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Q6600 B3: CPU, FSB voltage calculator?

post #1 of 31
Thread Starter 
For the past 6+ months, I have ran my Q6600 B3 on a 750i SLI board at 1.5v with a FSB voltage at 1.20 for a 3.2GHz OC. I have just gotten into more reading to see there are people who have had the same OC with a lot less voltage. (1.425v and lower) I was wondering if anyone had any advice on a possible voltage ratio I should be using.

Right now, I have everything air cooled and my temps have usually be in the 40c range on idle, mid 50c range for gaming and I have gotten as high as in the low 70c range for running tests like OCCT.

I'm just asking because I have tried running CPU voltages at 1.40 - 1.425 and I have gotten alot of pausing and freezes. Right now, I am on 1.475v and really wanted to know if their is a "rule of thumb" out there for us beginner OCers.
post #2 of 31
Quote:
Originally Posted by caribpapi View Post
For the past 6+ months, I have ran my Q6600 B3 on a 750i SLI board at 1.5v with a FSB voltage at 1.20 for a 3.2GHz OC. I have just gotten into more reading to see there are people who have had the same OC with a lot less voltage. (1.425v and lower) I was wondering if anyone had any advice on a possible voltage ratio I should be using.

Right now, I have everything air cooled and my temps have usually be in the 40c range on idle, mid 50c range for gaming and I have gotten as high as in the low 70c range for running tests like OCCT.

I'm just asking because I have tried running CPU voltages at 1.40 - 1.425 and I have gotten alot of pausing and freezes. Right now, I am on 1.475v and really wanted to know if their is a "rule of thumb" out there for us beginner OCers.
Every piece of hardware is different. If you're not stable at a lower voltage, there is nothing you can do about it. Besides the Q6600 is 65nm so in my opinion 1.5v is nothing for a 24/7 voltage.
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post #3 of 31
Damn that's alot of voltage for 3.2. I run 1.392 vcore @3.6 and 1.2fsb volts
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post #4 of 31
Quote:
Originally Posted by Turbo4Banger View Post
Damn that's alot of voltage for 3.2. I run 1.392 vcore @3.6 and 1.2fsb volts
And you most likely have a G0 Q6600 which is a completely different animal than a B3 Q6600.
post #5 of 31
Yep G0 and that sux
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post #6 of 31
I have a B3, in CPU-Z it says my vid is 1.328 (cant remember what it says in bios)
i only have it at 3.3GHz (sig rig) and it is IBT stable 20 runs, average of 40gflops with max temp of 74.C but only low 50s.C running BFBC2.

i am happy enough with that, and i haven't even tried to go higher. i am probably wrong but at 3.5GHz i will only gain about 2-3fps but with a lot more temps.

i didnt use a ratio or anything like that.
i just kept raising FSB until it wouldn't boot.
then in bios, i raised the volts a notch
then raised the FSB again until wouldn't boot, and again i raised the volts a notch or 2 again. until i was happy with 3.3.

also i couldn't get it stable using a x9 multi, i tried the x8 and it was happy.
but my mobo has enough voltage options to light a bar

also what tjmax are you using in coretemp or realtemp?
there is a lot of debate on this, but it "seems" to be a G0 is 100, B3 is 90, so in realtemp, set the tjmax to 90, in coretemp, it says its 85 on mine, so i have to add 5 in the values
Edited by j.col - 3/7/11 at 2:57pm
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post #7 of 31
Thread Starter 
Quote:
Originally Posted by j.col View Post
also what tjmax are you using in coretemp or realtemp?
there is a lot of debate on this, but it "seems" to be a G0 is 100, B3 is 90, so in realtemp, set the tjmax to 90, in coretemp, it says its 85 on mine, so i have to add 5 in the values
I have my Tj. Max set at 85c right now and my VID is at 1.3250v.

I really am asking about voltages because right now, I have had a problem ever since I got another 2 gig stick of DDR2 memory in my system. I hardly had any freezes or pausing before, so I am just trying to figure out if should be raising my voltages just to be a bit more stable. (I'm just afraid to go up to the settings that are marked in red) This is what I have in my system right now:

Quote:
# EVGA 750i MB
# EVGA GTX 460 Super Clocked
# OCZ 600MXSP Power Supply
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# 1 PCI SATA/e-SATA Card
# Cooler Master Hyper 212 Plus CPU Heatsink/Cooler
# 3x Cooler Master 120mm Fans
It was running fine with the 2gb and 2x1gb dimms, but it doesn't seem to stick with another 2gb stick. I was also thinking it could have been something with having my iPhone attached to the comp at all times.
post #8 of 31
You should run memtest86+ to make sure the memory is good.

Besides that you may want to increase the chipset voltage. The memory controller is on the p45 chipset, so when you stress it more by adding more sticks you may need to increase voltage to that area in particular.
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post #9 of 31
Quote:
Originally Posted by Dopamin3 View Post
You should run memtest86+ to make sure the memory is good.

Besides that you may want to increase the chipset voltage. The memory controller is on the p45 chipset, so when you stress it more by adding more sticks you may need to increase voltage to that area in particular.
this^^^^
overclocking 4 sticks of ram is harder than 2
you will need to add more NB (Northbridge) voltage, to cope with the extra 2 sticks, you dont need to add any cpu voltage

in future try to just use 2 sticks of ram. i have 2 x 2gb ram and it saves alot of headaches
Edited by j.col - 3/8/11 at 3:57am
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Old Slow Hand
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post #10 of 31
Quote:
Originally Posted by j.col View Post
I have a B3, in CPU-Z it says my vid is 1.328 (cant remember what it says in bios)
i only have it at 3.3GHz (sig rig) and it is IBT stable 20 runs, average of 40gflops with max temp of 74.C but only low 50s.C running BFBC2.

i am happy enough with that, and i haven't even tried to go higher. i am probably wrong but at 3.5GHz i will only gain about 2-3fps but with a lot more temps.

i didnt use a ratio or anything like that.
i just kept raising FSB until it wouldn't boot.
then in bios, i raised the volts a notch
then raised the FSB again until wouldn't boot, and again i raised the volts a notch or 2 again. until i was happy with 3.3.

also i couldn't get it stable using a x9 multi, i tried the x8 and it was happy.
but my mobo has enough voltage options to light a bar

also what tjmax are you using in coretemp or realtemp?
there is a lot of debate on this, but it "seems" to be a G0 is 100, B3 is 90, so in realtemp, set the tjmax to 90, in coretemp, it says its 85 on mine, so i have to add 5 in the values
That's good for a B3. Most I've seen top out in the 3.1-3.2GHz range and are hot.

VID does not mean vcore or Core Voltage...2 different things. VID is a value assigned to each individual CPU by Intel at the factory during testing that tells the mobo what voltage to apply at stock.

As for Tjmax it really doesn't matter what it is. The important thing is to keep your distance from it. >20 for sure, but >30 is preferred.


Quote:
Originally Posted by caribpapi View Post
I have my Tj. Max set at 85c right now and my VID is at 1.3250v.

I really am asking about voltages because right now, I have had a problem ever since I got another 2 gig stick of DDR2 memory in my system. I hardly had any freezes or pausing before, so I am just trying to figure out if should be raising my voltages just to be a bit more stable. (I'm just afraid to go up to the settings that are marked in red) This is what I have in my system right now:


It was running fine with the 2gb and 2x1gb dimms, but it doesn't seem to stick with another 2gb stick. I was also thinking it could have been something with having my iPhone attached to the comp at all times.
Did you add a single stick of RAM? So, you know have 3 dimms populated? To maintain dual-channel operation you want to use 2 or 4 matching sticks of RAM. Preferably 2 as more can put more stress on the NB making it more difficult to OC.


Quote:
Originally Posted by Dopamin3 View Post
You should run memtest86+ to make sure the memory is good.

Besides that you may want to increase the chipset voltage. The memory controller is on the p45 chipset, so when you stress it more by adding more sticks you may need to increase voltage to that area in particular.
That ain't no P45.
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