TEST: KingSpec P3 256GB SATA SSD

Here you can find a detailed performance and benchmark test of the SATA SSD P3 with 256GB (P3-256) from KingSpec.
Score
651
Price/GB
0,09 €


Technical data
Image P3
Manufacturer KingSpec
Model number P3-256
Storage capacity 256 GB (238 GiB)
pSLC-Cache 47 GB approx.
Read speed 550 MB/s
Write speed 500 MB/s
Interface SATA 6 Gbps
Connection 2.5"
Memory module (NAND) QLC
TBW (Total Bytes Written) 120 Terabyte
Controller Silicon Motion SM2259XT
Price ca. 22 USD (= 0,09 $ / GB)
Paid link Buy on Amazon
Compare Product
Compared to the top performer*
Read speed
96 %
Write speed
100 %

*) 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 1 GB file. A total score of 651 points was achieved.

AS SSD TEST: KingSpec P3 256GB

AS SSD Read: Write:
Seq
in megabytes per second
504,03 MB/s
448,41 MB/s
4K
in megabytes per second
24,39 MB/s
83,59 MB/s
4K-64Thrd
in megabytes per second
147,27 MB/s
180,53 MB/s
Access time
in milliseconds
0,047 ms
0,126 ms
Score
222
309
Total score
651

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 March 06, 2025 shows the performance for simultaneous write and read operations. The lower the duration, the better the performance.

AS SSD TEST: KingSpec P3 256GB
AS SSD Copy-Benchmark Transfer rate: Duration:
ISO
two large files
932,51 MB/s
1,15 s
Program
many small files
1103,34 MB/s
1,28 s
Game
small and large files
1907,12 MB/s
0,72 s

Compression Performance Test

This measures the write and read speed of the KingSpec SATA SSD, depending on the compressibility of the data (according to the manufacturer, these should be 550 MB/s and 500 MB/s respectively ).

AS SSD TEST: KingSpec P3 256GB

CrystalDiskMark Benchmark

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

CrystalDiskMark Benchmark TEST: KingSpec P3 256GB
CDM Read [MB/s] Write [MB/s]
SEQ1M
Q8T1
522,52
475,96
SEQ1M
Q1T1
495,79
456,70
RND4K
Q32T16
226,75
192,23
RND4K
Q1T1
38,08
87,09

Input/Output operations per second

CDM Read [IOPS] Write [IOPS]
SEQ1M
Q8T1
498,30
453,90
SEQ1M
Q1T1
472,80
435,50
RND4K
Q32T16
55.358,40
46.930,40
RND4K
Q1T1
9.295,90
21.261,20

Average latency

CDM Read [µs] Write [µs]
SEQ1M
Q8T1
16.019,10
17.560,00
SEQ1M
Q1T1
2.114,46
2.295,18
RND4K
Q32T16
9.232,90
10.888,70
RND4K
Q1T1
107,45
46,92

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 100 GB was written to the medium. After approx. 47 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 495 MB/s and written with 102 MB/s.

HD Tune Endurance Test TEST: KingSpec P3 256GB

HD Tune Pro Benchmark

HD Tune writes a 1 GB file to the KingSpec SATA SSD. The transfer data of the read speed is displayed graphically. The minimum, maximum and average values are also determined. The determined access time and burst rate are also displayed.

HD Tune TEST: KingSpec P3 256GB

ATTO Disk Benchmark

Here, a 256 MB file is written several times to the KingSpec SATA 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: KingSpec P3 256GB

SSD-Z Benchmark

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

SSD-Z TEST: KingSpec P3 256GB


Information about the test system can be found at the bottom of the home page.
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