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Biostar M700 256 GB (Spectek B17A)

256 GB
Capacity
SM2263XT
Controller
TLC
Flash
PCIe 3.0 x4
Interface
M.2 2280
Form Factor

Multiple hardware versions found.

Performance could vary due to unannounced flash/controller changes.

Package
Package
SSD Controller
Controller
The Biostar M700 is a solid-state drive in the M.2 2280 form factor, launched on November 22nd, 2019. It is only available in the 256 GB capacity listed on this page. With the rest of the system, the Biostar M700 interfaces using a PCI-Express 3.0 x4 connection. The SSD controller is the SM2263XT from Silicon Motion, a DRAM cache is not available. Biostar has installed 64-layer TLC NAND flash on the M700, the flash chips are made by SpecTek. 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 M700 is rated for sequential read speeds of up to 1,850 MB/s and 950 MB/s write; random IO reaches 200K IOPS for read and 260K for writes.
At its launch, the SSD was priced at 30 USD. The warranty length is set to three years, which is above average, but shorter than the five years offered by many other vendors. The TBW rating for the Biostar M700 256 GB is unknown.

Solid-State-Drive

Capacity: 256 GB
Hardware Versions:
Overprovisioning: 17.6 GB / 7.4 %
Production: Active
Released: Nov 22nd, 2019
Price at Launch: 30 USD
Part Number: M700-256GB
Market: Consumer

Physical

Form Factor: M.2 2280
Interface: PCIe 3.0 x4
Protocol: NVMe 1.3
Power Draw: Unknown

Controller

Manufacturer: Silicon Motion
Name: SM2263XT
Architecture: ARM 32-bit Cortex-R5
Core Count: Dual-Core
Frequency: 575 MHz
Foundry: TSMC
Process: 28 nm
Flash Channels: 4 @ 800 MT/s
Chip Enables: 4
Controller Features: HMB (enabled)

NAND Flash

Manufacturer: SpecTek
Name: B17A
Rebranded: FBNB17A512G1KTBAFJ4
Type: TLC
Technology: 64-layer
Speed: 533 MT/s .. 667 MT/s
Capacity: 4 chips @ 512 Gbit
ONFI: 4.0
Topology: Floating Gate
Process: 20 nm
Die Size: 108 mm²
(4.7 Gbit/mm²)
Dies per Chip: 1 die @ 512 Gbit
Planes per Die: 4
Decks per Die: 2
Word Lines: 74 per NAND String
86.5% Vertical Efficiency
Read Time (tR): 88 µs
Program Time (tProg): 880 µs
Block Erase Time (tBERS): 1500 ms
Die Read Speed: 727 MB/s
Die Write Speed: 69 MB/s
Page Size: 16 KB
Block Size: 2304 Pages
Plane Size: 504 Blocks

DRAM Cache

Type: None
Host-Memory-Buffer (HMB): 64 MB

Performance

Sequential Read: 1,850 MB/s
Sequential Write: 950 MB/s
Random Read: 200,000 IOPS
Random Write: 260,000 IOPS
Endurance: Unknown
Warranty: 3 Years
MTBF: 1.5 Million Hours
SLC Write Cache: Yes

Features

TRIM: Yes
SMART: Yes
Power Loss Protection: No
Encryption:
  • AES-256
RGB Lighting: No
PS5 Compatible: No

Notes

Controller:

The difference between this and the non-XT revision (SM2263, SM2263G, SM2263ENG, etc.) is that this revision doesn't support the DRAM cache, in fact it uses HMB (Host Memory Buffer).

NAND Die:

Usually lower endurance ratings than Micron's counterpart

Jun 1st, 2024 09:00 EDT change timezone

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