1
Intel SSD 750
400GB, 800GB, 1.2TB
Best 400GB PCIe 3.0 DRAM SSDs
400GBPCIe 3.0DRAM
There are 4 400GB PCIe 3.0 DRAM SSDs in our database — each linked via an Amazon search on its part number. The fastest is the Synology SNV3400 at 3100 MB/s read, and the highest-rated for endurance is the Corsair NEUTRON NX500 (2793 TBW). Sequential reads across the group span 2400–3100 MB/s.
Why this configuration
A 400GB PCIe 3.0 DRAM SSD is an affordable NVMe step up from SATA. Gen3 is roughly six times SATA's throughput yet often costs little more, making it the easy default for a first NVMe drive or a laptop that only supports Gen3.
Usually chosen for: budget builders, laptop upgraders and anyone leaving SATA behind.
Good fit: workstation and creative loads that hammer random I/O.
Ranked list
Ranked by tier, then link type, then sequential read. Drives we hold a product link for show a price button; the rest open an Amazon search on the manufacturer part number. Stock and prices are not shown here — they change too often.
2
Synology SNV3400
400GB
3
Synology SNV3500
400GB
4
Corsair NEUTRON NX500
400GB, 800GB, 1.6TB
The parts, explained
PCIe 3.0 x4 reaches about 3,500 MB/s — plenty for everyday use and gaming, and cheaper than Gen4.
An onboard DRAM cache keeps the flash mapping table on the drive, holding random performance steady under sustained load.
Common questions
How do the links to Amazon work here?
0 of the 4 drives listed have a direct product link; for the rest we link an Amazon search on the manufacturer part number, which lands on the right listing. We deliberately don't display stock or prices on this page — check both on Amazon, they change constantly.