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Old 10-03-2011, 12:58 PM   #1 (permalink)
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Default Good way to cool CPU Mosfets?

A while back I had a thread about overclocking my i5 750. The chip seemed to run stable at high clock speeds but the issue was that the mosfets around my CPU were getting far to hot. At the time I was using the H70 that I won from the F@H contest but I've since removed it and gone back to my old XIGMATEK rifle because it allows for better airflow. I've also upgraded my case from my old Centurion 590 to a HAF 932. I was really hoping the the increased airflow would help cool the mosfets but I'm still running into the same problem.

This is my MoBo: Newegg.com - ASUS P7P55D-E LGA 1156 Intel P55 SATA 6Gb/s USB 3.0 ATX Intel Motherboard
This is the old thread: Overclocking my i5 750 again...

The air flow around my CPU should be fine with my case so would it be worth buying a heatsink for my mosfets?
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Old 10-03-2011, 07:55 PM   #2 (permalink)
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Default Re: Good way to cool CPU Mosfets?

It's a pain but I would remove the mosfet sinks and check the thermal tape. Because of the design they can't use thermal paste so they use thermal tape. But sometimes the tape isn't applied just right and it doesn't make good contact with all the chips.
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Old 10-03-2011, 10:20 PM   #3 (permalink)
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Default Re: Good way to cool CPU Mosfets?

Is it the chips underneath the heatsinks or the ones next to the heatsinks?
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Old 10-04-2011, 06:46 AM   #4 (permalink)
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Default Re: Good way to cool CPU Mosfets?

The chips underneath the sinks.
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Old 10-04-2011, 08:43 PM   #5 (permalink)
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Default Re: Good way to cool CPU Mosfets?

If I remove the mosfet heatsinks will I need to apply new thermal tape? If I need new tape is there any high performance tape that I should use? I'm not to familiar with different types of thermal tape.
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Old 10-05-2011, 02:41 PM   #6 (permalink)
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Default Re: Good way to cool CPU Mosfets?

I think it was Slay who suggested this to me: Akasa Thermal Adhesive Tape AK-TT12-80 80x80mm Square

When I was trying to connect a northbridge hs, and I didn't have any retention brackets. Works nice.

Edit: Not sure if it was from that store, can't remember when I bought it nearly a year ago.
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Old 10-05-2011, 04:43 PM   #7 (permalink)
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Default Re: Good way to cool CPU Mosfets?

You can probably reuse the old tape if your careful but it never hurts to have some new stuff in case something happens. This is the same type of thermal tape that most companies use.

Thermal Pad 120x20x1mm for Ramplex, Innovatek, Mips, & Koolance Products Model: 19040 [19040] : Performance-PCs.com, ... sleeve it and they will come
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Old 10-05-2011, 06:27 PM   #8 (permalink)
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Default Re: Good way to cool CPU Mosfets?

I honestly like thermal adhesive more than the tapes, but, be warned the stuff doesn't let go, ever.
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Old 10-05-2011, 07:02 PM   #9 (permalink)
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Default Re: Good way to cool CPU Mosfets?

The mosfet heatsinks are secured with screws to the mobo so sticky thermal tape and thermal adhesive/epoxy are not needed. Or at least my mosfet heatsinks are secured with screws, yours may have a push-pin type of system but the result is the same. I would buy the thermal tape I linked to above, at $3 I would buy two.
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Old 10-05-2011, 08:49 PM   #10 (permalink)
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Default Re: Good way to cool CPU Mosfets?

Why use tape with mostfets that are secured that way? That style, I just use regular old thermal paste on them, tapes are more for securing things with out the clips/screws.

Oh, wait, your talking about those grease covered foam pads, not actual thermal TAPE, my bad. XD
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