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

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.

Quick answer: 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.

## Specifications

| Specification | Value |
| --- | --- |
| Capacity | 512 GB |
| Interface | M.2 4.0 x 4 |
| Controller | InnoGrit IG5220 |
| Memory type | 3D TLC |
| DRAM cache | No |
| Sequential read | 6000 MB/s |
| Sequential write | 3000 MB/s |
| Random read IOPS | 6000000 |
| Random write IOPS | 5000000 |
| Endurance | 320 TBW |
| MTBF | 1500000 |
| Warranty | 5 years |

## Performance

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.

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.

## 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.

## Pros and Cons

**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


## Verdict

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.

## Frequently Asked Questions

### Is the ADATA Legend 860 512 GB good for gaming?

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.

### Is the ADATA Legend 860 512 GB compatible with the PS5?

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.

### Does the ADATA Legend 860 have a DRAM cache?

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.

### What is the TBW of the ADATA Legend 860 512 GB?

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.

### Does the ADATA Legend 860 512 GB need a heatsink?

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.

### Is the 512 GB Legend 860 slower than the 1 TB version?

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.

### How does the ADATA Legend 860 512 GB compare to the WD Blue SN580?

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.

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Last updated: 2026-07-17. Source: https://ssdrive.net/adata-legend-860-512-gb