Updated: 16 Feb 2025

hard drive hdd 4tb internals

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Updated: 16 Feb 2025

#1

Best Choice
Western Digital 4TB WD Black Gaming Internal Hard Drive HDD - 7200 RPM, SATA 6 Gb/s, 256 MB Cache, 3.5" - WD4006FZBX

9.8

Western Digital

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Main highlights

Performance storage available in up to 10TB(1) capacities | (1) 1GB = 1 billion bytes and 1TB = 1 trillion bytes. Actual user capacity may be less depending on operating environment.

Desktop performance gaming hard drive

Designed for gamers, system builders, and creative professionals.
#2

Value for Money
Seagate Skyhawk 4TB Video Internal Hard Drive HDD – 3.5 Inch SATA 6Gb/s 64MB Cache for DVR NVR Security Camera System with Drive Health Management and in-House Rescue Services (ST4000VXZ16/016)

9.5

Seagate

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Why we love it

Optimized for video storage, ensuring smooth security footage.

Supports high workloads, ideal for extensive camera systems.

Built-in sensors maintain performance in multi-bay setups.

Main highlights

Video Optimized Storage
Built for video DVR and NVR security camera systems, SkyHawk delivers video-optimized storage, supporting workloads up to 180TB/year with zero dropped frames.

Ideal for Security Systems
Perfect for multi-bay NVR setups, SkyHawk drives maintain performance with built-in RV sensors, lower power consumption, and scalable storage options.

Highly Reliable Performance
Customers praise the reliability and performance of Seagate SkyHawk drives, noting long-term use without issues, quiet operation, and efficient temperature management.
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Our AI-powered platform ranks products using multiple weighted factors from millions of products and user reviews across the web, providing the most valuable and real data. Higher scores rank first.
#3
Seagate BarraCuda 4TB Internal Hard Drive HDD – 3.5 Inch Sata 6 Gb/s 5400 RPM 256MB Cache For Computer Desktop PC – Frustration Free Packaging ST4000DMZ04/DM004

9.3

Seagate

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Main highlights

The go to SATA hard drive solution for nearly every PC application from music to video to photo editing to PC gaming

Store more, compute faster, and do it confidently with the proven reliability of BarraCuda internal hard drives

Build a powerhouse gaming computer or desktop setup with a variety of capacities and form factors
#4
Seagate IronWolf 4TB NAS Internal Hard Drive CMR 3.5 Inch SATA 6Gb/s 5400 RPM 64MB Cache for RAID Network Attached Storage Rescue Services (ST4000VNZ06/006)

9.2

Seagate

-19%

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Why we love it

Ideal for multi-user NAS setups.

Integrated health management system.

Quiet operation during idle.

Main highlights

High Capacity and Reliability
Offers up to 16TB storage with 1M hours MTBF for durability.

Perfect for NAS Environments
Designed for up to 8-bay NAS systems, enhancing performance.

Praised for Reliable Performance
Customers appreciate its reliability in RAID configurations.

-19%
#5
Western Digital 4TB WD Blue PC Internal Hard Drive HDD - 5400 RPM, SATA 6 Gb/s, 256 MB Cache, 3.5" - WD40EZAX

8.9

Western Digital

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Main highlights

Western Digital quality and reliability

Reliable everyday computing

Free Acronis True Image WD Edition cloning software
#6
Western Digital 4TB WD Red Plus NAS Internal Hard Drive HDD - 5400 RPM, SATA 6 Gb/s, CMR, 256 MB Cache, 3.5" -WD40EFPX

8.6

Western Digital

-16%

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Why we love it

Ideal for NAS and business use.

Reliable performance in 24/7 environments.

Highly praised for reliability.

Main highlights

Key Features and Benefits
4TB capacity, 5400 RPM, 256MB cache, SATA 6 Gb/s, CMR.

Ideal Use Cases
Perfect for NAS systems and small to medium business environments.

Praised Feature in Reviews
Reliability and performance in continuous operation setups.

-16%
#7
Western Digital 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD43PURZ

8.4

Western Digital

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Main highlights

WD AllFrame technology delivers optimizations for write-intensive, low bit-rate, high stream-count workloads typical to mainstream surveillance applications

Supports up to 180 TB/yr workload rate(3) | (3) Workload Rate is defined as the amount of user data transferred to or from the hard drive. Workload Rate is annualized (TB transferred ✕ (8760 / recorded power-on hours)). Workload Rate will vary depending on your hardware and software components and configurations.

Engineered for mainstream surveillance systems
#8
Seagate Exos 7E8 4TB Internal Hard Drive Enterprise HDD – 3.5 Inch 512n SATA 6Gb/s, 7200RPM, 256MB Cache – Frustration Free Packaging (ST4000NM000A) (Renewed)

8.3

Seagate
#9
Western Digital 4TB WD Blue PC Internal Hard Drive HDD - 5400 RPM, SATA 6 Gb/s, 256 MB Cache, 3.5" - WD40EZAZ

8.0

Western Digital

-25%

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Why we love it

WD quality and reliability

Easy to set up

Lots of storage

Main highlights

Key Features
Offers reliable everyday computing with Western Digital quality, free Acronis True Image cloning software, and massive capacity up to 6TB.

Ideal Use Cases
Perfect for personal use, especially for data backups, large multimedia file storage, and upgrading computer systems efficiently.

Customer Reviews Summary
Most praised for its reliability and ease of use, particularly highlighting the seamless data transfer and cloning process.

-25%
#10
Western Digital 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 64 MB Cache, 3.5" - WD40PURZ

7.7

Western Digital

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Why we love it

Reliable 24/7 surveillance with AllFrame technology.

Supports up to 64 HD cameras seamlessly.

Easy plug-and-play installation and compatibility.

Main highlights

24/7 Surveillance Ready
Built for 24/7 surveillance, featuring AllFrame technology for better performance, supports up to 64 HD cameras, engineered for compatibility, with a 3-year manufacturer’s limited warranty.

Ideal for Security Systems
Perfect for NVRs, TiVo Roamio, and Ubiquiti UDM Pro, designed to handle continuous video recording and playback without interruption or failure.

Highly Reliable Performance
Customers consistently praise the drive's reliability, ease of installation, and compatibility with various security systems, noting its excellent performance even in demanding environments.

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hard drive hdd 4tb internals

Western Digital 4TB WD Black Gaming Internal Hard Drive HDD - 7200 RPM, SATA 6 Gb/s, 256 MB Cache, 3.5" - WD4006FZBX

9.8

Main highlights

Seagate Skyhawk 4TB Video Internal Hard Drive HDD – 3.5 Inch SATA 6Gb/s 64MB Cache for DVR NVR Security Camera System with Drive Health Management and in-House Rescue Services (ST4000VXZ16/016)

9.5

Why we love it

Main highlights

Seagate BarraCuda 4TB Internal Hard Drive HDD – 3.5 Inch Sata 6 Gb/s 5400 RPM 256MB Cache For Computer Desktop PC – Frustration Free Packaging ST4000DMZ04/DM004

9.3

Main highlights

Seagate IronWolf 4TB NAS Internal Hard Drive CMR 3.5 Inch SATA 6Gb/s 5400 RPM 64MB Cache for RAID Network Attached Storage Rescue Services (ST4000VNZ06/006)

9.2

Why we love it

Main highlights

Western Digital 4TB WD Blue PC Internal Hard Drive HDD - 5400 RPM, SATA 6 Gb/s, 256 MB Cache, 3.5" - WD40EZAX

8.9

Main highlights

Western Digital 4TB WD Red Plus NAS Internal Hard Drive HDD - 5400 RPM, SATA 6 Gb/s, CMR, 256 MB Cache, 3.5" -WD40EFPX

8.6

Why we love it

Main highlights

Western Digital 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD43PURZ

8.4

Main highlights

Seagate Exos 7E8 4TB Internal Hard Drive Enterprise HDD – 3.5 Inch 512n SATA 6Gb/s, 7200RPM, 256MB Cache – Frustration Free Packaging (ST4000NM000A) (Renewed)

8.3

Western Digital 4TB WD Blue PC Internal Hard Drive HDD - 5400 RPM, SATA 6 Gb/s, 256 MB Cache, 3.5" - WD40EZAZ

8.0

Why we love it

Main highlights

Western Digital 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 64 MB Cache, 3.5" - WD40PURZ

7.7

Why we love it

Main highlights

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