"Leigh-Anne Mills" said:
Thinking of replacement of the intel stock cooler. Has any one used the
following coolers and had any problems or just any input.
Coolermaster Hyper48 Cooler or
Artic Cooling Freezer 7
If there is any better for a 775 intel 3.6GHz (660)
Thx
LA
For your amusement, second picture from top. Zalman 9500.
The curve Zalman shows for this product is not meaningful,
and we'll need to see a review to see a theta value
(in degrees C temperature rise per watt of power) for
the heatsink.
http://www.overclockers.com/articles1237/
http://www.quietpc.com/uk/amdcooling.php#9500
In this ratings table, note that the heatsinks are not
being compared at identical noise conditions in all
cases, so the comparison is not completely fair.
http://www.overclockers.com/articles373/p4sum.asp
This is an example of the way a test should be conducted.
Look at the plot at the bottom of the page, as it shows
how noise trades off for cooling ability. Subtract about
20dB from the stated noise readings, when comparing to
other reviews. It looks like the XP-120 in that case,
is giving inaudible performance with a theta of 0.18C/W.
If room temp is 25C, air temp inside the computer is
32C, and you used a 0.18C/W heatsink on a 80 watt
processor, the CPU temp would be 32C+(0.18C/W * 80W) = 46.4C
(Actual power reading of a 660 processor = 80 watts or so)
http://www.hardtecs4u.com/reviews/2005/leistungsmessung_intel/index7.php
The toughest part of using all these oversized heatsinks
is the mechanical fit. I think a poster in the last couple
days, mentioned a Hyper48 would not fit his P5AD2-E, due
to the capacitors near the socket. You need to use every
scrap of mechanical data (manuf. web site, compatibility
lists if they exist, review sites etc.) you can find, to
avoid buying a product that will not fit.
Fit details to check for:
1) heatsink bumps into capacitors (cylinders) around the socket
2) heatsink bumps into Northbridge cooler
3) heatsink overhangs DIMM slots, so DIMMs cannot be
(easily) removed
4) heatsink bumps into Vcore MOSFET cooler
5) heatsink bumps into the connector stacks on the back of the
computer
6) heatsink extends above the top edge of the motherboard,
and bumps into the PSU. The clearance between the motherboard
edge and the PSU can vary from 1-10mm or so, and a roomy
computer case will help with this issue.
You also want to see how the clamping scheme works, as
some of them are tricky to install.
While the XP-120 looks like a nice solution, remember that
you have to buy a fan separately, and check to be sure
that if there is a separate adapter kit for a LGA775
socket, that you buy that as well. Buying a fan can
be annoying, as you will want a fan with a tachometer
readout, and many fans are intended for computer case cooling,
and have no tacho output. If you plug a fan with no tacho
output, into the CPU fan header, many motherboards will
shut down at POST.
HTH,
Paul
