兩者差了 85W，如果以五年來算就差了 3723 度的電，另外再考慮 PUE 與機櫃空間租用的成本，長期應該是頗有機會換掉原來的 x86 系統。反過來看，短期有轉換測試成本以及 (可能會有的) 較高的故障率 (畢竟是白老鼠 XD)，再來是機器本身價錢差距，這些都是會想要知道的...
在 tweet 後 Matthew Prince 有回答一些問題，另外可以看到後續會有更多細節會整理出來，但感覺應該是調整的差不多決定會換過去了？這邊算是延續去年十一月「Cloudflare 測試 ARM 新的伺服器」這篇所做的事情，當時他們拿到 ARM 的工程板在測試，就已經跟 Xeon 打的差不多 (有輸有贏)，現在應該又改善更多...
看 retweet 數可以看出來大家還滿期待的，畢竟 ARM 上面的 Linux 本來就因為行動裝置很熱，現在主要還是差在有沒有穩定的伺服器可以用。
By the end of 2018, we expect that 95% of the world's population will live in a country with a Cloudflare data center, as we grow our global network to span 200 cities.
Cloudflare Workers is completely free during the open beta. We do intend on charging for Workers, but we will notify you of our plans at least thirty days before any changes are made.
Access integrates out of the box with most of the major identity providers like Google, Azure Active Directory and Okta meaning you can quickly connect your existing identity provider to Cloudflare and use the groups and users already created to gate access to your web applications.
If you want to use Access in front of an internal application but don’t want to open up that application to the whole internet, you can combine Access with Warp. Warp will make Cloudflare your application’s internet connection so you don’t even need a public IP.
費用的部分，第一個使用者免費，後續的使用者費用是 USD$3/month：
Access takes 5-10 minutes to setup and is free to try for up to one user (beyond that it’s $3 per seat per month, and you can contact sales for bulk discounts).
