Western Digital 120GB WD Green Internal PC SSD Solid State Drive - SATA III 6 Gb/s, 2.5"/7mm, Up to 550 MB/s - WDS120G2G0A
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AI Verdict
A 120GB SATA III SSD with up to 550 MB/s read, designed for basic OS upgrades in older laptops or desktops.
This 120GB SATA III SSD is a situational fit, offering a noticeable speed upgrade over traditional hard drives for very basic computing tasks. Its small capacity and entry-level performance mean it's quickly outgrown by modern software and user demands.
If you need more than just a basic boot drive, look for SSDs with at least 500GB capacity and a dedicated DRAM cache.
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Pros
- SLC (single-level cell) caching boosts write performance for everyday tasks.
- Shock-resistant and WD F.I.T. Lab certified for compatibility and reliability.
- Ultra low power-draw helps extend laptop PC battery life.
- Includes a 3-year limited warranty for peace of mind.
- Free, downloadable WD SSD Dashboard allows easy drive status monitoring.
Cons
- 120GB capacity is quickly insufficient for modern operating systems and applications.
- Reported write speeds can be as low as 80 MB/s, significantly lower than the advertised read speed.
- Lacks a dedicated DRAM cache, which can impact sustained write performance and longevity.
- Some users reported read errors or drive failures within two years of use.
Dimension Scores
While sequential read speeds reach 550 MB/s, reported write speeds can drop significantly to 80-250 MB/s, which is below average for SATA SSDs.
It's WD F.I.T. Lab certified and includes a 3-year warranty, but some users reported read errors and early failures, suggesting inconsistent long-term reliability.
120GB is a very small capacity for modern computing, barely enough for an operating system and a few essential applications.
The 2.5-inch form factor and SATA III interface offer near-universal compatibility with most laptop and desktop PCs.
Best For
- Upgrading an old laptop or desktop PC still using a mechanical hard drive.
- Use as a boot drive for a lightweight operating system.
- Secondary storage for non-critical files or very small, older games.
- Budget-conscious users needing a minimal speed boost for basic computing.
Not Recommended For
- Gamers needing space for modern titles (which can exceed 100GB each).
- Users performing frequent, large file transfers or heavy data writing tasks.
- Main storage for power users or those with extensive software libraries.
- Critical data storage without robust backup solutions due to reliability concerns.
Watch Out For
- 120GB capacity fills up fast, especially with modern operating systems and applications.
- Reported write speeds can be as low as 80 MB/s, significantly lower than the advertised read speed.
- Some users experienced read errors or drive failures within two years of use.
- The drive lacks a dedicated DRAM cache, which can affect sustained write performance and longevity.
Full Specifications
| RAM | 120 GB |
| ASIN | B076XWDN6V |
| Brand | Western Digital |
| Color | Multicolor |
| Series | WDS120G2G0A |
| Hard Drive | 120 GB Solid State Hard Drive |
| Item Weight | 1.4 ounces |
| Manufacturer | Western Digital |
| Special Feature | Shock Resistant |
| Flash Memory Size | 120 |
| Hardware Platform | Mac, PC |
| Installation Type | Internal Hard Drive |
| Item model number | WDS120G2G0A |
| Compatible Devices | SATA III / laptop and desktop PCs, |
| Product Dimensions | 3.96 x 2.75 x 0.28 inches |
| Hard Disk Interface | SATA 6 GB/s |
| Computer Memory Type | Unknown |
| Hard Drive Interface | SATA 6 GB/s |
| Hard Disk Description | Solid State Hard Drive |
| Hard Disk Form Factor | 2.5 Inches |
| Item Dimensions LxWxH | 3.96 x 2.75 x 0.28 inches |
| Connectivity Technology | SATA |
| Digital Storage Capacity | 120 GB |
| Hard Drive Rotational Speed | 2 RPM |
| Is Discontinued By Manufacturer | No |
What Buyers Say
Users frequently report that this 120GB WD Green SSD is a straightforward and noticeable upgrade for older systems still running mechanical hard drives, significantly improving boot times and general responsiveness. However, the small 120GB capacity is a constant point of contention, with many finding it fills up too quickly. There are also scattered reports of read errors or drive failures occurring within a couple of years, raising some concerns about its long-term consistency.
“Look, I just needed something cheap to get my old clunker of a laptop running Windows 10 without freezing every five minutes, and this did the trick. But seriously, 120GB? It's already almost full just with Windows and Chrome, so don't expect to install anything else on it.”
Common Praise
- Easy to install in older laptops and desktops.
- Provides a significant speed boost compared to traditional HDDs.
- Low power consumption, which is beneficial for laptop battery life.
- The WD SSD Dashboard software is useful for monitoring drive health.
Common Complaints
- The 120GB capacity is too small for modern operating systems and applications.
- Some users experienced read errors or drive failures relatively early on.
- Performance isn't as fast as higher-end SSDs, especially for sustained writes.
- Lacks a DRAM cache, which can be a concern for performance and longevity.
Ownership Tips
- The 120GB capacity becomes a bottleneck almost immediately, requiring constant file management.
- Initial speed boost is noticeable, but sustained performance can feel sluggish during large file operations due to the lack of DRAM cache.
- Monitoring the drive's health with the WD SSD Dashboard is a good habit, especially given some user reports of early issues.
- It runs cool and quiet, which is a plus for laptop users.
Frequently Asked Questions
Is this SSD good for gaming?
No, 120GB is too small for most modern games, which often require 100GB or more per title. You'll run out of space almost immediately.
Will this make my old laptop faster?
Yes, replacing a mechanical hard drive with this SSD will significantly improve boot times and application loading speeds on an old laptop.
What is the actual write speed?
While read speeds are up to 550 MB/s, reported write speeds for this model can be as low as 80 MB/s to 250 MB/s, depending on the task.
Does this drive have a DRAM cache?
No, WD Green SSDs typically lack a dedicated DRAM cache, which can impact sustained write performance and overall endurance.
Is it compatible with my desktop PC?
Yes, its 2.5-inch form factor and SATA III 6 Gb/s interface make it compatible with most desktop and laptop PCs.
Buying Guide
When you're looking at an SSD like this, you need to understand that 120GB is really just enough for your operating system and maybe one or two small programs. Don't expect to store your entire photo collection or a bunch of games on it. The 'SATA III' part means it connects like an old hard drive, so it's super compatible with older computers, but it won't be as fast as newer 'NVMe' SSDs.
capacity (120 GB)
This is how much data the drive can hold. Think of it like a small cup; 120GB fills up incredibly fast with today's software, so it's mostly for your computer's brain (the operating system) and not much else.
interface (SATA 6 GB/s)
This is how the drive connects to your computer. SATA is like a standard highway, compatible with almost all older PCs. It's fast enough for everyday tasks but slower than the newer, super-fast NVMe connections.
drive_type (Solid State Hard Drive)
Unlike old spinning hard drives, SSDs have no moving parts, making them much faster, quieter, and more resistant to drops. It's like upgrading from a bicycle to a scooter for speed and durability.
Alternatives
If you need more storage for applications or games, look for SATA SSDs with at least 500GB or 1TB capacity. For significantly faster performance, especially in newer systems, consider an NVMe SSD.
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