*Official Retail G0 Q6600 Overclocking Thread*

[wyemarn]

If low VID = high temp, high VID = low temp then there is no difference getting a chip with low or high VID. Since power is equal to voltage*current, two chip operating in same frequency but different voltage should consume the same amount of power but different current. Thus, same amount of heat produce. Low VID chips need higher current and high VID chips need lower current. Am I correct?

[Loser777]

I don't think that's completely accurate. Keep in mind that not all chips are created equal, hence why they are binned according to TDP also, the current draw will vary between good/bad processors. Even though a line of processors for example has a rating of 125W TDP, it doesn't mean they will all use 125W at max load, some far less than 125, some close or at 125.

This is the reason Intel is charging more for a 65W line of Q9450s... these processors used to be in the standard line of Q9450s, but Intel decided to take advantage of the situation and segregate the ones with extremely low power consumption from the average ones.

Also, low VID chips are generally better because low VID chips have a trend of scaling better, as all chips have a point where the voltage scaling goes from linear to exponential-low VID chips stay in the range of acceptable voltage longer.

[HuffPCair]

I don't think that's completely accurate. Keep in mind that not all chips are created equal, hence why they are binned according to TDP also, the current draw will vary between good/bad processors. Even though a line of processors for example has a rating of 125W TDP, it doesn't mean they will all use 125W at max load, some far less than 125, some close or at 125.

This is the reason Intel is charging more for a 65W line of Q9450s... these processors used to be in the standard line of Q9450s, but Intel decided to take advantage of the situation and segregate the ones with extremely low power consumption from the average ones.

Also, low VID chips are generally better because low VID chips have a trend of scaling better, as all chips have a point where the voltage scaling goes from linear to exponential-low VID chips stay in the range of acceptable voltage longer.

I still want some proof of your thoughts. I just do not understand how a lower VID is going to have higher temps.

So again can we see some proof??????

[Loser777]

I assumed that the fact that lower VID chips have higher temperatures is pretty much common knowledge...
As for hard evidence? I mean inevitably there's going to be some variation caused by mounting pressure/spread of TMI, etc, but on a rough scale my 1.2125v VID chip got the same temps that my 1.3125v VID chip at 1.35v vs 1.45v. I actually remounted my chip many times, refusing to believe it, switching between Pushpins/retention bracket in the process also.

Granted, not everyone is going to experience this dramatic of a change, but it is essentially a given that a chip with a lower VID is going to have higher temperatures at the same voltage.

I guess I should clarify that I mean lower VID chips tend to run "hotter" at the same voltages, obviously a chip with 1.2125v VID isn't going to run at higher temperatures than a 1.3250v VID chip out of the box.

[Bail_w]

I still want some proof of your thoughts. I just do not understand how a lower VID is going to have higher temps.

So again can we see some proof??????

I use to have a 1.325v vid Q6600 that needs 1.58v for 3.85ghz where load temperature were about 65s. As of this moment, my 1.2v vid quad @ 3.91ghz with 1.49v, load temperature were 65-70s. I am not saying all chips with low vid result in high temperature, but i am pretty sure this is the case for q6600.

[LordKelvin]

I've recently bought a Q6600 G0 in ebay , it's a L727A749 (Aug-07) with 1.30V VID, to replace my E6600@3600. i'm not changing the mobo though, it's a Gigabute P965-DS3P rev 2.0. I've read that P35 is a better chipset for OC'ing this quads but I'm going to give it a try and I'd like to know if someone has achieved significant results with a P965 chipset and Kentdales. I've searched the forums but with little success.

So far I haven't done much testing but it's sitting at 3.2GHz with 1.280V in cpu-z (1.32V BIOS). Temperature is ~34ºC idle and ~43ºC load at (9x356) which is about 4 degrees hotter that at the stock 9x266. So far the temps haven't risen much but I'm aware that Vcore is the main contributor to heat dissipation and it's still quite low. When it gets to higher values I'll write my findings in this issue of Temps vs VID.

Another question: the E6600 wouldn't go further than 3600MHz no matter what so I put it in 8x450; do you think that it's gonna be harder for the mobo to achieve 450FSB with the quad compared to the dual core? Supossing the cpu itself reaches 9x400 without much pain.

[impar]

Greetings!

Well, you already have it at 3,2Ghz, so why not keep the 3,2Ghz but on a 8x400 combination?

[dan7777]

I've recently bought a Q6600 G0 in ebay , it's a L727A749 (Aug-07) with 1.30V VID, to replace my E6600@3600. i'm not changing the mobo though, it's a Gigabute P965-DS3P rev 2.0. I've read that P35 is a better chipset for OC'ing this quads but I'm going to give it a try and I'd like to know if someone has achieved significant results with a P965 chipset and Kentdales. I've searched the forums but with little success.

So far I haven't done much testing but it's sitting at 3.2GHz with 1.280V in cpu-z (1.32V BIOS). Temperature is ~34ºC idle and ~43ºC load at (9x356) which is about 4 degrees hotter that at the stock 9x266. So far the temps haven't risen much but I'm aware that Vcore is the main contributor to heat dissipation and it's still quite low. When it gets to higher values I'll write my findings in this issue of Temps vs VID.

Another question: the E6600 wouldn't go further than 3600MHz no matter what so I put it in 8x450; do you think that it's gonna be harder for the mobo to achieve 450FSB with the quad compared to the dual core? Supossing the cpu itself reaches 9x400 without much pain.

why don"t you try 9x400 giving you 3.6ghz should be easy enough good luck.

[xdrift0rx]

3.6 should be easy for Q6600's now, with a decent motherboard at least.

Mine is runinng at 3.6 24/7 stable with 1.280v read in CPU-Z with 1.33750v set in bios(lol i know it sounds funny)

To be honest, stay open minded with you gear and realize whats limiting you in places, and keep trying new settings. my quaddie can apparently do 4.23ghz @ 1.55v, but my board wont go any higher with the FSB...

[joebloggs]

Batch : L807A413

Result: won't stay stable at anything over 1400 (ish) fsb.

Motherboard: Striker II Extreme
RAM: Corsair XMS3 1333C9DHX

It needs around 1.4v in BIOS to stay stable at 3ghz. (1.45v actual).

Not sure if it's the board, or the cpu, but it won't stay stable at 1600 fsb even with a 6x multi. VID is 1.3.

Higher fsb also results in some POST freezes and my motherboard can't find my boot HDD.

Don't know if it's mobo or cpu that's holding it back. Any way to find out if it's mobo or cpu?

[fatguy1992]

You mobo should be able to handle a 400 FSB. Have you tried increasing the NB and SB voltage?

[ownage]

Batch : L807A413

Result: won't stay stable at anything over 1400 (ish) fsb.

Motherboard: Striker II Extreme
RAM: Corsair XMS3 1333C9DHX

It needs around 1.4v in BIOS to stay stable at 3ghz. (1.45v actual).

Not sure if it's the board, or the cpu, but it won't stay stable at 1600 fsb even with a 6x multi. VID is 1.3.

Higher fsb also results in some POST freezes and my motherboard can't find my boot HDD.

Don't know if it's mobo or cpu that's holding it back. Any way to find out if it's mobo or cpu?

VID 1.3 sounds bad!

[joebloggs]

Raised NB as far as 1.45, and SB to 1.55. I do have 2 9800 GTX+ in SLI, don't know if it makes a difference.

It passed 50 passes of Intel Burn, but ALWAYS bsod and restarted about 30-50 minutes later. Switch back on, bsod and restart in another 30-50 minutes.

[GrossmeisterB]

Hi everyone!!

What GTLs do you use for your Q6600 for ~430MHz FSB?? Do you have them both the same (e.g. 0/2 = 0.67 and 1/3 = 0.67), or do you have them different, like e.g. 0/2 = 0.63 and 1/3 = 0.67???
I'm using an Asus P5Q-E, I'm unsure where to start with these values...thanks!

[Demo]

at 3.4Ghz ( 425x8 ) 1.415vCore in bios, 1.27xx PPL (max) , 1.29vMCH , 2.00vDIMM

My computer either reboots or BSOD's after about 4hrs of Prime Small FTT, temps are with in acceptable levels.

Does this mean i need more vcore?

[iMpathetic]

Hey everyone.

Didn't want to post a new thread.... so I was wondering what I should do to get my computer stable and clocking higher? I am an absolute first time overclocker. Like, FIRST EVAR.

All of the relevant settings that I know of:

Q6600 G0. 1.23V stock, but HW Monitor said 1.1. I don't know what the deal is with that.

Current settings:

9x315MHz, 1.275V.

RAM: Wintec 2x1GB DDR3 1333MHz. Set at 1.8V. 7-7-7-15 timing.

I am on a Gigabyte X48T-DQ6 board, running Vista Ultimate. I am using a Thermaltake Big Typhoon.

I can't seem to get 3GHz stable even when just browsing the web... it BSODs a ton. I'm back down to 2.88 or whatever that comes out to.

Any advice? If I left anything out, please let me know! Thanks so much!

[Demo]

1.275v is my starting voltage.. so you may wish to try 1.315v or higher for 3.0 or 3.6

[iMpathetic]

Thanks, I'll try that.

Should I mess with the memory voltage any?

[Demo]

Thanks, I'll try that.

Should I mess with the memory voltage any?

At 400FSB 1:1 you should only be running it at manufacturer specification or a notch higher.

[The0men]

Hi everyone!!

What GTLs do you use for your Q6600 for ~430MHz FSB?? Do you have them both the same (e.g. 0/2 = 0.67 and 1/3 = 0.67), or do you have them different, like e.g. 0/2 = 0.63 and 1/3 = 0.67???
I'm using an Asus P5Q-E, I'm unsure where to start with these values...thanks!

I Have that mobo and am currently doing 3.6ghz with GTL's at .65 and .67 respectively.

I would love to go higher but I'm limited by temps even though the chips at 1.4v, still gives me up to 70C.

[iMpathetic]

At 400FSB 1:1 you should only be running it at manufacturer specification or a notch higher.

That's weird, it seems like the memory voltage is the culprit when the computer fails to POST....

Well, I guess I've been doing something wrong then.

Thanks for your help!

[GrossmeisterB]

I Have that mobo and am currently doing 3.6ghz with GTL's at .65 and .67 respectively.

I would love to go higher but I'm limited by temps even though the chips at 1.4v, still gives me up to 70C.

I see, so you're using two different values...gotta try that later...but I'm having my chip stable at 8x469MHz, giving me 3750MHz, at 1.48V, chip gets to about 65°C under P95-small-FFT run, cooled by D-Tek FuZion v1...

[dan7777]

I see, so you're using two different values...gotta try that later...but I'm having my chip stable at 8x469MHz, giving me 3750MHz, at 1.48V, chip gets to about 65°C under P95-small-FFT run, cooled by D-Tek FuZion v1...

thats seems abit high for water my Vcore is 1.5 and my temps never go any higher than 68c

[GrossmeisterB]

At what speed, dan777? Maybe my IHS isn't that flat?? But 1.48 and 1.50V aren't that far off...

[Neilsouth]

Had this board for over a year now but i've never been able to get it above 3ghz! , Here are my settings currently

ASRock Penryn1600SLI-110dB
Q6600 Core 2 Quad Kentsfield B Stepping , Rev G0
8GB 800DDR2





CPU FREQ - 333
PCIE FREQ - 101
DRAM - AUTO
MEM TIMINGS - AUTO
HYPER TRANSPORT MHZ [ 1000MHZ ]

CPU VOLTAGE - 1.41875V
DRAM VOLTAGE - 2.08 V
CHIPSET VOLTAGE - 1.382V
VTT - 1.42V
GTLREF VOLT - [ HIGH ]

HALT STATE - DISABLED
MAX CPUID VALUE LIMIT - DISABLED
CPU THERMAL THROTTLE - DISABLED
SPEED STEP - DISABLED