DatacenterDisk

Fikwot FX660 vs WD Black

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

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Our Recommendation
👑
Fikwot FX660 4TB Dynamic SLC Cache Speeds up to

Fikwot FX660 4TB Dynamic SLC Cache Speeds up to wins on both price ($109.25/TB) and warranty (5 years).

Best $/TB: Fikwot
Best Warranty: WD
Best for RAID: Fikwot
Full Specification Comparison
Spec
Fikwot
FX660 4TB Dynamic SLC Cache Speeds up to
$109.25/TB
WD
Black SN8100 2TB PCIe 5.0 M.2
$200.00/TB
Brand
Fikwot
WD
Model
FX660 4TB Dynamic SLC Cache Speeds up to
Black SN8100 2TB PCIe 5.0 M.2
Series
—
—
Part Number
B0FR4X2P8X
B0F3BD1W6R
$/TB
👑$109.25
$200.00
Price
$436.99
$399.99
Condition
New
New
Capacity
4TB
2TB
Interface
NVMe-PCIe4
NVMe-PCIe5
Form Factor
M.2 2280
M.2 2280
Drive Type
PS5-SSD
PS5-SSD
Recording Tech
—
—
RPM
N/A (SSD)
N/A (SSD)
Cache
—
—
Sector Size
—
—
Workload Rating
—
—
DWPD
N/A
N/A
Warranty
👑5 years
👑5 years
Workload Tier
ps5
ps5
In Stock
✓ In Stock
✓ In Stock
Buy
Buy on Amazon →
Buy on Amazon →
Workload Fit
Workload
Fikwot
WD
NAS Storage
○
○
Backup Target
●
●
OLTP Database
●●●
●●●
Cold Archive
●
●
Virtualization
●●●
●●●
AI/ML Storage
●●●
●●●
Buying Recommendation
Choose Fikwot FX660 4TB Dynamic SLC Cache Speeds up to if:
  • ✓ You need maximum storage per dollar
  • ✓ You need new-with-warranty for compliance or budgeting
Buy Fikwot →
Choose WD Black SN8100 2TB PCIe 5.0 M.2 if:
  • ✓ You need 5-year warranty coverage for production
  • ✓ You need new-with-warranty for compliance or budgeting
Buy WD →

Frequently Asked Questions

Fikwot FX660 offers better value at $109.25/TB vs $200.00/TB - a 45% 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.

Fikwot FX660 is the better fit for NAS storage.