Smart Wizard
Get a complete build plan based on budget and goals.
Build Comparison
Compare complete builds side by side.
Part Comparison
Check specs, price, and value across parts.
Bottleneck Calculator
Measure CPU and GPU balance before you buy.
Power Calculator
Estimate wattage and PSU headroom.
Will It Run?
Test your hardware against popular games.
Smart Wizard
Get a complete build plan based on budget and goals.
Build Comparison
Compare complete builds side by side.
Part Comparison
Check specs, price, and value across parts.
Bottleneck Calculator
Measure CPU and GPU balance before you buy.
Power Calculator
Estimate wattage and PSU headroom.
Will It Run?
Test your hardware against popular games.
Smart Wizard
Get a complete build plan based on budget and goals.
Build Comparison
Compare complete builds side by side.
Part Comparison
Check specs, price, and value across parts.
Bottleneck Calculator
Measure CPU and GPU balance before you buy.
Power Calculator
Estimate wattage and PSU headroom.
Will It Run?
Test your hardware against popular games.
Western Digital

Performance, endurance, NAND architecture, thermals, and compatibility.
| Merchant | Price |
|---|
| $/GB |
|---|
| Availability |
|---|
| Total |
|---|
Newegg | $200.34 | $0.200 | In Stock | $200.34 | Buy |
About This Product
The Western Digital Blue SN550 is a 1TB NVMe SSD utilizing the PCIe Gen3 x4 interface. It offers improved performance over SATA SSDs, making it suitable for general computing tasks and as a primary drive for system responsiveness. While faster than SATA, it does not compete with higher-end PCIe Gen4 drives in raw sequential speeds, but offers a good balance of performance and cost for its generation.
Verdict
βA solid upgrade from SATA, but consider newer Gen4 drives if budget allows for better performance.β
Performance, endurance, NAND architecture, thermals, and compatibility.
Sequential, random, and sustained speeds.
Sequential Read
2,400 MB/s
Sequential Write
1,950 MB/s
4K Random Read
345K IOPS
4K Random Write
385K IOPS
SLC Cache
12GB
How long the drive lasts under sustained writes.
TBW (lifetime writes)
600 TB
Drive Writes/Day
0.82 DWPD
MTBF
1.7M hours
Warranty
2 years
Controller, NAND, and cache β what most retailers don't show you.
DRAM Cache
No
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