Can IBM xSeries 235 handle 64-bit processors?

Posted on 2010-08-20
Medium Priority
Last Modified: 2013-12-13
Hello Experts:

   I have a fairly straight forward question.  One of my clients wants to upgrade his Medisoft software to the latest version.  His current server is an IBM xSeries 235 running server 2000.  The new software will not run on 2000, so we thought to upgrade the OS on the server.  There are only 5 workstations in the office, so it's light duty.  Upon trying to install Server 2008 R2 standard, I received a message that the CPU's were not configured for 64-bit applications.  So, can I put 64-bit processors into this machine?  Currently they have two Xeon 2.4 Ghz Prestonia, socket 604 mPGA processors.  Main board is xSeries 235 - [86714QX] according CPU-Z.
Question by:jhuntii
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Expert Comment

ID: 33488945
I don't think so - the Prestonia Xeons are based on a 130nm process, and you would have to go with a 90nm process Irwindale cpu to attain 64-bit compatability. On top of that, the Irwindales run at 800 FSB, while the Prestonias run at 533 FSB. If your RAM is PC2100, it will have to be replaced with PC3200.  I think the differences will prevent this migration - far easier to install a 32-bit OS.

Author Comment

ID: 33516594
Thanks for the response.  OK, so would the Irwindales work on this motherboard?
LVL 69

Accepted Solution

Callandor earned 2000 total points
ID: 33516946
I don't think so - a different manufacturing process (90nm vs 130nm) is usually accompanied with a different chipset designed to handle the new processor.  And to top it off, Irwindales run at 800FSB, as opposed to the 533FSB that you have now.  That's a lot going against you.

Author Closing Comment

ID: 33544582
thank you very much for your help.

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