Fastest CPU for a 1st Generation Dell 1950

I currently have a Dell 1950 with a pair of Inter 5335 CPUs that I want to upgrade to the fastest available for it but, I can not find information on what the fastest CPU that will work in the server. Does anyone know what the fastest CPU would be or where I can find documentation for it?
jfhollowaySr. Systems AdministratorAsked:
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dbruntonConnect With a Mentor Commented:
The X5365.
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dbruntonConnect With a Mentor Commented:
From http://store.flagshiptech.com/dell-poweredge-1950-cpus-processors-heatsinks/

Generation I system boards (motherboards) support Intel Xeon 5000/5100 series dual-core processors only.  They will NOT work with any quad-core CPUs like the 5200/5300/5400 series with 6M/8M/12M cache, respectively. Example Generation I system boards for the PowerEdge 1950 include CW954, D8635 and NK937.

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From http://commweb-ps3.us.dell.com/support-forums/servers/f/956/t/19545038

Yes, I can confirm that the 1950 II and III support the X5365.

The original 1950 supported processor families Dempsey and Woodcrest
The mark II added support for Clovertown
The mark III added support for Wolfdale and Harpertown(Support for Dempsey was removed)

The X5365 appears to be the most powerful of the Clovertown family: http://ark.intel.com/products/codename/23349/clovertown

Please note that not all processors within a family are compatible. There may be a few that we have not validated, so always check before purchasing a processor.

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Hmm.  And you are running a 5335 in it and you have a first generation 1950?
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PowerEdgeTechIT ConsultantCommented:
Yeah, it can't be a G1. At least not the board.
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jfhollowaySr. Systems AdministratorAuthor Commented:
It is definately has 2 quad core 5335's. I thought it was a Gen 1. How can I tell for sure? I bought it from a reseller.
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jfhollowaySr. Systems AdministratorAuthor Commented:
I can get a pair of 5465 but, I am not sure if they will work. Will they work?
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PowerEdgeTechConnect With a Mentor IT ConsultantCommented:
1. It will have a II or III in the upper-left corner of the front of the chassis (on the rack dog-ears).
2. It will show under the Revision field on the System, Main screen, Information tab of OMSA (if BIOS is 2.1.0 or later).
3. It will show in the components list of the order details for the chassis (enter the Service Tag on support.dell.com).

Any 5400-series proc will only work in a III. The 5465 does not exist, but the 5460 and 5470 should work (only in a III, and only if all system firmware is up to date).
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dbruntonConnect With a Mentor Commented:
Read this link http://store.flagshiptech.com/dell-poweredge-1950-cpus-processors-heatsinks/

It'll help you identify which board you have in it and which Generation of 1950.  With that information we can determine which CPU is best.  If your board is Generation II you can't use the 5465 processors so find out which board you have.
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jfhollowaySr. Systems AdministratorAuthor Commented:
Thanks I found it. The server is a gen2. What would be the fastest for the Gen2?
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jfhollowaySr. Systems AdministratorAuthor Commented:
Thanks to everyone. I am definitely keeping that link for future reference
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