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HARDWARE FIT CHECK • DeepSeek-V4.1-Flash (552B Engram MoE) + Apple Mac Studio M2 Ultra (192GB Unified Memory)345.59 GB / 144 GB VRAM

Can I Run DeepSeek-V4.1-Flash (552B Engram MoE) on Apple Mac Studio M2 Ultra (192GB Unified Memory)?

Full VRAM footprint analysis, tokens/sec generation benchmark, and copy-paste Ollama & vLLM runtime commands for running DeepSeek-V4.1-Flash (552B Engram MoE) (552B) on Apple Mac Studio M2 Ultra (192GB Unified Memory) (144 GB).

✕ OOM345.59 GB (240%)0 t/s

Model & Target Hardware

interactive
Frontier SWE Coding (77.0 DeepSWE), 1M Context & 3D/Game Synthesis
GPU Topology / Quantity:Single GPU / Unified SoC
DeepSeek-V4.1-Flash (552B Engram MoE) on Apple Mac Studio M2 Ultra (192GB Unified Memory)

✕ Out of Memory — Exceeds VRAM Capacity

✕ OOM
Required VRAM
345.59 GB
240% of hardware capacity (144 GB)
Est. Decode Speed
0 tok/s
16B active params @ 800 GB/s
Available Headroom
-201.59 GB
Needs +201.59 GB more VRAM
Memory Allocation & Headroom
345.59 GB allocated of 144 GB capacity
240% utilized
Weights: 331.2 GB
KV: (32K): 2.05 GB
Overhead: 12.34 GB
Deficit: -201.59 GB
⚡ Architecture & Throughput Transparency: Single-user decode speed (~0 tok/s) is memory-bandwidth bound at batch size = 1 on Apple Mac Studio M2 Ultra (192GB Unified Memory) (800 GB/s). Prompt prefill / TTFT (~0 tok/s) is compute-bound and utilizes GPU Tensor cores. Actual latency varies with FlashAttention-2 and runtime engine (Ollama/vLLM/llama.cpp).
OLLAMA_FLASH_ATTENTION=1 OLLAMA_KV_CACHE_TYPE=q8_0 ollama run deepseek-v4.1-flash:552b

Local Hardware Configurations & Pricing

⚠️ Out of VRAM: High-Capacity Hardware Upgrades
High-bandwidth VRAM specs and current market prices
Multi-GPU Rig
48 GB VRAM

2x NVIDIA RTX 3090 Dual Rig (48GB Total VRAM)

Best price-to-VRAM homelab rig for 70B Q4_K_M & Qwen 3.8 27B Q8

936 GB/s700W TDP
$1,550Amazon Prime →
Apple Silicon
112 GB VRAM

Apple Mac Studio M4 Max (128GB Unified Memory)

Running Llama 4 Scout 109B & 70B Q8 locally with 128K+ context

546 GB/s145W TDP
$3,499Amazon Prime →
Apple Silicon Workstation
144 GB VRAM

Apple Mac Studio M2 Ultra (192GB Unified Memory)

Silent 144GB usable unified VRAM running 70B FP16 & 405B Q3

800 GB/s120W TDP
$6,999Amazon Prime →

⚠️ Out of VRAM? Don't downgrade model quality.

Out of VRAM

Spin up an on-demand cloud GPU instance in 60 seconds with pre-installed Ollama and vLLM. (DeepSeek-V4.1-Flash (552B Engram MoE) @ 345.59 GB VRAM)

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$0.34/hr (RTX 4070 Ti) – $2.39/hr (H100)
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$0.18/hr (RTX 3060) – $0.55/hr (RTX 4090)
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$1.99/hr (GH200 / H100)
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Quantization Precision Matrix

32K ctx • KV: Q8_0
QuantizationWeightsKV CacheTotal VRAMEst. SpeedFit Status
FP1616 bpw1104 GB2.05 GB1145.44 GB (795%)0 t/sOOM
Q8_08.5 bpw585.12 GB2.05 GB608.4 GB (422%)0 t/sOOM
Q6_K6.56 bpw452.64 GB2.05 GB471.28 GB (327%)0 t/sOOM
Q5_K_M5.68 bpw391.92 GB2.05 GB408.44 GB (284%)0 t/sOOM
Q4_K_M4.8 bpw331.2 GB2.05 GB345.59 GB (240%)0 t/sOOM
FP44.25 bpw292.56 GB2.05 GB305.6 GB (212%)0 t/sOOM
IQ3_XS3.3 bpw226.32 GB2.05 GB237.04 GB (165%)0 t/sOOM

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FAQ & Reference

Frequently Asked Questions: DeepSeek-V4.1-Flash (552B Engram MoE) on Apple Mac Studio M2 Ultra (192GB Unified Memory)

How much VRAM does DeepSeek-V4.1-Flash (552B Engram MoE) need on Apple Mac Studio M2 Ultra (192GB Unified Memory)?

At standard 4-bit quantization (Q4_K_M) with 32K context, DeepSeek-V4.1-Flash (552B Engram MoE) requires 345.59 GB of total VRAM (weights + KV cache + CUDA runtime overhead).

What inference speed will DeepSeek-V4.1-Flash (552B Engram MoE) achieve on Apple Mac Studio M2 Ultra (192GB Unified Memory)?

Based on Apple Mac Studio M2 Ultra (192GB Unified Memory)'s 800 GB/s memory bandwidth, expected decode speed is approximately 0 tokens per second.

Can I expand context beyond 32K tokens?

Each additional 32K tokens of context requires additional KV cache memory. For longer context windows, consider 8-bit or 4-bit KV cache quantization.