7 Best 4tb Internal Hdd [UK] (2025)

2025 Expert Picks

Last Updated: July 2025

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Last Updated: July 2025

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Best 4tb Internal Hdd

Premium Pick

Crucial BX500 SATA SSD 4TB, 2.5" Internal SSD, Up to 540MB/s, Laptop and Desktop (PC) Compatible, 3D NAND, Dynamic Write Acceleration, Solid State Drive - CT4000BX500SSD101

Crucial

Available in 5 Sizes

9.7

Crucial BX500 SATA SSD 4TB, 2.5" Internal SSD, Up to 540MB/s, Laptop and Desktop (PC) Compatible, 3D NAND, Dynamic Write Acceleration, Solid State Drive - CT4000BX500SSD101

Color: Grey

Dimensions: 2.75 x 3.95 x 0.28 inches

Weight: 0.08 Pounds

Release Date: 09/04/2024

Size: 4TB

Unit Count: 1

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Picked by 397 people today

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

Western Digital

Available in 2 Styles, 6 Sizes

9.5

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

Color: Red

Dimensions: 0.00 x 0.00 x 0.00

Weight: 1.26 pounds

Release Date: 18/12/2024

Seagate

Available in 2 Styles, 7 Sizes

9.5

Seagate IronWolf 4TB, NAS, Internal Hard Drive, CMR, 3.5 Inch, SATA, 6GB/s, 5.400 RPM, 256MB Cache, for RAID Network Attached Storage, Data Rescue Services (ST4000VNZ06)

Color: NAS HDD

Dimensions: 1.03 x 5.79 x 4.01 inches

Weight: 0.00

Release Date: 06/05/2025

Seagate

Available in 2 Styles, 2 Colors, 5 Sizes

9.2

Seagate BarraCuda 4TB, Internal Hard Drive, 3.5 Inch, SATA, 6GB/s, 5.400 RPM, 256MB Cache, for Computer Desktop PC, FFP (ST4000DMZ04)

Color: BarraCuda

Dimensions: 0.79 x 5.79 x 4.00 inches

Weight: 1.21 pounds

Release Date: 06/05/2025

Size: 4TB

Unit Count: 1

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Seagate

9.0

Seagate 4 TB BarraCuda Internal Hard Drive

Color: Brown box.

Dimensions: 0.80 x 5.80 x 4.00 inches

Weight: 0.60 pounds

Release Date: 03/05/2017

Unit Count: 1

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Western Digital

Available in 5 Sizes

8.8

WD Purple 4TB Surveillance 3.5" Internal Hard Drive, AllFrame Technology, 180BT/yr, 256MB Cache, 3 Year Warranty

Color: WD Purple

Dimensions: 1.03 x 5.79 x 4.00 inches

Weight: 1.26 Pounds

Release Date: 10/05/2023

Size: 4TB

Unit Count: 1

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Seagate

Available in 1 Styles, 6 Sizes

8.6

Seagate Skyhawk 4TB, Video Internal Hard Drive, 3.5", SATA, 6Gb/s, 64MB Cache, for DVR/NVR Security Camera System, with Drive Health Management, Data Rescue Services, FFP (ST4000VXZ16)

Color: Silver

Dimensions: 5.78 x 0.80 x 4.00 inches

Weight: 1.32 Pounds

Release Date: 17/05/2022

Size: 4TB

Unit Count: 1

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Our Top Choice

Best 4tb Internal Hdd

Premium Pick

Crucial

Available in 5 Sizes

9.7

Crucial BX500 SATA SSD 4TB, 2.5" Internal SSD, Up to 540MB/s, Laptop and Desktop (PC) Compatible, 3D NAND, Dynamic Write Acceleration, Solid State Drive - CT4000BX500SSD101

Color: Grey

Dimensions: 2.75 x 3.95 x 0.28 inches

Weight: 0.08 Pounds

Release Date: 09/04/2024

Size: 4TB

Unit Count: 1

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2025 Expert Picks

Finding the perfect product can be challenging. That’s why our team invests countless hours in research, breaking down key insights into clear, side-by-side comparisons. Our top pick is based on what matters most to our readers, the most popular products in each category, and a data-driven assessment of all available options. We aim to provide you with all the details you need to make the best choice—quickly and confidently.

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Release Date	Premium Pick Crucial BX500 SATA SSD 4TB, 2.5" Internal SSD, Up to 540MB/s, Laptop and Desktop (PC) Compatible, 3D NAND, Dynamic Write Acceleration, Solid State Drive - CT4000BX500SSD101 Crucial On Amazon	WD Red Plus 4TB NAS 3.5" Internal Hard Drive - 5400 RPM Class, SATA 6 Gb/s, CMR, 256MB Cache Western Digital On Amazon	Popular Seagate IronWolf 4TB, NAS, Internal Hard Drive, CMR, 3.5 Inch, SATA, 6GB/s, 5.400 RPM, 256MB Cache, for RAID Network Attached Storage, Data Rescue Services (ST4000VNZ06) Seagate On Amazon	Best Value Seagate BarraCuda 4TB, Internal Hard Drive, 3.5 Inch, SATA, 6GB/s, 5.400 RPM, 256MB Cache, for Computer Desktop PC, FFP (ST4000DMZ04) Seagate On Amazon	Seagate 4 TB BarraCuda Internal Hard Drive Seagate On Amazon	WD Purple 4TB Surveillance 3.5" Internal Hard Drive, AllFrame Technology, 180BT/yr, 256MB Cache, 3 Year Warranty Western Digital On Amazon	Seagate Skyhawk 4TB, Video Internal Hard Drive, 3.5", SATA, 6Gb/s, 64MB Cache, for DVR/NVR Security Camera System, with Drive Health Management, Data Rescue Services, FFP (ST4000VXZ16) Seagate On Amazon
Deal
Deal	Save 3%	-	-	Save 10%	-	-	-
Color	Grey	Red	NAS HDD	BarraCuda	Brown box.	WD Purple	Silver
Color	Grey	Red	NAS HDD	BarraCuda	Brown box.	WD Purple	Silver
Dimensions	2.75 x 3.95 x 0.28 inches	0.00 x 0.00 x 0.00	1.03 x 5.79 x 4.01 inches	0.79 x 5.79 x 4.00 inches	0.80 x 5.80 x 4.00 inches	1.03 x 5.79 x 4.00 inches	5.78 x 0.80 x 4.00 inches
Dimensions	2.75 x 3.95 x 0.28 inches	0.00 x 0.00 x 0.00	1.03 x 5.79 x 4.01 inches	0.79 x 5.79 x 4.00 inches	0.80 x 5.80 x 4.00 inches	1.03 x 5.79 x 4.00 inches	5.78 x 0.80 x 4.00 inches
Weight	0.08 Pounds	1.26 pounds	0.00	1.21 pounds	0.60 pounds	1.26 Pounds	1.32 Pounds
Weight	0.08 Pounds	1.26 pounds	0.00	1.21 pounds	0.60 pounds	1.26 Pounds	1.32 Pounds
Release Date	2024-04-09T00:00:01Z	2024-12-18T00:00:01Z	2025-05-06T00:00:01Z	2025-05-06T00:00:01Z	2017-05-03T00:00:01Z	2023-05-10T00:00:01Z	2022-05-17T00:00:01Z
Release Date	09/04/2024	18/12/2024	06/05/2025	06/05/2025	03/05/2017	10/05/2023	17/05/2022
Size	4TB	4TB	4TB	4TB	-	4TB	4TB
Size	4TB	4TB	4TB	4TB	-	4TB	4TB
Unit Count	1	1	1	1	1	1	1
Unit Count	1	1	1	1	1	1	1

Trusting our TOP Pick

+1000

Hours of research

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Purchases analyzed

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Brands Compared

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Categories Covered

We leverage expert analysis and advanced technology to evaluate thousands of products. Our unbiased reviews are designed to save you time and ensure you find the best options with confidence.