Effect of FSB & Voltage on Temperature ..

blackninja · 18 Jul 2008 at 13:07

Someone might find this useful!

I have just removed/repasted/reseated my TRUE after knocking it accidentally and then having increased temperatures so I did my usual test after putting it back - the image shows my Q6600 undergoing a small FFT Prime95 run going from (stock) 1.17 load volts to 1.39 load volts which is the first jump and then the FSB from 277 to 423 which is the second jump ...

Still running so looks ok

Greebo · 18 Jul 2008 at 13:39

i am more amazed you have a q6600 which runs at 3.8ghz at 1.39v :eek:

i wish mine did

blackninja · 18 Jul 2008 at 13:51

That's volts under load as reported by the abit mGuru .. I have to set the BIOS to 1.4750 volts to get this stable @ 3.807 GHz

Greebo · 18 Jul 2008 at 14:17

blackninja said:
That's volts under load as reported by the abit mGuru .. I have to set the BIOS to 1.4750 volts to get this stable @ 3.807 GHz

I knew that but that is still very, very, very impressive.

I thought mine was good a 1.55v in bios. If you look at the q6600 database on here you will see many q6600 needing far in excess of 1.39v under load to get even 3.3-3.4Ghz.

From memory the three people with 4ghz q6600 chips needed in excess of 1.55v under load to get that stable.

Mine will boot at 4ghz with 1.67v in bios and about 1.59v under load but fails prime within seconds.

I reckon yours might be good for 4ghz with only 1.39v needed for 3.8ghz. Lucky bugger.

blackninja · 18 Jul 2008 at 14:33

Like this you mean ?

Though I have chosen 3.8GHz as a 24/7 setup to ensure a bit of risk mitigation!

mmorpheus1 · 18 Jul 2008 at 14:33

sure the multi isnt set to 8

Greebo · 18 Jul 2008 at 14:35

blackninja said:
Like this you mean ? Though I have chosen 3.8GHz as a 24/7 setup to ensure a bit of risk mitigation!

I really hate you now

And playing the "1.39v is in windows under load and not bios" card as if everybodies q6600 only needs 1.39v.

Going away now and ignoring this thread cause you are just bragging

blackninja · 18 Jul 2008 at 14:46

I only wanted to demonstrate the temperature for a voltage rise and for a FSB rise cos some folk think that voltage is the determinig factor ... but clearly FSB is also a major factor in what the temps are gonna be - and it is a significant amount too!

As it happens ... cos I managed 4GHz under air my thermochill 120.3 rad is sitting in a box in the garage along with the rest of the wc paraphinalia waiting for a chip that it'll actually be worth the hastle to watercool!

That voltage could be for 8x ... though that was ages ago and my recollection is bit vague .. sod it I'll have another go!

Nick1881 · 18 Jul 2008 at 14:57

Nice chart

My Q6600 needs 1.55v in the bios to make 3.6Ghz, it might run with less but i'm too lazy to try.

edit - now back to 3.7Ghz so my sig is right