overclocking a q9450 - issues with stability at 3.4+

[rjk]

hi there
i got a 9450 in my rig at the moment

[p5q-e /4gb dominator]

im having problems getting it to run at 3.2 or more - seems anything over 400fsb is causing crashes -

i have got the chip under water so its not too hot
and i havent raped the volts yet

fails prime after 30 secs on two cores at 3.2 or more

but im unsure of how the gtl reference works
and also what other settings i need to get it to play ball at 3.6/3.8

will post bios pics in a sec

anyone help rn me through things i need to look out for on a 45nm quad?

 

[rjk]

 

[rjk]

turned it back to auto on most options
i did my usual and set everything a little over the standard

but it didnt like it

anyone help?

 

[rjk]

well got it to run vantage at 3.2

100 points less than my q6600 at 3.4GHz

so a good start

it fails prime on the 3rd and 4th core after 3 mins though

temps are good but im still not sure what to do with the voltages

 

[vertica]

Posted this on another thread yesterday (stolen and simplified from one of the xtreme forums)

My Q9450 got to 3.15Ghz on stock voltage (1.25V)
I've had it up to 4Ghz on 1.4V (in windows) (500mhz fsb)

Get the gtl ref# voltage right helps lower the vcore required too (knocked about 0.05V off my vcore!)

Depends on bios as to how you set it, but with the 45nm quads, set all four lanes to:

-0.032*(fsb termination voltage)

e.g my fsb is at 1.3V so gtl ref# = -0.0412V -> -40mV in bios (yes these are -ve numbers)

 

[vertica]

looking at your pics again, i would suggest manually setting your fsb voltage to 1.3V and the glt refs to -40mv,

what ram config are you running? upping the NB voltage a notch may aslo help.

I've had my q9450 up to 4Ghz on 1.41v in windows, but i tend to keep it at 3.4Ghz.

dont push things much above 1.4v the chips can degrade quickly at much above this. 1.4v is considered a safe limit

 

[Sayso]

give fsb and NB more volts

 

[rjk]

ram is 2X2gb dominator 1066

explain the gtls to me
how do i set them?

just set to standard and up by 40?

dont understand the 40mv

the nb is fine at stock but i can put it up a bit - was thinking in the region of 1.4

3.4 stable would suit me down to the ground - the guy i got it off had 3.6 on it but i cant seem to get it to post over 450 fsb

 

[rjk]

what is considered safe fsb term voltage? just a few notches above stock?

thats what my q6600 ran at

 

[rjk]

still aiming for stability

settings now are
3.2GHz 400*8 [not ideal but am working on it]
doesnt like anythingover 400 fsb one bit

cpu voltage = 1.33750
GTL (0/2) = 0.640
GTL (1/3) = 0.680
cpu pll volts = 1.52
FSB termination volts = 1.30
dram = 2.10
NB volts = 1.12
NB gtl ref = auto
SB = auto
PCI/sata = auto

chugging away at prime nicely now

at least 3.2 is stable

going to look into gtl settings now and see if theres anything that can make sense of it

[could do with Cob wading in with his 'overclocking made easy' guidebook]

EDIT* posted too soon - core3 dropped out and failed after an hour - this is becoming a headache

 

[rjk]

give fsb and NB more volts

tried that and nothing

looking at your pics again, i would suggest manually setting your fsb voltage to 1.3V and the glt refs to -40mv,

what ram config are you running? upping the NB voltage a notch may aslo help.

I've had my q9450 up to 4Ghz on 1.41v in windows, but i tend to keep it at 3.4Ghz.

dont push things much above 1.4v the chips can degrade quickly at much above this. 1.4v is considered a safe limit

i understand that - was only going for a modest 3.4 - considering the guy i had it off got it to 3.8 on a Gigabyte G33, im pretty dissapointed with my p5q-e. it loved my q6600

anyone got any suggestions?

im getting windows failing to start
blue screens
tells me files are missing [then it starts fine]