Ready-made build recommendations · EU

Best NAS for 40 TB

A complete, explainable recommendation for the A long-term NAS with 40 TB usable capacity, parity redundancy and room to grow. — components, reasoning, trade-offs, energy cost and upgrade path, generated by the WisePC decision engine.

Your requirements

CPU threads: 4
RAM: 40 GB
Storage: 60 TB
GPU: none

System blueprint

The system as a whole — before the shopping list.

Mission

File storage· primary · 2 users
Backup· primary · 1 users
Photo storage· secondary · 1 users

Constraints

Budget: 1400 €
Region: eu
Storage: 40 TB (parity 1)
Network: —
Energy priority: 4/10
Noise priority: 3/10
Expansion priority: 10/10

Recommended architecture

diy · tower build on LGA 1851 + Intel B860

Compute: Intel Core Ultra 9 285
Memory: TEAMGROUP T-Create Expert Black / Gold DDR5-6400 CL32 48GB (2x24GB)
Storage: Seagate Exos M 36TB 3.5" HDD 7200RPM SATA 6.0 Gb/s
Networking: —
Cooling: Thermalright Le Grand Macho Air 159mm Fanless
Power: SeaSonic PRIME Fanless Black 700W Fully Modular 80+ Titanium Certified
Expansion: 3× PCIe, 2× M.2, 2× SATA, 2 bay, 2× RAM

Recommended build

Smart build — best all-round

Architecture: tower build on LGA 1851 + Intel B860

0 €

Total

Performance: 100
Value: 100
Efficiency: 74
Expandability: 100
Silence: 95
Longevity: 100
Reliability: 75
Overall: 100

Idle: 34 W
Typical: 59 W
Peak: 104 W
Energy / year: ≈144 €

Assessment

balanced

Role	Component	Qty	Price	Buy
cpu	Intel Core Ultra 9 285	1	—	…
motherboard	Asus B860 PRIME B860M-A LGA1851 DDR5 Micro ATX	1	—	…
ram	TEAMGROUP T-Create Expert Black / Gold DDR5-6400 CL32 48GB (2x24GB)	1	—	…
case	Cougar DarkBlader-G ATX Full Tower Black / Silver with Tempered Glass Side Panel and USB 3.2 Gen 1 Type-A Front Panel	1	—	…
cooling	Thermalright Le Grand Macho Air 159mm Fanless	1	—	…
psu	SeaSonic PRIME Fanless Black 700W Fully Modular 80+ Titanium Certified	1	—	…
storage	Seagate Exos M 36TB 3.5" HDD 7200RPM SATA 6.0 Gb/s	2	—	…
Total:			0 €

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Why this build

Intel Core Ultra 9 285: 24 threads covers the 4 needed with headroom.
Motherboard Intel B860 (LGA 1851): matches the CPU socket and case size.
RAM: 48GB DDR5 — meets the 40GB the workload requires.
Chose Intel Core Ultra 9 285 over Intel Core Ultra 7 265F: better overall fit for your priorities.

Why not the alternative

All variants are close; the winner matches your priorities best.

What limits you first

RAM is the closest to its limit (83% of capacity in use). RAM will force the next upgrade.

Smart next upgrades

Add Seagate Exos M 36TB 3.5" HDD 7200RPM SATA 6.0 Gb/s
Upgrade motherboard to Asus ROG STRIX B550-F GAMING WIFI II

Other builds to consider

Value build — most for your money

0 €

Idle: 32 W · Overall: 100/100 · balanced

Long-term build — expandable & future-proof

0 €

Idle: 34 W · Overall: 100/100 · balanced