overclocking E8500 4GHZ + (GTL's questions)

angela

angela

angela

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Hi,
was running my E8500 C0 at 4ghz, for couple months, just today noticed in BIOS (asus p5q-e motherboard) following:

CPU GTL VOLTAGE REFERENCE (1/3)
min. 0410x
max. 0.800x
STANDARD: 0.670x

CPU GTL VOLTAGE REFERENCE (o/2)
min. 0.370x
max. 0.760x
STANDARD 0.630x

NB GTL REFERENCE
min. 0.370x
max. 0.760x
STANDARD 0.630x

at 4ghz, I was setting ALL GTL's to 0.66x
but as you see, (1/3) GTL's standard setting is 0.670x

so definitely it did not run on right setting!?!?!?!

I should increase above standard as O/Ck'ng?
can someone tell what numbers should I set to all GTL's?
 
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twist3d0n3 said:
GTL's are for quad cores, they will have little to no effect on a dual...
Click to expand...

That's not true at all! Yes GTLs are crucial to high fsb clocking on quads, but they are VERY important on dualies as well.

To the OP, try 1.20 FSB-Termination and .655GTL for both 0/2 and 1/3
This worked best for me on all my wolfdales when I had my old P5Q-Deluxe
 
@gurusan

What temps are you getting with your E8400 @ 4.5GHz. Is your CPU water cooled??

Also what sort of Vcore and NB voltage are you pumping through that??

I am tempted to increase my E8500 above 4GHz but i dont know if its worth the hastle.
 
gurusan said:
That's not true at all! Yes GTLs are crucial to high fsb clocking on quads, but they are VERY important on dualies as well.

To the OP, try 1.20 FSB-Termination
Click to expand...

thanks for letting know about gtl's.

didn't get about 1.20 fsb termination:rolleyes:
 
corkyo4 said:
@gurusan

Also what sort of Vcore and NB voltage are you pumping through that??

I am tempted to increase my E8500 above 4GHz but i dont know if its worth the hastle.
Click to expand...

I bet he is under watercooling, As you have E8500, his Vcore and NB v. won't be same as E8500!

I hit mine E8500 4.2ghz C0 stepping, but could not see difference, left at 4 ghz
 
gurusan said:
That's not true at all! Yes GTLs are crucial to high fsb clocking on quads, but they are VERY important on dualies as well.

To the OP, try 1.20 FSB-Termination and .655GTL for both 0/2 and 1/3
This worked best for me on all my wolfdales when I had my old P5Q-Deluxe
Click to expand...

i stand corrected, only speaking from experience in that it didn't do jack for my e8400 when taking it to the hilt! :)
 
corkyo4 said:
@gurusan

What temps are you getting with your E8400 @ 4.5GHz. Is your CPU water cooled??

Also what sort of Vcore and NB voltage are you pumping through that??

I am tempted to increase my E8500 above 4GHz but i dont know if its worth the hastle.
Click to expand...

Around 65C in prime and 88C in IBT :eek:
Cooling is only a little Scythe Mine, not water. For some reason this is just a very cool running CPU.

vcore is 1.344V and 1.42V northbridge (the gigabyte boards need WAY more nb voltage than the p5q series).

angela said:
thanks for letting know about gtl's.

didn't get about 1.20 fsb termination:rolleyes:
Click to expand...

GTL values are ratios of the VTT, which is called FSB-Termination on the Asus boards. So the .655 value I gave you is only good for 1.20V FSB termination +/- a .02V or so.

If you raise VTT to 1.26 or so I'd try .63 gtl
 
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gurusan said:
Around 65C in prime and 88C in IBT :eek:
Cooling is only a little Scythe Mine, not water. For some reason this is just a very cool running CPU.

vcore is 1.344V and 1.42V northbridge (the gigabyte boards need WAY more nb voltage than the p5q series).



GTL values are ratios of the VTT, which is called FSB-Termination on the Asus boards. So the .655 value I gave you is only good for 1.20V FSB termination +/- a .02V or so.

If you raise VTT to 1.26 or so I'd try .63 gtl
Click to expand...

I just checked my northbridge temp with everest because i had it on auto and it was 1.66v:eek: any ideas what i should put it on in bios please?
 
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