ADATA Legend 860 512 GB: Budget Gen4 NVMe with HMB (2026)

Name: ADATA Legend 860 512 GB
Brand: ADATA
SKU: adata-legend-860-512-gb
Rating: 4 (71 reviews)

Posted on July 17, 2026 by Raymond Chen

The ADATA Legend 860 512 GB pairs a DRAMless IG5220 controller with 6,000 MB/s PCIe 4.0 reads, 320 TBW endurance, and a five-year warranty, slotting into budget desktops, laptops, and PS5 consoles.

ADATA Legend 860 512 GB: Budget Gen4 NVMe with HMB

Controller & Memory

The ADATA Legend 860 512 GB runs on InnoGrit's IG5220, a four-channel DRAMless PCIe 4.0 controller paired with 3D TLC NAND and NVMe 2.0 firmware. Without onboard DRAM, the drive relies on the Host Memory Buffer protocol to borrow a small slice of system RAM for its mapping tables, a design choice that keeps the bill of materials and power consumption low while preserving everyday responsiveness. The PCB is a single-sided M.2 2280 board, thin enough at 2.15 mm for ultrabooks and the PlayStation 5 expansion bay. ADATA includes a thin metal heatspreader with pre-applied thermal adhesive in the box, though the adhesive is aggressive and effectively permanent once pressed on, so builders with a motherboard M.2 heatsink should decide before installation.

The Legend 860 sits at the entry tier of ADATA's Gen4 stack below the Legend 900 and Legend 960 Max. It ships in three capacities: 500 GB, 1 TB, and 2 TB, with sequential writes scaling from 3,000 MB/s at 500 GB through 4,000 MB/s at 1 TB to 5,000 MB/s at 2 TB, while all capacities share the same 6,000 MB/s peak read speed. ADATA originally launched the Legend 860 with QLC NAND and a subsequent TLC revision doubled endurance across the stack, so current production carries notably higher TBW ratings than the early samples reviewed in 2025. This 512 GB variant is the most affordable entry point and is best suited to OS, application, and game library duty rather than sustained write-heavy workloads.

As a drop-in upgrade the drive fits desktops, thin-and-light laptops, and the PS5 expansion slot without clearance issues. It meets Sony's published requirements of PCIe 4.0 and a 5,500 MB/s minimum sequential read speed, and the single-sided design clears the console's tight dimensions. The closest competitors at this capacity are the WD Blue SN580, Crucial P3 Plus, and Kingston NV3, all DRAMless Gen4 drives aimed at the same value-conscious buyer. Against those, the Legend 860 distinguishes itself with a five-year warranty and the IG5220's mature firmware track record across multiple drive families, though its 3,000 MB/s sequential write ceiling is the lowest in the group at this capacity.

Storage Comparisons:

Best PCIe 4.0 SSD Drive Best Deal of 1 TB SSDs NVME Top 2 TB SSDs

Legend 860 Performance & Benchmarks

At 6,000 MB/s sequential reads and 3,000 MB/s sequential writes, the ADATA Legend 860 512 GB operates at the entry tier of PCIe 4.0 performance. The 6,000 MB/s read ceiling is uniform across all Legend 860 capacities, while the 3,000 MB/s write rating is specific to the 512 GB and reflects the combination of fewer NAND dies active and a proportionally smaller SLC write cache. Independent testing of the 1 TB sibling by Back2Gaming found that the IG5220 controller exceeds its rated sequential numbers in CrystalDiskMark, clearing 6,300 MB/s reads and 4,200 MB/s writes on the larger capacity. The 512 GB should track proportionally lower on writes but still reach its rated 6,000 MB/s reads without difficulty. The SLC write cache on the 1 TB holds roughly 268 GB before exhaustion, and on the 512 GB the cache is proportionally smaller, estimated in the 120 GB to 140 GB range. Once the cache fills, writes settle to the native TLC rate, which on a DRAMless four-channel controller falls well below the burst figure and drops into the low triple-digit MB/s range under sustained load.

Performance comparison

ADATA Legend 860 512 GB vs M.2 4.0 x 4 peers

Switch between sequential throughput and random IOPS to see how this drive stacks up against other M.2 4.0 x 4 SSDs in our database. The highlighted bar is the drive on this page — click any other bar to open that drive.

Patriot Viper PV593 1 TB: 14,500 MB/s read, 14,000 MB/s write
Patriot Viper PV593 2 TB: 14,500 MB/s read, 14,000 MB/s write
Patriot Viper PV593 4 TB: 14,500 MB/s read, 14,000 MB/s write
Patriot Viper PV573 2 TB: 14,000 MB/s read, 12,000 MB/s write
ADATA Legend 860 512 GB (this drive): 6,000 MB/s read, 3,000 MB/s write

For the workloads this capacity is bought for, the cache size is rarely a constraint. A game install, OS migration, or large application download fits entirely inside the SLC window, and the drive recovers quickly at idle. In a PlayStation 5 the console's internal benchmark averages around 5,000 MB/s reads, consistent with the PS5's own storage controller ceiling, and game load times are indistinguishable from pricier Gen4 alternatives. The drive runs cool by Gen4 standards, and the included heatspreader is adequate for typical desktop use, though a motherboard slot with active heatsink coverage is always the safer choice for sustained sessions. For a pure scratch-disk or heavy video ingest workflow the 512 GB is the wrong tool, but for everyday operating system, application, and game duty, the IG5220 platform has a solid record of delivering rated Gen4 entry-tier speeds without thermal surprises.

ADATA Legend 860 vs Competitors

See how the Legend 860 stacks up against other M.2 4.0 x 4 drives in our database:

Compare with rival drives:

Acer FA200 500 GB BIWIN NV7200 512 GB PNY XLR8 CS3040 500 GB

Endurance, TBW & Warranty

ADATA covers the Legend 860 512 GB with a five-year limited warranty that ends early if the 320 TBW endurance rating is exceeded. That TBW figure scales from the 640 TBW rating on the 1 TB capacity, reflecting the TLC revision that doubled endurance from the original QLC launch ratings. At a typical consumer workload of 20 GB of writes per day, the 512 GB would need roughly 44 years to reach its endurance limit, so in practice the five-year warranty term expires long before the NAND wears out. Even at a heavier 50 GB per day the drive clears 17 years, far beyond any realistic service life for a budget SSD. ADATA rates the Legend 860 at up to 1.5 million hours mean time between failures, though this is a population-level reliability statistic rather than a lifespan guarantee for an individual unit. The thermal adhesive on the included heatspreader is not designed for removal and reapplication, so the installation decision is effectively permanent once the spreader is mounted.

ADATA Legend 860 512 GB Specifications

Category	Value
Capacity [?]	512 GB
Interface [?]	M.2 4.0 x 4
Controller [?]	InnoGrit IG5220
Memory type [?]	3D TLC
DRAM [?]	No
Read speed (MB/s) [?]	6000
Write speed (MB/s) [?]	3000
Read IOPS [?]	6000000
Write IOPS [?]	5000000
Endurance (TBW) [?]	320
MTBF (million hours) [?]	1500000
Warranty (years) [?]	5

Verdict: Is the Legend 860 Worth It in 2026?

The ADATA Legend 860 512 GB is a sensible pick for a budget-conscious desktop or laptop build where PCIe 4.0 connectivity is available and the workload is everyday operating system, application, and game duty. Buyers seeking a PS5 expansion drive at the entry tier get a compatible, single-sided Gen4 module with a five-year warranty and read speeds that clear Sony's published requirements. Skip this capacity if sustained write performance matters: the 3,000 MB/s ceiling and proportionally small SLC cache make the 1 TB variant a materially better choice for video ingest, scratch-disk work, or any workflow that involves large contiguous writes. The closest alternatives are the WD Blue SN580 500 GB, which offers higher sequential write speeds at this capacity, and the Crucial P3 Plus 500 GB, which competes on warranty and endurance. The verdict on the ADATA Legend 860 512 GB is a competent, no-surprises entry-level Gen4 SSD whose strongest selling points are a five-year warranty and broad platform compatibility rather than chart-topping performance.

+ Pros

6,000 MB/s sequential reads over PCIe 4.0
320 TBW endurance with five-year warranty
Single-sided M.2 2280 fits ultrabooks and PS5
Included metal heatspreader in the box
InnoGrit IG5220 controller with NVMe 2.0
Cool operation under typical desktop workloads
TLC NAND on current production revision

- Cons

3,000 MB/s write speed, the lowest in the Legend 860 line
DRAMless HMB design limits sustained write throughput
Smaller SLC cache than 1 TB and 2 TB siblings
Heatspreader adhesive is difficult to remove once applied
Post-cache write speeds drop into low triple-digit MB/s
No AES 256-bit hardware encryption support

4 / 5 · 71 votes

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Video Review

ADATA LEGEND 860 Gen4 SSD - Powerful and Audacious

Frequently Asked Questions

The ADATA Legend 860 512 GB handles gaming well, though the 512 GB capacity is tight for a modern game library where individual AAA titles routinely exceed 100 GB. The 6,000 MB/s sequential reads over PCIe 4.0 deliver game load times that are indistinguishable from pricier Gen4 drives, and the DRAMless HMB design does not hurt gaming because game loads are predominantly read-bound with minimal sustained writes. DirectStorage-compatible titles benefit from the NVMe 2.0 protocol support, though real-world gains over SATA or PCIe 3.0 are modest outside of a handful of optimized titles. For a budget gaming build on an AM4 or LGA 1700 platform with a PCIe 4.0 M.2 slot, the Legend 860 512 GB is a competent OS-plus-few-games drive, but the capacity limitation means a secondary SSD or hard drive for the full game library is advisable.

The ADATA Legend 860 512 GB meets all of Sony's published requirements for PS5 storage expansion. Sony mandates a PCIe 4.0 NVMe SSD with at least 5,500 MB/s sequential reads and physical dimensions within 110 by 25 by 11.25 millimetres including a heatsink. The Legend 860 delivers 6,000 MB/s reads, and its single-sided M.2 2280 form factor fits the console's expansion bay without clearance issues. The included metal heatspreader keeps the drive within the PS5's thermal envelope, though Back2Gaming's testing recorded approximately 5,000 MB/s from the console's internal benchmark, which reflects the PS5's own storage controller ceiling rather than a drive limitation. Sony's minimum capacity for PS5 expansion is 250 GB, so the 512 GB is a valid entry-level option, though the 1 TB variant is a better long-term fit for a growing game library.

The ADATA Legend 860 does not have a physical DRAM cache chip. Instead it uses the NVMe Host Memory Buffer protocol, which allows the drive to borrow a small portion of the host system's RAM for its flash translation layer mapping tables. HMB is standard on entry-level DRAMless Gen4 SSDs and keeps random read latency competitive with DRAM-equipped drives in typical consumer workloads. The trade-off is that sustained write performance under heavy queue depths is lower than a DRAM-cached drive because the mapping table lookups share PCIe bandwidth with user data transfers. For operating system duty, game loads, and general productivity, HMB is functionally transparent, and the cost savings from omitting a DRAM package are what make the Legend 860 an affordable Gen4 option.

The ADATA Legend 860 512 GB carries a 320 TBW endurance rating under the current TLC production revision. This figure scales from the 640 TBW rating confirmed for the 1 TB variant by Back2Gaming's May 2026 review, which documented a TLC NAND revision that doubled endurance from the original QLC launch version. At a typical consumer write workload of 20 GB per day, the 512 GB would need approximately 44 years to reach 320 TBW, so the five-year warranty term expires long before the NAND approaches its write endurance limit. The 320 TBW rating is competitive within the entry-level Gen4 segment and sufficient for operating system duty, application installs, and a rotating game library.

The ADATA Legend 860 512 GB includes a thin metal heatspreader in the box, and in most desktop and PS5 installations that is sufficient. The IG5220 controller runs relatively cool by Gen4 standards, and Back2Gaming's testing of the 1 TB sibling found no thermal throttling under typical gaming and productivity workloads with the included spreader. The caveat is the heatspreader's pre-applied thermal adhesive, which is aggressive and effectively permanent once mated to the drive. If the target motherboard has a built-in M.2 heatsink with a thermal pad, it is generally better to skip the included spreader and use the motherboard solution instead. In a laptop, the drive's 2.15 mm bare thickness means it fits even in tight slots, and the modest thermal output of the 512 GB capacity makes a dedicated heatsink inessential for most thin-and-light chassis.

The 512 GB ADATA Legend 860 is slower than the 1 TB version on sequential writes, and the gap is material. All Legend 860 capacities share the same 6,000 MB/s peak read speed, but sequential write ratings differ sharply by capacity: 3,000 MB/s at 512 GB, 4,000 MB/s at 1 TB, and 5,000 MB/s at 2 TB. The reason is that fewer NAND packages are populated on the smaller PCB and fewer dies are available for parallel writes. The SLC write cache is also proportionally smaller on the 512 GB, roughly half the size of the 1 TB's approximately 268 GB cache. For read-heavy workloads such as game loads and application launches the difference is negligible, but for any task involving large contiguous writes the write speed gap between the 512 GB and 1 TB variants is the widest in the Legend 860 line.

The ADATA Legend 860 512 GB and WD Blue SN580 500 GB occupy the same entry-level DRAMless Gen4 segment but differ in a few areas that matter at this capacity. The WD Blue SN580 offers higher sequential write speeds at around 4,000 MB/s for the 500 GB model, a full 1,000 MB/s ahead of the Legend 860's 3,000 MB/s rating. Both drives use Host Memory Buffer instead of onboard DRAM and both carry five-year warranties. The Legend 860 counters with an included heatspreader, which the SN580 lacks, and the IG5220 controller has a broader track record across multiple drive families. Endurance is comparable at roughly 300 TBW to 320 TBW for this capacity. For a pure OS and game drive the real-world difference is small, but buyers who do periodic large file transfers or video work should lean toward the SN580 for its higher write ceiling at the same capacity.