KingSpec NX 512GB M.2 SSD

Here you will find a detailed speed, performance and benchmark test review. Tested was the M.2 NVMe SSD NX with 512GB (NX-512GB 2280) from the brand KingSpec.

Performance score 
3252
Price/GB
0.18 $
Read
3,500 MB/s
 Write
3,500 MB/s
Connector
M.2 2280
Interface
PCIe 3.0 x4
Technical specifications (manufacturer information)
Product image Product image NX
Manufacturer KingSpec  
Model number NX-512GB 2280
Capacity 512 GB (477 GiB)
pSLC cache 68 GB approx.
Read speed 3500 MB/s
Write speed 3500 MB/s
Interface PCIe 3.0 x4
Connector M.2 2280
Memory module (NAND) TLC
DRAM cache No
TBW (Total Bytes Written) 500 terabyte
Warranty 3 Years
Controller Maxio MAP1202

Product
Score
Price
KingSpec NX 1TB
3804
150 $
  Current price
~ 90 $
(= 0.18 $ / GB)
In stock
Buy now  
Retailer     #ad
Compare product Compared to the test winner*
Read speed
99 %
Write speed
70 %
*) Test result rated by AS SSD score within the same capacity.
v0.37a
OS: 10.0 build 19045 
Drive   : 0(NVME)
Scsi    : 2
Driver  : W10
Model   : NX-512 2280                             
Fw      : SN12350 
HMB     : 16384 - 16384 KB (Enabled, 16 M)
Size    : 488386 MB [512.1 GB]
LBA Size: 512
AdminCmd: 0x00 0x01 0x02 0x04 0x05 0x06 0x08 0x09 0x0A 0x0C 0x10 0x11 0x14 0x80 0x81 0x82 0x84 0xC1 0xC2
I/O Cmd : 0x00 0x01 0x02 0x04 0x05 0x08 0x09
Firmware id string[1C0]	: MKSSD_501003000123500000,Sep  4 2023,11:58:15,MAP1202,MRRHCDLC
Project id string[180]	: r:/00_release/13_Release_12350/Release_Trunk_12350
Controller		: MAP1202
NAND string		: CYAxxTC1B1xC6C
NAND MaxPE cycles	: 3000
NAND Freq		: 1600
Channel number		: 4
CE number		: 2
Total bank		: 8
Flash type		: TLC
Blocks/CE		: 1980
Pages/Block		: 2304
Page size		: 16
Planes(?)		: 4
Die/CE			: 1
HSPD capacity		: 150
HSPD blocks		: 17
Normal blocks		: 477
Ch0CE0: 0x9b,0xc4,0x28,0x49,0x20,0x0,0x0 - YMTC 3dv3-128L(x2-9060) TLC 16k 512Gb/CE 512Gb/die 4Plane/die
Ch1CE0: 0x9b,0xc4,0x28,0x49,0x20,0x0,0x0 - YMTC 3dv3-128L(x2-9060) TLC 16k 512Gb/CE 512Gb/die 4Plane/die
Ch2CE0: 0x9b,0xc4,0x28,0x49,0x20,0x0,0x0 - YMTC 3dv3-128L(x2-9060) TLC 16k 512Gb/CE 512Gb/die 4Plane/die
Ch3CE0: 0x9b,0xc4,0x28,0x49,0x20,0x0,0x0 - YMTC 3dv3-128L(x2-9060) TLC 16k 512Gb/CE 512Gb/die 4Plane/die
Ch0CE2: 0x9b,0xc4,0x28,0x49,0x20,0x0,0x0 - YMTC 3dv3-128L(x2-9060) TLC 16k 512Gb/CE 512Gb/die 4Plane/die
Ch1CE2: 0x9b,0xc4,0x28,0x49,0x20,0x0,0x0 - YMTC 3dv3-128L(x2-9060) TLC 16k 512Gb/CE 512Gb/die 4Plane/die
Ch2CE2: 0x9b,0xc4,0x28,0x49,0x20,0x0,0x0 - YMTC 3dv3-128L(x2-9060) TLC 16k 512Gb/CE 512Gb/die 4Plane/die
Ch3CE2: 0x9b,0xc4,0x28,0x49,0x20,0x0,0x0 - YMTC 3dv3-128L(x2-9060) TLC 16k 512Gb/CE 512Gb/die 4Plane/die

We put the KingSpec 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 3252 points was achieved.

AS SSD Benchmark Screenshot: TEST: KingSpec NX 512GB M.2 SSD
AS SSD Read: Write:
Seq
in megabytes per second
3,237.97 MB/s
2,197.60 MB/s
4K
in megabytes per second
54.41 MB/s
149.29 MB/s
4K-64Thrd
in megabytes per second
824.99 MB/s
1,103.14 MB/s
Access time
in milliseconds
0.025 ms
0.645 ms
Score
1203
1472
Total score 
3252

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 17 July 2025 shows performance during simultaneous write and read operations. The lower the duration, the better.

AS SSD TEST: KingSpec NX 512GB M.2 SSD
AS SSD Copy Benchmark Transfer rate: Duration:
ISO
two large files
2,124.08 MB/s
1.08 s
Program
typical program folder with many small files
1,107.54 MB/s
6.36 s
Game
a game folder with small and large files
1,879.89 MB/s
3.67 s

Compression performance test

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

AS SSD TEST: KingSpec NX 512GB 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: 3500 MB/s and 3500 MB/s) the KingSpec SSD is measured.

CrystalDiskMark Benchmark Screenshot: TEST: KingSpec NX 512GB M.2 SSD
CDM Read [MB/s] Write [MB/s]
SEQ1M
Q8T1
3,650.33
2,330.34
SEQ1M
Q1T1
2,776.18
2,335.02
RND4K
Q32T16
916.47
1,342.37
RND4K
Q1T1
64.09
174.01

IOPS (Input/Output operations per second)

CDM Read [IOPS] Write [IOPS]
SEQ1M
Q8T1
3,481.20
2,222.40
SEQ1M
Q1T1
2,647.60
2,226.90
RND4K
Q32T16
223,747.00
327,726.00
RND4K
Q1T1
15,646.70
42,482.70

Average latency

CDM Read [µs] Write [µs]
SEQ1M
Q8T1
2,296.93
3,592.80
SEQ1M
Q1T1
377.53
448.81
RND4K
Q32T16
2,284.82
1,560.95
RND4K
Q1T1
63.77
23.41

ATTO Disk Benchmark

Here, a 256 MB file is written to the KingSpec 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: KingSpec NX 512GB M.2 SSD

SSD-Z Benchmark

Similar to HD Tune, a 500 MB file is written to the KingSpec 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: KingSpec NX 512GB M.2 SSD


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