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Storage
WD_Black SN850X
Western Digital
$1,59999
860 EVO
Samsung
$1,27500
Capacity Gb
80004000
Capacity
8 TB4 TB
Flash Type
TLCTLC
Form Factor
M.2 22802.5"
Heatsink
No No
Bus
M.2 PCIe 4.0 x4SATA Gen 3
NVMe
Yes No
PCIe Standard
PCIe 4.0N/A
Random I/O per Second (Read)
1,200,00098,000
Random I/O per Second (Write)
1,200,00090,000
SATA Speed
-6 Gb/s
Sequential Read Speed
7,200 MB/s550 MB/s
Sequential Write Speed
6,600 MB/s520 MB/s
Storage Type
Solid State DiskSolid State Disk
TDP
7.4W 4W
Part Number
WDS800T2X0EMZ-76P4T0BW MZ-76P4T0B
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Comparison Analysis

Comparing the WD_Black SN850X vs 860 EVO reveals distinct differences in their targeted use cases.

The 860 EVO is the more budget-friendly option, costing approximately $325 (25%) less than the WD_Black SN850X.