Re: Intel stock vs heatpipe cooler
- From: "RxK" <nospam@xxxxxxxxxxx>
- Date: Fri, 11 Apr 2008 19:42:20 +0100
Hello thanks for your repsonse.
You covered what I've been postulating about !
A couple of days ago I replaced the Intel stock heatsink and fan - fitted
with cpu at same time approx. 6 months ago, and noticed that its'
pre-applied thermal paste, had evidently not "spread out," very much at
all. It had sort of remained quite thick, and was covering just the centre
third area of the "cpu lid," resulting in the compound forming almost a
complete "barrier" between cpu and heatsink - instead of, as is desired, as
much metal to metal contact as possible, and any uneven-ness between those
surfaces, assisted by a very thin and only the required of compound, if you
see what I mean.
Anyhow, after cleaning that off, and fitting the Akasa heatpipe cooler, its'
pre-applied paste was obvously much softer and upon fitting it, the initial
excess quickly "squeezed out," ...this was not excessive but, was obviously
a thermal paste with a superior and more carefully designed "viscosity,"
than the stuff that was on that stock Intel heatsink.
....and at idle, core temp. is 31 deg. C with Akasa, compared to the 38 deg.
C. it had always settled at with Intel stock h/s, when idling.
When making the cpu do lots of work, now with Akasa on it, core temperature
stays significantly below the 48 deg. Cent. is used to go up to when the
Intel h/s was on it.
....leaving me with the suspicion that all I had needed to do, (if I had been
aware that the stock Intel h/s was not providing the level of cooling
performance it could have been providing, if had been fitted with a half
decent thermal compound), was to replace the thermal compound, instead of
replacing the whole h/s / fan assembly !!
regards, Richard
"M.I.5¾" <no.one@xxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:47ff20d2$1_1@xxxxxxxxxxxxxxxxxxxxxxxxx
"RxK" <nospam@xxxxxxxxxxx> wrote in message
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Sorry for being a bit off-topic but, surely there's lots of builders inThere are various types of thermal compound around these days. The most
here.
I've built lots of boxes in the past and never really dabbled with
"super" cpu coolers i.e. stock heatsink and fan always did a sufficient
job.
A few months ago I upgraded my faithful old XP2600 Barton Skt. A to a
D935 Conroe cpu, on a "Conroe" motherboard, and during lots of digging on
the web, at that time, noticed observations that the Pentium D's ran
"hot" compared to others. My "D" core always idled at approx. 38 degrees
| 42 degrees under load. Yesterday I fitted a cheap Akasa triple heatpipe
cooler and noticed that the thermal "paste" was quite soft. When I
removed the stock Intel heatsink it appeared that the thermal compound
was quite thick, (obviously it had "cured"), but it hadn't spread out
very much, suggesting that it was perhaps too thick, or "aged," when I
originally fitted the thing.
I'm not going to try it just to satisfy my curiosity but, do you think
that if I cleaned that up, and refitted the stock h/s with a good quality
thermal compound, that it would run a lot cooler ?
common type looks a bit like thick white or silver grease and will always
appear to be soft even after many hours of operation. There are cheap
variations on this type that dry out with use and are not to be
recommended. There is also a newer type known as phase change thermal
compound. This comes in various forms including pre applied to a
heatsink. It is quite firm to the touch, but the idea is that as it warms
up it changes phase and flows into all the gaps between the processor and
heatsink/pipe. This latter type is gererally considered the best type and
some processor suppliers won't honour a warranty if any other type is
used.
It should be remembered that thermal compound of any type is not actually
particularly thermally conductive and should not be liberally plastered
over the processor or the heatsink. The idea is to apply just enough to
fill the tiny air gap that would otherwise exist between the processor and
the heatsink as the compound conducts heat better than air. I bough a
50ml tube several years ago and have barely used a fifth of it despite
overhauling many power amplifier circuits.
.
- References:
- OT: Intel stock vs heatpipe cooler
- From: RxK
- Re: Intel stock vs heatpipe cooler
- From: M.I.5¾
- OT: Intel stock vs heatpipe cooler
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