Can you run Qwen 2.5 72B Instruct locally?
Qwen 2.5 family · September 2024 · 72.7B parameters · Hugging Face model card
You need a GPU with 48 GB of VRAM to run Qwen 2.5 72B Instruct locally at Q4_K_M with a 4k-token context, which requires about 49.3 GB of VRAM. An 80 GB data center GPU such as the H100 80GB or A100 80GB runs it comfortably, and two 24 GB consumer GPUs cover the requirement only with tensor parallelism at reduced efficiency.
Minimum: 48 GB VRAM GPU (RTX A6000, RTX 6000 Ada) at Q4_K_M, 4k context · Recommended: 80 GB VRAM GPU (H100 80GB, A100 80GB) at Q5_K_M–Q6_K
How much VRAM does Qwen 2.5 72B Instruct need at each quantization?
Qwen 2.5 72B Instruct needs 49.3 GB of VRAM at Q4_K_M. The table below lists weights-only size and total VRAM including overhead for each common quantization level with 4k and 32k token contexts.
| Quantization | Bits / weight | Weights only | Total + KV @4k ctx | Total + KV @32k ctx |
|---|---|---|---|---|
| Q4_K_M | 4.8 | 43.6 GB | 49.3 GB | 58.7 GB |
| Q5_K_M | 5.7 | 51.8 GB | 58.3 GB | 67.7 GB |
| Q6_K | 6.6 | 60.0 GB | 67.3 GB | 76.7 GB |
| Q8_0 | 8.5 | 77.3 GB | 86.3 GB | 95.7 GB |
| FP16 | 16 | 145.4 GB | 161.3 GB | 170.7 GB |
Method: weights = parameters × bits-per-weight (Q4_K_M ≈ 4.8, Q5_K_M ≈ 5.7, Q6_K ≈ 6.6, Q8_0 ≈ 8.5, FP16 = 16), plus 10% loading overhead, plus KV cache from the verified architecture config (80 layers, 8 KV heads, 128 head dim). Source: Params 72.71B (T12 reference 72,705,384,448), 80 layers, 8 KV heads, head dim 128, 32768 context — HF config.json (Qwen/Qwen2.5-72B-Instruct), fetched 2026-08-26.
Which GPUs can run Qwen 2.5 72B Instruct locally?
At Q4_K_M with a 4k context, Qwen 2.5 72B Instruct needs 49.3 GB of VRAM. The lists below are computed live from our GPU database and grouped by how much headroom the card has. Disclosure: CompareAIHardware.com participates in the Amazon Associates program and earns from qualifying purchases through links on this page. Affiliate relationships do not influence our recommendations.
Runs Qwen 2.5 72B Instruct comfortably (25%+ VRAM headroom)
| GPU | VRAM | Bandwidth | Type | |
|---|---|---|---|---|
| H100 SXM | 80 GB | 3350 GB/s | Data Center GPU | |
| NVIDIA A100 80GB SXM | 80 GB | 2039 GB/s | Data Center GPU | |
| NVIDIA H100 PCIe 80GB | 80 GB | 2039 GB/s | Data Center GPU | |
| NVIDIA RTX PRO 6000 Blackwell | 96 GB | 1792 GB/s | Pro GPU | Check price |
| NVIDIA RTX PRO 6000 Blackwell Max-Q Workstation Edition | 96 GB | — | Pro GPU | |
| NVIDIA RTX PRO 6000 Blackwell Server Edition | 96 GB | — | Pro GPU | |
| H200 SXM | 141 GB | 4800 GB/s | Data Center GPU | |
| AMD Instinct MI300X | 192 GB | 5300 GB/s | Data Center GPU | |
| NVIDIA B200 | 192 GB | 8000 GB/s | Data Center GPU | |
| AMD Instinct MI325X | 256 GB | 6000 GB/s | Data Center GPU | |
| AMD Instinct MI350X | 288 GB | 8000 GB/s | Data Center GPU | |
| AMD Instinct MI355X | 288 GB | 8000 GB/s | Data Center GPU | |
| NVIDIA B300 (Blackwell Ultra) | 288 GB | 8000 GB/s | Data Center GPU | |
| AMD Instinct MI430X | 432 GB | 23300 GB/s | Data Center GPU | |
| AMD Instinct MI455X | 432 GB | 23300 GB/s | Data Center GPU |
Needs 2+ GPUs to run Qwen 2.5 72B Instruct
One of these cards is too small on its own, but a pair (tensor or pipeline parallel, ~90% efficiency) covers the 49.3 GB requirement. See our multi-GPU guide for setup.
| GPU | VRAM | Bandwidth | Type | |
|---|---|---|---|---|
| AMD Radeon PRO W6800 | 32 GB ×2 | 512 GB/s | Pro GPU | |
| AMD Radeon Pro W7800 | 32 GB ×2 | 576 GB/s | Pro GPU | Check price |
| GeForce RTX 5090 | 32 GB ×2 | 1792 GB/s | Consumer GPU | Check price |
| Intel Arc Pro B65 | 32 GB ×2 | 608 GB/s | Pro GPU | |
| Intel Arc Pro B70 | 32 GB ×2 | 608 GB/s | Pro GPU | |
| NVIDIA RTX 5000 Ada | 32 GB ×2 | 576 GB/s | Pro GPU | Check price |
| NVIDIA RTX PRO 4500 Blackwell | 32 GB ×2 | 896 GB/s | Pro GPU | Check price |
| NVIDIA A100 40GB SXMEOL | 40 GB ×2 | 1555 GB/s | Data Center GPU | |
| AMD Radeon PRO W7900 Dual Slot | 48 GB ×2 | 864 GB/s | Pro GPU | |
| AMD Radeon Pro W7900 | 48 GB ×2 | 864 GB/s | Pro GPU | Check price |
| NVIDIA RTX PRO 5000 Blackwell | 48 GB ×2 | 1344 GB/s | Pro GPU | |
| RTX 6000 Ada | 48 GB ×2 | 960 GB/s | Pro GPU | Check price |
| RTX A6000 | 48 GB ×2 | 768 GB/s | Pro GPU | Check price |
Can a Mac run Qwen 2.5 72B Instruct?
Yes — these Apple Silicon machines fit Qwen 2.5 72B Instruct at Q4_K_M, since macOS lets the GPU use about 75% of unified memory. Generation speed is bound by memory bandwidth, so the GB/s column matters as much as capacity.
| Apple Silicon | Unified memory | Usable by GPU (~75%) | Bandwidth |
|---|---|---|---|
| Apple M3 Max | 128 GB | 96 GB | 400 GB/s |
| Apple M5 Max | 128 GB | 96 GB | 614 GB/s |
| M4 Max (MacBook Pro) | 128 GB | 96 GB | 546 GB/s |
| M5 Max (Mac Studio) | 128 GB | 96 GB | — |
| M5 Ultra (Mac Studio) | 512 GB | 384 GB | 1200 GB/s |
Can Qwen 2.5 72B Instruct run on mini PCs, Jetson, or NPU devices?
These edge and NPU devices from our database have enough memory for Qwen 2.5 72B Instruct at Q4_K_M. Their memory bandwidth is far below discrete GPUs, so expect a fraction of desktop generation speed.
| Device | Memory | Bandwidth | Type |
|---|---|---|---|
| Jetson AGX Orin 64GB | 64 GB | 204 GB/s | Edge Compute Device |
| Snapdragon X Elite (X1E-84-100) | 64 GB | 135 GB/s | NPU Chip |
| AMD Ryzen AI 9 HX 370 (Strix Point) | 96 GB | 120 GB/s | NPU Chip |
| NVIDIA Jetson AGX Thor Developer Kit | 128 GB | — | Edge Compute Device |
| NVIDIA RTX Spark (superchip) | 128 GB | — | NPU Chip |
| NVIDIA RTX Spark N1X (desktop superchip) | 128 GB | — | NPU Chip |
Which pre-built systems can run Qwen 2.5 72B Instruct?
These mini PCs and workstations from our database fit Qwen 2.5 72B Instruct at Q4_K_M. Usable-memory figures are conservative: Windows shares about half of system RAM with the GPU by default (Linux can expose more), macOS lets Apple Silicon GPUs use about 75% of unified memory, and Linux unified-memory systems such as GB10 expose roughly 90%. Generation speed is bound by memory bandwidth, so compare the GB/s column before buying.
Frequently asked questions
How much VRAM does Qwen 2.5 72B need?
Qwen 2.5 72B Instruct needs about 49.3 GB of VRAM at Q4_K_M with a 4k-token context: 43.63 GB of weights plus 10% loading overhead plus a 1.34 GB KV cache. A 32k context raises the requirement to about 58.7 GB.
Can two RTX 3090s run Qwen 2.5 72B?
Two RTX 3090s provide 48 GB combined, about 43 GB usable after tensor-parallel efficiency losses — short of the ~49 GB needed at Q4_K_M with a 4k context. Use a lower quant or a 48+ GB single card instead.
What is the difference between Qwen 2.5 72B and Llama 3.3 70B?
Both are dense models in the same size class with nearly identical VRAM requirements at a given quantization level. Qwen 2.5 72B has a verified 32k context window; Llama 3.3 70B extends to 128k tokens.
Related guides
- Open Qwen 2.5 72B Instruct in the VRAM calculator — pick quantization and context, see the memory math per GPU class.
- Best GPUs for LLMs
- VRAM Calculator