the fan sucks tho- it's only like 3500rpm, and since it only pushes like 18cfm, it doesn't help much... the heatsink itself gets nice and warm, but I don't think the fan pushes enough air to remove the heat effectively... in my KX7, it was reading 120*F in the bios after 1hr of Memtest86 and a reboot... that's with the stock silver thermal pad and fan tho... you can add 25*+ to that temp to get the actual temp, due to the location of the probe on the kx7... so it's a lot hotter than I'd like, but it's passable... i'll bet it'd do well with a big delta or something on it tho... maybe I'll try it with the 7krpm 60x38 OCZ/Delta I have around here...
muddocktor- it MUST be copper... either that or steel or tungsten :D 'cause that heatsink is H-E-A-V-Y for such a little guy...
I typed the above ^ about 10 minutes ago... then I went downstairs and grabbed my dad's digital balance to see just how heavy these things are... I also measured them with my dad's digital calipers...
<TABLE><TR><TD>Heatsink</TD><TD>Construction</TD><TD>Weight</TD><TD>Dimensions (LxWxH)</TD></TR><TR><TD>"Old" Stock heatsink</TD><TD>Skived Aluminum</TD><TD>161g</TD>
<TD>63mm x 62mm x 36mm</td></TR><TR><TD>"New" Stock heatsink</TD><TD>Unknown</TD><TD>260g</TD><TD>60mm x 62mm x 31mm</td></tr><TR><TD>Globalwin CAK-38</TD> <TD>Extruded Copper</TD><TD>422g</TD><TD>60mm x 60mm x 35mm</td></TR><TR><TD>Hercules Gladiator II</TD> <TD>Soldered Copper</TD><TD>359g</TD><TD>75mm x 58mm x 35mm</td></TR><TR><TD>Thermalright AX-7</TD> <TD>Soldered AlCu Hybrid</TD><TD>433g</TD><TD>78mm x 77mm x 42mm</td></TR><TR><TD>Thermalright SLK-800A</TD>
<TD>Soldered copper</TD><TD>518g</TD><TD>88mm x 55mm x 40mm</td></TR></TABLE>
Notes:<ul>
<li>The stock heatsinks were measured with the shrouds in place
<li>The CAK-38 was weighed with the stock AMD clip because the Globalwin one broke
<li>The Gladiator was measured without the shroud because it was damaged
<li>Length is the clip side, Width is the other side, Height is the thickness from the base to the top of the fins/shroud.
<li>The SLK-800A was measured from the base to the top of the lowest fins, and at the maximum Length & Width
<li>The protective film on the SLK-800A was left in place
<li>While the balance and calipers read to 2 decimal places, manufacturing variances make the last 2 places irrelevant.
</ul>
So the new stock heatsink weighs a good bit more than the old one does, even though it's almost exactly the same size.