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You won't believe what I've been using! For the price of cheap silicon paste (.1 oz) I can get a CAN of general purpose lithium grease (32 oz) and it actually works as well if not better. It's made for machinery and has a melting point of over 90C.
As mentioned there are many types of non thermal paste can be used as thermal paste, toothpaste, lithium grease, vegemite, etc The problem is how these substitutes performs long term. Toothpaste dries out very quickly and becomes ineffective, the lithium grease likely to run out.
Depending what the cpu/motherboard is, there m might not be any thermal protection.
Substitutes i'd use for testing not long term but considering the cheapness of thermal paste, I don't see the point.
As per the Sanken SI-8008HFE datasheet:
"Volatile-type silicone greases may permeate the product and produce cracks after long periods of time, resulting in reduced heat radiation effect, and possibly shortening the lifetime of the product."
My first choice in quality Japanese electrolytics is Nippon Chemi-Con, which has been in business since 1931... the quality of electronics is dependent on the quality of the electrolytics.
That is lower than room temperature (ref. to 25c).
How is the temp measured? The reading in the BIOS? The HWMONITOR?
What is your room temperature?
Are you sure the reading is accurate?
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