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Pichau Celestia 1 TB (MAP1602 + YMTC CDT1B)

1 TB
Capacity
MAP1602A
Controller
TLC
Flash
PCIe 4.0 x4
Interface
M.2 2230
Form Factor
Front
SSD Controller
Controller
NAND Die
NAND Die
The Pichau Celestia is a solid-state drive in the M.2 2230 form factor, launched in 2023. It is only available in the 1 TB capacity listed on this page. With the rest of the system, the Pichau Celestia interfaces using a PCI-Express 4.0 x4 connection. The SSD controller is the MAP1602A Falcon Lite from MaxioTech, a DRAM cache is not available. Pichau has installed 128-layer TLC NAND flash on the Celestia, the flash chips are made by YMTC. To improve write speeds, a pseudo-SLC cache is used, so bursts of incoming writes are soaked up more quickly. Thanks to support for the fast PCI-Express 4.0 interface, performance is excellent. The Celestia is rated for sequential read speeds of up to 5,000 MB/s and 4,200 MB/s write; random IOPS reach up to 360K for reads and 220K for writes.
At its launch, the SSD was priced at 130 USD. The warranty length is set to one year, which is quite short for the SSD industry. Pichau guarantees an endurance rating of 320 TBW, a good value.

Solid-State-Drive

Capacity: 1 TB (1000 GB)
Overprovisioning: 92.7 GB / 10.0 %
Production: Active
Released: 2023
Price at Launch: 130 USD
Part Number: PCH-CLS-1TB
Market: Consumer

Physical

Form Factor: M.2 2230 (Single-Sided)
Interface: PCIe 4.0 x4
Protocol: NVMe 1.4
Power Draw: Unknown (Idle)
1.5 W (Avg)
Unknown (Max)

Controller

Manufacturer: MaxioTech
Name: MAP1602A Falcon Lite
Architecture: ARM 32-bit Cortex-R5
Core Count: Quad-Core
Foundry: TSMC
Process: 12 nm
Flash Channels: 4 @ 2,400 MT/s
Chip Enables: 4
Controller Features: HMB (enabled)

NAND Flash

Manufacturer: YMTC
Name: Xtacking 2.0 (CDT1B)
Type: TLC
Technology: 128-layer
Speed: 1600 MT/s
Capacity: 1 chip @ 8 Tbit
ONFI: 4.1
Topology: Charge Trap
Die Size: 60 mm²
(8.5 Gbit/mm²)
Dies per Chip: 16 dies @ 512 Gbit
Planes per Die: 4
Decks per Die: 2
Word Lines: 141 per NAND String
90.8% Vertical Efficiency
Read Time (tR): 50 µs
Program Time (tProg): 620 µs
Block Erase Time (tBERS): 20 ms
Die Read Speed: 1280 MB/s
Die Write Speed: 70 MB/s
Endurance:
(up to)		 3000 P/E Cycles
Page Size: 16 KB
Block Size: 2304 Pages
Plane Size: 1980 Blocks

DRAM Cache

Type: None
Host-Memory-Buffer (HMB): 40 MB

Performance

Sequential Read: 5,000 MB/s
Sequential Write: 4,200 MB/s
Random Read: 360,000 IOPS
Random Write: 220,000 IOPS
Endurance: 320 TBW
Warranty: 1 Year
Drive Writes Per Day (DWPD): 0.9
SLC Write Cache: Yes

Features

TRIM: Yes
SMART: Yes
Power Loss Protection: No
Encryption:
  • Unknown
RGB Lighting: No
PS5 Compatible: Yes

Same Drive

This section lists other SSDs in our database using the exact same hardware components

Notes

Controller:

This controller features multiples variants:
F1C - Uses NVMe 1.4
F2C - Uses NVMe 1.4
F3C - Uses NVMe 2.0
F3C U - For 4TB SSDs and uses NVMe 2.0

NAND Die:

Read Time (tR): Maximum is 50 µs, typical is lower
Typical Program Time (tPROG): 620 µs
Maximum Program Time (tPROG): Maximum is 910 µs
Block Erase Time (tBERS): Maximum is 20 ms, typical is lower
Array Eficiency of over 92%
YMTC 128L Xtacking 2.0 cell architecture consists of two decks connected through deck-interface buffer layer which is the same process with KIOXIA 112L BiCS 3D NAND structure. Cell size, CSL pitch, and 9-hole VC layouts keep the same design and dimension (horizontal/vertical WL and BL pitches) with previous 64L Xtacking 1.0 cell. Total number of gates is 141 (141T) including selectors and dummy WLs for the TLC operation.
This layout has a 1x 4 Plane layout, each one lineup side by side
Jun 1st, 2024 05:22 EDT change timezone

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