Nvidia Blackwell Ultra (GB300): -97% INT8/FP64,+50% FP4 Dense,+55% VRAM,+114% At

Comments (2)

nabla9 · 3m ago

96% TCO and energy savings for 65 racks eight-way HGX H100 air-cooled versus 1 rack GB200 NLV72 liquid-cooled with equivalent performance on GPT-MoE-1.8T real-time inference throughput.

Big if true.

Sweepi · 22m ago

[+114% Attention acceleration] Any idea how they got +50% FP4 from the same silicon? "Firmware" improvements? Or did they found a way to disable the INT8 and FP64 units and re-use them e.g. as overspill registers? Any other ideas why INT8/FP64 is down -97% on the same chip? QA/certification issues?

In case you you want to compare the complete specs, I would post them here, but since hn supports less formatting than early 2000s bb-forums, check it here: https://www.forum-3dcenter.org/vbulletin/showpost.php?p=1380...

Ask HN: Why hasn't x86 caught up with Apple M series?

Anthropick.com Redirects to ChatGPT

Ask HN: How can I recover and run my old mobile game from the 2010s?

Ask HN: Did modern AI's coding abilities make you lose interest in programming?

Ask HN: GitHub Copilot down?

Tell HN: any reasonably used DB will likely outlast the programs using it

Ask HN: How to Learn to Build Agentic AI Systems (Like Claude Code)

Ask HN: What are the best Google alternatives in 2025?

Ask HN: What measures are you taking to stop AI crawlers?

Ask HN: Is backlink trading still a problem worth solving?

Ask HN: What to Do with Old iPads?

Units of Economics of LLMs. Reply to Ed Zitron's "AI Is a Money Trap"

Ask HN: Does sentience put stress on the brain?

Ask HN: Is there a temp phone number like temp email?

Out of curiosity: what kind of people use this "forum" (I mean Hacker News)?

Ask HN: Why are so many services rejecting Google Voice numbers for signups?

Ask HN: What should I use to run React Native tests on a device?

Ask HN: Best codebases to study to learn software design?

Stop squashing your commits. You're squashing your AI too

Ask HN: Any experienced devs who use AI extensively in their work?

Ask HN: Are AI filters becoming stricter than society itself?

Why is AI search still bad at trust and context?

Ask HN: How are you attributing your AI usage when developing software?

Patient Lisp Hacker Seeks Same for Long Walks Through IPL-V Code

Ask HN: Has anyone else used online communities that are archetypically "savvy"?

High rate of LLM (GPT5) hallucinations in dense stats domains (cricket)

Ask HN: I just abandoned my PyCharm subscription, what should I use now?

Ask HN: What are you working on (August 2025)?

429 Too Many Requests from registry.npmjs.org

Ask HN: Why can't ChatGPT count to a million?

Ask HN: How do you find early stage startups to join

How can a mutex in Wine be faster than a native one on Linux

Ask HN: What is wrong with modern software development

Ask HN: Recommandation for an Ergonomic Keyboard?

Ask HN: Someone has committed 20K+ LoC to a PR, exhausting my CI & AI workflows

Ask HN: Best Marketplaces for Used Servers?

Ask HN: Does using public transportation make you more creative than driving?

Problem with Payment Gateways

Ask HN: How can I trace what user queries make AI bots crawl my site?

ASK HN: AI in high school. Will teachers and schools have to compensate?

Ask HN: What is your source for answers?

Ask HN: Devices to allow children to listen to podcasts on my local network?

DSPy GEPA Example: Listwise Reranker

Ask HN: Why do people hate on Sabine Hossenfelder so much?

Ask HN: What is the biggest problem LLMs solved in your life/work?

Nvidia Blackwell Ultra (GB300): -97% INT8/FP64,+50% FP4 Dense,+55% VRAM,+114% At

Comments (2)