What hardware do you need to run Qwen3.8 27B?

Qwen3.8 27B at Q4_K_M is 16 GB of weights, with a context ceiling of 256k tokens. On the cheapest machine that runs it, a Framework Desktop, 32GB, it generates 10 tok/s at 32k of context, worked out from memory bandwidth.

How good is Qwen3.8 27B, really?

On the Artificial Analysis Intelligence Index v4.3 it scores 34 (xhigh reasoning effort; 22 without reasoning), which puts it in the Sonnet-class band. In the same league as the labs' mainstream models on this index. See the whole table.

Head to head with its neighbours on the leaderboard: vs DeepSeek V4-Flash above it, vs Beam 1.0 501B-A23B below. Also head to head: vs Qwen3 32B, the last-generation Qwen nearest it in size. One more model needs much the same memory at 32k of context: vs Muse Glimmer 30B.

What Qwen3.8 27B costs either way

Renting the same model costs $0.039 per million input tokens and $1.25 per million output (OpenRouter, cheapest active endpoint, checked 2026-10-29). Buying a machine only beats that if you use it hard enough, for long enough, that the hardware price divides down below the rental bill. What a million tokens costs each way puts the two prices side by side.

Machines that run Qwen3.8 27B

Every machine here runs it, but not to the same length. The Strix Halo Framework Desktop, 32GB stops at 64k; the DGX Spark GB10 Grace Blackwell, 128GB takes it to 256k, which is this model's own ceiling and the longest the calculator offers. The weights are the same size on every machine; what differs is the memory left for the key-value cache, which grows with every token you keep.

The table is the cheapest machine in each family, not the only one that runs it: 44 of the 56 machines on this site hold it at 32k. Within a family only memory decides, so that is every Mac Studio and Strix Halo box at any size, every NVIDIA card with 24GB or more, every Mac mini and MacBook Pro with 32GB or more, the Radeon AI PRO R9700, 32GB and the DGX Spark, 128GB. One table sets every machine against the others: price, the memory its GPU can use, what it holds and how long it takes to pay for itself.

One machine per family, cheapest first. Speeds are measured where a public benchmark exists and estimated from memory bandwidth otherwise; the calculator says which for any configuration. The longest context is the longest setting the calculator offers that the machine still holds this model at, cache included, and no machine is shown taking it past its own 256k limit. Each one opens the calculator on that machine at that length.

For scale, the calculator starts from 80 tok/s for a hosted API and times a local machine against it. Nothing above reaches it, and the quickest is 66 tok/s.

The cheapest machine that runs it is sold with 32 GB. There is a page on what 32 GB runs, machine by machine: it names the 6 machines here sold at that size, and the 32 current models the roomiest of them holds at 32k, this one among them.

It fits in less memory than that: the smallest size here that runs it at 32k is 24 GB, on the GeForce RTX 3090, 24GB at $1,499, card only, which hands a model 23 GB and is no longer sold.

Run Qwen3.8 27B at 256k on the DGX Spark GB10 Grace Blackwell, 128GB

How much memory does Qwen3.8 27B need at 256k?

Every figure above is priced at 32k of context. At 256k, which is this model's own ceiling and the longest the calculator offers, Qwen3.8 27B needs 33.6 GB rather than 18.6 GB. The weights are the same either way; the key-value cache goes from 2.1 GB to 17.2 GB.

30 of the 37 machines here still sold at a published price hold Qwen3.8 27B at 32k and 24 hold it at 256k. The cheapest still sold goes from the Framework Desktop, 32GB at $1,269 to the Corsair AI Workstation 300, 64GB at $1,700.

On the Corsair AI Workstation 300, 64GB it runs 10 tok/s estimated at 32k and 5.7 tok/s estimated at 256k. Every token generated reads the whole cache back, so a longer window is slower as well as bigger.

The specifics

Parameters

27.8B

Quantisation

Q4_K_M

Weights on disk

16 GB

KV cache

2.1 GB at 32k context — Hybrid: 48 linear-attention layers; only 16 full-attention layers hold a growing KV cache. How weights and cache add up.

Maximum context

256k tokens (up to 1M with YaRN)

Licence

Apache 2.0

Sources

unsloth/Qwen3.8-27B-GGUF, Qwen/Qwen3.8-27B