DatacenterDisk

Micron 7400 vs Samsung PM9A3

Side-by-side spec and price comparison. Live data from Amazon US.

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Our Recommendation
👑
Samsung PM9A3 3.84TB U.2 NVMe

Samsung PM9A3 3.84TB U.2 NVMe wins on both price ($166.41/TB) and warranty (5 years).

Best $/TB: Samsung
Best Warranty: Samsung
Best for RAID: Micron
Full Specification Comparison
Spec
Micron
7400 PRO 3.84TB U.3
$194.01/TB
Samsung
PM9A3 3.84TB U.2 NVMe
$166.41/TB
Brand
Micron
Samsung
Model
7400 PRO 3.84TB U.3
PM9A3 3.84TB U.2 NVMe
Series
7400 PRO
PM9A3
Part Number
MTFDKCB3T8TDZ
MZQL23T8HCLS
$/TB
$194.01
👑$166.41
Price
$749.00
$639.00
Condition
New
New
Capacity
3.84TB
3.84TB
Interface
NVMe-PCIe4
NVMe-PCIe4
Form Factor
U.3
U.2
Drive Type
SSD
SSD
Recording Tech
TLC
TLC
RPM
N/A (SSD)
N/A (SSD)
Cache
—
—
Sector Size
—
—
Workload Rating
—
—
DWPD
1 DWPD
1 DWPD
Warranty
👑5 years
👑5 years
Workload Tier
oltp
oltp
In Stock
Check
Check
Buy
Buy on Amazon →
Buy on Amazon →
Workload Fit
Workload
Micron
Samsung
NAS Storage
○
○
Backup Target
●
●
OLTP Database
●●●
●●●
Cold Archive
●
●
Virtualization
●●●
●●●
AI/ML Storage
●●●
●●●
Buying Recommendation
Choose Micron 7400 PRO 3.84TB U.3 if:
  • ✓ You need new-with-warranty for compliance or budgeting
Buy Micron →
Choose Samsung PM9A3 3.84TB U.2 NVMe if:
  • ✓ You need maximum storage per dollar
  • ✓ You need 5-year warranty coverage for production
  • ✓ You need new-with-warranty for compliance or budgeting
Buy Samsung →

Frequently Asked Questions

Samsung PM9A3 offers better value at $166.41/TB vs $194.01/TB - a 14% price difference. Factor in warranty length and workload rating when the price gap is small.

Mixing drives of different models in RAID is not recommended even if capacities match. Different firmware, error handling and seek patterns can cause rebuild issues. Use identical drives within the same RAID group for reliable operation.

Both drives carry 5-year warranties and are built for enterprise operation. Check brand-specific AFR data and Backblaze drive stats for real-world failure rate comparisons.

Micron 7400 is the better fit for NAS storage.