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SanDisk · PCIe 4.0 · 500 GB

SANDISK Optimus 5100 500GB

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

Performance
68
Perf / price
72
Capacity value
36
Amazon
$141
$141
Available on Amazon Updated Aug 29, 2026
Performance67.9
Performance / price72.4
Capacity value36.2

Written analysis

SANDISK Optimus 5100 500GB at a glance

The SANDISK Optimus 5100 500GB is a 500 GB M.2 2280 SSD using PCIe 4.0 x4, NVMe 2.0. The controller is WD Polaris 3. Flash type is 3D QLC NAND (BiCS8). 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.

Current value

At $141, the drive costs $281.26 per TB. Performance / price is 72.4 and capacity value is 36.2. 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
SanDisk
SSD
SANDISK Optimus 5100 500GB
Model
SDSP51500GAN
Capacity
500 GB
Form factor
M.2 2280
Launch price
Amazon price
$141
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
$141
Price / TB
$281.26
Performance / price
72.4
Capacity value
36.2

Hardware & cache

Interface
PCIe 4.0 x4, NVMe 2.0
Interface generation
PCIe 4.0
Controller
WD Polaris 3
NAND
3D QLC NAND (BiCS8)
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

Amazon

Price history

Nearby performance

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Discussion

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