
PNY CS900
Score: 67/100
Western Digital WD Green
Score: 63/100Rankings

The PNY CS900 1TB is a budget-friendly 2.5-inch SATA III SSD delivering solid sequential speeds and low power draw. Its main trade-offs are limited SATA bandwidth, lack of endurance data and advanced features. Best suited for users upgrading older laptops or desktops where cost and basic performance matter.

The WD Green 1TB SATA SSD offers up to 545 MB/s sequential reads with ultra-low power consumption, making it a cost-effective choice for laptops and secondary storage. Its DRAM-less architecture and modest 400 TBW endurance limit performance for demanding tasks, and it's less suited as a primary boot drive. Best for budget-conscious users needing basic storage and long battery life.
| Attribute | ![]() | ![]() |
|---|---|---|
1,000 GBbest | 1,000 GBbest | |
535 MB/s | 545 MB/sbest | |
515 MB/s | 525 MB/sbest | |
— | 400 TBbest | |
2,000,000 hoursbest | 1,000,000 hours | |
— | 0 MBbest | |
| ↓ lower better | — | 0.08 Wbest |
3 yearsbest | 3 yearsbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Connectivity(1) | ||
Interface | SATA-III | SATA III 6Gb/s |
Performance(2) | ||
Sequential Read Speed (MB/s) | 535 MB/s | 545 MB/s |
Sequential Write Speed (MB/s) | 515 MB/s | 525 MB/s |
Storage(1) | ||
NAND Type | 3D TLC | TLC |
Reliability(1) | ||
Mean Time Between Failures (hours) | 2000000 hours | 1000000 hours |
Design & Build(3) | ||
Form Factor | 2.5-inch | 2.5" 7mm |
Weight (g) | 45 g | 32.6586 g |
Dimensions (L×W×H) (mm) | 100x70x7 mm mm | 100.6x69.9x7.1 mm mm |


Products in the top-left offer the best value (high score, low price).

Professional reviewers and editors are scarce for this model; vendor and spec-sheet commentary positions the CS900 as a reliable, value-oriented HDD replacement, emphasizing its solid sequential performance and low power draw while noting the lack of advanced features found in higher-end SSDs.
Everyday users appreciate the noticeable speed boost over HDDs, especially faster boot and application launch times, and the quiet, low-heat operation. However, the limited amount of user feedback and absence of detailed endurance specs generate some uncertainty about long-term durability.

Professional reviewers position the WD Green 1TB as a budget-oriented SATA SSD that excels in power efficiency and price, but its DRAM-less design and modest endurance make it unsuitable for high-performance or write-heavy scenarios.
General users praise the drive for its rapid game loading, smooth everyday performance, and easy installation, seeing it as a solid value for a 2 TB capacity. Recurring concerns revolve around thermal throttling without a heatsink and occasional slowdowns during long write operations, especially for those expecting flagship-level consistency.
