TEST: ADATA LEGEND 800 500GB M.2 SSD

Here you can find a detailed performance and benchmark test of the M.2 NVMe SSD LEGEND 800 with 500GB (ALEG-800-500GCS) from ADATA.
Score
5028
Price/GB
0,10 $


Technical data
Image LEGEND 800
Manufacturer ADATA
Model number ALEG-800-500GCS
Storage capacity 500 GB (466 GiB)
pSLC-Cache 176 GB approx.
Read speed 3500 MB/s
Write speed 2200 MB/s
Interface PCIe 4.0 x4
Connection M.2 2280
Memory module (NAND) TLC
DRAM Cache no
TBW (Total Bytes Written) 300 Terabyte
Controller Realtec RTS5770DL
Price ca. 49 USD (= 0,10 $ / GB)
Paid link Buy on Amazon
Compare Product
Compared to the top performer*
Read speed
57 %
Write speed
72 %

*) Test result evaluated according to AS SSD Score within the same size.

AS SSD Benchmark

Standard performance test

The standard test was performed using a 5 GB file. A total score of 5028 points was achieved.

AS SSD TEST: ADATA LEGEND 800 500GB

AS SSD Read: Write:
Seq
in megabytes per second
3777,33 MB/s
3789,50 MB/s
4K
in megabytes per second
60,91 MB/s
150,06 MB/s
4K-64Thrd
in megabytes per second
1431,62 MB/s
1663,02 MB/s
Access time
in milliseconds
0,024 ms
0,131 ms
Score
1870
2192
Total score
5028

Copy Performance Test

A common everyday situation 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 (the cache remains enabled). The practical test of July 22, 2025 shows the performance for simultaneous write and read operations. The lower the duration, the better the performance.

AS SSD TEST: ADATA LEGEND 800 500GB
AS SSD Copy-Benchmark Transfer rate: Duration:
ISO
two large files
2076,80 MB/s
1,11 s
Program
many small files
1140,96 MB/s
6,17 s
Game
small and large files
1867,14 MB/s
3,70 s

Compression Performance Test

This measures the write and read speed of the ADATA SSD, depending on the compressibility of the data (according to the manufacturer, these should be 3500 MB/s and 2200 MB/s respectively ).

AS SSD TEST: ADATA LEGEND 800 500GB

CrystalDiskMark Benchmark

Here, two sequential and two random performance tests are performed, similar to the ones performed on the AS SSD.

CrystalDiskMark Benchmark TEST: ADATA LEGEND 800 500GB
CDM Read [MB/s] Write [MB/s]
SEQ1M
Q8T1
4267,12
4119,27
SEQ1M
Q1T1
3147,04
4115,36
RND4K
Q32T16
1827,14
2002,46
RND4K
Q1T1
65,93
164,42

Input/Output operations per second

CDM Read [IOPS] Write [IOPS]
SEQ1M
Q8T1
4.069,40
3.928,40
SEQ1M
Q1T1
3.001,30
3.924,70
RND4K
Q32T16
446.080,00
488.882,00
RND4K
Q1T1
16.097,20
40.141,80

Average latency

CDM Read [µs] Write [µs]
SEQ1M
Q8T1
1.964,60
2.031,74
SEQ1M
Q1T1
333,04
254,61
RND4K
Q32T16
1.144,59
1.046,33
RND4K
Q1T1
62,00
24,80

HD Tune Pro Endurance test

This is a long term test to make full use of the memory capacity. You can see when a cache is full and the writing performance decreases. A test file of 200 GB was written to the medium. After approx. 176 GB, the pSLC-Cache was full and the performance was throttled.
At least the test file could be read with an average write speed of 2953 MB/s and written with 1434 MB/s.

HD Tune Endurance Test TEST: ADATA LEGEND 800 500GB

ATTO Disk Benchmark

Here, a 256 MB file is written several times to the ADATA M.2 SSD. The I/O block size varies (from 512 bytes to 64 megabytes). The larger the blocks, the faster they were written and read.

ATTO Disk Benchmark TEST: ADATA LEGEND 800 500GB

SSD-Z Benchmark

Similar to HD Tune, a 500 MB file is written to the ADATA M.2 SSD here. The transfer data is displayed. The more constant the line, the better.

SSD-Z TEST: ADATA LEGEND 800 500GB


Information about the test system can be found at the bottom of the home page.
As an Amazon Associate I earn from qualifying purchases.