On Sat, 28 Jun 2003 12:38:50 -0600
Beowulf wrote:

No Peltiers don't need big heatsinks - that's a misconconception and a

design flaw. They aren't popular since they were initially introduced

prior to the Pentium1 (several patents were filed);

Peltiers were _introduced_ in 1834 and the modern semiconductor version
in the 1950s. They predate the microprocessor by many years.

however, passive
cooling in those days was more than adequate. Passive cooling needs
big heatsinks - even with big fans - with today's CPUs. You will
still need to put in enough case fans to exhaust the heat your pulling
off. The biggest mistrake poeple make is not setting the heat pump
voltage properly or choosing the wrong heat pump. Many people
erroneously think that in order to cool the CPU (overclocked or not)
you need to chill it.
You don't . You just need to drop and regulate the temp to 15-20
degrees celsius - and thus no condensation.

What does that gain you over 30C?

These devices are
extremely efficient and effective at cooling. I have had great
success with them in the past. - not just for CPUs, but also for a
variety of scientific instrumentation.

Yes, they are efficient and effective but they still must dissipate not
only the thermal energy produced by the CPU but also the thermal energy
of their own power consumption. If the CPU needs a large heat sink with
a fan the Peltier also needs a large heat sink with a fan.

I don't use them anymore simply because it is easy and relatively
inexpensive to pick up a faster CPU, mobo, and/or graphics card.
Although I do a bit of gaming, mostly my PC runs office apps, www
browsing, a few DVDs, and some video/image editing, I only see a small

difference real world performance in overclocking. With 3GHz CPUs,
most tasks are done before I can reach for the mouse

Overclocking is not about "real world performance".

- anything that
may take a few minutes just means that I can check my email or go take
a **** while I'm waiting. Going faster the 100-150fps in an OPENGL
shooter at 1600x1200x32 full quality, FSAA 4x, etc, is just a bunch of
weenies
saying "mine's faster!" So what? I used to have the same discussions

with motor heads over whose car was faster. Big whoop.

If you don't want to participate in the hot rodding or overclocking
hobbies, then don't. But the only "weenie" I see here is the one who is
putting down others because of the hobbies they choose.

pete wrote:

Didn't I read somewhere that peltiers cause condensation around the
CPU? I'm pretty sure I did.

Pete

"J.Clarke" wrote in message
t...


On Fri, 27 Jun 2003 21:48:43 -0600
Beowulf wrote:



Water,or any liquid, is not an optimal cooling solution. Too
complex,
prone to leaks and an enginering nightmare. I am surprised that
overclockers and computer cooling freaks haven't yet discovered
Peltier thermoelectric heat pump chips. Stop living in the 20th
century!


I think if you investigate you will find that most overclockers who
usePeltiers these days (there is nothing new about their use in
overclocking) water-cool them. With a Peltier you're dissipating
theheat generated by the CPU and the additional waste heat generated
by thePeltier. If you can't cool the CPU without the Peltier then
you don'thave a chance in Hell of cooling the CPU _with_ the
Peltier. AndPeltiers introduce their own complications.



raj wrote:



can water cooling cause corrosion, cause I will be water cooling
mygf3 card as a test, then i will use my radeon 9700 pro AIW if
the outcome is good






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