Top all-time · #25586
Meg McNulty
Personal blog · ciphertalk.substack.comaibusinesshardware
Meg McNulty writes CipherTalk, a personal blog at ciphertalk.substack.com about ai, business and hardware. Since 2025, 3 different Hacker News readers have linked it 3 times, most often “Nobody knows what a used GPU cluster is worth”. It is still writing: the last post was on 2026-10-14, and you can follow it by feed.
Too few sampled comments (2) to say how often HN recommends it.?
Why HN links it
HN readers link this Substack for deep tech and market trends writing. One commenter calls themselves a fan of it, and another cites it as an example of a related discussion.
Summarised by Claude from a sample of 2 HN comments that link here. Each comment is marked recommending, critical or neutral (citing without judging); how this works.
Decoding deeptech's biggest trends.
Most-linked posts?
- Nobody knows what a used GPU cluster is worth2 people · 2 mentions · first linked 2026-07-15
What Hacker News says?
There was an excellent article about AI DC value and depreciation yesterday [1] (discussion [2]). The effective life of GPUs in paticular is a huge unknown. One of my big questions has always been "what will happen to existing GPUs when new GPUs come out?" My guess is that the life of these things isn't as long as the depreciation schedules for some of these companies would have you believe. IIRC Meta was using an 8…
Comment linking /p/nobody-knows-what-a-used-gpu-cluster
on “Alphabet's cash burn raises alarm for Big Tech as AI spending climbs”Submitted Nobody knows what a used GPU cluster is worth as a story · 1 points
HN discussionbig fan of ciphertalk on substack. mostly deeptehc and market trends stuff - https://ciphertalk.substack.com/
Comment linking /
on “Ask HN: What newsletters do you follow?”