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Green printed circuit board with black controller and memory chips, M.2 2280 form factor

Ridata

Ridata A801 500GB NVMe 1.4 PCIe 4.0 x4 M.2 2280 internal SSD

SKU CH-48N7-D341N

A 500 GB NVMe internal SSD with PCIe 4.0 x4 interface delivering up to 5000 MB/s read and 2700 MB/s write speeds

  • Total capacity500 GB
  • Sequential read speedUp to 5,000 MB/s
  • Sequential write speedUp to 2,700 MB/s
  • Interface typePCI-Express 4.0 x4
  • Form factorM.2 2280
  • Product typeInternal Solid State Drive (SSD)
  • Sequential read up to 5000 MB/s for fast load times
  • Sequential write up to 2700 MB/s for quick file saves
  • PCIe 4.0 x4 interface delivers nearly double the bandwidth of PCIe 3.0
  • NVMe 1.4 with HMB technology reduces latency for smoother multitasking
  • M.2 2280 form factor fits laptops and desktops for easy upgrades

500 GB PCIe 4.0 NVMe 1.4 SSD

The Ridata A801 is a 500 GB internal solid-state drive built on the M.2 2280 form factor. It uses the PCIe 4.0 x4 interface and the NVMe 1.4 protocol to deliver high-speed storage for desktops and laptops. The drive targets users who need responsive performance for everyday workloads and content creation tasks.

PCIe 4.0 bandwidth ceiling

Sequential reads reach up to 5000 MB/s and sequential writes up to 2700 MB/s on this model. The PCIe 4.0 x4 link provides nearly double the bandwidth of PCIe 3.0, so the drive can sustain those speeds only when the host platform supplies a compatible PCIe 4.0 slot. On a PCIe 3.0 system the same drive will be limited to the older interface’s lower throughput ceiling.

M.2 2280 with HMB and SLC cache

The single-sided M.2 2280 module fits standard motherboard and laptop slots without extra cables or brackets. Host Memory Buffer technology lets the controller borrow a portion of system DRAM for mapping tables, reducing latency during mixed workloads. An onboard SLC cache absorbs burst writes before data is folded into the 3D NAND array, keeping performance consistent during heavy file transfers.

How it compares

Measured against everything we stock in Internal NVMe & SATA SSDs, at today’s prices. Recalculated every night.

Price $66.99
Cheaper than about 84% of the 1,994 comparable items (median $180.49).
Total capacity 500 GB
Lower than about 70% of the 1,368 comparable items (median 1 TB).
Sequential read speed Up to 5,000 MB/s
Higher than about 70% of the 1,180 comparable items (median 2,400 MB/s).
Price per TB $133.98 per TB
Cheaper than about 65% of the 1,362 comparable items (median $165.50 per TB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameRiDATA
Product lineA801
Model nameA801
Part numberRDT-A801-500G
Total capacity500 GB
Product typeInternal Solid State Drive (SSD)
Intended useIndustrial
Performance
Sequential read speedUp to 5,000 MB/s
Sequential write speedUp to 2,700 MB/s
Storage
NAND flash typePCIe
Connectivity
Connection protocolNVMe 1.4
Ports & slots
Interface typePCI-Express 4.0 x4
Size & build
Form factorM.2 2280
In the box
Included itemsSLC Cache NVMe 1.4 PCIe Gen 4 × 4 M.2 2280 SSD Internal Solid State Drive

Questions about this item

Should I pick the 500 GB or 1 TB version of the A801 for my workload?

The 500 GB model delivers up to 5000 MB/s read and 2700 MB/s write, while the 1 TB model keeps the same 5000 MB/s read but reaches 4800 MB/s write, so choose the larger capacity if sustained write throughput matters.

What does the 5000 MB/s read figure actually deliver in my system?

That sequential read ceiling applies to large, continuous transfers on a PCIe 4.0 x4 slot; everyday mixed workloads will run lower, but the NVMe 1.4 protocol and Host Memory Buffer help keep latency down during multitasking.

Does the PCIe 4.0 x4 interface limit performance on a PCIe 3.0 motherboard?

Yes — the drive will negotiate down to PCIe 3.0 x4, capping sequential throughput at roughly half the 5000 MB/s read and 2700 MB/s write potential.

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