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Voltage Question about my Q9450

Last response: in Overclocking
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July 30, 2008 12:07:37 PM

Hi, I have my Q9450 overclocked to 3.4Ghz and i've been lowering voltages to find the lowest stable, but now i'm down to stock voltage again and it's still stable, i have also been lowering the NB Voltage too.
At the moment my voltages look like this:
CPU VOL: 1.25000V
CPU PLL VOL: 1.52V
NB VOLTAGE: 1.35V
FSB TERMINATION VOL: 1.36V
SB VOL: 1.050V

Specs are
Q9450
Rampage formula X48
4Gb Corsair XMS2

My question is should i carry on lowering voltages and if so should i carry on lowering NB voltages too and is there any other voltages i should also try lowering? at the moment my idle temps are 35-37c and loads temps are 55c and it has been pretty hot where i am.
thanks! :) 

More about : voltage question q9450

July 30, 2008 8:19:46 PM

also another quick question, real temp shows a 10c difference between core 1 and core 3 an example would be core0 56c, core1 54c, core2 47c, core3 49c is this normal

Edit: no body have any advice?
August 7, 2008 1:25:23 AM

Your temps look good. I'm also looking at voltages right now, as I can't get a stable clock at 3.4GHz. 3.2GHz runs fine but at 3.4, even up to 1.3V on the CPU, gets errors on Prime95. How long have you stressed the CPU to ensure it is stable? As far as temps though, mine, at 3.2GHz idle at 35 - 38C (depending on the core) and under load go to just under 60C. Ambient temp here is 27C...nice and warm. My NB voltage is at 1.26V for 8GB RAM.
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August 8, 2008 5:38:28 AM

i stressed the CPU for 12 and a half hours, my temps are cooler now as ambient temp is lower now. 34c idle, 53c load.
so do u or anyone else think i should carry on lowering temps or maybe try and get a bigger overclock?
August 9, 2008 5:08:46 PM

Try and get that Front Side Bus Termination Voltage down.

I believe 1.36V is the absolute limit that a q9450 can handle on a 24/7 basis. Any more and you are putting your chip in some danger...

Look at this quote from a thread that I started... I am currently overclocking a Q9450 too

1haplo said:
Intels VID Range for the Q9450 is 0.85V – 1.3625V. 1.25 Volts is great. The only thing you must look out for is the VTT termination voltage.

Here is a quote from AnandTech
"Let this be a warning – do not go over 1.4V maximum for 24/7 use! We are certain that the high VTT voltage and extended testing was the cause of death, as we made no other major or obvious changes within the BIOS that could have instigated a failure. Obviously, we tried to boot the processor in a number of other motherboards without success before we decided to post our results up."

Here is the link
http://www.anandtech.com/weblog/showpost.aspx?i=428

A good rule of thumb is only go 10% over max voltage listed on the box. Each CPU is different. Even each batch is different. You may get lucky and get a great batch that will overclock to 3.4 on stock voltage, or you may have to bump it up to 1.3V to get 3.4.

1Haplo

August 11, 2008 12:40:26 AM

ok, i wasnt aware of that fact, i will def lower it down if i can, thanks : )
August 11, 2008 12:46:22 AM

ok i have lowered the FSB termination down to 1.26V lol its a big drop i know but i'll test it and see how it go's and i will post my results
August 12, 2008 2:56:30 PM

ok well it passed 14+hours of prime95 on small FFT's and blend. my settings look like this:
CPU VOL: 1.25000V
CPU PLL VOL: 1.52V
NB VOLTAGE: 1.35V
FSB TERMINATION VOL: 1.26V
SB VOL: 1.050V
i think i'm just gonna stick with this, thanks guys
if any one has any other comment or anything they wanna suggest please do
August 12, 2008 4:25:33 PM

munchies said:
ok well it passed 14+hours of prime95 on small FFT's and blend. my settings look like this:
CPU VOL: 1.25000V
CPU PLL VOL: 1.52V
NB VOLTAGE: 1.35V
FSB TERMINATION VOL: 1.26V
SB VOL: 1.050V
i think i'm just gonna stick with this, thanks guys
if any one has any other comment or anything they wanna suggest please do


Lookin' Good!

- Witt
August 12, 2008 5:01:01 PM

that is sweet. Do you know your Stepping/Revision?
!