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Western Digital · PCIe 4.0 · 500 GB

WD Blue SN5100 500GB

M.2 2280 · QLC NAND · Host-Memory-Buffer (HMB)

Performance
68
Perf / price
74
Capacity value
37
Amazon
$137
$137
Available on Amazon Updated Aug 29, 2026
Performance67.9
Performance / price74.4
Capacity value37.2

Written analysis

WD Blue SN5100 500GB at a glance

The WD Blue SN5100 500GB is a 500 GB M.2 2280 SSD using PCIe 4.0 x4, NVMe 2.0. The controller is Polaris 3 A101-000103-A1. Flash type is QLC 218-layer. Cache is listed as Host-Memory-Buffer (HMB).

Rated sequential throughput is 6600 MB/s read and 5600 MB/s write. Random throughput is 660K read IOPS and 1100K write IOPS. The calculated specification score is 67.9.

Best fit: General storage workloads where compatibility and price matter more than peak transfer rates.

Endurance and thermals

Rated endurance is 300 TBW, or approximately 600 TBW per TB of capacity. The listed warranty is 5 years. Active power is listed at 3.9 W. Check the drive and motherboard guidance to determine whether a heatsink is recommended for sustained transfers.

Current value

At $137, the drive costs $273.98 per TB. Performance / price is 74.4 and capacity value is 37.2. Compare these values with nearby drives below; interface generation and headline speed alone do not determine value.

Drive data

Full specifications

Interface, flash, controller, cache, throughput, endurance, power, warranty, and value in one technical sheet.

General

Manufacturer
Western Digital
SSD
WD Blue SN5100 500GB
Part number
WDS500G5B0E
Model
WDS500G5B0E
Capacity
500 GB
Form factor
M.2 2280
Launch price
Amazon price
$137
Amazon availability
Available
Price updated
Aug 29, 2026

Performance

Sequential read
6600 MB/s
Sequential write
5600 MB/s
Random read
660K IOPS
Random write
1100K IOPS

Value

Amazon price
$137
Price / TB
$273.98
Performance / price
74.4
Capacity value
37.2

Hardware & cache

Interface
PCIe 4.0 x4, NVMe 2.0
Interface generation
PCIe 4.0
Controller
Polaris 3 A101-000103-A1
NAND
QLC 218-layer
Process
16
Cache type
Host-Memory-Buffer (HMB)
DRAM
Host-Memory-Buffer (HMB)
DRAM capacity
64 MB
DRAM speed
2000 MT/s
SLC cache
Dynamic

Durability & power

Endurance
300 TBW
Endurance / TB
600 TBW
Warranty
5 years
Idle power
Active power
3.90 W

Additional information

Also listed as
SN5100 500GB
Color
Blue

Amazon

Price history

Nearby performance

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Vendor copy

Amazon listing details

Marketplace feature text kept for reference. Structured specifications above are the source for scores and comparisons.

SPEED UP PROJECTS. Accelerate your AI-enabled workflow with PCIe Gen 4.0 speeds up to 7,100 MB/s,[2] (1TB-2TB[1] models) 30% faster than our prior generation.[3]

CREATE AND STORE MORE. Make more room for your masterpieces with capacities up to 2TB[1] on M.2 2280 with Sandisk 3D CBA NAND technology.

WORK FASTER. Copy large files or project folders in blistering speeds thanks to our Sandisk nCache 4.0 technology.

CREATE CONFIDENTLY. Know your new SSD is covered with Sandisk’s 5-year limited warranty.[6]

ACRONIS TRUE IMAGE DOWNLOAD. Download Acronis True Image for Sandisk data migration software to transfer your files to your new drive.[4]