ADATA LEGEND 860 1TB 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 1TB (SLEG-860-1000GCS) from the brand ADATA.

Performance score 
7633
Price/GB
0.18 $
Read
6,000 MB/s
 Write
4,000 MB/s
Connector
M.2 2280
Interface
PCIe 4.0 x4
Technical specifications (manufacturer information)
Product image Product image LEGEND 860
Manufacturer ADATA  
Model number SLEG-860-1000GCS
Capacity 1024 GB (932 GiB)
pSLC cache 250 GB approx.
Read speed 6000 MB/s
Write speed 4000 MB/s
Interface PCIe 4.0 x4
Connector M.2 2280
DRAM cache ✓ Yes
TBW (Total Bytes Written) 320 terabyte
Warranty 5 Years
Controller Silicon Motion SM2268XT2

Product
Score
Price
ADATA LEGEND 860 2TB
7629
290 $
ADATA LEGEND 860 500GB
5670
153 $
  Current price
~ 187 $
(= 0.18 $ / GB)
In stock
Buy now  
Retailer     #ad
Compare product Compared to the test winner*
Read speed
100 %
Write speed
90 %
*) Test result rated by AS SSD score within the same capacity.

v0.273a
OS: 10.0 build 19045 
Drive     : 0(NVME)
Scsi      : 2
Driver    : W10
Model     : ADATA LEGEND 860                        
Fw        : 1014A   
HMB       : 65536 - 65536 KB (Enabled, 64 M)
Size      : 953869 MB [1000.2 GB]
LBA Size  : 512
AdminCmd  : 0x00 0x01 0x02 0x04 0x05 0x06 0x08 0x09 0x0A 0x0C 0x10 0x11 0x14 0x80 0x81 0x82 0x84 0xC0 0xC1 0xC2 0xE0 0xE1 0xF0 0xF1 0xF2
I/O Cmd   : 0x00 0x01 0x02 0x04 0x05 0x08 0x09 0x0C
Controller:  [SM2268XT] bufferless
Bank00: 0x9b,0xc5,0x5c,0x55,0x30,0x0,0x0,0x0 - YMTC 3dv4-232L(x3-6070) QLC 16k 1024Gb/CE 1024Gb/die 4Plane/die
Bank01: 0x9b,0xc5,0x5c,0x55,0x30,0x0,0x0,0x0 - YMTC 3dv4-232L(x3-6070) QLC 16k 1024Gb/CE 1024Gb/die 4Plane/die
Bank02: 0x9b,0xc5,0x5c,0x55,0x30,0x0,0x0,0x0 - YMTC 3dv4-232L(x3-6070) QLC 16k 1024Gb/CE 1024Gb/die 4Plane/die
Bank03: 0x9b,0xc5,0x5c,0x55,0x30,0x0,0x0,0x0 - YMTC 3dv4-232L(x3-6070) QLC 16k 1024Gb/CE 1024Gb/die 4Plane/die
Bank08: 0x9b,0xc5,0x5c,0x55,0x30,0x0,0x0,0x0 - YMTC 3dv4-232L(x3-6070) QLC 16k 1024Gb/CE 1024Gb/die 4Plane/die
Bank09: 0x9b,0xc5,0x5c,0x55,0x30,0x0,0x0,0x0 - YMTC 3dv4-232L(x3-6070) QLC 16k 1024Gb/CE 1024Gb/die 4Plane/die
Bank10: 0x9b,0xc5,0x5c,0x55,0x30,0x0,0x0,0x0 - YMTC 3dv4-232L(x3-6070) QLC 16k 1024Gb/CE 1024Gb/die 4Plane/die
Bank11: 0x9b,0xc5,0x5c,0x55,0x30,0x0,0x0,0x0 - YMTC 3dv4-232L(x3-6070) QLC 16k 1024Gb/CE 1024Gb/die 4Plane/die
Channel: 4
CE     : 2
Plane  : 4
Die/Ce : 1
Ch map : 0x0F
CE map : 0x05
Bit Per Cell  : (SLC)
Inter.        : 2
Pages/Block   : 5544(1392)
First Fblock  :    1
Total Fblock  :  403
Total Hblock  : 59617
Fblock Per Ce :  403
Fblock Per Die:  403
Original Spare Block Count :    21
Vendor Marked Bad Block    :     0
Bad Block From Pretest     :     3
IOCtl: NVME_W10_GetLog 0x45d!

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 7633 points was achieved.

AS SSD Benchmark Screenshot: TEST: ADATA LEGEND 860 1TB M.2 SSD
AS SSD Read: Write:
Seq
in megabytes per second
6,175.33 MB/s
5,350.29 MB/s
4K
in megabytes per second
62.41 MB/s
178.12 MB/s
4K-64Thrd
in megabytes per second
2,302.45 MB/s
2,456.80 MB/s
Access time
in milliseconds
0.020 ms
0.347 ms
Score
2982
3170
Total score 
7633

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 TEST: ADATA LEGEND 860 1TB M.2 SSD
AS SSD Copy Benchmark Transfer rate: Duration:
ISO
two large files
2,057.34 MB/s
1.12 s
Program
typical program folder with many small files
1,133.50 MB/s
6.21 s
Game
a game folder with small and large files
1,827.88 MB/s
3.78 s

Compression performance test

Here, speed is measured depending on how compressible the data is.

AS SSD TEST: ADATA LEGEND 860 1TB M.2 SSD

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 4000 MB/s) the ADATA SSD is measured.

CrystalDiskMark Benchmark Screenshot: TEST: ADATA LEGEND 860 1TB M.2 SSD
CDM Read [MB/s] Write [MB/s]
SEQ1M
Q8T1
7,453.15
6,193.60
SEQ1M
Q1T1
4,593.05
4,868.84
RND4K
Q32T16
3,649.89
3,015.83
RND4K
Q1T1
77.29
192.24

IOPS (Input/Output operations per second)

CDM Read [IOPS] Write [IOPS]
SEQ1M
Q8T1
7,107.90
5,906.70
SEQ1M
Q1T1
4,380.30
4,643.30
RND4K
Q32T16
891,087.00
736,286.00
RND4K
Q1T1
18,868.70
46,934.30

Average latency

CDM Read [µs] Write [µs]
SEQ1M
Q8T1
1,124.59
1,351.98
SEQ1M
Q1T1
228.14
215.15
RND4K
Q32T16
556.06
692.11
RND4K
Q1T1
52.88
21.18

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.

ATTO Disk Benchmark TEST: ADATA LEGEND 860 1TB M.2 SSD

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).

SSD-Z TEST: ADATA LEGEND 860 1TB M.2 SSD


You can find information about the test system at the bottom of the homepage.
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