PNY CS900
Score: 67/100
Samsung 990 PRO
Score: 81/100Rankings
The Samsung 990 PRO 1TB is a high-performance PCIe 4.0 NVMe SSD delivering up to 7,450 MB/s read and 6,900 MB/s write speeds with strong security features. Its heatsink-less design and limited pSLC cache can limit sustained heavy workloads. Best suited for gamers, content creators, and professionals who need maximum PCIe 4 throughput on desktops or laptops with adequate cooling.
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.
| Attribute | | |
|---|---|---|
1,000 GB | 1,024 GBbest | |
535 MB/s | 7,450 MB/sbest | |
515 MB/s | 6,900 MB/sbest | |
— | 1,200,000 IOPSbest | |
— | 1,550,000 IOPSbest | |
— | 600 TBbest | |
2,000,000 hoursbest | 1,500,000 hours | |
— | 1,024 MBbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Connectivity(1) | ||
Interface | SATA-III | PCIe 4.0 x4 |
Performance(2) | ||
Sequential Read Speed (MB/s) | 535 MB/s | 7450 MB/s |
Sequential Write Speed (MB/s) | 515 MB/s | 6900 MB/s |
Storage(2) | ||
Storage Capacity (GB) | 1000 GB | 1024 GB |
NAND Type | 3D TLC | TLC |
General(1) | ||
Warranty (years) | 3 years | 5 years |
Reliability(1) | ||
Mean Time Between Failures (hours) | 2000000 hours | 1500000 hours |
Design & Build(3) | ||
Form Factor | 2.5-inch | M.2 2280 |
Weight (g) | 45 g | 9.1 g |
Dimensions (L×W×H) (mm) | 100x70x7 mm mm | 80.3×22.1×2.3 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 commend the 990 PRO for its exceptional speed, gaming-optimized random performance, and strong reliability, while noting the smaller DRAM cache and lack of a heatsink as potential drawbacks under heavy sustained loads.
Everyday users praise the drive's blazing speed and security, but note concerns about the smaller DRAM cache and possible throttling without a heatsink.
