fsb oc on QX6700

[Rayvin52]

This may seem like a dumb question with an obvious answer, but is it normal to have a QX6700 (b3) running a higher core temp with a lower clock setting but a higher fsb? When I run it with a multi of 9 and fsb of 1333 (3ghz) I get an idle core temp of 51c. When I run it with a multi of 12 and fsb of 1066 (3.2ghz) the temp drops to 34c. I know it's designed for an fsb of 1066--are the much higher temps just due to the increased speed of the fsb, since it's used to communicate between the 2 core2 procs? I would think the freq of the procs themselves would contribute more to the overall heat than the fsb...
Naturally I'd rather oc the thing to 3.33ghz using a multi of 10 and an fsb of 1333, but when I do the temps are up to 75c under load.
I'm using a GA X38 DQ6 board, which handles the 1333 fsb easily. I'm cooling the cpu with a Monsoon2 TEC...
Any help would be appreciated.

 

[Don66]

Get a different cooling setup.

The Monsoon works O.K for dual core, but Fails when used with a quadcore.
The tec can't handle the heat output.

Watercooling works nicely, or get a high end hs/fan setup.

 

[The-Noid]

I would recommend the Corsair Nautilus or the new Swiftech all in one dual radiator watercooling setup.

Both are very friendly and easy setup and use.

Obviously a custom setup from Petras is going to be better, but these are VERY EASY to setup.

Any questions feel free to pm me.

Thank you.

 

[Rayvin52]

Thanks for the advice on the cooling situation. I just upgraded to the Monsoon from a Zalman 9700, and it is much more effective than any air cooling, so if I were going to upgrade I would go to water, I guess. But my actual question was really whether it's usual to see a jump in temps just from raising the fsb on a QX6700, even though I lowered the actual freq from 3.2 to 3 ghz.
I'm actually fine with running it at 3.2 on a 1066, just figuring that since it's designed to run on a 1066, the 1333 is too much for it...

 

[Idontcare]

Originally posted by: Rayvin52
This may seem like a dumb question with an obvious answer, but is it normal to have a QX6700 (b3) running a higher core temp with a lower clock setting but a higher fsb? When I run it with a multi of 9 and fsb of 1333 (3ghz) I get an idle core temp of 51c. When I run it with a multi of 12 and fsb of 1066 (3.2ghz) the temp drops to 34c. I know it's designed for an fsb of 1066--are the much higher temps just due to the increased speed of the fsb, since it's used to communicate between the 2 core2 procs? I would think the freq of the procs themselves would contribute more to the overall heat than the fsb...
Naturally I'd rather oc the thing to 3.33ghz using a multi of 10 and an fsb of 1333, but when I do the temps are up to 75c under load.
I'm using a GA X38 DQ6 board, which handles the 1333 fsb easily. I'm cooling the cpu with a Monsoon2 TEC...
Any help would be appreciated.

I beleive it depends what mobo you are using, but for me (B3 QX6700 on Striker Extreme) what happens is if I start shifting my FSB then the my EIST (or whatever cool'n'quiet is for Intel chips) gets shutoff.

So instead of dropping the Vcore and reducing the GHz on my idle QX6700 the sucker runs at standard Vcore and GHz settings even when idle.

This only happens (to me anyway) when I monkey with the FSB. If I leave the FSB at 1066 and monkey around with the multiplier then EIST works just fine.

Personally I don't care because I run my system at 100% CPU load 24x7, but this is my first suspicion when I read your post.