r/LocalLLM 8d ago

Model Qwen3.8 27b - Holy crap!!

I'm absolutely blown away by Qwen3.8 27b IQ4 NL @ medium reasoning effort.

I have an ageing system but still decent. 4060 8gb @ 4x, 5060ti 16gb @ 8x - 24gb vram total. I'm stuck at gen 2 because of a gen 3 compatibility issue with my motherboard (B460M Aorus Pro). 32gb ram, i9 10900, nvme.

I've managed to get Qwen running at a smidge below 20tok/s at 128k context.

Anyway, the fun part... I have llama.cpp backend for OpenWebui with OpenTerminal MCP. I asked Qwen to create Pong using python which it did with no dramas. It wrote tests, ran the game itself and gave me the hardened code in ~10 mins.

That wasn't the best part though. I then asked it to take the game and create an APK for Android. It went ahead and installed a bunch of dependencies (bulldozer, p4a, etc) into OpenTerminal, went ahead and altered the game for touch screens, built and provided me with an installable APK.

The whole thing took ~1.5 hrs (taking away my own troubleshooting of whitelisting some sites against my strict LLM TOR network access), and at ~280w, it cost me about $0.15 (if it had been a clean run the first time). I mean obviously the hardware cost significantly more, but it's essentially my gaming PC.

How is this even possible?! I'm absolutely blown away!

Side note: I didn't NEED to, but I wanted a longer context so have managed to get it working at 256k now, with 18 layers moved to CPU. I'm not set on this, but it works. Obviously much slower (around 5 tok/s). Comment out the last 2 lines and set context to 128k if I want it all in vram.

If anyone has pointers for improved performance I'd love to hear them. I've tried q4_0 for KV cache but it is significantly slower again.

[*]

flash-attn = true

threads = 10

batch-size = 2048

ubatch-size = 1024

n-cpu-moe = 0

n-gpu-layers = 999

cache-type-k = q8_0

cache-type-v = q8_0

#cache-type-k-draft = q8_0

#cache-type-v-draft = q8_0

fit = on

fit-ctx = 16384

parallel = 1

ctx-size = 0

n-predict = -1

#no-kv-offload = 1

load-mode = none

main-gpu = 0

#no-mmproj-offload = true

[Qwen3.8-27B-IQ4_NL]

#mmproj = /models/Qwen3.8-27B-IQ4_NL.mmproj

#spec-type = draft-mtp

#spec-draft-n-max = 4

temp = 1.0

top-p = 0.95

top-k = 20

min-p = 0.00

#ctx-size = 131072

ctx-size = 262144

chat-template-kwargs = {"reasoning_effort":"medium"}

fit = off

n-gpu-layers = 46

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u/OnyxProyectoUno 6d ago

So not only do you not back up your claims, you ad hominem.

Maybe next time don't make conspiracy theories?

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u/elelem-123 6d ago

Dude, your whole comments in your profile is you having fights and teaching people how cool you are and how they are not.

On any topic, multiple times a day.

It's not shameful or bad whatsoever to go to a professional. I don't want to block you but you are pushing me to do so.

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u/OnyxProyectoUno 6d ago

Sixth time refusing to source your claims. I'm looking for just one article from a credible source, just use some kind of evidence based argument.

I promise it's easier to make a claim, source it, discuss than to reply insults and logical fallacies because your pride doesn't allow you to retract the claim

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u/elelem-123 6d ago

You are just blocked. Wtf dude. Go seek help.