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This is the best summary I could come up with:
Two years ago Cloudflare rolled out their "Gen 11" server fleet built around AMD EPYC Milan processors and on Friday the company began talking about their forthcoming "Gen 12" server designs that will soon be rolling out across their data centers for powering this widely-used web infrastructure.
Cloudflare's blog is often home to a lot of interesting technical insight from this leading web company.
Cloudflare hasn't yet publicly said whether they are using 4th Gen Intel Xeon Scalable or AMD Zen 4 (Genoa/Genoa-X or Bergamo), but in Friday's blog post they noted that with their Cloudflare services they have noted scaling up to 128 cores / 256 threads.
Switching to a 2U form factor also gives us the benefit of fully utilizing our rack power budget and our rack space, and provides ample room for the addition of PCIe attached accelerators / GPUs, including dual-slot form factor options.
It might seem counter-intuitive, but our observations indicate that growing the server chassis, and utilizing more space per node actually increases rack density and improves overall TCO benefit over previous generation deployments, since it allows for a better thermal design.
We are very happy with the result of this technical readiness investigation, and are actively working on validating our Gen 12 Compute servers and launching them into production soon.
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