SAS vs SATA vs NVMe – What's the Difference and What Should You Buy?

Amazon US · exact models

Models and offers for this guide

8 models

Compare capacity, specifications and condition. Confirm compatibility and the selected seller before ordering. As an Amazon Associate I earn from qualifying purchases.

Models and offers for this guide
Model & capacity	Fit & specifications	US offer
Lexar NM790LNM790X001T-RNNNU1TB · New	PCIe 4.0 x4 / NVMe1000 TBW Check the slot, protocol and heatsink clearance; compare the exact-model endurance rating.	$196.05$196.05/TBView on Amazon ↗ — LNM790X001T-RNNNU, newChecked Sep 14, 2026 05:06 UTC
Samsung 860 PROMZ-76P1T01.024TB · New	SATA 6 Gb/s1200 TBW Check the slot, protocol and heatsink clearance; compare the exact-model endurance rating.	$594.45$580.52/TBView on Amazon ↗ — MZ-76P1T0, newChecked Sep 14, 2026 14:25 UTC
Seagate IronWolfST4000VN0084TB · New	CMR · SATA 6 Gb/s5900 RPM · 180 TB/year workload 4TB per bay. Check usable capacity after RAID and your NAS compatibility list.	$225.00$56.25/TBView on Amazon ↗ — ST4000VN008, newChecked Sep 14, 2026 14:28 UTC
Western Digital WD Red PlusWD60EFPX6TB · New	CMR · SATA 6 Gb/s5400 RPM · 180 TB/year workload 6TB per bay. Check usable capacity after RAID and your NAS compatibility list.	$328.99$54.83/TBView on Amazon ↗ — WD60EFPX, newChecked Sep 14, 2026 14:25 UTC
Western Digital WD GoldWD8005FRYZ8TB · New	CMR · SATA 6Gb/s7200 RPM · 550 TB/year workload Bulk storage candidate. Check sector format, cooling and the warranty provider.	$444.99$55.62/TBView on Amazon ↗ — WD8005FRYZ, newChecked Sep 14, 2026 14:24 UTC
Seagate Exos X16ST10000NM002G10TB · New	SAS 12 Gb/s7200 RPM Requires a compatible SAS controller/backplane; not a SATA-only NAS option.	$380.99$38.10/TBView on Amazon ↗ — ST10000NM002G, newChecked Sep 14, 2026 13:02 UTC
Toshiba MG09MG09ACA14TE14TB · New	SATA 6 Gb/s7200 RPM · 550 TB/year workload Bulk storage candidate. Check sector format, cooling and the warranty provider.	$962.88$68.78/TBView on Amazon ↗ — MG09ACA14TE, newChecked Sep 14, 2026 14:26 UTC
Seagate Exos X16ST16000NM004G16TB · New	SAS 12 Gb/s7200 RPM Requires a compatible SAS controller/backplane; not a SATA-only NAS option.	$690.52$43.16/TBView on Amazon ↗ — ST16000NM004G, newChecked Sep 14, 2026 14:27 UTC

Specifications: linked manufacturer model pages. Selection covers different capacities and families; it is not a reliability ranking. Prices are per listed drive; Amazon’s price and availability at purchase apply.

Browse SATA & NVMe prices →

1. SATA

The most common interface for home and SMB storage. Tops out at ~550 MB/s — more than sufficient for HDDs and most everyday SSDs.

Most common interface

Up to 6 Gb/s (~550 MB/s)

Very affordable drives

Perfect for home NAS

2. SAS

Enterprise-grade interface with dual-port support and higher reliability. Requires expensive HBA controllers — overkill for home use.

Dual-port redundancy

Higher reliability ratings

Expensive HBA required

Not for home use

3. NVMe

PCIe-based protocol with speeds up to 7,000 MB/s on Gen 4. Ideal for OS drives, gaming, and video editing. Much higher cost per TB than SATA.

Gen 4: up to 7,000 MB/s

Ideal for OS & gaming

Higher cost per TB

Not for bulk storage

Quick Decision Guide

Use Case	Recommended Interface
Home PC	SATA or NVMe
Gaming	NVMe
NAS	SATA (CMR HDD)
Video Editing	NVMe
Enterprise Server	SAS
Cold Storage	SATA HDD

Frequently Asked Questions

What is faster, SATA or NVMe?

NVMe is significantly faster. SATA tops out at ~550 MB/s. NVMe Gen 4 reaches ~7,000 MB/s — roughly 12x faster for sequential reads.

Do I need SAS for a home NAS?

No. SAS requires expensive HBAs and cabling. For home and SMB NAS, SATA CMR drives are the correct choice.

Can I use NVMe in a NAS?

Yes, but usually only for caching. Most NAS enclosures support M.2 NVMe for SSD caching alongside SATA HDDs for bulk storage.

Is SATA becoming obsolete?

Not for HDDs. SATA remains the standard interface for hard drives in NAS and storage-focused builds. For SSDs, NVMe is increasingly dominant in new systems.

Ready to find the best deal?

Compare Amazon US offers by capacity, condition and price per TB.

Browse SATA & NVMe prices

Related Guides

CMR vs SMR – The Truth

Which HDD recording tech should you choose?

How to Choose a Storage Drive

Complete 2026 buying guide.