Kioxia
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The KIOXIA BG4 512 GB SSD (model KBG40ZNV512G) is a single‑sided M.2 2280 NVMe drive targeting thin‑and‑light laptops and embedded systems. It offers up to 2,200 MB/s sequential reads, low power draw, and optional TCG Opal encryption while using 96‑layer BiCS FLASH TLC NAND.
Pros
Cons
Current
$99.00
Average
$47.54
Lowest
$45.99
Highest
$99.00
Lower = better sales rank
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From Expert Reviews
Praised by Experts
Criticized by Experts
From User Reviews
Users Love
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Best For
Ultrabook and thin‑laptop upgrades, OEM system replacements, embedded/industrial boot drives, casual gamers and general users seeking fast OS boot and app load times, and Steam Deck owners using the M.2 2230 version.
Not Ideal For
High‑performance workstations, content‑creation rigs with large file transfers, data‑center or server environments with heavy write workloads, and users demanding PCIe Gen4 speeds.
Expert Opinion
Professional reviewers note that the BG4 series delivers a solid mix of speed and efficiency for entry‑level NVMe storage, thanks to KIOXIA’s in‑house 96‑layer BiCS FLASH and HMB technology. While it lacks DRAM and falls short of the top‑tier Gen4 drives, its reliability and low power draw make it a dependable choice for OEM laptops and embedded applications.
What Users Say
Everyday users generally praise the drive for its easy installation, consistent everyday performance, and low heat/power profile. Common themes include appreciation for the value proposition and compatibility with thin devices, while complaints focus on variant confusion, occasional write‑speed throttling after cache depletion, and scarce retail packaging.
Common Complaints
Confusion between M.2 2230 and 2280 variants, write‑speed drop after SLC cache exhaustion, and limited availability of retail boxed units.
What People Are Saying
“Smooth upgrade experience in laptops and 2‑in‑1s”
“Reliable performance in everyday tasks (web browsing, office apps, media)”
“Some users report confusion between M.2 2230 and 2280 variants when upgrading devices”
How It Compares
vs. Samsung 980 (Non‑DRAM)
Advantages
Disadvantages
Choose Samsung 980 for raw speed if power draw is less critical; choose KIOXIA BG4 for lower power and OEM reliability.
vs. WD Blue SN570
Advantages
Disadvantages
WD Blue SN570 is a solid mainstream choice; KIOXIA BG4 is better for users needing optional Opal encryption and tighter power budgets.
vs. Crucial P3
Advantages
Disadvantages
Crucial P3 suits budget‑conscious consumers; KIOXIA BG4 is preferable for OEM, embedded, or security‑focused deployments.
