KCMYXRUG3T84: Kioxia CM7-R 3.84TB PCIe Gen5 NVMe U.3 2.5-Inch Read-Intensive Enterprise SSD
Also listed as: KCMYXRUG3T840, CM7-R 3.84TB, KCMY1RUG3T84 · made by Kioxia
The Kioxia CM7-R 3.84TB solid state drive unlocks PCIe Gen5 transfer rates for dense enterprise virtualization, online transaction processing, and software-defined all-flash architectures. Delivering up to 14,000 MB/s sequential read and 2,700,000 random read IOPS, it doubles the bandwidth of previous Gen4 drives. When sourcing second-hand units, verify host bus adapter PCIe 5.0 compatibility, inspect thermal pads on the 15mm enclosure, and check SMART percentages to confirm adequate remaining write lifespan.
Specifications
| Part number | KCMYXRUG3T84 |
|---|---|
| Brand | Kioxia |
| Made by | Kioxia |
| Type | SSDs |
| Other numbers | KCMYXRUG3T840, CM7-R 3.84TB, KCMY1RUG3T84 |
| Status | current |
| Capacity (GB) | 3,840 |
| Interface | NVMe PCIe Gen5 U.3 (tri-mode backplane) |
| Form factor | SFF 2.5in, U.3 15mm |
| Endurance | Read Intensive, 1.0 DWPD |
| Generation fit | PCIe Gen5 enterprise servers and storage arrays |
About the KCMYXRUG3T84
KCMYXRUG3T84 is the 3.84TB read-intensive PCIe Gen5 x4 NVMe solid state drive in Kioxia's CM7-R series. Reaching up to 14,000 MB/s sequential read and 2,700,000 random read IOPS, it unlocks unprecedented storage throughput for large-scale enterprise virtualization, in-memory database caching, and high-throughput data pipelines. It represents Kioxia's core enterprise flash capacity point, designed for mission-critical applications demanding maximum PCIe 5.0 bus saturation.
Compatibility
Compatible with enterprise servers equipped with PCIe Gen5 U.3 drive bays, including Dell PowerEdge R760, HPE ProLiant DL380 Gen11, and Lenovo ThinkSystem SR650 V3. It supports both single-port and dual-port multi-pathing configurations. It is backward compatible with PCIe 4.0 slots. It does not fit into 7mm-only drive bays due to its 15mm thick enclosure.
How to identify a genuine unit
Genuine units bear a Kioxia label with model KCMYXRUG3T84 and CM7-R series markings. The 15mm enclosure features heat-dissipating cast aluminum alloy casing. In system utilities, it reports as a Kioxia PCIe Gen5 NVMe controller with standard 512-byte or 4096-byte LBA formatting.
Buying used
Request a smartctl or nvme-cli log to verify percentage used, total bytes written, and power-on hours. Because PCIe Gen5 SSDs operate at extreme bandwidth, verify that the 15mm heatsink fins are free of dust clogging and thermal pads are intact. Ensure the drive has not been locked by an enterprise crypto key and that the physical U.3 connector pins are completely straight and clean.
Reference prices (last 14 days, updated 2026-10-27)
New: USD 540 (1 sighting, Oct 2026)
Used: USD 360 (1 sighting, Oct 2026)
All sightings
| Seller | Condition | Price | Note | Seen |
|---|---|---|---|---|
| serversupply.com | new | USD 540 | 2026-10-27 | |
| ebay.com | used | USD 360 | 2026-10-27 |
Prices seen on public listings on the dates shown, before tax and shipping. Not an offer.
Fits these models
Equivalent part numbers
- HPE P63830-B21 HPE 3.84TB NVMe Gen4/Gen5 RI BC U.3 CM7 SSD
FAQ
What form factor does this 3.84TB CM7 drive use?
2.5-inch 15mm thick U.3 / SFF form factor.
Is the CM7-R backward compatible with PCIe Gen4 slots?
Yes, it functions seamlessly in PCIe 4.0 slots at Gen4 speeds.
Does it support hardware power loss protection?
Yes, full enterprise PLP is included on all CM7 drives.
Buying or selling KCMYXRUG3T84?
New, refurbished or used. Tell us the quantity and condition and we connect you with a vetted reseller in your region, usually within one working day.
Sources
- Kioxia CM7-R Series Enterprise NVMe SSD Datasheet, checked 2026-10-27