Hmm, tempting.
I bought two of the $15 ones from ZZF a couple of weeks ago, though
less than $2 AR isn't bad to have a spare / future use one additionally,
especially since it supports several socket types and could be handy for
almost any current or reasonably older CPU.
After reading up on them and seeing them in person it's clear they majorly
goofed on the design of these --
a) they're WAY TOO big / heavy and aren't really efficient at all for their gargantuan
size; several models of good single-fan heatsinks that are around half the
size / weight perform as well or better as this one under pretty high load.
b) the plate that holds the heatsink to the motherboard shouldn't screw on the
bottom, or at least should have been designed with another 3mm clearance
between the bottom of the heatsink and the bottom of the holding plate.
As it is now it's so close that a little warping or misalignment or little lapping
and the heatsink holding plate will be in high danger of rubbing on the
CPU socket SUPPORTS with bad (or no!) contact between the heatsink base
and the CPU IHS top. It's especially bad for S775
where the S775 CPU socket's hinged loading plate/clamp sticks up over the
top of the CPU IHS and could contact the cooler's holding plate if there's any
alignment problem.
c) too thin, too long, too curved heat-pipes don't transport a lot of heat
all the way from the base to the fins efficiently.
d) half of the aluminium fins on the top fan deck area don't even come down
to the base of the heatsink so they're kind of impaired in their usefulness
especially since the heat-pipes don't pipe heat up there very well.
e) the heatsink fins are too close together to get good airflow through them
so even with a powerful 63 CFM pair of fans on top the airflow making it
THROUGH to the motherboard is really kind of small.
f) they should have included a S775 back-plate.. what were they thinking?
g) they should have had it easier to screw in both the heatsink to the motherboard
as well as the motherboard to the case (given the heatsink being big
and making access to the upper top left and middle motherboard screws
difficult).
h) It's so heavy you could really permanently warp or crack your motherboard
or CPU socket's solder contacts if you're unlucky especially if the PC gets bumped
or the heatsink gets pushed / bumped while it's screwed on.
That being said, I agree that it's much better at cooling than any
$1 or $15 heatsink I know of, so it's a good deal in that respect.
I'd be looking at another model though for $30 or over, though, no doubt.
In other respects it's probably more like a 30 minute very delicate install-job
rather than the 1 minute job that most any much smaller cooler would be. e.g.
plastic clips vs bolt on, having to take the motherboard out and reinstall it with
the HS installed vs. HS installation with the motherboard in the case, not
being able to access cables and RAM and stuff with the HS installed vs. having
clear access with a smaller heatsink etc.
If you install it right the first time then don't plan to touch the heatsink / RAM /
motherboard cables under that area for 2 years, it's arguably a good deal;
if you have to reinstall it for motherboard accessability or
cooling functionality problems due to instalation issues, it's going to be the
cause of some cursing and fretting.
I'd say it's a better choice for AM2/S39 than S775 given the backplate situation.