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PNY CS900 240 GB (Micron B16A)

240 GB
Capacity
Phison S11
Controller
TLC
Flash
SATA 6 Gbps
Interface
2.5"
Form Factor

Multiple hardware versions found.

Performance could vary due to unannounced flash/controller changes.

Package
Package
SSD Controller
Controller
NAND Die
NAND Die
The PNY CS900 is a solid-state drive in the 2.5" form factor, launched on March 12th, 2018. It is available in capacities ranging from 120 GB to 250 GB. This page reports specifications for the 240 GB variant. With the rest of the system, the PNY CS900 interfaces using a SATA 6 Gbps connection. The SSD controller is the PS3111-S11-13 from Phison, a DRAM cache is not available. PNY has installed 64-layer TLC NAND flash on the CS900, the flash chips are made by Micron. Please note that this SSD is sold in multiple variants with different NAND flash or controller, which could affect performance, the "Notes" section at the end of this page has more info. To improve write speeds, a pseudo-SLC cache is used, so bursts of incoming writes are absorbed more quickly. The CS900 is rated for sequential read speeds of up to 535 MB/s and 500 MB/s write.
At its launch, the SSD was priced at 26 USD. The warranty length is set to three years, which is above average, but shorter than the five years offered by many other vendors. PNY guarantees an endurance rating of 100 TBW, a typical value for consumer SSDs.

Solid-State-Drive

Capacity: 240 GB
Variants: 120 GB 240 GB 250 GB
Hardware Versions:
Overprovisioning: 32.5 GB / 14.5 %
Production: Active
Released: Mar 12th, 2018
Price at Launch: 26 USD
Part Number: SSD7CS900-240-RB
Market: Consumer

Physical

Form Factor: 2.5"
Interface: SATA 6 Gbps
Protocol: AHCI
Power Draw: 0.30 W (Idle)
2.0 W (Avg)
Unknown (Max)

Controller

Manufacturer: Phison
Name: PS3111-S11-13
Architecture: ARM 32-bit
Core Count: Single-Core
Frequency: 200 MHz
Foundry: UMC
Process: 40 nm
Flash Channels: 2
Chip Enables: 8

NAND Flash

Manufacturer: Micron
Name: B16A FortisFlash
Type: TLC
Technology: 64-layer
Speed: 50 MT/s .. 667 MT/s
Capacity: Unknown
ONFI: 4.0
Topology: Floating Gate
Process: 20 nm
Die Size: 58 mm²
(4.4 Gbit/mm²)
Planes per Die: 2
Decks per Die: 2
Word Lines: 74 per NAND String
86.5% Vertical Efficiency
Read Time (tR): 76 µs
Program Time (tProg): 820 µs
Block Erase Time (tBERS): 15 ms
Die Read Speed: 842 MB/s
Die Write Speed: 39 MB/s
Endurance:
(up to)
1500 P/E Cycles
(40000 in SLC Mode)
Page Size: 16 KB
Block Size: 2304 Pages
Plane Size: 504 Blocks

DRAM Cache

Type: None

Performance

Sequential Read: 535 MB/s
Sequential Write: 500 MB/s
Random Read: Unknown
Random Write: Unknown
Endurance: 100 TBW
Warranty: 3 Years
MTBF: 2.0 Million Hours
Drive Writes Per Day (DWPD): 0.4
SLC Write Cache: Yes

Features

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

Notes

Drive:

Other variants might feature Micron's 64-Layer N18A FortisFlash or newer 96-Layer QLC/TLC. And even Toshiba's BiCS3.

Controller:

In order to improve performance, Phison implemented a way that the controller utilizes it's internal 32 MiB of SRAM as some kind of "Pit-stop" that is allocated for incoming Write request in order to improve performance since it's a very quick to access and fast RAM. This implementation was called Smart Cache Flush.
This SmartCacheFlush technology allows incoming data to only have a “pit stop” in the cache and then move to the NAND flash at once. If the flash is jammed due to particular file sizes (such as random 4KB data), the cache will be treated as an “organizer”, consolidating incoming data into groups before written into the flash to improve write amplification.

Apr 27th, 2024 03:32 EDT change timezone

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