I found an old Dell tower pc. I think it’s about 2004 vintage. It has a pentium4. I almost left it but decided maybe it had some heat sinks. I had no idea how hot pentium4 runs. This thing has a massive heat sink with heat pipes and cooling fins and a shroud and 9x9cm 12 v 2.5a fan. The fan blades are metal which I don’t think I’ve seen in a pc before. This pentium4 chip must melt without a heat sink.
It’s over kill for the LimeSDR but there are other heatsinks in the mainboard and the pcie GPU which may find a new purpose.