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3.20 on q6600 on xfx 680i LT sli - Page 7

post #61 of 313
XFX 680i LT (680i P32 BIOS) // Q6600

Well, this is the most stable and fastest speed I've reached thus far. I'm at:

3240MHz
(1440 FSB x 9 multi)

FSB 1.400v
NB 1.45v
SB 1.55v
HT 1.20v

but... Vcore 1.49v!

Dropping the Vcore even one notch will kill my stability -- won't run windows for more than 5-10 minutes. But where it's at it is rock solid. Ran Prime95 for 12 hours straight, 50 deg C high temp.

I'm not sure where I'm going wrong. Why can't I get a stable system at a lower vcore for the speed I'm at? I played with the NB & SB voltage to see if I could augment the voltages enough to allow me to drop the Vcore, but it doesn't help. You say the Q6600 has a stock voltage of 1.28, I can't even get through the POST without it freezing at less than 1.31v. Are there other settings I'm missing somewhere that need to be enabled/disabled?
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post #62 of 313
Quote:
Originally Posted by rob487 View Post
XFX 680i LT (680i P32 BIOS) // Q6600

Well, this is the most stable and fastest speed I've reached thus far. I'm at:

3240MHz
(1440 FSB x 9 multi)

FSB 1.400v
NB 1.45v
SB 1.55v
HT 1.20v

but... Vcore 1.49v!

Dropping the Vcore even one notch will kill my stability -- won't run windows for more than 5-10 minutes. But where it's at it is rock solid. Ran Prime95 for 12 hours straight, 50 deg C high temp.

I'm not sure where I'm going wrong. Why can't I get a stable system at a lower vcore for the speed I'm at? I played with the NB & SB voltage to see if I could augment the voltages enough to allow me to drop the Vcore, but it doesn't help. You say the Q6600 has a stock voltage of 1.28, I can't even get through the POST without it freezing at less than 1.31v. Are there other settings I'm missing somewhere that need to be enabled/disabled?
yeah... this is gonna sound weird, but try putting your CPU clock higher.

as my previous post mentioned, this motherboard has large FSB walls, or holes. from my testing, it ranges from about 375mhz to 420mhz or so. i found it nearly impossible to obtain a stable 3.2ghz, yet i was able to stabalise 3.6ghz 24/7, and bench @ 3.9ghz. i also got in @ 4ghz but couldnt complete a whole 3dmark. obviously you will need water cooling to get those clocks, but 3.6ghz shouldnt be a problem with good aftermarket air cooling.

what i mean by a FSB hole or wall is, if you set the FSB to a value between, say, 375 or 420 (will appear as 1500 to 1680 on your motherboard BIOS due to Quad Data Rate, or QDR, where the FSB is x4) you may not be able to get any stability, no matter what voltage. its a fault of this board unfortunately.

im tellin ya, 1.49v is way too high for 3.2ghz. i easily got 3.6ghz @ 1.43v. that was with an 8x multi and a FSB of 450 (or 1800 with QDR).
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post #63 of 313
Hey all! Saw this thread and I have the same board and processor. I have mine running at stock vcore at 3.2Ghz on the P07 BIOS. Only reason I haven't tried to go higher is because I won't let my temp go above 60C. Maybe if I decide to pick up some more aggressive cooling I'll try.
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post #64 of 313
Quote:
Originally Posted by gtarmanrob View Post
yeah... this is gonna sound weird, but try putting your CPU clock higher.

as my previous post mentioned, this motherboard has large FSB walls, or holes. from my testing, it ranges from about 375mhz to 420mhz or so. i found it nearly impossible to obtain a stable 3.2ghz, yet i was able to stabalise 3.6ghz 24/7, and bench @ 3.9ghz. i also got in @ 4ghz but couldnt complete a whole 3dmark. obviously you will need water cooling to get those clocks, but 3.6ghz shouldnt be a problem with good aftermarket air cooling.

what i mean by a FSB hole or wall is, if you set the FSB to a value between, say, 375 or 420 (will appear as 1500 to 1680 on your motherboard BIOS due to Quad Data Rate, or QDR, where the FSB is x4) you may not be able to get any stability, no matter what voltage. its a fault of this board unfortunately.

im tellin ya, 1.49v is way too high for 3.2ghz. i easily got 3.6ghz @ 1.43v. that was with an 8x multi and a FSB of 450 (or 1800 with QDR).

Ok I'm beginning to see what you mean. I bumped the FSB up 5 and I got a little bit better specs and was able to stabilize with lower VCore, but still the Vcore is quite high according to what you say.

1445 FSB, x9 multi, 3251MHz
VCore 1.45 actual
FSB 1.4
NB 1.45
SB 1.55
HT 1.20

I started with 1.35 Vcore, 1.35 NB, 1.50 SB and started the system. If it was unstable, I'd bump the NB and SB each up one notch and try it until I got to 1.50 and 1.625 respectively. If it was still unstable, I'd bump the Vcore up one and start over with the NB and SB at the lower voltages too. I couldn't even get past the POST until I was up to 1.39 Vcore. -- but I'm working on getting that VCore down.
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post #65 of 313
Quote:
Originally Posted by rob487 View Post
Ok I'm beginning to see what you mean. I bumped the FSB up 5 and I got a little bit better specs and was able to stabilize with lower VCore, but still the Vcore is quite high according to what you say.

1445 FSB, x9 multi, 3251MHz
VCore 1.45 actual
FSB 1.4
NB 1.45
SB 1.55
HT 1.20

I started with 1.35 Vcore, 1.35 NB, 1.50 SB and started the system. If it was unstable, I'd bump the NB and SB each up one notch and try it until I got to 1.50 and 1.625 respectively. If it was still unstable, I'd bump the Vcore up one and start over with the NB and SB at the lower voltages too. I couldn't even get past the POST until I was up to 1.39 Vcore. -- but I'm working on getting that VCore down.
thats good work man.

you'll get the hang of it. takes a lot of trial and error to overclock, but you seem to be doing it right. just stay within certain parameters, like dont go over 1.5v on the NB, or 1.6v on the SB ( u can go over but shouldnt really need to, dont ever go higher than 1.7v) and keep that Vcore under 1.5v, preferably max 1.48v depending on what clocks you're trying to achieve. otherwise you'll greatly shorten the lifespan of that CPU.

and just keep trying different FSB / multiplier combos and clocks. takes time but once you hit the sweet spot you'll be laughing,
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post #66 of 313
I am new here so don't hurt me to bad!

I am running this setup with 2 x 8800GTX in SLI mode at the moment. Can't seem to get anything stable past 3.3ghz :swearing:

I have included my 3D Mark06 score when it was just at 3ghz, I haven't run it yet at 3.3.
And the most current readings...

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post #67 of 313
Quote:
Originally Posted by Cheesew1z View Post
I am new here so don't hurt me to bad!

I am running this setup with 2 x 8800GTX in SLI mode at the moment. Can't seem to get anything stable past 3.3ghz :swearing:

I have included my 3D Mark06 score when it was just at 3ghz, I haven't run it yet at 3.3.
And the most current readings...
hey dude, welcome to the forums.

to make it a bit easier for us, please go to UserCP at the top of the page and fill in your system specs.

the link to that picture didnt work, for me anyway. so cant see what system you are running exactly.
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post #68 of 313
Quote:
Originally Posted by gtarmanrob View Post
hey dude, welcome to the forums.

to make it a bit easier for us, please go to UserCP at the top of the page and fill in your system specs.

the link to that picture didnt work, for me anyway. so cant see what system you are running exactly.
Most of it's up for your pleasure, the rest I will have to get at a more convenient time
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post #69 of 313
Quote:
Originally Posted by Cheesew1z View Post
Most of it's up for your pleasure, the rest I will have to get at a more convenient time
haha good stuff. we used to have the exact same setup.

i think it differs across each board, but i was able to get real high clocks.

so the next thing, have you done much overclocking before? do you know about voltages and things like that? if not, its best not to get too into it straight away, as playing with voltages is playing with fire if you're not careful, you'll get burned.
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post #70 of 313
Quote:
Originally Posted by gtarmanrob View Post
haha good stuff. we used to have the exact same setup.

i think it differs across each board, but i was able to get real high clocks.

so the next thing, have you done much overclocking before? do you know about voltages and things like that? if not, its best not to get too into it straight away, as playing with voltages is playing with fire if you're not careful, you'll get burned.
I've dabbled, this is my first Intel in a lonnnnnng time I didn't really do to much over the years with my AMD's, I tried but this thing amazes me at how easy it is to get it to go so high with minimal changes


Also, where is this P31/32 BIOS? Is P07 older?
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