Dual-Core Xeon support for HP XW6200

[BTS]

Hello,

My HP XW6200 workstation has 2x 3.2GHz Single-Core HT "Nocona" Xeon, 800MHz FSB, Socket 604, released June 28 2004 (P/N RK80546KG0881M). http://ark.intel.com/Product.aspx?id=28016

** CPU-Z suggests that my CPUs are actually "Irwindale" but I'm not sure if that's accurate

I would like to replace these with 2x SL8MA 2.8GHz Dual-Core HT "Paxville DP" Xeon, 800MHz FSB, Socket 604, released October 10 2005 (P/N NE80551KG0724MM). http://ark.intel.com/Product.aspx?id=27202

I have the latest BIOS from HP v2.10b released 12 October 2006. (download link below)

http://h20000.www2.hp.com/bizsupport/Tec...sp?lang=en&cc=us&prodTypeId=12454&prodSeriesId=409749&prodNameId=409751&swEnvOID=2002&swLang=13&mode=2&taskId=135&swItem=wk-44077-1


The problem is that tech support from both Intel and HP are incompetents and cannot tell me whether CPUs will be compatible. Intel keep saying that only HP can answer and HP keep reading from the manual (dated 2004) that only the Nocona series are certified as compatible.
By the looks of it, it should work but I don't want to buy two Xeon CPUs just to to give it a try.

I tried every possible software from the download section to open the Rom.bin bios file and see if I find a list compatible CPU's but all failed. Is there any way to open one of these HP bios files and find an answer to my question?


Thanks for your help.