DatacenterDisk

Lexar 8TB vs WD WD_Black

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

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Our Recommendation
👑
WD WD_Black SN850X 8TB NVMe SSD with Heatsink

WD WD_Black SN850X 8TB NVMe SSD with Heatsink wins on both price ($172.50/TB) and warranty (5 years).

Best $/TB: WD
Best Warranty: WD
Best for RAID: Lexar
Full Specification Comparison
Spec
Lexar
8TB NM790 Internal NVMe SSD, 7000/6200 MB/s
$180.23/TB
WD
WD_Black SN850X 8TB NVMe SSD with Heatsink
$172.50/TB
Brand
Lexar
WD
Model
8TB NM790 Internal NVMe SSD, 7000/6200 MB/s
WD_Black SN850X 8TB NVMe SSD with Heatsink
Series
—
—
Part Number
B0DG6Q25M2
B0D9WTM2TH
$/TB
$180.23
👑$172.50
Price
$1441.80
$1379.99
Condition
New
New
Capacity
8TB
8TB
Interface
NVMe-PCIe4
NVMe-PCIe4
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
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Buy
Buy on Amazon →
Buy on Amazon →
Workload Fit
Workload
Lexar
WD
NAS Storage
○
○
Backup Target
●
●
OLTP Database
●●●
●●●
Cold Archive
●●
●●
Virtualization
●●●
●●●
AI/ML Storage
●●●
●●●
Buying Recommendation
Choose Lexar 8TB NM790 Internal NVMe SSD, 7000/6200 MB/s if:
  • ✓ You need new-with-warranty for compliance or budgeting
Buy Lexar →
Choose WD WD_Black SN850X 8TB NVMe SSD with Heatsink 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 WD →

Frequently Asked Questions

WD WD_Black offers better value at $172.50/TB vs $180.23/TB - a 4% 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.

Lexar 8TB is the better fit for NAS storage.