First of all let me tell you the difference betweent the two,
Manufacturing Tech: 130nm / ~0.13 micron
L2 Cache: 512KB
Bus Speed: 533MHz
Chipset Supported: E7500
64-Bit Support: No
HT Support: Yes
Manufacturing Tech: 90nm
L2 Cache: 2MB
Bus Speed: 800MHz
64-Bit Support: Yes
HT / VT Support: No
Now addressing the main issue. My friend, the machine that you have been tasked with to install Windows Server 2008 64-Bit is a pretty old machine, perhaps ranging to 2002 to 2003 and comes with outdated CPUs that do not support 64-Bit whereas to install a 64-Bit OS, you need a 64-Bit CPU and motherboard that supports those CPUs. Irwindale is a 64-Bit CPU but then it still is an outdated line of Xeons which were released in 2005 and I am not sure if your motherboard supports them since motherboard itself backdates to 2002.
ADVICE / SUGGESTION:
My honest advice to you would be to go for a newer server because:
- It would not give you too many unforseen problems with Windows Server 2008 64-Bit edition.
- You would get prompt support on any issue from Intel Support since it would cover warranty/support.
- The power consumption and lower TDP would help cut down on your electricity bills giving you better per-watt performance.
- Would be scalable in case you decide to expand your infrastructure in future.
Last but not the least, your question was specifically related to Server and to receive a prompt response, please post your server related questions in our The Server Room community. However you are more than welcome to post any questions related to Intel vPro technology here and we'll be glad to help
FYI: Prestonia and Irwindale are codenames and it is a common practice not to use codenames in public rather, processor model number in order to avoid any discrepancies.
Hope the above answers your questions, for further information or queries, feel free to write to us.
Thank you and have a great day!
Intel Go Green, Save The Environment!
Simple answer, you're scuppered. It doesn't support 64 bit.
Here's a list of supported OSes:
Windows Server 2003
Red Hat Linux 7.1, 7.0, 6.2, enterprise's 5, 4, and 3