Live data from Hacker News

Qwen 3.6 27B is the sweet spot for local development

quesma.com

251–260 of 809 posts

Re: Qwen 3.6 27B is the sweet spot for local development

#251

I love my MacBook Pro M5 128GB RAM and I love qwen3.6. BUT DO NOT buy this MacBook if you plan on doing serious coding using local LLMs with it. The reason is simple: your fingers will burn and your head will explode from the noise. Running any kind of sophisticated job on the very laptop you are using is just not viable. Sure you can use it in clamshell mode, but forget touching it while working with AI coding or ag…

Apple does not currently sell a Mac Mini with 64GB RAM.

Re: Qwen 3.6 27B is the sweet spot for local development

#252

Earlier quoted context omitted.

I am considering getting something like NVIDIA's RTX Spark when it comes out, though even that will be limited to 128GB.

They’ll sell you a bundle, either a pair or a quartet so you can have 256 or 512GB over a 400GB/s network link I can’t figure out when it makes sense to pay 10k up front for a quantized Llama 3.1 but it’s an interesting option

10k is rather a lot yes. For LLMs you can use a lot of tokens with 10k with less hassle without the machine (and also it's not like electricity is free), but for some other things like video models 10k would get burned very fast. I am looking for something more in the 5k range though.

Re: Qwen 3.6 27B is the sweet spot for local development

#253

Running LLMs locally for development doesn’t make sense to me. The hardware gets outdated in just a few years. Even hyperscalers replace their GPUs faster than they can buy them, plus the cost of running it locally, isn’t cheap. the cost saving just ain't there.

3090 was released six years ago and is still very relevant for running models locally.

Re: Qwen 3.6 27B is the sweet spot for local development

#254

Earlier quoted context omitted.

If you want to do coding with a local LLM your best bet is a 6 year old Nvidia 3090 which is substantially more powerful than the highest end overhyped Apple product for 1/5th the price.

That’s 24GB VRAM. Not enough to run a 27B model at a useful quant+context size.

You can run 8bit 27B models at 24GB, it's definitely enough for the model size.

Re: Qwen 3.6 27B is the sweet spot for local development

#255
Running 27B dense model on M5 128GB is ok, but one can do better.

On M5 128GB one can make use of the ram and use sparse MoE. For example, DeepSeek-V4-Flash will fit, served by DwarfStar (https://github.com/antirez/ds4). One will probably improve 2x the token/sec speed, given DS4F 13B activated params in the MoE are ~1/2 of the ~27B of the dense Qwen.

27B Of the Qwen fit even on a cheaper 24GB card, e.g. amd 7900xtx (<$1K?) or slightly dearer nvidia 3090 (with cuda). With ~900 GB/s bandwidth they will likely be ~50% faster than the M5 with 600 GB/s.

Re: Qwen 3.6 27B is the sweet spot for local development

#256

I love my MacBook Pro M5 128GB RAM and I love qwen3.6. BUT DO NOT buy this MacBook if you plan on doing serious coding using local LLMs with it. The reason is simple: your fingers will burn and your head will explode from the noise. Running any kind of sophisticated job on the very laptop you are using is just not viable. Sure you can use it in clamshell mode, but forget touching it while working with AI coding or ag…

A local model on my m2 made me come to that conclusion but I definitely was having “that config is $2k more” regret. Thanks for posting this!

Re: Qwen 3.6 27B is the sweet spot for local development

#257

Earlier quoted context omitted.

> Having a machine that can run some modest local LLMs, like the Gemma 4 12B, is really worth it. Cloud models are (much) faster, they don't consume so much power/generate heat, they have much bigger (LLM) context, they're much more precise and they have a much wider (engineering) context of the given problem. Except privacy and use cases that are blocked by cloud models (e.g. reverse engineering), local LLMs are cur…

> Cloud models […] don't consume so much power/generate heat I do realize the cloud is just someone else’s computer right? Power goes in, tokens and heat come out - just in another place

The cloud computers produce more tokens per watt. That said, if you have a computer at home running 24/7 for other reasons and you also can use it for some LLM work, why not.

Re: Qwen 3.6 27B is the sweet spot for local development

#258

I love my MacBook Pro M5 128GB RAM and I love qwen3.6. BUT DO NOT buy this MacBook if you plan on doing serious coding using local LLMs with it. The reason is simple: your fingers will burn and your head will explode from the noise. Running any kind of sophisticated job on the very laptop you are using is just not viable. Sure you can use it in clamshell mode, but forget touching it while working with AI coding or ag…

If you want to do coding with a local LLM your best bet is a 6 year old Nvidia 3090 which is substantially more powerful than the highest end overhyped Apple product for 1/5th the price.

An M1 Ultra has 800gbps unified memory. It’s nothing to do with Apple, it’s their microarchitecture. They’re just about the only game in town with high-bandwidth memory if you want >24GB (for less than $10k, anyway).

Re: Qwen 3.6 27B is the sweet spot for local development

#259

Earlier quoted context omitted.

I am considering getting something like NVIDIA's RTX Spark when it comes out, though even that will be limited to 128GB.

It's out, I'm daily driving one. It's great

Are you running a local LLM on it? Did you buy a whole laptop?

Re: Qwen 3.6 27B is the sweet spot for local development

#260
post #51

> ... on my Macbook Max M5 128 GB Local development for who ? How many of y'all are rocking 128GB of memory? Am I reading Apple's site correctly that it's a $10,000 laptop?

A 27B model can fit easily on a 32GB VRAM card (e.g. 5090) or a 32GB computer in RAM at FP8/Q8 (unsloth have 28.6GB Q8 files). For 24GB VRAM cards (e.g. 4090) you can use Q6_K (22.5GB) or Q5_K_M (19.5GB) quants, possibly offloading some of the weights to RAM.

For the 35B model, ofloading to RAM doesn't slow it down much. If you have a nice CPU and a weak GPU, it will be fast enough to use.
Post reply on HN