You don't mention how much the heatpipe heatsink costs... =)
Was a smidge over £100inc VAT..
Rare as **** and not many people seem to be aware of its existence.
Its from the newer SKU's, HP released a BIOS update that allows more CPU's to be fitted, some of those are above the stock 35w so they dropped the new heatpipe heatsink for those with higher TDP...