Samsung vs WD_BLACK: Nvme SSDs Compared by Specs
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You are comparing a samsung vs wd black nvme SSD, but the data reveals a key distinction: one is SATA and one is NVMe. The Samsung 860 EVO uses the older SATA III interface, while the WD_BLACK SN850 uses modern Gen4 PCIe. They differ in form factor, capacity, and speed. This guide explains how these spec differences affect your setup. You need to match the drive to your motherboard and use case.
Key differences
| Aspect | Samsung 860 EVO 500GB SATA SSD | WD_BLACK SN850 2TB Gen4 NVMe SSD |
|---|---|---|
| Interface | SATA III | Gen4 PCIe |
| Form Factor | 2.5 Inch | M.2 2280 |
| Max Read Speed | 550MB/s | 7,000 MB/s |
| Max Write Speed | 520MB/s | 5,300 MB/s |
| NAND Type | V-NAND | 3D NAND |
| Warranty | 5-year limited | not listed |
Which one should you choose?
Choose Samsung 860 EVO 500GB SATA SSD if
- You have a desktop or laptop with only SATA ports.
- You need a 2.5-inch drive for older chassis compatibility.
- You prioritize data encryption and established reliability over raw speed.
Choose WD_BLACK SN850 2TB Gen4 NVMe SSD if
- You need Gen4 PCIe speeds for gaming or heavy file transfers.
- Your motherboard has an M.2 slot and supports NVMe drives.
- You want higher capacity options like 2TB in a compact form factor.
Verdict: The Samsung 860 EVO suits users with older systems or those requiring standard 2.5-inch SATA connectivity. The WD_BLACK SN850 is the choice for modern gaming PCs and workstations that support NVMe drives. Your decision depends entirely on your motherboard's available ports and performance needs.
Samsung vs WD_BLACK NVMe SSD Specs
Interface technology
The Samsung 860 EVO relies on the SATA III interface, which caps data transfer rates at 6 Gb/s. This is an older standard designed for traditional hard drive replacements. In contrast, the WD_BLACK SN850 uses Gen4 PCIe technology. This modern interface allows for significantly higher bandwidth and faster communication between the drive and your system. PCIe Gen4 is the current standard for high-performance internal storage, offering a much wider data pipeline than the legacy SATA connection found in the Samsung model.
Transfer speeds
Speed differences are stark between these two drives. The Samsung 860 EVO offers sequential read speeds up to 550MB/s and write speeds up to 520MB/s. These are typical maximums for SATA SSDs. The WD_BLACK SN850 delivers sequential read speeds up to 7,000 MB/s. While the specific write speed for the 2TB model is not explicitly listed in the key specs, the 1TB model reaches 5,300MB/s. This means the WD_BLACK drive is roughly ten times faster in sequential reads than the Samsung option, which matters for large file transfers.
Form factor
Physical dimensions and mounting styles differ significantly. The Samsung 860 EVO is a 2.5-inch drive with a height of 0.27 inches. It connects via SATA cables and requires a specific bay or mounting bracket. The WD_BLACK SN850 is an M.2 2280 drive. It plugs directly into an M.2 slot on the motherboard, measuring 3.15 inches in length and only 0.09 inches in height. The M.2 form factor saves space and eliminates cable clutter, making it ideal for modern motherboards, laptops, and consoles that support NVMe slots.
NAND type
Both drives utilize advanced flash memory technology, but the specific implementations differ. The Samsung 860 EVO is powered by Samsung V-NAND technology. This vertical stacking method allows for higher density and improved efficiency compared to planar NAND. The WD_BLACK SN850 uses 3D NAND technology as well. While both employ 3D stacking techniques to increase capacity and performance, the Samsung drive emphasizes its proprietary V-NAND architecture. The WD_BLACK drive highlights its 3D NAND construction alongside its high-speed controller. Both represent modern storage media standards.
Security features
Data protection options vary between the two models. The Samsung 860 EVO includes AES 256-bit hardware-based encryption. It is compliant with TCG Opal and IEEE 1670 standards, which is useful for enterprise or security-conscious users who need drive-level encryption without software overhead. The WD_BLACK SN850 does not list specific hardware encryption standards in its provided specifications. It focuses on performance and gaming optimization rather than explicit security protocols in the brief data. If hardware encryption is a priority, the Samsung drive offers clear documented support for these standards.
Use case focus
Each drive targets different user needs based on its specifications. The Samsung 860 EVO is designed for everyday computing and general compatibility. It supports a wide range of operating systems, including Windows, Mac OSX, and Linux, making it a versatile choice for standard desktops and older systems. The WD_BLACK SN850 is explicitly optimized for next-gen gaming. It is not intended for NAS or server environments. Its high speeds and M.2 form factor cater to gamers and content creators who need rapid load times and high IOPS for demanding applications.
Which SSD matches your system and needs?
Users with older desktops or laptops lacking M.2 slots
The Samsung 860 EVO uses a standard 2.5-inch SATA III interface. This form factor fits into nearly every computer built in the last decade. You get reliable sequential read speeds up to 550MB/s and write speeds up to 520MB/s. It is a straightforward upgrade for systems that do not support modern NVMe drives.
Gamers seeking maximum load times and high throughput
The WD_BLACK SN850 leverages Gen4 PCIe technology for significantly higher performance. It offers sequential read speeds up to 7,000MB/s and reaches 1,000,000 IOPS. This speed reduces game loading times and handles large asset streams efficiently. The 2TB capacity provides ample space for modern game libraries and the operating system.
Users needing enterprise-grade data security and reliability
The Samsung 860 EVO includes hardware-based AES 256-bit encryption. It complies with TCG Opal and IEEE 1670 standards for secure data protection. With a mean time between failures rated at 1.5 million hours, it offers strong reliability metrics. This makes it a solid choice for users prioritizing data integrity and long-term stability.
The products compared
Samsung 860 EVO 500GB SATA SSD
Best for: upgrading older SATA-based desktops and laptops
- Storage Capacity
- 500GB
- Interface
- SATA III
- Form Factor
- 2.5 Inch
- Max Read Speed
- 550MB/s
- Max Write Speed
- 520MB/s
- Dimensions
- 3.94 × 2.76 × 0.27 inches
View on Amazon: Samsung 860 EVO 500GB SATA SSD Affiliate link
The Samsung 860 EVO is a 2.5-inch SATA III SSD with 500GB of storage. It offers sequential read speeds up to 550MB/s and write speeds up to 520MB/s. This drive uses V-NAND technology for reliable everyday computing. It fits standard desktops and laptops. You get AES 256-bit hardware encryption for data security. It is a practical upgrade for older systems using SATA connections.
Pros
- Sequential read speeds up to 550MB/s
- AES 256-bit hardware-based encryption
- 2.5-inch form factor fits most systems
- 5-year limited warranty
Cons
- SATA III interface limits speed compared to NVMe
- 500GB capacity is smaller than modern 2TB options
- No included mounting screws or cables
Good fit if
- You need to upgrade a desktop or laptop with a SATA port
- You want reliable storage for everyday computing tasks
- You prefer established V-NAND technology for data integrity
Skip if
- You require the high speeds of NVMe PCIe drives
- You need more than 500GB of storage space
- You are building a modern PC with only M.2 slots
Verdict: The Samsung 860 EVO 500GB SATA SSD is a solid choice for users upgrading older systems via SATA. It delivers dependable speeds and security for standard computing needs. It does not suit those seeking NVMe performance.
WD_BLACK SN850 2TB Gen4 NVMe SSD
Best for: high-speed gaming storage
- Storage Capacity
- 2TB
- Interface
- Gen4 PCIe
- Form Factor
- M.2 2280
- Max Read Speed
- 7,000 MB/s
- Compatibility
- Gaming
- NAND Type
- 3D NAND
View on Amazon: WD_BLACK SN850 2TB Gen4 NVMe SSD Affiliate link
The WD_BLACK SN850 is a 2TB NVMe SSD using Gen4 PCIe and 3D NAND. It delivers up to 7,000 MB/s read speeds and 1,000,000 IOPS. This drive fits the M.2 2280 form factor. It includes the WD_BLACK Dashboard software for customization. It is built for high-performance gaming systems.
Pros
- Up to 7,000 MB/s sequential read speed
- 1,000,000 IOPS for fast load times
- 2TB storage capacity for large game libraries
- Includes WD_BLACK Dashboard software
Cons
- Not intended for NAS or server environments
- Requires M.2 2280 slot
- Sold without heatsink in this specific variation
Good fit if
- You need top-tier Gen4 speeds for gaming
- You have an M.2 2280 slot available
- You want software control over drive settings
Skip if
- You are building a NAS or server
- You only have SATA III slots
- You need a 2.5-inch form factor
Verdict: WD_BLACK SN850 2TB NVMe SSD delivers Gen4 speeds for gaming. It suits players who need fast load times and have an M.2 2280 slot.
Specifications side by side
| Spec | Samsung 860 EVO 500GB SATA SSD | WD_BLACK SN850 2TB Gen4 NVMe SSD |
|---|---|---|
| Storage Capacity | 500GB | 2TB |
| Interface | SATA III | Gen4 PCIe |
| Form Factor | 2.5 Inch | M.2 2280 |
| Max Read Speed | 550MB/s | 7,000 MB/s |
| Max Write Speed | 520MB/s | not stated |
| Compatibility | not stated | Gaming |
| NAND Type | not stated | 3D NAND |
| Size | 500GB | 2TB |
| Dimensions | 3.94 × 2.76 × 0.27 inches | 3.15 × 0.87 × 0.09 inches |
| Weight | 1.76 ounces | not stated |
| Color | Black | Black |
| Model | MZ-76E500B/AM | WDS200T1X0E |
Frequently asked questions
Can I use the WD_BLACK SN850 in an old desktop with only SATA ports?
No. The WD_BLACK SN850 uses an M.2 2280 form factor and NVMe interface. It requires a motherboard with a compatible M.2 slot and Gen4 PCIe support. It will not fit into or connect to older systems that only have SATA III ports. You must check your motherboard specifications before purchasing this drive.
Is the Samsung 860 EVO faster than the WD_BLACK SN850?
No. The Samsung 860 EVO is a SATA III drive limited by that interface's bandwidth. The WD_BLACK SN850 is a Gen4 NVMe drive designed for significantly higher speeds. The SN850 is built for high-speed gaming storage and modern performance needs, while the 860 EVO is intended for standard computing on older hardware.
What size is the Samsung 860 EVO?
It is a 2.5-inch form factor drive. The specific dimensions are 3.94 inches in length, 2.76 inches in width, and 0.27 inches in height. It weighs 1.76 ounces. This standard size allows it to fit into most desktops and laptops that have available 2.5-inch drive bays.
Does the WD_BLACK SN850 come with a warranty?
The provided data does not mention warranty terms. It lists the model number WDS200T1X0E and specifies a 2TB size. For warranty details, you should check the manufacturer's website or the product packaging. The data focuses on physical specifications and interface compatibility rather than service agreements.
Is the WD_BLACK SN850 suitable for general office work?
It is optimized for high-speed gaming storage. While it will work for office tasks, its Gen4 NVMe interface is designed for faster load times and heavy data throughput. If you are upgrading an older system without M.2 slots, the Samsung 860 EVO is the more appropriate choice for standard computing needs.
What is the capacity of the Samsung 860 EVO listed here?
This specific model is the 500GB version. The model number is MZ-76E500B/AM. It uses 3D NAND technology, as indicated by the general category, though the specific NAND type is not listed for this item in the data. It is designed for users needing reliable storage for standard computing.
Can I install the WD_BLACK SN850 in a laptop?
Yes, if your laptop has an M.2 2280 slot. The drive is 3.15 inches long and 0.87 inches wide. It is not a 2.5-inch drive, so it will not fit in bays designed for larger SATA drives. You must verify that your laptop supports NVMe drives and has the correct physical slot available.