It is hard to tell with this listing. The "PROCESSOR KIT FOR PROLIANT DL360 G5 SERVER" could include something special like a unique fan or heatsink.
As far as the processor is concern, it should be the same. If you can get the s-spec number (SLBBQ), you can look it up at http://ark.intel.com/ProductCollection.aspx?series=33905
If the S-spec is the same , the processor is the same. Just the packaging may be different.
Also, warranty on an OEM processor may not be the same as the warranty on a Intel boxed version.