ADATA LEGEND 860 1TB NVMe SSD SLEG-860-1000GCS PCIe Gen4 M.2 2280 Heatsink

The ADATA LEGEND 860 1TB is an internal PCIe Gen4 x4 NVMe solid-state drive in the M.2 2280 form factor. It is designed for compatible desktop PCs, laptops, gaming systems and selected PS5 storage-expansion installations. The exact 1TB model sold here is SLEG-860-1000GCS.

The manufacturer part number is SLEG-860-1000GCS. The EAN is 4711085949493. Checking the exact model number is useful because performance and endurance figures can differ between the 500GB, 1TB and 2TB versions of the LEGEND 860.

This model has a manufacturer-rated capacity of 1TB / 1000GB. The usable capacity shown by an operating system will be lower because SSD manufacturers and operating systems use different methods of calculating and displaying storage capacity and because some space is used for formatting and system information.

It uses the standard M.2 2280 form factor. This means the SSD is approximately 22mm wide and 80mm long. Your motherboard, laptop or other device must provide a compatible M.2 2280 PCIe NVMe slot.

The LEGEND 860 uses a PCIe Gen4 x4 NVMe interface. Four PCIe lanes are used when installed in a suitable x4-capable M.2 slot, allowing substantially greater storage bandwidth than a SATA SSD.

ADATA rates the exact 1TB model at up to 6,000MB/s sequential read and up to 4,000MB/s sequential write on a suitable PC or laptop platform. Actual performance depends on the motherboard, processor, PCIe generation, operating system, workload, SSD temperature and available cache.

The 5,000MB/s maximum write figure applies to the higher-capacity 2TB LEGEND 860. The exact 1TB SLEG-860-1000GCS model is officially rated at up to 6,000MB/s read and 4,000MB/s write. Capacity-specific performance should therefore be checked when comparing listings.

ADATA's current official datasheet lists the LEGEND 860 as compliant with the NVMe 1.4 standard. It should primarily be identified by its PCIe Gen4 x4 NVMe interface and M.2 2280 form factor when checking system compatibility.

PCIe Gen4 describes the fourth generation of the PCI Express interface, while x4 means the SSD can use four PCIe lanes. To reach the LEGEND 860's maximum advertised performance, the SSD should be installed in a motherboard or device with a compatible PCIe Gen4 x4 M.2 NVMe slot.

Yes. ADATA states that the LEGEND 860 is backward compatible with PCIe Gen3 platforms. It can therefore operate in a compatible PCIe Gen3 M.2 NVMe slot, but performance will be limited by the slower interface and will not reach the full PCIe Gen4 speed.

ADATA states that when the LEGEND 860 is used on a third-generation PCIe platform, sequential performance can reach approximately 3,400MB/s read and 3,000MB/s write. Actual results still depend on the particular motherboard, CPU, M.2 slot and workload.

Generally yes. PCIe is designed for backward compatibility, so a Gen4 NVMe SSD can normally operate in a compatible Gen5 M.2 NVMe slot. The LEGEND 860 will still operate as a PCIe Gen4 device rather than becoming a Gen5 SSD.

No. The LEGEND 860 is a PCIe NVMe SSD, not an M.2 SATA drive. An M.2 connector can support SATA, NVMe or both depending on the device, so check the motherboard or laptop manual to confirm that the relevant M.2 slot supports PCIe NVMe SSDs.

Check your motherboard manual or specification page for an M.2 2280 slot supporting PCIe NVMe. PCIe Gen4 x4 support is required for maximum performance, although the drive is also backward compatible with supported PCIe Gen3 NVMe slots.

Yes. It is well suited to compatible desktop PCs and can be used as a Windows boot drive, application drive, gaming SSD or general high-speed storage drive. Check that the motherboard provides a compatible M.2 PCIe NVMe slot.

Yes, if the laptop supports an 80mm M.2 2280 PCIe NVMe SSD. However, laptop M.2 compartments vary considerably in available height, so you should also check clearance for the heatsink or heat spreader before installation.

It depends on the laptop. The LEGEND 860 measures approximately 3.13mm thick with its heatsink, compared with approximately 2.15mm without it. Some thin laptops have very limited M.2 clearance or use their own thermal pad and metal cover, so check your laptop's service manual before ordering.

ADATA lists dimensions of approximately 80 x 22 x 3.13mm with the heatsink and 80 x 22 x 2.15mm without the heatsink. It is therefore a standard 2280-length SSD with a relatively slim cooling structure.

ADATA specifies approximately 9.5g with the heatsink and approximately 6.5g without it. Its compact M.2 design makes it suitable for devices where minimising internal weight and cabling is useful.

Yes. This Memox listing is for the LEGEND 860 1TB supplied with the low-profile heat-dissipation solution shown for the product. The cooling structure helps transfer heat away from the SSD during sustained activity.

Normally you should use one suitable cooling solution rather than stacking additional heatsinks on top of an existing one. If your motherboard has its own M.2 heatsink, check its instructions and available clearance before deciding which cooling solution to use.

Possibly, but you should check the motherboard instructions first. Motherboard M.2 heatsinks are often designed to contact the SSD through a thermal pad. Avoid forcing a motherboard heatsink over an SSD if the combined thickness creates excessive pressure or prevents proper installation.

ADATA specifies an operating temperature range of 0°C to 70°C and a storage temperature range of -40°C to 85°C. Good airflow and an appropriate heatsink are particularly useful during sustained file transfers or other intensive storage workloads.

Like other high-speed NVMe SSDs, performance can be affected if drive temperature becomes excessive. Adequate cooling, system airflow and proper installation help maintain more consistent performance. ADATA SSD Toolbox can be used on supported PCs to monitor SSD temperature.

ADATA specifically lists the LEGEND 860 as working with PS5 storage expansion and has published PS5 compatibility material for the series. However, buyers should also understand the difference between ADATA's stated PS5 performance and Sony's recommended read-speed specification.

ADATA states that the LEGEND 860 can deliver up to approximately 5,000MB/s sequential read performance on PS5. This is lower than its maximum PC/laptop sequential read rating of up to 6,000MB/s.

Not according to ADATA's stated PS5 figure. Sony recommends an M.2 SSD sequential read speed of 5,500MB/s or faster, while ADATA specifies up to approximately 5,000MB/s for the LEGEND 860 on PS5. ADATA nevertheless lists the LEGEND 860 as working with PS5. Buyers wanting to meet or exceed Sony's recommended speed should consider a faster PS5-oriented SSD.

The LEGEND 860 with heatsink measures approximately 80 x 22 x 3.13mm, which is within Sony's stated maximum M.2 expansion dimensions. Sony requires effective heat dissipation for an installed M.2 SSD, so the slim cooling structure is useful for this application.

No. Sony states that PS5 consoles do not support Host Memory Buffer (HMB). The LEGEND 860 can still operate as M.2 storage, but the console cannot provide system memory for its HMB functionality, which can affect performance compared with a compatible PC environment.

Yes. When a new M.2 SSD is installed in a PS5 for the first time, the console asks you to format it before use. Formatting erases data on the drive, so do not install a drive containing files you need unless those files have already been backed up.

When successfully installed and formatted as PS5 M.2 expansion storage, PS5 games can be downloaded, moved to and launched from M.2 SSD storage. ADATA lists the LEGEND 860 as working with PS5, subject to the performance considerations described above.

Yes. Its PCIe Gen4 x4 interface and up to 6,000MB/s read performance make it suitable for modern gaming PCs, game libraries and general system storage. Real-world game-loading improvements vary by title and by the storage drive being replaced.

For many gaming PCs, 1TB provides a useful balance between capacity and cost. The exact number of games you can install depends heavily on game size: smaller titles may require only a few gigabytes, while modern AAA games can consume well over 100GB each.

Yes. The LEGEND 860 can be used as the primary Windows boot and application drive on a compatible system. A PCIe NVMe SSD can provide fast startup, application loading and general system responsiveness compared with traditional hard drives.

Yes, on a PC whose hardware and firmware support NVMe storage. Windows 11 includes support for modern NVMe SSDs. The motherboard BIOS or UEFI must also recognise the M.2 NVMe device if you intend to use it as the system boot drive.

Yes. The LEGEND 860 can be used with Windows 10 on compatible NVMe-capable hardware. ADATA's published test platform for the series also uses Windows 10.

Generally yes, provided the computer and Linux distribution support standard NVMe storage. Compatibility is primarily determined by the motherboard or laptop's M.2 NVMe support and the operating system's NVMe driver support.

Do not assume compatibility simply because the LEGEND 860 is an M.2 SSD. Many Apple computers use soldered storage, proprietary SSD formats or require model-specific adapters. Check the exact Mac model and its storage-upgrade requirements before purchasing.

Yes. ADATA positions the LEGEND 860 as an upgrade for creators. Its high sequential read performance can help when loading large project files, media assets and applications. Very heavy professional workloads involving sustained writes may benefit from a higher-end SSD with greater write performance and endurance.

Yes. It can provide fast project loading, application responsiveness and file transfers for photo editing, graphic design and general creative workloads. Actual application performance also depends on CPU, RAM, GPU and the size of the files being processed.

The LEGEND 860 is a PCIe NVMe SSD and can be used in systems that meet Microsoft's DirectStorage requirements. Whether DirectStorage is actually used depends on the Windows version, system hardware and individual game or application support.

Host Memory Buffer (HMB) allows a compatible operating system and NVMe controller to use a small amount of the computer's system RAM for SSD management information. ADATA officially lists HMB support as one of the LEGEND 860's features.

ADATA's current LEGEND 860 specification does not list a dedicated DRAM cache buffer; instead, it specifically lists Host Memory Buffer (HMB). If dedicated onboard DRAM is essential for your workload, choose an SSD whose manufacturer explicitly specifies a DRAM cache.

Yes. ADATA officially lists SLC caching as a feature of the LEGEND 860. SLC caching allows part of the NAND storage to operate temporarily in a faster mode to improve write responsiveness during suitable workloads.

The LEGEND 860 uses SLC caching. During a long sustained write, the available high-speed cache can eventually become exhausted, after which the SSD writes directly to its underlying NAND at a lower rate. Available free space, SSD temperature and background activity can also affect sustained performance.

ADATA officially specifies 3D NAND flash for the LEGEND 860. The current manufacturer datasheet does not specify a particular TLC or QLC NAND type for this model, so buyers should not rely on an unofficial NAND classification when comparing the drive.

ADATA's current consumer datasheet does not specify a controller model for the LEGEND 860. Because SSD manufacturers can sometimes revise internal components during a product's life, the official performance, endurance and warranty specifications are more reliable purchasing criteria than assuming a particular controller revision.

The exact 1TB LEGEND 860 is rated for 320TBW. The 500GB model is rated at 160TBW and the 2TB version at 640TBW, so the higher 640TB figure should not be used for the 1TB model.

TBW means Terabytes Written. A 320TBW rating indicates the manufacturer's stated write-endurance level for the 1TB version. It does not mean the SSD suddenly stops working at exactly 320TB; it is an endurance specification used together with the warranty terms.

ADATA specifies an MTBF of 2,000,000 hours. MTBF is a statistical reliability metric used across large populations of devices and should not be interpreted as a prediction that one individual SSD will operate continuously for two million hours.

ADATA lists a 5-year limited manufacturer warranty. SSD warranty coverage is subject to ADATA's warranty terms and endurance limits, including the applicable TBW rating, so retaining proof of purchase is recommended.

Yes. ADATA SSD Toolbox supports S.M.A.R.T. drive information, allowing compatible systems to display data such as drive health, temperature, remaining lifespan, firmware version, capacity and total bytes written.

ADATA SSD Toolbox is the manufacturer's SSD management software. It can display drive information, health, temperature and remaining lifespan and includes diagnostic and maintenance functions for supported ADATA SSDs.

ADATA SSD Toolbox provides access to firmware information and can direct users to available firmware updates for supported drives. Firmware should only be updated using ADATA's official instructions, and important files should always be backed up before storage maintenance.

Yes. An existing Windows installation can normally be cloned to the LEGEND 860 using suitable disk-cloning software, provided the source data and partition layout fit on the new drive. Back up important files first and confirm that the computer can boot from NVMe storage before replacing the original drive.

First confirm that the SSD is fully inserted into a PCIe NVMe-compatible M.2 slot. Check the motherboard manual because some M.2 slots share PCIe lanes or may be disabled by certain SATA or PCIe configurations. Updating motherboard BIOS/UEFI firmware and checking storage settings may also help.

A new blank SSD normally needs to be initialised, partitioned and formatted before it appears as a usable Windows drive. In Windows, this can normally be done through Disk Management. Be careful to select the correct disk so that existing data on other drives is not erased.

This is normal. SSD manufacturers state capacity using decimal units, while operating systems may calculate or display capacity differently. Formatting and system metadata also use some storage space, so a 1TB SSD will normally show less than the advertised 1,000GB as usable space in Windows.

Yes, if the enclosure supports M.2 2280 PCIe NVMe SSDs and has sufficient physical clearance for the drive. External performance will be limited by the enclosure and connection interface, so a USB enclosure will generally not deliver the SSD's full internal PCIe Gen4 x4 speed.

The LEGEND 860 1TB is well suited to users wanting a fast mainstream PCIe Gen4 SSD for gaming, Windows, everyday computing, laptop or desktop upgrades and creative workloads. Consider a higher-end SSD if you specifically require dedicated DRAM, higher sustained write performance, greater endurance, speeds above 6,000MB/s, or a PS5 SSD that meets or exceeds Sony's recommended 5,500MB/s read speed.