My 775 system works perfectly fine with WIN11 but I'm in the process of trying to get 24H2 to install with minimal success but I'm not giving up
Fool's errand. It's physically impossible to execute these instructions on both Conroe and Wolfdale.
It killed me that they replaced my 5 year old iMac at work because it no longer supported the latest Mac OS
I used to be a Mac fan but jumped ship when they started gluing things shut.
Is it really 5 years old? I specifically mentioned macOS High Sierra earlier because it is the latest that my Core 2 Duo Mac mini supports (it's a mid-2010 model), and High Sierra is 2018's annual release. The 2018-2019 Macs are the last with Intel processors and they run both Monterey and Sonoma natively. That's eight years, and by then, a laptop Penryn processor with an integrated GPU that's functionally equivalent to a GT 220 sans dedicated memory was already an ancient relic.
Even the first LTSB version from 2015 still receives security updates up to the same day as the last mainstream version of Win10 (22H2). And the newest IoT LTSC 2021 will receive security updates up to 2032. I doubt Chromium will drop support anytime soon considering how many still use Win10 and can't even "upgrade" to Win11 due to the high system requirements (Intel 8th gen or AMD Zen+).
Microsoft will also sell Extended Security Updates to regular customers up to October 2028, though that's quite expensive.
macOS has never had anywhere near as long support as Windows
Keyword security. It's completely incompatible with newer hardware, try to install even the 2016 LTSB onto a now ~4 year old Zen 3/Ampere previous-generation system, and you won't be able to. Drivers were never developed for those versions, the kernel is incompatible with the newer drivers that support this hardware. This has always been the problem with LTS versions of Windows 10. They are completely lacking forward-compatibility, which means you'll have a hard time replacing your hardware in case of failure.
This is the 2nd time in a week I've read anything about SSE4.2 and I don't understand the issue.
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Anything 15+ years ago is out of the loop and GOOD.
Anything made within the past 10, YOU GOOD.
That Core 2 Quad Q9550 is older than my Athlon and feature locked. Win11 is just not meant to be.
That 65 nm Athlon is a K8 architecture processor. Despite being a newer revision, its foundation goes back to 2003. It's understandable that it doesn't support modern instructions whatsoever, an excuse that the AMD K10 architecture used on Phenom and Phenom II doesn't have. K10 dates from 2007 and only has Intel-compatible SSE2. The higher versions of SSE are often conditional or AMD-specific, in particular SSE4A. Interestingly, I believe it supports POPCNT, one of the instructions that this new build of Windows demands. But like I said, support was incomplete and/or conditional for many instructions on AMD processors during this time frame.
This architecture also does not support Supplemental SSE3 (SSSE3 with 3 S's), which are the "Conroe New Instructions", introduced with 65 nm Core 2. The 45 nm refresh of Core 2 added SSE4.1, and 4.2 was added with Nehalem (1st generation Core i7) in 2008. By the time Phenom II X6 (Thuban and the cutdown Zosma X4) launched, AMD had a slow and dated processor that couldn't hope to compete with Sandy Bridge, and they were also at a severe disadvantage in instruction set support, and this mostly reflected in video encoders which are very SIMD-heavy. This was known even in the earliest days to be a problem, look at the video encoding performance discrepancy between Kentsfield and Yorkfield:
www.anandtech.com
Compatibility-wise, it didn't matter too much as most software still supported older machines at the time, but later on it caused severe issues with many games flat out refusing to run on Phenom due to its lack of support for the instructions, not that such pitifully weak processor would ever achieve an acceptable experience regardless... but gamers like their slop, what can I say.
Anyhow, this turned around with Bulldozer, despite its weak performance, Bulldozer had a comprehensive (at the time) instruction set, closing the gap with Sandy Bridge (including AVX) and it even supports F16C, which was only added with Ivy Bridge (the 2012 3rd gen Core CPUs), and a tradition that continued with Ryzen, AMD's got the best instruction set support in Zen 4 currently. Notably, F16C instruction set is demanded by some of the very latest PC games (such as Horizon Forbidden West), which doesn't run on the i7-2600K but will run (read: run, don't expect it to be playable) on an FX-8150, requiring the i7-3770K on the Intel side to even boot.
In general, Haswell has become the bare minimum nowadays: 256-bit AVX2, F16C, POPCNT and all the rest. It's not an unreasonable request, these 4th Gen Intel chips are now eleven years old. Think back when Windows 7 came out in 2009, an 11 year old PC would mean a machine from 1998, and those would barely run Windows 2000 well. You needed to disable some of the visual enhancements in XP just to get your ATI Mach64 with 2 MB to output anything correctly, so I'd say we've come a long way, no?