Single sSpec code for this processor.... SLBV3. 1k USD off Intel Ark site new; about 70 USD eBay used. 95W max TDP.
I have always found in these processor upgrades that if one works then two will too. Work on getting things stable on one first, however.
There are a very very rare few processors that are not officially listed on the HP QuickSpecs that will still run. A fine point that may allow us to sometimes pull unexpected things off, but if you are getting help from someone who had done such a project please consider sharing that information.
There are some Z400s, for example, that can do what they should not be able to.......