i board that went out and bought ASUS Striker Extreme.It's in this thread:

http://www.xtremesystems.org/forums/...d.php?t=159457

I personally am very satisfied with mine EVGA 680i.It has been troublefree from day one and I own it for almost 4 months.

[Hans Gruber]

The Q6600 is quite a mysterious beast. My GO stepping processor runs at 3.2Ghz at stock speed. I upped the voltage to 1.25v. My processor will run everything at 3.6Ghz @1.4v then mysteriously crash after a day or two. I've settled at 3.2Ghz because I think cranking up the voltage is a waste of energy for diminished returns on performance.

My C2D 6400 also runs completely stable at 3.2Ghz up from its stock 2.13Ghz. The C2D needs about 1.375v to be completely stable.

It seems to me that the best overclocks are running on P35 motherboards right now. Unless you've got superior water cooling or liquid nitrogen, everybody seems to be topping out about the same. It sounds like many people are having mysterious crashes while the Q6600 is idle. Yet, the Q6600 runs Prime95 completely stable.

This is a strange CPU, but I like it a lot.

[Jumba]

My GO stepping processor runs at 3.2Ghz at stock speed.

Sorry, had to lol.

But seriously, Hans, I figure the secret is in the GTL voltages. After a bit of tweaking, they can open the door to much higher overclocks.

[Praz]

3.2GHz for me requires a 37mV bump in vcore.

[Hans Gruber]

I forgot to mention that I boosted both the FSB voltage and the Nortbridge voltage. I run the Q6600 at 1.25v but CPU-Z shows my MSI board runs the processor at about .25v above whatever I set the vcore at.

[flesheatinvirus]

I can hardly wait, the build starts this weekend.

[Andrew LB]

Well.... last week I put together my first quad Q6600 G0 setup and am quite disappointed with the results thus far. I cannot get the chip above 2.92ghz on my Asus P5N32-E SLI motherboard. When i'd put the FSB to 1333.3 and ram to 800 it would boot almost to the desktop but would crash at the password sign in screen. With my previous E6600 chip, I was able to hit 3.6ghzwith a 1600mhz FSB and 800mhz ram.

(the room is pretty warm right now)



Here are my settings. Perhaps I forgot a setting to get my chip higher.

AI Tuning: Manual
Nvidia GPU Ex: Disabled
LinkBoost: Disabled

FSB - Memory Clock Mode: Unlinked
x FSB - Memory Raio: N/A
FSB (QDR), Mhz: 1600
Actual FSB (QDR), Mhz: 1600
MEM (DDR), Mhz: 800

Vcore Voltage: 1.45v (set in bios.... reads 1.4v in bios)
Memory Voltage: 2.100v
1.2v HT Voltage: 1.3v
NB Core Voltage: 1.4v
SB Core Voltage: 1.55v
CPU VTT Voltage: 1.4v
DDRII Controller Ref Voltage: AUTO
DDRII Channel A Ref Voltage: AUTO
DDRII Channel B Ref Voltage: AUTO

tCL (CAS Latency): 5
tRCD: 5
tRP: 5
tRAS: 15
Command Per Clock (CMD): 2 clock (2T)

Advance Memory Settings
tRRD: AUTO
tRC: AUTO
tWR: AUTO
tWTR: AUTO
tREF: AUTO
Async Latency: AUTO

CPU Spread Spectrum: Disabled
PCIE Spread Spectrum: Disabled
MCP PCIE Spread Spectrum: Disabled
SATA Spread Spectrum: Disabled
LDT Spread Spectrum: Disabled

CPU Internal Thermal Control: Disabled
Limit CPUID MaxVal: Disabled
Enhanced C1 (C1E): Disabled
Execute Disable Bit: Disabled
Virtualization Technology: Disabled
Enhanced Intel Speedstep Tech: Disabled
LDT Frequency: 5x

PCIEX16_1 Frequency (Mhz): 100
PCIEX16_2 Frequency (Mhz): 100
PCIEX16_3 Frequency (Mhz): 100
SPP<->MCP Ref Clock, Mhz: 200

[Andrew LB]

Oh yeah... here is the information off the processor box.

Prod Code: BX80562Q6600SLACR
FPO/Batch: L727A925
Version: E10342-001
Pack Date: 08/14/2007

[holwill]

New board better clocks,8hrs P95 v25.3 small fft's stable.



Q6600@3.6 400x9 1.425vcore
Revision GO
Batch L724A828
Asus P5K-Premium 0204 Bios
Temps 60/60/54/54
Cooling Custom Water Storm G4 rev2, Pa120.2+Pa120.1,D5

With my P5W-DH could not get past 340fsb, on the premium it will go higher but waiting for my Fusion to arrive and swap out the Storm and will try 3.8 again was stable at 1.45v but getting toasty after 4hrs+.

[Leeghoofd]

AI Tuning: Manual
Nvidia GPU Ex: Disabled
LinkBoost: Disabled

FSB - Memory Clock Mode: Unlinked
x FSB - Memory Ratio: N/A
FSB (QDR), Mhz: 1333
Actual FSB (QDR), Mhz: 1333
MEM (DDR), Mhz: 800

Vcore Voltage: 1.45v (set in bios.... reads 1.4v in bios)
Memory Voltage: 2.100v
1.2v HT Voltage: 1.4v
NB Core Voltage: 1.4v
SB Core Voltage: 1.55v
CPU VTT Voltage: 1.45v
DDRII Controller Ref Voltage: AUTO
DDRII Channel A Ref Voltage: AUTO
DDRII Channel B Ref Voltage: AUTO

tCL (CAS Latency): 5
tRCD: 5
tRP: 5
tRAS: 15
Command Per Clock (CMD): 2 clock (2T)


Try 425FSB if it works with an 8 X or even 450FSB, the boards have many many holes.....

AI Tuning: Manual
Nvidia GPU Ex: Disabled
LinkBoost: Disabled

FSB - Memory Clock Mode: Unlinked
x FSB - Memory Ratio: N/A
FSB (QDR), Mhz: 1700
Actual FSB (QDR), Mhz: 1700
MEM (DDR), Mhz: 800

Vcore Voltage: 1.45v (set in bios.... reads 1.4v in bios)
Memory Voltage: 2.100v
1.2v HT Voltage: 1.65v
NB Core Voltage: 1.45v
SB Core Voltage: 1.55v
CPU VTT Voltage: 1.5v
DDRII Controller Ref Voltage: AUTO
DDRII Channel A Ref Voltage: AUTO
DDRII Channel B Ref Voltage: AUTO

tCL (CAS Latency): 5
tRCD: 5
tRP: 5
tRAS: 15
Command Per Clock (CMD): 2 clock (2T)

[Andrew LB]

^^^ I just tried it. For some reason i cannot get this quad to run an FSB higher than 325mhz on this motherboard while my previous E6600 dual core ran 400mhz FSB. Odd....

[Mic]

Q6600 G0 4.35 Ghz stable enough to run 3dmark2006, haven't tried with any of the other programs.
1.7V + Mach II GT cooling

[Leeghoofd]

which mobo Mic ?

[Mic]

asus blitz formular SE, 1 GB kingston PC9600 Memory.

[Avman]

Q6600 G0 4.35 Ghz stable enough to run 3dmark2006, haven't tried with any of the other programs.
1.7V + Mach II GT cooling

See my sig. I'm gaming and everyday use stable at this speed and I know I can get to 4.4ghz at 1.7v (tried a suicide run) but I don't want to push the Vapo too much. Stock Vapo's and Mach 2's aren't known for holding up well on high voltage Quads.

[r4t]

hey guys,
when u OC the Q6600 does it still go below clock on idle as it does @ default ?

[Avman]

Not if you turn off EIST/Speedstep or any other clock throttling or voltage throttling things in the Bios.

[swaaye]

yeah if you want to stop that, turn off EIST and C1E.

From what I gather, C1E allows the CPU to jump to 6x multi and a lower voltage when it receives HLT from the OS. EIST allows the OS itself to control some additional in-between multipliers (7x, 8x, 9x, etc) with intermediate voltages for finer-grained speed and power control.

On Gigabyte boards (and maybe others), if you set a CPU voltage yourself in the BIOS, the voltage will stay where you set it even as the clock changes. So you lose a lot of power and heat savings when idle. At least this is what Gigabyte boards do. If the voltage is still changing even when you set a manual voltage, you might get instability because the CPU will be running faster than specified for the lower multipliers yet still receive the super low voltage.

I just leave C1E on always.

Thermal Monitor 2 (TM2), btw, just affects what happens if your CPU reaches the temperature at which protection circuitry kicks in to cool down the CPU.

[JacKz5o]

More vCore.

[timber715]

I just need confirmation on the safe temperature limit for Q6600 G0 step to be at 75C ??? is that right?

[Frega]

room 15&#176;C, core 22&#176;C, idle... watercooler

specs -> Q6600 (L721A) under P5K Deluxe, and 512mb ddr2 667 5-5-5-15 @ 860 5-5-5-15, im waiting for 2gb crucial ballistix tracer 800 =P


i have questions, the Asus Proble II read correct temp.? 22&#176;C core, room 15&#176;C, with watercooler

what is cpu pll voltage? and clock over charge? and NB Voltage reference?

my Q6600 boot in 430*9 = 1.45v (full stable) 450*9 = 1.55v (don't post/boot) =(

[M3kk]

Why you dont use coretemp? ( 0.95.4 )

[RLM]

what is cpu pll voltage? and clock over charge? and NB Voltage reference?

Just got this board. haven't had much time for oc'ing.

pll comes into play when trying to reach higher fsbs. Clock over charge, I'm wondering about this one myself.

regards NB voltage. Seems this is key with the Q6600. My initial memory overclocks failed blend after a matter of minutes. Finding this setting and changing it to x0.67 has made the difference.

Just a preliminary run, in between work. Nice that I only need 1.25 on the NB and 1.2 on the FSB.

Q6600 3.6ghz 400x9 Mem Gskill 6400 GBHZs 5:6 960mhz 4-4-4-12 Prime Blend

JumperFree Configuration Settings
AI Overclocking: Manual
CPU Ratio Control: Manual
- Ratio CMOS Setting: 9
FSB Strap to Northbridge: 333
FSB Frequency: 400
PCI-E Frequency: 100
DRAM Frequency: DDR2 960
DRAM Command Rate: 2T
DRAM Timing Control: Manual
CAS# Latency: 4
RAS# to CAS# Delay: 4
RAS# Precharge: 4
RAS# Activate to Precharge: 12
TWR: AUTO
TRFC: 42
TWTR: AUTO
TRRD: AUTO
TRTP: 8
DRAM Static Read Control: Enabled

Transaction Booster: Disabled
Relax [0]
Clock Over-Charging Mode: AUTO (What is this?)

CPU Spread Spectrum: Disabled
PCIE Spread Spectrum: Disabled

CPU Voltage: 1.4v (1.38 in OS vdroop to 1.36v)
CPU Voltage Reference: x0.63
CPU Voltage Damper: Enabled
CPU PLL Voltage: 1.50
DRAM Voltage: 2.20
FSB Termination Voltage: 1.20
North Bridge Voltage: 1.25
North Bridge Voltage Reference: x0.67
South Bridge Voltage: 1.05

Advance CPU Settings
CPU Ratio Control: Manual
- Ratio CMOS Setting: 9
C1E Suppport: Disabled
Max CPUID Value Limit: Disabled
Vanderpool Technology: Disabled
CPU TM Function: Disabled
Execute Disable Bit: Enabled
PECI: Disabled

USB Configuration
USB Functions: Enabled
Legacy USB Support: Disabled

RLM

[noroger]

Q6600 @4GHz, Asus P5B "vanilla" (oh yeah ) vdrop modded, Corsair XMS2 800MHz CL5 @895 CL5, ULTRA 500W PSU, water.



Suicide Screen



Edit: Imageshawk is not working :/ ill reupload the pics

[Hans Gruber]

The secret seems to be having a P35 board and then cranking up the FSB voltage and the NB voltage. My MSI board has heatpipes to the north and south bridge so I cranked up the northbridge to 1.4v and the southbridge to 1.3v. I'm settling for 3.3Ghz at 1.225. CPU-Z and SpeedFan indicate 1.25v for the Vcore so my MSI board overvolts the Vcore, which seems unusual since most motherboards undervolt what the bios settings are. Curiously, my ram is running at 2.3v but SpeedFan says my ram is running at 2.1v

Many of you have very impressive overclocks but your power bill will be even more impressive when you run at 4Ghz with 1.5v+