ADATA LEGEND 860 2TB M.2 SSD
Here you will find a detailed speed, performance and benchmark test review. Tested was the M.2 NVMe SSD LEGEND 860 with 2TB (SLEG-860-2000GCS) from the brand ADATA.
| Technical specifications (manufacturer information) | |
| Product image | 
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| Manufacturer | ADATA |
| Model number | SLEG-860-2000GCS |
| Capacity | 2048 GB (1863 GiB) |
| pSLC cache | >400 GB approx. |
| Read speed | 6000 MB/s |
| Write speed | 5000 MB/s |
| Interface | PCIe 4.0 x4 |
| Connector | M.2 2280 |
| Memory module (NAND) | TLC |
| DRAM cache | ✓ Yes |
| TBW (Total Bytes Written) | 640 terabyte |
| Warranty | 5 Years |
| Controller | InnoGrit IG5220 |
Compare product Compared to the test winner*
v0.151a OS: 10.0 build 19045 Drive : 0(NVME) Scsi : 2 Driver : W10 Model : ADATA LEGEND 860 Fw : 1.c.P.49 HMB : 8192 - 131072 KB (Enabled, 64 M) NVMe ver: 1.4 Size : 1907729 MB [2000.4 GB] LBA Size: 512 AdminCmd: 0x00 0x01 0x02 0x04 0x05 0x06 0x08 0x09 0x0A 0x0C 0x10 0x11 0x14 0x80 0x81 0x82 0x84 0xF2 0xFC 0xFD 0xFE I/O Cmd : 0x00 0x01 0x02 0x09 F/W : 1.c.P.45 Bank00: 0x2c,0xd3,0x8,0x32,0xe8,0x30 - Micron 232L(B58R) TLC 1024Gb/CE 1024Gb/die Bank01: 0x2c,0xd3,0x8,0x32,0xe8,0x30 - Micron 232L(B58R) TLC 1024Gb/CE 1024Gb/die Bank02: 0x2c,0xd3,0x8,0x32,0xe8,0x30 - Micron 232L(B58R) TLC 1024Gb/CE 1024Gb/die Bank03: 0x2c,0xd3,0x8,0x32,0xe8,0x30 - Micron 232L(B58R) TLC 1024Gb/CE 1024Gb/die Bank08: 0x2c,0xd3,0x8,0x32,0xe8,0x30 - Micron 232L(B58R) TLC 1024Gb/CE 1024Gb/die Bank09: 0x2c,0xd3,0x8,0x32,0xe8,0x30 - Micron 232L(B58R) TLC 1024Gb/CE 1024Gb/die Bank10: 0x2c,0xd3,0x8,0x32,0xe8,0x30 - Micron 232L(B58R) TLC 1024Gb/CE 1024Gb/die Bank11: 0x2c,0xd3,0x8,0x32,0xe8,0x30 - Micron 232L(B58R) TLC 1024Gb/CE 1024Gb/die Bank16: 0x2c,0xd3,0x8,0x32,0xe8,0x30 - Micron 232L(B58R) TLC 1024Gb/CE 1024Gb/die Bank17: 0x2c,0xd3,0x8,0x32,0xe8,0x30 - Micron 232L(B58R) TLC 1024Gb/CE 1024Gb/die Bank18: 0x2c,0xd3,0x8,0x32,0xe8,0x30 - Micron 232L(B58R) TLC 1024Gb/CE 1024Gb/die Bank19: 0x2c,0xd3,0x8,0x32,0xe8,0x30 - Micron 232L(B58R) TLC 1024Gb/CE 1024Gb/die Bank24: 0x2c,0xd3,0x8,0x32,0xe8,0x30 - Micron 232L(B58R) TLC 1024Gb/CE 1024Gb/die Bank25: 0x2c,0xd3,0x8,0x32,0xe8,0x30 - Micron 232L(B58R) TLC 1024Gb/CE 1024Gb/die Bank26: 0x2c,0xd3,0x8,0x32,0xe8,0x30 - Micron 232L(B58R) TLC 1024Gb/CE 1024Gb/die Bank27: 0x2c,0xd3,0x8,0x32,0xe8,0x30 - Micron 232L(B58R) TLC 1024Gb/CE 1024Gb/die Flash params: 6b 1e 00 00 | 00 00 00 00 | 00 10 00 00 | 73 00 37 02 e0 0a 00 00 | 03 10 01 04 | 04 01 06 00 | 08 09 00 00 a0 03 11 00 | 48 3d 03 08 | 00 00 00 00 | 00 00 00 00 .. 00 00 00 00 | 00 00 00 00 | 14 00 00 00 | 00 00 00 00 31 2e 63 2e | 50 2e 34 35 | 60 09 60 09 | 9a 02 00 00 00 00 31 2e | 63 2e 50 2e | 34 35 00 00 | 00 00 00 00 Page count : 2784 Super blocks : 567 Total Die : 16 Channel : 4 CE/Ch : 4 Die/CE : 1 Plane : 6 Freq : 2400/2400/666
We put the ADATA NVMe M.2 SSD through a detailed test. You can find the test result / test report here:
AS SSD Benchmark
Standard performance test
The standard test was performed with a 5 GB file. A total score of 7629 points was achieved.
Copy performance test
A common everyday scenario is simulated here. Three test folders are created:
- ISO (folder with two large files)
- Program (folder with many small files)
- Game (folder with small and large files)
The three folders are copied using the Windows copy command (cache remains enabled). The real-world test from 22 July 2025 shows performance during simultaneous write and read operations. The lower the duration, the better.
| AS SSD Copy Benchmark | Transfer rate: | Duration: |
|---|---|---|
| ISO two large files |
2,197.00 MB/s |
1.05 s |
| Program typical program folder with many small files |
1,159.59 MB/s |
6.07 s |
| Game a game folder with small and large files |
1,807.62 MB/s |
3.82 s |
Compression performance test
Here, speed is measured depending on how compressible the data is.
CrystalDiskMark Benchmark
Similar to AS SSD, two sequential and two random performance tests are carried out here and the write and read speed (manufacturer specs: 6000 MB/s and 5000 MB/s) the ADATA SSD is measured.
| CDM | Read [MB/s] | Write [MB/s] |
|---|---|---|
| SEQ1M Q8T1 |
7,451.50 |
6,634.01 |
| SEQ1M Q1T1 |
4,754.25 |
5,785.38 |
| RND4K Q32T16 |
2,748.69 |
3,014.13 |
| RND4K Q1T1 |
83.85 |
225.07 |
IOPS (Input/Output operations per second)
| CDM | Read [IOPS] | Write [IOPS] |
|---|---|---|
| SEQ1M Q8T1 |
7,106.30 |
6,326.70 |
| SEQ1M Q1T1 |
4,534.00 |
5,517.40 |
| RND4K Q32T16 |
671,067.00 |
735,871.00 |
| RND4K Q1T1 |
20,471.90 |
54,947.80 |
Average latency
| CDM | Read [µs] | Write [µs] |
|---|---|---|
| SEQ1M Q8T1 |
1,125.14 |
1,262.38 |
| SEQ1M Q1T1 |
220.39 |
181.07 |
| RND4K Q32T16 |
760.86 |
694.31 |
| RND4K Q1T1 |
48.73 |
18.09 |
HD Tune Pro long-term test
A long-term test was performed to fully utilize the storage. You can see at what point the cache (if present) becomes full and write performance drops. A test file of 400 GB was written to the medium. The exact cache size could not be determined because the test file did not exhaust (push to the limit) the cache. The test file could at least be read with an average read speed of 6,341 MB/s and written at 5,847 MB/s.
ATTO Disk Benchmark
Here, a 256 MB file is written to the ADATA NVMe M.2 SSD multiple times. The I/O block size varies (from 512 bytes to 64 megabytes). The larger the blocks, the faster writing and reading usually becomes.
SSD-Z Benchmark
Similar to HD Tune, a 500 MB file is written to the ADATA NVMe M.2 SSD here. The transfer data is displayed. The more consistent the line, the better. Unfortunately, the tool no longer works correctly from around 4,000 MB/s and no line is displayed (and sometimes incorrect min/max data is shown).
You can find information about the test system at the bottom of the homepage.
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