Heat - Caps/passive components

ibmkg · 08-25-2008, 06:10 AM

I just overclocked my P4 3.0Ghz HT @ 1.4V to 4.0Ghz @ 1.5V. It is fairly stable and if I work on it, I am sure it can go beyond that.

CPU temp is 48 C idle and goes all the way 60 with load. But that's beacuse room temp is 32C.

System temp varies with load 35-40C.

The thing that worries me is that the caps around CPU get hot. Like 50C and goes up to 70 with game play. Not only the caps but the coils and all the compenents get hot. Should I be worried?

billbartuska · 08-25-2008, 06:35 AM

You could add a fan inside the case to circulate air there. That would help.

I'd worry more about the northbridge. How are you cooling that?

ben333 · 08-25-2008, 08:40 AM

Yeah, I'd put a fan on the NB and another fan over the mosfets and voltregs. If they still get really hot and you think thats whats limiting your OC then you can take an old pentium style heatsink (pins with a thin base) and cut it into small pieces (like ram sinks) just big enough for each voltage regulator and attach them with super glue or thermal epoxy.

ibmkg · 08-26-2008, 06:05 AM

Northbridge has a stock Al heatsink. I just mounted a fan over it. It is cool enough.

I have not touched the MCH Northbridge and ICH south bridge voltage. And I don't know what FSB termination voltage is so it is also set to auto.

Southbridge is passively cooled. It has a small Al stock HS.

The Vregs had a small Al HS over them. I somehow managed to put a small fan over the V regs (used sticky tape!). It keeps the regs cool but not the caps located near the CPU (hidden by the Cu WB). That is because air can't get to it. I can add another fan but...! ugly and noisy!

BTW It's a P5WD2-Premium Mobo.

ben333 · 08-26-2008, 06:19 PM

You sure they are caps? As in capacitors? I've never herd of those getting hot.

If they become a problem then Maybe you can glue on a small piece of metal (real copper penny or some 1/8 inch aluminium) as a heat spreader.

08-25-2008, 06:10 AM	#1
ibmkg Cooling Savant Join Date: Jan 2005 Location: USA Posts: 129	Heat - Caps/passive components I just overclocked my P4 3.0Ghz HT @ 1.4V to 4.0Ghz @ 1.5V. It is fairly stable and if I work on it, I am sure it can go beyond that. CPU temp is 48 C idle and goes all the way 60 with load. But that's beacuse room temp is 32C. System temp varies with load 35-40C. The thing that worries me is that the caps around CPU get hot. Like 50C and goes up to 70 with game play. Not only the caps but the coils and all the compenents get hot. Should I be worried? __________________ NOTE: Suggestions are based on my perceptive. I could be erroneous. Therefore, no one has the right to criticize an individual other than rephrasing and or expressing his own annotations on the subject matter itself.

08-25-2008, 06:35 AM	#2
billbartuska Cooling Savant Join Date: Jun 2005 Location: Skokie, Illinois Posts: 322	Re: Heat - Caps/passive components You could add a fan inside the case to circulate air there. That would help. I'd worry more about the northbridge. How are you cooling that? __________________ My new rig.... Intel SE440BX-3, PIII 550 (@ 680) MX440 275/332 (@ 350/400) and 3DFX Voodo 5 5500 160/160 (@180/180) Two Opticals and 120 gigs (w/28gigs in RAID0) on 4 Maxstors

08-25-2008, 08:40 AM	#3
ben333 Uber Pro/Mods Join Date: Aug 2007 Location: New Hampshire (USA) Posts: Two hundred somethin Posts: 432	Re: Heat - Caps/passive components Yeah, I'd put a fan on the NB and another fan over the mosfets and voltregs. If they still get really hot and you think thats whats limiting your OC then you can take an old pentium style heatsink (pins with a thin base) and cut it into small pieces (like ram sinks) just big enough for each voltage regulator and attach them with super glue or thermal epoxy. __________________ Pro Slacker

08-26-2008, 06:05 AM	#4
ibmkg Cooling Savant Join Date: Jan 2005 Location: USA Posts: 129	Re: Heat - Caps/passive components Northbridge has a stock Al heatsink. I just mounted a fan over it. It is cool enough. I have not touched the MCH Northbridge and ICH south bridge voltage. And I don't know what FSB termination voltage is so it is also set to auto. Southbridge is passively cooled. It has a small Al stock HS. The Vregs had a small Al HS over them. I somehow managed to put a small fan over the V regs (used sticky tape!). It keeps the regs cool but not the caps located near the CPU (hidden by the Cu WB). That is because air can't get to it. I can add another fan but...! ugly and noisy! BTW It's a P5WD2-Premium Mobo. __________________ NOTE: Suggestions are based on my perceptive. I could be erroneous. Therefore, no one has the right to criticize an individual other than rephrasing and or expressing his own annotations on the subject matter itself.

08-26-2008, 06:19 PM	#5
ben333 Uber Pro/Mods Join Date: Aug 2007 Location: New Hampshire (USA) Posts: Two hundred somethin Posts: 432	Re: Heat - Caps/passive components You sure they are caps? As in capacitors? I've never herd of those getting hot. If they become a problem then Maybe you can glue on a small piece of metal (real copper penny or some 1/8 inch aluminium) as a heat spreader. __________________ Pro Slacker

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