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Mistral AIDense

Mistral Medium 3.5 RAM Calculator

For Mistral Medium 3.5, plan about 96GB system RAM at Q4_K_M / 8K context for this 128B dense large model (262K-token window). Mistral Medium 3.5 weights are available for local runtimes (llama.cpp / Ollama / vLLM class stacks) — buy kits you can fill with dual-channel DDR5 (or ECC RDIMM on true workstations).

Mistral Medium 3.5 is a dense 128B instruction-following model from Mistral AI. It supports text and image inputs with text output, and is designed for agentic workflows, coding, and complex...

Standard Recommendation

96GB RAM

Calculated for 4-bit (Q4_K_M) @ 8K Context

1. Workload

Inference sizes run-time memory. Training adds optimizer/activation headroom and steers toward ECC.

2. Hardware path

CPU + RAM offload path: full model weights reside in system RAM (llama.cpp / similar). Dual-channel DDR5 bandwidth is the speed bottleneck.

3. Quantization

GGUF-style bit widths for planning. Native FP4/FP8 trainer footprints can differ.

4. Context length

Grows KV cache (inference) or activation scratch (training ballpark).

8,192 tokens

Inference bandwidth snapshot

DDR4 ~45 GB/s

0.6 t/s

DDR5 ~96 GB/s

1.3 t/s

Unified ~300 GB/s

4.2 t/s

VRAM ~1008 GB/s

14.0 t/s

Host RAM target

96GB

Inference · CPU offload · Q4 K_M

32GB64GB96GB128GB192GB
Model weights:72 GB
KV cache:0.31 GB
OS / runtime:8 GB
Host total:80.3 GB

Kit picks (96GB)

Disclosure: As an Amazon Associate I earn from qualifying purchases. Rankings use price and spec data only — not paid placement. How we rank products

CORSAIR Vengeance RGB DDR5 RAM 96GB (2x48GB) 6000MHz CL30 Intel XMP iCUE Compatible Computer Memory - Black (CMH96GX5M2B6000C30)

UDIMM2-stick kit
$189.99$1.98/GBIn stock

Best match for dual-channel desktop boards (populate the recommended slots).

DetailsBuy on Amazon →

A-Tech 96GB Kit (2x48GB) DDR5 5600MHz PC5-44800 CL46 SODIMM 2Rx8 Dual Rank 1.1V Non-ECC Unbuffered SO-DIMM 262-Pin Laptop Computer RAM Memory Upgrade Modules

SO-DIMMECC2-stick kit
$1530.87$15.95/GBIn stock

Laptop / mini-PC form factor — will not fit desktop DIMM slots.

DetailsBuy on Amazon →

CORSAIR Vengeance DDR5 RAM 96GB (2x48GB) 6000MHz CL36-44-44-96 1.4V AMD EXPO Intel XMP 3.0 Desktop Computer Memory – Gray (CMK96GX5M2E6000Z36)

UDIMM2-stick kit
$1255.00$13.07/GBIn stock

Best match for dual-channel desktop boards (populate the recommended slots).

DetailsBuy on Amazon →

CORSAIR Vengeance RGB DDR5 RAM 96GB (2x48GB) Up to 6000MHz CL36-44-44-96 1.4V AMD EXPO Intel XMP 3.0 Desktop Computer Memory – Gray (CMH96GX5M2E6000Z36)

UDIMM2-stick kit
$849.99$8.85/GBIn stock

Best match for dual-channel desktop boards (populate the recommended slots).

DetailsBuy on Amazon →

G.SKILL Ripjaws DDR5 SO-DIMM Series DDR5 RAM 96GB (2x48GB) 5600MT/s CL46-45-45-89 1.10V Unbuffered Non-ECC Notebook/Laptop Memory SO-DIMM (F5-5600S4645A48GX2-RS)

SO-DIMMECC2-stick kit
$1429.99$14.90/GBIn stock

Laptop / mini-PC form factor — will not fit desktop DIMM slots.

DetailsBuy on Amazon →

NEMIX RAM 96GB (2X48GB) DDR5 5600MHz PC5-44800 2Rx8 1.1V CL46 288-PIN Non-ECC Unbuffered UDIMM Desktop PC Memory KIT

UDIMMECC2-stick kit
$1598.49$16.65/GBIn stock

Best match for dual-channel desktop boards (populate the recommended slots).

DetailsBuy on Amazon →
All 96GB prices →Check board fit in RAM Finder →

Why Mistral Medium 3.5 pressures system RAM

Mistral Medium 3.5 is a dense 128B network — every weight participates each token, so quantization choice dominates. Q4_K_M lands near ~72GB weights, plus ~0.31GB KV at 8K and ~8GB overhead (~80.3GB → 96GB kit). The 262K-token context ceiling is the sleeper cost: long-doc or agent traces inflate KV while the 128B slab stays fixed. Prefer dual-channel DDR5 bandwidth when CPU offload or mmap is involved.

What RAM kit to buy

Buy a matched dual-channel DDR5 kit at 96GB for Mistral Medium 3.5 (EXPO/XMP only if stable). Avoid single-stick installs — local inference is bandwidth-sensitive when layers spill to host memory. Pair with 4x RTX 3090 / 4090 (96GB VRAM) or Apple Mac Studio (128GB Unified Memory) when staying in the Multi-GPU Workstation / Mac Studio tier, and keep 20–30% RAM free for the OS + browser.

Workload notes

Mistral releases like Mistral Medium 3.5 are common in production vLLM; dual-channel bandwidth helps prompt throughput when CPU offload is in play. At 128B, Mistral Medium 3.5 sits in the large local-LLM band: Q4 on a strong GPU is realistic, FP16 usually is not on consumer cards. Release window noted as 2025/2026; always re-check the model card before buying hardware for a specific checkpoint.

Next steps:96GB RAM pricesDDR5 RAM pricesCapacity comparisonRAM Finder

Technical Specifications

Total Parameter Count128 Billion
Active Parameters Per TokenDense (All active)
Maximum Context Window262K tokens
Primary Framework SupportOllama, llama.cpp, ExLlamaV2, vLLM

GPU & VRAM Sizing Profile

Multi-GPU Workstation / Mac Studio
Est. VRAM Required78 GB VRAM
Target GPU Hardware4x RTX 3090 / 4090 (96GB VRAM) or Apple Mac Studio (128GB Unified Memory)

Hardware Profile: Advanced workspace setup. Apple Silicon Mac Studios with Unified Memory provide a massive cost-saving advantage here by utilizing pooled high-bandwidth shared RAM.

Mistral Medium 3.5 Memory FAQs

How much RAM for Mistral Medium 3.5 at Q4 vs FP16?

At Q4_K_M with an 8K context we estimate ~96GB system kits for Mistral Medium 3.5 (weights ~72GB). FP16 jumps to roughly a 384GB kit class and often wants 78GB-class VRAM instead of host RAM alone — use the on-page calculator to retarget context and quant.

Does Mistral Medium 3.5 need dual-channel RAM?

Yes for local inference. Dual-channel DDR4/DDR5 (or wide LPDDR/unified memory) keeps prompt eval and CPU offload from hitching. A single stick often halves bandwidth and feels like a slow model even when capacity looks sufficient.

What GPU tier fits Mistral Medium 3.5?

Multi-GPU Workstation / Mac Studio: target about 78GB VRAM (4x RTX 3090 / 4090 (96GB VRAM) or Apple Mac Studio (128GB Unified Memory)). Advanced workspace setup. Apple Silicon Mac Studios with Unified Memory provide a massive cost-saving advantage here by utilizing pooled high-bandwidth shared RAM.

Can I run Mistral Medium 3.5 with less than 96GB if I lower context?

Yes — shorter context shrinks KV (~0.31GB at 8K). Dropping to 2K–4K context can fit smaller kits, but keep OS headroom; paging kills tokens/s more than a slightly larger kit costs.

Same VRAM tier

Models that land in the same hardware profile (Multi-GPU Workstation / Mac Studio) at Q4 / 8K context.

Devstral 2 2512Qwen3.5-122B-A10BMistral Small 4 (119B MoE)Command ALlama 4 Scout (109B MoE)Qwen3 Coder Next

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