what did you get them for $$$$
is this it http://cgi.ebay.com/Shin-Etsu-Micro...tem&pt=LH_DefaultDomain_0&hash=item255a55d728
No, thats just shin etsu G751, which is still pretty good stuff that beats most thermal interface materials out there, but X23-7783D is the thermal paste you can get. Other good options are arctic cooling MX-2/MX-3, Tuniq TX-2/TX-3, Gelid GC-2 and GC-Extreme.