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 my ai7's pwm temp reading is freaking high!, typical ai7 problem, mosfet overheating

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TScweehong
post Apr 1 2006, 08:33 PM, updated 20y ago

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i really need ur help here guys, i'm using ai7 to pair up with prescott 3.0E...i know most of you would say no no to this both combination shakehead.gif because the mosfet just can take it unlike those p4p800 series where their mosfet are much bigger and better. so currently i'm stuck at 15x240Mhz= 3.60GHz@ vcore at 1.4785v, if i push higher fsb, i'll had to raise the vcore somemore and the pwm reading will hit 95-105c which is just unacceptable, in fact so unacceptable that the mobo auto restart by itself. so the question now is anyway i can cool down the mosfet, has to be practical though not like simply open the case window and put a table fan blowing on it... doh.gif i'll already purchase the 1set of CM chipset HSF(10pcs) and going to sink it but is that going to be adequate in terms heat dissipation and is it going to be enough to cover all the mosfet cause i can't really differentiate properly which is the mosfet tongue.gif. i'm using hyper 6 to cool my cpu and i was thinking to change to xp-120 cause it's fan can cover most of the top side mosfet but the problem is can it fit into my ai7 mobo rclxub.gif so please if anyone here got any experience like me in the past, please enlight me with some guide and advice so that i can achieve higher o/c...any constructive advice and comment will be much much appreciated. thanks a lot in advance guys.

oh ya, btw, i also thought about mounting a small vga fan on top of the hsf for the mosfet but the gap between psu and the hyper 6 is too small that no fan can actually fit in.
allenultra
post Apr 1 2006, 09:49 PM

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my experience with p4p800 and AI7.

p4p800 died! some smell around the mosfet area.
Asus better? from my experience. nope.
happened the same for kucingfight.

I able to cool down my mosfet very well with xp90, temp always keep below 50c.

2.8c @ 3.4ghz , 49c
PWM, 49c

how about ur casing airflow?
nelza_ax
post Apr 1 2006, 09:56 PM

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ur prob same like mine..i using abit is7eg2..my pwm temp is hot..like hell..sumtimes it will autoshutdown..very scary.. sweat.gif



forget to add
i'm only using the default vcore..


This post has been edited by nelza_ax: Apr 1 2006, 10:01 PM
Shah81
post Apr 2 2006, 01:40 AM

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this a known problem when using a presscott with an 865 or 875 chipsets. this is because these boards is not originally design for the power hungry presscott.

you can paste heatsinks to the mosfets and i think that will be adequate. here's a picture of the mosfet on your mobo circled in blue. you can cut-up some heatsinks to fit on to the cramp spaces.

user posted image
click on the thumbnails

 

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