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SANDISK Optimus 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 ($165.00/TB) and warranty (5 years).

Best $/TB: WD
Best Warranty: WD
Best for RAID: SANDISK
Full Specification Comparison
Spec
SANDISK
Optimus GX PRO 8TB 850X NVMe Internal Gaming Solid State Drive with
$256.25/TB
WD
WD_Black SN850X 8TB NVMe SSD with Heatsink
$165.00/TB
Brand
SANDISK
WD
Model
Optimus GX PRO 8TB 850X NVMe Internal Gaming Solid State Drive with
WD_Black SN850X 8TB NVMe SSD with Heatsink
Series
—
—
Part Number
B0GJF1KVLY
B0D9WTM2TH
$/TB
$256.25
👑$165.00
Price
$2049.99
$1319.99
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
Check
Buy
Buy on Amazon →
Buy on Amazon →
Workload Fit
Workload
SANDISK
WD
NAS Storage
○
○
Backup Target
●
●
OLTP Database
●●●
●●●
Cold Archive
●●
●●
Virtualization
●●●
●●●
AI/ML Storage
●●●
●●●
Buying Recommendation
Choose SANDISK Optimus GX PRO 8TB 850X NVMe Internal Gaming Solid State Drive with if:
  • ✓ You need new-with-warranty for compliance or budgeting
Buy SANDISK →
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 $165.00/TB vs $256.25/TB - a 36% 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.

SANDISK Optimus is the better fit for NAS storage.

SANDISK Optimus vs WD WD_Black - Comparison | DatacenterDisk