Samsung
SAMSUNG 870 EVO 4TB 2.5 Inch SATA III Internal SSD (MZ-77E4T0B/AM) , Black
Bottom line: The SAMSUNG 870 EVO 4TB 2.5 Inch SATA III Internal SSD ($1,043.14 on Amazon as of 2026-10-30 16:17 UTC): Hits the SATA III ceiling at 560/530 MB/s sequential read/write; main trade-off: SATA III caps it far below any NVMe M.2 drive's throughput.
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*Price sourced from Amazon.com. Last updated 2026-10-30. Price and availability subject to change.
Pros & Cons
Pros
- ✓ Hits the SATA III ceiling at 560/530 MB/s sequential read/write
- ✓ Up to 2,400 TBW endurance rating for years of daily writes
- ✓ Hardware encryption: AES 256, TCG/Opal v2.0, MS eDrive (IEEE1667)
- ✓ Tested against NAS units, motherboards, and video recorders
Cons
- ✗ SATA III caps it far below any NVMe M.2 drive's throughput
- ✗ 4TB tier carries a steep price premium over 1TB and 2TB
- ✗ 2.5-inch form factor needs a bay and two cables, not an M.2 slot
- ✗ No DRAM-free or PCIe upgrade path; the interface is the hard limit
Manufacturer description
THE SSD ALL-STAR: The latest 870 EVO has indisputable performance, reliability and compatibility built upon Samsung's pioneering technology.Computer Platform:PC.Environmental Specs - Shock : 1,500 G & 0.5 ms (Half sine). Performance - Encryption : Class 0 (AES 256) TCG/Opal v2.0, MS eDrive (IEEE1667). EXCELLENCE IN PERFORMANCE: Enjoy professional level SSD performance with 870 EVO, which maximizes the SATA interface limit to 560/530 MB/s sequential speeds, Accelerates write speeds and maintains long term high performance with a larger variable buffer INDUSTRY DEFINING RELIABILITY: Meet the…
SpecPicks Verdict
SpecPicks scored SAMSUNG 870 EVO 4TB 2.5 Inch SATA III Internal SSD using a rating × review-volume × price-fit model applied to published specs and reviews across the ssds & storage category. Samsung's ssds & storage lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.
Common buyer scenarios for ssds & storage of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.
Frequently Asked Questions
How fast is the Samsung 870 EVO 4TB?
It reaches 560 MB/s sequential read and 530 MB/s sequential write, which is the practical limit of the SATA III interface. A larger variable write buffer helps it hold high speeds through long transfers instead of dropping off partway.
Will this SSD work in my NAS or laptop?
Samsung compatibility-tested the 870 EVO against major chipsets, motherboards, NAS units, and video recording devices. It uses the standard 2.5-inch SATA III form factor, so any bay and SATA data/power connection will accept it.
How long will a 4TB 870 EVO last before it wears out?
The 870 EVO line is rated for up to 2,400 TBW (terabytes written). At that rating you could write hundreds of gigabytes a day for years before approaching the endurance limit.
Does the 870 EVO support hardware encryption for BitLocker?
Yes. It supports Class 0 AES 256, TCG/Opal v2.0, and Microsoft eDrive (IEEE1667), so BitLocker can offload encryption to the drive controller instead of your CPU.
Should I buy this or an NVMe M.2 SSD instead?
Choose the 870 EVO when you need a 2.5-inch SATA drive: older desktops, laptops without M.2 slots, NAS bays, or video recorders. If your board has a free M.2 slot and you want maximum throughput, an NVMe drive will be several times faster.
How much shock can this drive take?
It is rated to 1,500 G at 0.5 ms half-sine. Check the product listing for current warranty terms.
Key Features
- THE SSD ALL-STAR: The latest 870 EVO has indisputable performance, reliability and compatibility built upon Samsung's pioneering technology.Computer Platform:PC.Environmental Specs - Shock : 1,500 G & 0.5 ms (Half sine). Performance - Encryption : Class 0 (AES 256) TCG/Opal v2.0, MS eDrive (IEEE1667).
- EXCELLENCE IN PERFORMANCE: Enjoy professional level SSD performance with 870 EVO, which maximizes the SATA interface limit to 560/530 MB/s sequential speeds, Accelerates write speeds and maintains long term high performance with a larger variable buffer
- INDUSTRY DEFINING RELIABILITY: Meet the demands of every task from everyday computing to 8K video processing, with up to 2,400 TBW.
- MORE COMPATIBLE THAN EVER: 870 EVO has been compatibility tested for major host systems and applications, including chipsets, motherboards, NAS, and video recording devices
Full Specifications
| Size | 4TB |
|---|---|
| Brand | Samsung |
| Color | Black |
| Model | MZ-77E4T0B/AM |
| Warranty | 3 Years Manufacturer |
| UnitCount | 1 |
| ReleaseDate | 2021-01-19T00:00:01Z |
| Manufacturer | Samsung |
| ItemPartNumber | MZ-77E4T0B/AM |
Hardware benchmark data
Ready to buy?
SAMSUNG 870 EVO 4TB 2.5 Inch SATA III Internal SSD (MZ-77E4T0B/AM) , Black is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
*Price sourced from Amazon.com. Last updated 2026-10-30. Price and availability subject to change.
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