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September 12th, 2025 13:54
Upgrade a Precision T7400 processor to accept Win 11?
I was given a superseded Precision T7400 several years ago. I've steadily upgraded it with later processors and more RAM. Currently it has two Intel Xeon X5470 quad processors (3.3 MHz) and works well with Windows 10. However, Microsoft's latest rules around win 11 state that although my processors are fast enough, they must be a minimum of 8th Generation and higher which makes it suitable for TMP 2.0 and Secure Boot.
The processor mount is LGA771 Socket: Is there a processor for the T7400 motherboard that will solve my problem please?
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mazzinia_
4 Operator
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1.4K Posts
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September 12th, 2025 16:09
No, you cannot do anything for the cpu. But ..
Release Flyoobe 1.11 · builtbybel/Flyoobe · GitHub
you can use this, to install win11
PapaPee
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27 Posts
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September 12th, 2025 18:50
You can't get the cpu to 8th Gen but don't let that stop you installing Windows 11 - there are lots of guides that show you how to install without hardware checks.
I've done it on an old laptop and, IMO, the most straightforward way is using Rufus
https://theideaplace.net/using-rufus-to-install-windows-11-on-unsupported-hardware/
(edited)
Archie750
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September 12th, 2025 20:23
Thanks! Two very useful-sounding tools that I've never heard of; a good enough reason not to go out and buy a newly refurbished desktop.
TPHK
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45 Posts
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September 15th, 2025 16:16
Indeed, it can be done. I successfully installed Win11 on my 3620 which is not a supported CPU. It all works fine. Updates come through, the Dell Support Assist works and with the 5070 I put in, Cyberpunk runs really well. No need to buy a new machine.
Archie750
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September 16th, 2025 07:53
@TPHK thanks for the confirmation. Did you use Flyoobe, Rufus or other software to do the install?
TPHK
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September 16th, 2025 08:16
@Archie750 I used Rufus to create a dual boot for Win 10 and 11. But before then I made the BIOS changes for the TPM and UEFI so that Win Health Check only complained about the CPU.
I also had a valid Win 10 Pro key from Dell which the Win 11 Pro seemed to automatically pick up - it must be in the firmware. Because it was dual boot I think it is a clean install of 11.
Then I used a freeware version of Aomei partition to reallocate some of the old Win10 volume to the new ones I created for 11.
Sorry I can't be more precise - I only went through the process once so don't have firm memory of how I manged to blunder through. Either I was lucky or more likely it was a real easy process that just sounds intimidating.