Qwen3 Coder 480B A35B (free) RAM Calculator
Qwen3-Coder-480B-A35B-Instruct is a Mixture-of-Experts (MoE) code generation model developed by the Qwen team. It is optimized for agentic coding tasks such as function calling, tool use, and long-context reasoning over...
384GB RAM
Calculated for 4-bit (Q4_K_M) @ 8K Context1. Select Quantization Level
Quantization compresses model weights to reduce RAM usage, with minor impacts on output quality.
2. Set Target Context Length
Longer contexts require more active memory for the Key-Value (KV) cache.
Inference Bandwidth & Speed Matrix
Estimates generation speeds (tokens per second) based on physical memory channel bandwidth constraints.
DDR4 CPU Mode
45 GB/s
0.5 t/s
DDR5 CPU Mode
96 GB/s
1.0 t/s
Mac Unified Memory
300 GB/s
3.0 t/s
GPU VRAM (RTX 4090)
1008 GB/s
5.0 t/s
*Token throughput calculated strictly from weight volume transfers over memory channels. Actual generation speeds can be further throttled by processing threads or VRAM offloading parameters.
384GB System RAM
Stably runs model with Q4/Q8/FP16 quantization & target context windows.
Memory Allocation Sizer
Dynamic Dual-Channel Picks (384GB)
NEMIX RAM 384GB (12X32GB) DDR4 3200MHZ PC4-25600 2Rx4 1.2V CL22 288-PIN ECC RDIMM Registered Server Memory KIT
NEMIX RAM 384GB (6X64GB) DDR5 4800MHZ PC5-38400 2Rx4 1.1V CL40 288-PIN ECC RDIMM Registered Server Memory
NEMIX RAM 384GB (6X64GB) DDR5 4800MHZ PC5-38400 2Rx4 1.1V CL40 288-PIN ECC RDIMM Registered Server Memory KIT Compatible with Dell Precision 7960 Rack/Tower Workstation
NEMIX RAM 384GB (6X64GB) DDR5 4800MHZ PC5-38400 2Rx4 1.1V CL40 288-PIN ECC RDIMM Registered Server Memory KIT Compatible with ASUS 2U Dual-Socket Server Model RS720-E11-RS12U
Technical Specifications
GPU & VRAM Sizing Profile
Enterprise GPU Node / Mac Studio 192GBHardware Profile: Server-scale deployment. Running this model locally requires extreme unified memory Apple systems or professional multi-GPU servers.
Qwen3 Coder 480B A35B (free) Memory FAQs
How much RAM does Qwen3 Coder 480B A35B (free) require?
To run Qwen3 Coder 480B A35B (free) locally, memory size depends on your selected quantization. At 4-bit compression (Q4_K_M), the weights take up ~270GB of RAM. When combined with context cache and OS overhead, a standard **384GB system memory kit** is recommended. Unquantized FP16 execution requires a **1024GB memory setup**.
What are the hardware requirements to run Qwen3 Coder 480B A35B (free) at FP16 precision?
Running Qwen3 Coder 480B A35B (free) at unquantized 16-bit precision requires loading ~960GB of model weights directly into VRAM or system memory. A minimum system memory target of **1024GB RAM** is required to run the weights stably and avoid out-of-memory crashes.
Is Qwen3 Coder 480B A35B (free) dense or Mixture-of-Experts (MoE)?
Qwen3 Coder 480B A35B (free) is built on a **MoE** architecture. It has a total of 480 Billion parameters, but only activates 60 Billion parameters per token. While active parameter sparse execution makes token computing very fast, the entire 480B parameters must reside in VRAM/RAM for fast expert switching during execution.
How does context window size affect RAM usage for Qwen3 Coder 480B A35B (free)?
Context size directly scales the size of the Key-Value (KV) cache. At a standard 8,192 token context, the KV cache for Qwen3 Coder 480B A35B (free) uses ~0.15GB. If you scale this to 1 Million tokens, the KV cache can scale past hundreds of GBs, requiring multi-GPU or workstation-class RAM configurations.