Software Engineer Runs Generative AI on 20-Year-Old PowerBook G4 - MacRumorsOpen MenuShow RoundupsShow Forums menuVisit ForumsOpen Sidebar
Skip to Content

Software Engineer Runs Generative AI on 20-Year-Old PowerBook G4

In a blog post this week, software engineer Andrew Rossignol (my brother!) detailed how he managed to run generative AI on an old PowerBook G4.

PowerBook G4 LLM
While hardware requirements for large language models (LLMs) are typically high, this particular PowerBook G4 model from 2005 is equipped with a mere 1.5GHz PowerPC G4 processor and 1GB of RAM. Despite this 20-year-old hardware, my brother was able to achieve inference with Meta's LLM model Llama 2 on the laptop.

The experiment involved porting the open-source llama2.c project, and then accelerating performance with a PowerPC vector extension called AltiVec.

His full blog post offers more technical details about the project.

Similar examples of generative AI models running on the PlayStation 3, Xbox 360, and other old devices have surfaced in the news from time to time.

Popular Stories

Apple Event Logo

Apple Working on All-New Operating System

Wednesday July 29, 2026 11:39 am PDT by
Apple is developing an all-new operating system that is essentially a mix of tvOS, watchOS, and iOS, according to Bloomberg's Mark Gurman. In a report this week, he said the operating system will feature a grid of icons, widgets, and apps, along with customizable clock faces. The new software platform is intended for Apple's long-rumored smart home hub. With built-in facial recognition,...
imac video apple feature

Apple Made Its Second-Biggest Acquisition Ever This Year

Wednesday July 29, 2026 12:03 pm PDT by
Apple this year acquired Israeli startup Q.ai for close to $2 billion, according to the Financial Times. That would make this Apple's second-biggest acquisition ever, after it paid $3 billion for the popular headphone maker Beats in 2014. This is also the largest known Apple acquisition since the company purchased Intel's smartphone modem business and patents for $1 billion in 2019. Q.ai...
Dynamic Island iPhone 18 Pro Feature

iPhone 18 Pro: Twelve Changes Coming to Apple's Next Flagship

Thursday July 30, 2026 3:43 am PDT by
We're less than two months out from the launch of Apple's premium next-generation smartphone lineup, and while we're not expecting a dramatic change in terms of functionality, there are still several enhancements rumored to be coming to the iPhone 18 Pro and iPhone 18 Pro Max. One thing worth noting is that Apple is reportedly planning a major change to its iPhone release cycle this year,...

Top Rated Comments

sw1tcher Avatar
18 months ago

Properly optimized.... that's the ticket! So many people have demanded that Apple add in tons of RAM, but in doing so, developers get lazy and don't optimize, and then tons of RAM still isn't enough over time. I've appreciated Apple's conservative approach to RAM over the years, as it's forced optimizations, which is critical to software being great.
You've just given Apple a reason to reduce the Mac's standard memory from 16GB to 4GB.

Apple: "If gen AI can run on 1GB memory, image what it can do with 4GB memory (which is analogous to 8GB)!"
Score: 33 Votes (Like | Disagree)
18 months ago

Wow! That's impressive! I'm not a developer so don't really understand the specifics but it shows that there is still a lot of headroom with current tech if properly optimized!
Properly optimized.... that's the ticket! So many people have demanded that Apple add in tons of RAM, but in doing so, developers get lazy and don't optimize, and then tons of RAM still isn't enough over time. I've appreciated Apple's conservative approach to RAM over the years, as it's forced optimizations, which is critical to software being great.
Score: 31 Votes (Like | Disagree)
JTK Awesome Avatar
18 months ago

If you run Linux Mint on an old Mac, you really notice that macOS is actually quite bloated. They could have made the OS a lot lighter than they did.
MacOS, as well as iOS and iPadOS, are long overdue for a Snow Leopard-like update: 0 new features, just squash bugs and reduce system resources.
Score: 27 Votes (Like | Disagree)
stiligFox Avatar
18 months ago
Oh that's so cool!! I love PowerPC machines still. I have my PowerBook G3 Pismo still kicking around. I'll occasionally use it for writing projects or reminiscing about simpler times. Neat to see they're still keeping up with the latest trends *cough* ᶠᵃᵈˢ *cough*
Score: 21 Votes (Like | Disagree)
18 months ago

Properly optimized.... that's the ticket! So many people have demanded that Apple add in tons of RAM, but in doing so, developers get lazy and don't optimize, and then tons of RAM still isn't enough over time. I've appreciated Apple's conservative approach to RAM over the years, as it's forced optimizations, which is critical to software being great.
If you run Linux Mint on an old Mac, you really notice that macOS is actually quite bloated. They could have made the OS a lot lighter than they did.
Score: 14 Votes (Like | Disagree)
18 months ago
Quick someone show Tim Cool or is he too busy filming himself jumping out of an airplane for the next keynote?
Score: 12 Votes (Like | Disagree)

🔗 Related Apple News & Rumors

Stay updated with the latest Apple ecosystem news and verified rumors