adding extra intel Xeon processor to dell poweredge sc1420 motherboard what about the additional cooling shroud


I recently started using an old Dell Poweredge Server SC1420 again for a single application (but quite intensive from time to time).

The dell Poweredge SC1420 has one Intel Xeon CPU Processor 2.8 GHz 800 MHz installed.

The motherboard however has room for an additional CPU.

On websites (like Ebay) Intel Xeon CPU's are offered really cheap so i'm thinking off buying an additional CPU and shroud cooling system (i am running a64 bit OS so it should be supported).

the problem is that the sellers of the second hand CPU's also list the model number of the CPU the are selling, for instance :

model : 604 SL8RW

i know the 604 is about the connector size, which is the same as my poweredge server.  but the model nr (in the example SL8RW) i can't seem to find for my system using tools like Intel® Processor Identification Utility

is it important that the model nr is exactly the same as the one that is installed ?  and if so, how can i determine the EXCACT model nr of my intel® Xeon Processor?

Another thing is the shroud cooling system for the second CPU.  Does anyone know this is the same shroud cooling as the cooling for the 1st CPU ?  i find second hand refurbished CPU's + shroud system for the first CPU but not for the second.

The dell support site, gives me details about installation but not the info whether or not it is the same shroud system.

Here is the info from the dell website :

Does anyone has experience choosing a second CPU for a similar system ? is the Intel model nr relevant ?

any informations are welcome !

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CallandorConnect With a Mentor Commented:
SL8RW is the cpu model and needs to match, if you are considering dual cpu platforms - the two cpus must also have the same stepping, which is a manufacturing term.  SL8RW is this:  If you want the exact spec of a cpu, CPU-Z should tell you:

However, a Xeon 2.8 90nm Nocona is so slow that a bottom of the line AMD cpu like the Athlon II 245 Regor would run rings around it - has the Xeon 2.8 rated at 514, while the Athlon II 245 rates 1659.  If your objective is to get additional cpu power cheaply, you could upgrade to a low-cost modern AMD cpu, motherboard, and RAM and get much better performance.  At some point, it isn't worth it to run modern software on such old hardware.
ggc2Author Commented:
Thank you for your insight !

i just figured an old server might be up to speed with a regular workstation, apparently it isn't anymore.

i will stop looking for upgrades and use the Dell server until it is no longer up to the workload.  For the moment it is, so i have plenty of time to look around.
ggc2Author Commented:
Another question if i might ask :

the dell poweredge SC1420 has a Perc 320 DC raid controller (also known as an Adaptec 2200s controller) and has two Seagate Cheetah® 10K.7 Ultra320 SCSI 73-GB Hard Drives running in Raid 0 configuration.

are these components worth considering for adding to a new "custom made" workstation or are these components also no longer up to speed ?

I really would appreciate your suggestions, since it been a long time i have been configuring computers myself.
The Cheetahs were very speedy in their day, but SCSI is no longer the fastest game in town, and SCSI drives are not cheap.  SATA and SAS drives are the fastest conventional drives, with the WD Velociraptor the choice of many.  For ultimate speed, solid state drives with a SandForce controller or from Intel will be the ones to go with.
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