Qwen3.5-27B hardware requirements
Fits on one Instinct MI355X OAM at BF16. For 1,000 tokens/s at 32k context you need 6 x H100 SXM5 80GB at $10.98/hr or 12 x RTX PRO 6000 Blackwell Max-Q Workstation Edition at $6.00/hr.
Top options for Qwen3.5-27B
The strongest part each vendor offers for Qwen3.5-27B at BF16 with 32,768 tokens per user, rentable parts first. Each card is one replica, the fewest accelerators that hold the model, and the line it draws on the graph below. Select a card to plot it.
Tokens per second as users grow
Each line is one replica, the fewest accelerators that hold the model, serving more users at once. It climbs while memory bandwidth is the limit, flattens once compute is, and stops where memory runs out at 32,768 tokens per user. Hover a line to bring it forward.
1 x GB300 NVL72 GPU 288GB: peaks at 607 tokens per second when memory fills at 96 users.1 x Instinct MI355X OAM: peaks at 610 tokens per second when memory fills at 96 users.1 x Ascend 910C: peaks at 185 tokens per second when memory fills at 29 users.1 x Gaudi 2 96GB: peaks at 99.8 tokens per second when memory fills at 15 users.1 x TPU v7 192GB: peaks at 538 tokens per second when memory fills at 56 users.2 x Inferentia2: peaks at 17.4 tokens per second when memory fills at 1 users.
Memory fills at: 1 x GB300 NVL72 GPU 288GB 96 users, 1 x Instinct MI355X OAM 96 users, 1 x Ascend 910C 29 users, 1 x Gaudi 2 96GB 15 users, 1 x TPU v7 192GB 56 users, 2 x Inferentia2 1 users. Roofline estimates at BF16.
Bare minimum
- Tokens/s
- 106
- Per hour
- $5.99
- Per million tokens
- $15.74
- Memory used
- 20%
- Tokens/s
- 23.6
- Per hour
- $0.50
- Per million tokens
- $5.89
- Memory used
- 61%
- Tokens/s
- 197
- Per hour
- $1.00
- Per million tokens
- $1.41
- Memory used
- 70%
Configurations
Every datacenter GPU in the catalog, sized for these settings. Change precision, context and concurrency and the whole page follows. Each point is one replica: the smallest tensor-parallel group of that GPU that holds the model.
1 x Instinct MI355X OAM: 546 tokens/s per replica at $5.99/hr.1 x GB300 NVL72 GPU 288GB: 544 tokens/s per replica at $12.42/hr.1 x GB200 NVL72 GPU 186GB: 544 tokens/s per replica at $10.50/hr.1 x Instinct MI350X OAM: 517 tokens/s per replica at $6.16/hr.1 x B300 SXM 262GB: 508 tokens/s per replica at $4.99/hr.1 x B200 SXM 180GB: 501 tokens/s per replica at $4.09/hr.1 x Instinct MI325X OAM: 320 tokens/s per replica at $3.80/hr.1 x Instinct MI300X 192GB: 308 tokens/s per replica at $2.39/hr.1 x H200 SXM 141GB: 246 tokens/s per replica at $2.48/hr.2 x H100 SXM5 80GB: 417 tokens/s per replica at $3.66/hr.1 x H200 NVL 141GB: 217 tokens/s per replica at $3.61/hr.2 x H100 NVL 94GB: 390 tokens/s per replica at $6.38/hr.2 x H100 PCIe 80GB: 290 tokens/s per replica at $5.00/hr.2 x RTX PRO 6000 Blackwell Workstation Edition: 216 tokens/s per replica at $3.60/hr.2 x RTX PRO 6000 Blackwell Server Edition: 206 tokens/s per replica at $1.38/hr.2 x RTX PRO 6000 Blackwell Max-Q Workstation Edition: 197 tokens/s per replica at $1.00/hr.2 x Gaudi 2 96GB: 212 tokens/s per replica at $2.20/hr.8 x GeForce RTX 5090 32GB: 402 tokens/s per replica at $9.52/hr.4 x RTX 6000 Ada 48GB: 264 tokens/s per replica at $3.88/hr.4 x L40S 48GB: 252 tokens/s per replica at $3.04/hr.2 x A100 PCIe 80GB: 157 tokens/s per replica at $2.70/hr.2 x A100 SXM4 80GB: 158 tokens/s per replica at $2.80/hr.4 x A100 SXM4 40GB: 281 tokens/s per replica at $6.24/hr.8 x RTX 5000 Ada 32GB: 332 tokens/s per replica at $6.64/hr.4 x RTX PRO 5000 Blackwell 48GB: 235 tokens/s per replica at $3.84/hr.8 x RTX PRO 4500 Blackwell 32GB: 334 tokens/s per replica at $5.76/hr.4 x L40 48GB: 161 tokens/s per replica at $3.28/hr.8 x GeForce RTX 4090 24GB: 296 tokens/s per replica at $7.12/hr.4 x RTX A6000 48GB: 139 tokens/s per replica at $2.00/hr.4 x A40 48GB: 132 tokens/s per replica at $2.36/hr.8 x RTX PRO 4000 Blackwell 24GB: 244 tokens/s per replica at $4.56/hr.8 x V100S PCIe 32GB: 250 tokens/s per replica at $7.04/hr.8 x A10 24GB: 211 tokens/s per replica at $8.81/hr.8 x L4 24GB: 162 tokens/s per replica at $4.72/hr.8 x GeForce RTX 3090 24GB: 145 tokens/s per replica at $4.00/hr.8 x A10G 24GB: 134 tokens/s per replica at $8.05/hr.8 x GeForce RTX 3090 Ti 24GB: 86.9 tokens/s per replica at $3.68/hr.8 x RTX A5000 24GB: 60.7 tokens/s per replica at $2.16/hr.
Priced configurations only; 67 more fit without a live price and appear in the table. Marker size grows with the tensor-parallel width. Roofline estimates.
| Rent | |||
|---|---|---|---|
| 1 | 1.2k tok/s | Specs → | |
| 1 | 1.0k tok/s | Specs → | |
TPU 8t announced | 1 | ~571 tok/s | Specs → |
TPU 8i announced | 1 | ~562 tok/s | Specs → |
| 1 | 546 tok/s | Rent → | |
| 1 | 544 tok/s | Rent → | |
| 1 | 544 tok/s | Rent → | |
| 1 | 517 tok/s | Rent → | |
| 1 | 502 tok/s | Specs → | |
Instinct MI430X OAM announced | 1 | ~667 tok/s | Specs → |
| 1 | 508 tok/s | Rent → | |
| 1 | 501 tok/s | Rent → | |
| 1 | 546 tok/s | Specs → | |
| 1 | 427 tok/s | Specs → | |
| 1 | ~484 tok/s | Specs → | |
| 1 | 320 tok/s | Rent → | |
| 1 | 308 tok/s | Rent → | |
| 4 | 580 tok/s | Specs → | |
| 1 | 288 tok/s | Specs → | |
| 1 | 246 tok/s | Rent → | |
| 2 | 417 tok/s | Rent → | |
| 8 | 1.1k tok/s | Specs → | |
| 2 | 371 tok/s | Specs → | |
| 1 | ~217 tok/s | Rent → | |
| 2 | ~390 tok/s | Rent → | |
| 2 | 357 tok/s | Specs → | |
| 2 | 290 tok/s | Rent → | |
| 2 | 290 tok/s | Specs → | |
| 1 | 150 tok/s | Specs → | |
| 2 | 216 tok/s | Rent → | |
| 2 | 207 tok/s | Specs → | |
| 2 | ~207 tok/s | Specs → | |
| 2 | 206 tok/s | Rent → | |
| 2 | 595 tok/s | Specs → | |
| 2 | 229 tok/s | Specs → | |
| 2 | 197 tok/s | Rent → | |
| 2 | ~115 tok/s | Specs → | |
| 2 | 212 tok/s | Rent → | |
| 2 | 177 tok/s | Specs → | |
| 4 | 318 tok/s | Specs → | |
| 8 | 402 tok/s | Rent → | |
| 4 | 338 tok/s | Specs → | |
| 2 | 205 tok/s | Specs → | |
| 4 | ~264 tok/s | Rent → | |
| 2 | 196 tok/s | Specs → | |
| 4 | 252 tok/s | Rent → | |
| 2 | 157 tok/s | Specs → | |
| 2 | 158 tok/s | Specs → | |
| 2 | 157 tok/s | Rent → | |
| 2 | 158 tok/s | Rent → | |
| 4 | 281 tok/s | Specs → | |
| 4 | 281 tok/s | Rent → | |
| 8 | ~492 tok/s | Specs → | |
| 4 | ~223 tok/s | Specs → | |
| 8 | 451 tok/s | Specs → | |
| 8 | ~332 tok/s | Rent → | |
| 4 | ~235 tok/s | Rent → | |
| 2 | ~124 tok/s | Specs → | |
| 8 | 322 tok/s | Specs → | |
| 8 | 334 tok/s | Rent → | |
| 8 | 287 tok/s | Specs → | |
| 8 | 310 tok/s | Specs → | |
| 8 | 310 tok/s | Specs → | |
| 8 | 189 tok/s | Specs → | |
| 8 | ~275 tok/s | Specs → | |
| 4 | 161 tok/s | Rent → | |
| 4 | 186 tok/s | Specs → | |
| 8 | 296 tok/s | Rent → | |
| 8 | 290 tok/s | Specs → | |
| 8 | ~220 tok/s | Specs → | |
| 4 | 139 tok/s | Rent → | |
| 4 | 132 tok/s | Rent → | |
| 1 | 47.5 tok/s | Specs → | |
| 2 | 90.2 tok/s | Specs → | |
| 8 | ~244 tok/s | Rent → | |
| 8 | 280 tok/s | Specs → | |
| 4 | 106 tok/s | Specs → | |
| 2 | 55.8 tok/s | Specs → | |
| 8 | ~240 tok/s | Specs → | |
| 8 | 215 tok/s | Specs → | |
| 8 | 250 tok/s | Rent → | |
| 4 | 128 tok/s | Specs → | |
| 8 | 211 tok/s | Rent → | |
| 4 | 120 tok/s | Specs → | |
| 4 | 120 tok/s | Specs → | |
| 8 | 232 tok/s | Specs → | |
| 8 | 162 tok/s | Rent → | |
| 4 | 118 tok/s | Specs → | |
| 8 | 180 tok/s | Specs → | |
| 8 | ~177 tok/s | Specs → | |
| 8 | ~164 tok/s | Specs → | |
| 8 | 141 tok/s | Specs → | |
| 8 | ~159 tok/s | Specs → | |
| 4 | 92.0 tok/s | Specs → | |
| 4 | 93.5 tok/s | Specs → | |
| 8 | 163 tok/s | Specs → | |
| 8 | 145 tok/s | Rent → | |
| 8 | 134 tok/s | Rent → | |
| 4 | 53.0 tok/s | Specs → | |
| 8 | 100 tok/s | Specs → | |
| 8 | 80.4 tok/s | Specs → | |
| 8 | 86.9 tok/s | Rent → | |
| 8 | 73.7 tok/s | Specs → | |
| 8 | 60.7 tok/s | Rent → | |
| 8 | 57.9 tok/s | Specs → |
By vendor
At BF16 the NVIDIA pick is 2 x RTX PRO 6000 Blackwell Max-Q Workstation Edition at about 197 tokens/s for $1.00/hr; the AMD pick is 1 x Instinct MI300X 192GB at about 308 tokens/s for $2.39/hr. Per rental dollar NVIDIA delivers 1.53x the tokens of AMD here.
NVIDIA: 197 tokens/s per dollar, 328 tokens/s per kW (2 x RTX PRO 6000 Blackwell Max-Q Workstation Edition).AMD: 129 tokens/s per dollar, 411 tokens/s per kW (1 x Instinct MI300X 192GB).Huawei: no live price, no power figure (1 x Ascend 950DT).Intel: 96.5 tokens/s per dollar, 177 tokens/s per kW (2 x Gaudi 2 96GB).Google: no live price, no power figure (1 x TPU v7 192GB).AWS: no live price, no power figure (8 x Inferentia2).Other: no live price, no power figure (2 x MTT S5000).
Fleet what-if
Compare whole fleets at these settings: a thousand of one part against a hundred of another. Each fleet splits into replicas of its tensor-parallel width; GPUs left over sit idle.
| Fleet | Tokens/s |
|---|---|
1,000 x H200 SXM 141GB | 246k tok/s |
100 x GB200 NVL72 GPU 186GB | 54k tok/s |
1,000 x H200 SXM 141GB: 246k tokens/s, $2,480/hr, 700 kW.100 x GB200 NVL72 GPU 186GB: 54k tokens/s, $1,050/hr, no power figure.
H200 SXM 141GB: 246k tokens/s at 1000 GPUs.GB200 NVL72 GPU 186GB: 544k tokens/s at 1000 GPUs.
Size Qwen3.5-27B for a tokens per second target
The calculator starts from your traffic instead of a fleet: set a target rate and read the replica count for every GPU.
Frequently asked questions
How much GPU memory does Qwen3.5-27B need?
The weights take 55.6 GB at the native BF16 precision (55.6 GB at BF16, 27.8 GB at FP8, 15.6 GB at INT4). Each concurrent stream adds 64 KB of KV cache per token: 0.3 GB at 4,096 tokens and 2.1 GB at 32,768 tokens.
What is the bare minimum to run Qwen3.5-27B?
1 x Instinct MI355X OAM at BF16 with 4,096 tokens of context and one stream. The cheapest live rental for that footprint is 1 x RTX PRO 6000 Blackwell Max-Q Workstation Edition at $0.50 per hour.
How many H100s do you need to run Qwen3.5-27B?
one H100 at BF16 for 4,096 tokens of context and one stream. For 32,768 tokens and 32 concurrent streams the tensor-parallel group is 2 H100s, and 1,000 tokens per second takes 6 H100s across 3 replicas.
How much does Qwen3.5-27B cost per million tokens on an H100?
About $2.44 per million output tokens at BF16, 32,768 tokens of context and 32 streams, using the cheapest live on-demand price of $1.83 per GPU-hour. The cheapest part per token is 2 x RTX PRO 6000 Blackwell Max-Q Workstation Edition at $1.41.
What precision does Qwen3.5-27B ship in?
The published checkpoint is BF16. FP8 and INT4 figures describe post-training quantisations that halve and quarter the footprint at a small accuracy cost.
All figures are roofline estimates from the model's config.json and each GPU's published memory, bandwidth and tensor-core peak, with fixed efficiency factors. Prices are the cheapest live on-demand listing per GPU when the site has one. They are a planning floor; a tuned serving stack can do better. Only the 16 full-attention layers keep a per-token cache. The 48 linear-attention layers hold a fixed 151 MB state per sequence (48 value heads x 128 x 128 in FP32 per layer).








