I'm not sure where you're coming from with this initial argument, but the X99/C612 platform is not just one or two, but it is
several generations old. Even though they remain useful to some people in a small scale, and cherished, perhaps coveted by people like us, they are very much obsolete
in their intended markets, that is, as scalable datacenter processors.
We know where most of these Xeons are coming from, and that's from cloud hosting and render farms and/or their suppliers. These companies have green goals to meet, which require high server density which these platforms cannot offer as they have limited scalability. So yes, they're "surplus" because they're e-waste otherwise. Using outdated technology such as this flies in front of energy policy and real estate management, which is why practically all big companies invest heavily in renewing their platforms every generation or two. At least three such cycles have been completed since this platform.
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Sapphire Rapids is launching this quarter, and Emerald Rapids (the "next-gen" in this 2019 roadmap) will follow soon in H2 2023. So you shouldn't be surprised to see any stocks of Broadwell-EP chips being offloaded on eBay, they've long since been replaced.
On the subject of performance, I must disagree, they are no longer high performance parts if a 18-core flagship processor such as my 4669 v3 is not capable of outpacing a common desktop processor like the Ryzen 5 5600 (non-X) even on multithreaded workloads such as Cinebench that heavily favor multicore processors. Not to mention that support for these has been dropped altogether in modern operating systems. Which isn't a deal breaker to us, but it very much is for someone who needs support for business reasons.
On gaming, I must also disagree. Your W3680 is miserably obsolete, it cannot boot many newer engines due to the lack of AVX support and the performance is... bro, dude, you're on TPU, i'm sure you read a review on a lousy i3 and compared to your own experience. It's a rebranded Core i7-980X, and while I enjoyed having my -990X 11 years ago, its time has very long since come and gone. Their performance borders on the irrelevant when bringing up gaming PCs in a modern context, you're going to get a LOT more out of even a lousy i3-10100F.
I think this last one applies to you, not me. These processors are old technology, and the one thing we will agree on, is that i'm glad that they have found a way to us instead of simply being destroyed. Newer server chips will not be so fortunate, as both the latest Xeon and EPYC CPUs now have security locks through eFuse that only let them work in conjunction with their intended platforms, locked by brand and possibly even motherboard type. For example:
Lenovo is vendor-locking its AMD Ryzen based platforms with AMD PSB including its Ryzen Pro ThinkCentre Tiny platforms
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