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08-07-2021 09:51 AM - edited 08-07-2021 09:53 AM
Yes, XP x64 would work on either model.
Make sure you know how to either slipstream the storage controller drivers or have a USB floppy disk drive to add the drivers using the F6 prompt at the beginning of the installation.
If you don't want to be bothered, you can change the BIOS setting from AHCI to IDE and install XP without the need to load storage drivers, but bear in mind, the drive performance will suffer considerably.
The 8300 Elite has USB 3 ports, so those won't work on XP. I think there is a setting in the BIOS to make them emulate USB 2.
The 8300 Elite was the last HP Intel business desktop that had support for XP.
08-07-2021 10:38 AM
You're very welcome.
If all you are going to do with the PC is one task, the IDE BIOS setting should work good enough.
If you find the performance too slow, then you will probably want to install XP in AHCI mode and there are guides on the internet for how to slipstream the storage controller drivers.
I ran XP Pro x64 on my HP 8200 Elite CMT and it worked great. I used a FDD to install the SATA AHCI drivers.
At work we used to have the older HP dc7800 PC's with XP 32 bit installed in IDE Mode and I didn't find them unbearable to use.
In AHCI mode the drive can find data faster...see this article...