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SK Hynix Gold P31 1 TB NVMe SSD PCIe x4 Benchmarked

3000+ MB/s read and write for $135. As the first U.S.-bound NVMe SSD from SK Hynix, the Gold P31 leaves a great first impression with maximum transfer rates that are hard to beat at its target price range.
Allen Ngo 👁, 🇪🇸 🇮🇹

Announced earlier this year at CES 2020, the Gold P31 NVMe SSD from SK Hynix is finally available on Amazon for a relatively low price of $135 USD. The drive is notable for its dense 128-layer 4D NAND flash compared to half that on alternatives like the Samsung PM981 commonly found on most laptops.

The Gold P31 series is shipping only in 500 GB and 1 TB capacities for now with similar read, write, and TBW values between each of them. Enterprise or professional users can consider the Platinum P31 series where TBW is doubled (1500 TB) for increased longevity.

SK Hynix Gold P31 1 TBSamsung PM981 1 TBKingston A2000 1 TB
NAND Flash128-layer 4D NAND64-layer V-NAND96-layer TLC Flash
ControllerSK HynixPhoenixSMI SM2263EN
Sequential Read3500 MB/s3200 MB/s2200 MB/s
Sequential Write3200 MB/s2400 MB/s2000 MB/s
Warranty5 years--5 years
TBW750--600
Price$135$260$120


Test System

Eluktronics Matrix RP-17
Eluktronics Matrix RP-17

Our host system will be the 17.3-inch Eluktronics RP-17 gaming laptop equipped with the Ryzen 7 4800H and GeForce RTX 2060 GPU. The laptop supports up to two M.2 PCIe x4 2280 NVMe SSDs simultaneously to make it a good match for the Gold P31.

See our full review on the RP-17 for more information on the laptop.

No-frills packaging with signature gold crystal logo
No-frills packaging with signature gold crystal logo
SK Hynix's first branded PCIe SSD for consumers in the United States
SK Hynix's first branded PCIe SSD for consumers in the United States
M key PCIe x4 interface and 2280 form factor
M key PCIe x4 interface and 2280 form factor
The M.2 NVMe Gold P31 series shouldn't be confused with the 2.5-inch SATA III Gold S31 series
The M.2 NVMe Gold P31 series shouldn't be confused with the 2.5-inch SATA III Gold S31 series
Bio-degradable packaging. Note that no screws or thermal pads are included
Bio-degradable packaging. Note that no screws or thermal pads are included
Straight-forward installation. The drive must be initialized before it can be recognized in Windows
Straight-forward installation. The drive must be initialized before it can be recognized in Windows

AS SSD & CrystalDiskMark

CDM, AS SSD, and DiskSpd confirm the advertised read and write speeds of up to 3500 MB/s and 3200 MB/s, respectively, which are extremely fast rates considering the price. Keep in mind that you will need a PCIe x4 interface  or else performance will be limited to about 2000 MB/s.

CrystalDiskMark 7
CrystalDiskMark 7
CrystalDiskMark 5.5
CrystalDiskMark 5.5
AS SSD
AS SSD
Eluktronics SK Hynix Gold P31
 
Intel NUC8i7BEH Asura NVMe SSD
Asura Genesis Xtreme NVMe M.2 SSD 1 TB
Asus Zephyrus S17 GX701LXS
Samsung PM981a MZVLB1T0HBLR
Kingston A2000
 
Dell Precision 5000 5750 P92F
Toshiba Kioxia XG6 KXG60PNV1T02
AS SSD
-27%
-42%
-32%
-54%
Copy Game MB/s
1724.99
1577.15
-9%
1425.06
-17%
1624.04
-6%
Copy Program MB/s
1198.64
747.29
-38%
703.2
-41%
740.32
-38%
Copy ISO MB/s
1787.29
1541.93
-14%
1612.39
-10%
2609.25
46%
Score Total
6841
4454
-35%
4283
-37%
3413
-50%
3686
-46%
Score Write
3352
2193
-35%
2170
-35%
1385
-59%
1676
-50%
Score Read
2279
1502
-34%
1439
-37%
1321
-42%
1347
-41%
Access Time Write *
0.064
0.083
-30%
0.034
47%
0.075
-17%
0.116
-81%
Access Time Read *
0.02
0.031
-55%
0.064
-220%
0.024
-20%
0.08
-300%
4K-64 Write
2878.3
1828.9
-36%
1925.76
-33%
1041.08
-64%
1435.35
-50%
4K-64 Read
1991.25
1221.61
-39%
1117.55
-44%
1097.69
-45%
1105.29
-44%
4K Write
178.22
173.28
-3%
109.08
-39%
150.57
-16%
96.95
-46%
4K Read
66.73
51.94
-22%
47.24
-29%
61.02
-9%
38.77
-42%
Seq Write
2953.33
1908.19
-35%
1350.94
-54%
1935.74
-34%
1438.41
-51%
Seq Read
2211.46
2288.13
3%
2743.71
24%
1622.45
-27%
2025.39
-8%
CrystalDiskMark 5.2 / 6
9%
-22%
-6%
-27%
Write 4K
209.9
272.4
30%
120
-43%
193.7
-8%
103.5
-51%
Read 4K
60.51
57.13
-6%
45.24
-25%
70.97
17%
44.56
-26%
Write Seq
3072
2019
-34%
2090
-32%
2044
-33%
1934
-37%
Read Seq
2716
1701
-37%
2246
-17%
1992
-27%
1937
-29%
Write 4K Q32T1
453.3
844.1
86%
392.5
-13%
623
37%
372.9
-18%
Read 4K Q32T1
522.5
884.2
69%
348.4
-33%
703.6
35%
358.9
-31%
Write Seq Q32T1
3405
2110
-38%
3015
-11%
2173
-36%
2894
-15%
Read Seq Q32T1
3461
3463
0%
3445
0%
2279
-34%
3082
-11%
Write 4K Q8T8
1071.5
Read 4K Q8T8
1167
Total Average (Program / Settings)
-9% / -14%
-32% / -33%
-19% / -23%
-41% / -44%

* ... smaller is better

CDM 5/6 Read Seq Q32T1: 3461 MB/s
CDM 5/6 Write Seq Q32T1: 3405 MB/s
CDM 5/6 Read 4K Q32T1: 522.5 MB/s
CDM 5/6 Write 4K Q32T1: 453.3 MB/s
CDM 5 Read Seq: 2716 MB/s
CDM 5 Write Seq: 3072 MB/s
CDM 5/6 Read 4K: 60.51 MB/s
CDM 5/6 Write 4K: 209.9 MB/s

Disk Throttling: DiskSpd Read Loop, Queue Depth 8

010203040506070809010011012013014015016017018019020021022023024025026027028029030031032033034035036037038039040041042043044045046047048049050051052053054055056057058059060061062063064065066067068069070071072073074075076077078079080081082083084085086087088089090091092093094095096097098099010001010102010301040105010601070108010901100111011201130114011501160117011801190120012101220123012401250126012701280129013001310132013301340135013601370138013901400141014201430144014501460147014801490150015101520153015401550156015701580159016001610162016301640165016601670168016901700171017201730174017501760177017801790180018101820183018401850186018701880189019001910192019301940195019601970198019902000201020202030204020502060207020802090210021102120213021402150216021702180219022002210222022302240225022602270228022902300231023202330234023502360237023802390240024102420243024402450246024702480249025002510252025302540255025602570258025902600261026202630264026502660267026802690270027102720273027402750276027702780279028002810282028302840285028602870288028902900291029202930294029502960297029802990300030103020303030403050306030703080309031003110312031303140315031603170318031903200321032203230324032503260327032803290330033103320333033403350336033703380339034003410342034303440345034603470348034903500351035203530354035503560357035803590360036103620Tooltip
Eluktronics SK Hynix Gold P31 , : Ø3602 (3384.17-3612.02)
MSI Bravo 15 A4DCR Radeon RX 5300M, R7 4800H, Samsung PM981a MZVLB1T0HBLR: Ø3524 (2932.45-3551.11)

ATTO

ATTO tests transfer rates across a wide range of block sizes to paint a bigger overall picture of drive performance. Results show read and write rates topping out at blocks of 32 KB or greater which is earlier than what we observed on the Lexar NM610 or Kingston KC2500. The drawback, however, is the much slower performance on very small block sizes of less than 8 KB.

SK Hynix Gold P31 1 TB
SK Hynix Gold P31 1 TB
Lexar NM610 1 TB
Lexar NM610 1 TB
Kingston KC2500 1 TB
Kingston KC2500 1 TB
Western Digital SN550 1TB
Western Digital SN550 1TB
Eluktronics SK Hynix Gold P31
,
Western Digital Blue SN550 NVMe
, , Western Digital Blue SN550 NVMe SSD 1 TB WDS100T2B0C
Samsung 960 Pro 1TB
Titan X Pascal, E5-2680 v4, Samsung SSD 960 Pro 1TB m.2 NVMe
Kingston A2000
,
Intel NUC8i7BEH Asura NVMe SSD
Iris Plus Graphics 655, i7-8559U, Asura Genesis Xtreme NVMe M.2 SSD 1 TB
Walmart EVOO Gaming 17 Lexar NM610
, , Lexar NM610 1TB
ATTO Disk Benchmark
-42%
-21%
-36%
-25%
-47%
8192KB write
3260000
1830000
-44%
2079890
-36%
2000000
-39%
1960000
-40%
1570000
-52%
4096KB write
3260000
1760000
-46%
2090010
-36%
2000000
-39%
1960000
-40%
1580000
-52%
2048KB write
3260000
1760000
-46%
2090010
-36%
1860000
-43%
1970000
-40%
1580000
-52%
1024KB write
3260000
1780000
-45%
2100230
-36%
1760000
-46%
1960000
-40%
1610000
-51%
512KB write
3260000
1810000
-44%
2090010
-36%
1940000
-40%
1960000
-40%
1600000
-51%
256KB write
3250000
1780000
-45%
2098690
-35%
2000000
-38%
1920000
-41%
1470000
-55%
128KB write
3240000
1780000
-45%
2078800
-36%
2000000
-38%
1940000
-40%
1580000
-51%
64KB write
3240000
1740000
-46%
2073620
-36%
1920000
-41%
1870000
-42%
1550000
-52%
32KB write
3080000
1640000
-47%
2054220
-33%
1760000
-43%
1620000
-47%
1510000
-51%
16KB write
1760000
1390000
-21%
1102410
-37%
1410000
-20%
1160000
-34%
1150000
-35%
8192KB read
3360000
2260000
-33%
2960680
-12%
2030000
-40%
2970000
-12%
1910000
-43%
4096KB read
3360000
2310000
-31%
3019900
-10%
2060000
-39%
2960000
-12%
1930000
-43%
2048KB read
3270000
2290000
-30%
3026480
-7%
1990000
-39%
2920000
-11%
1940000
-41%
1024KB read
3170000
2260000
-29%
3263860
3%
1870000
-41%
2860000
-10%
1940000
-39%
512KB read
3050000
1630000
-47%
3197250
5%
2060000
-32%
2820000
-8%
1860000
-39%
256KB read
2890000
2280000
-21%
3230230
12%
2080000
-28%
3080000
7%
1870000
-35%
128KB read
3020000
2070000
-31%
3003310
-1%
2070000
-31%
2670000
-12%
1700000
-44%
64KB read
3000000
1430000
-52%
2458920
-18%
2030000
-32%
2550000
-15%
1480000
-51%
32KB read
2780000
917140
-67%
2432300
-13%
1730000
-38%
2190000
-21%
1210000
-56%
16KB read
1600000
550840
-66%
1257110
-21%
1450000
-9%
1440000
-10%
799250
-50%

Data Compression

SK Hynix Gold P31 1 TB
SK Hynix Gold P31 1 TB
Kingston A2000 1TB
Kingston A2000 1TB
Kingston KC2500 1 TB
Kingston KC2500 1 TB
Western Digital SN550 1TB
Western Digital SN550 1TB

Temperature

CDM 7 stress. Temperatures reach up to 57 C when running running the benchmark twice in a row
CDM 7 stress. Temperatures reach up to 57 C when running running the benchmark twice in a row

Verdict

Test unit provided by SK Hynix
Test unit provided by SK Hynix

Achieving both read and write rates of over 3000 MB/s each on a 1 TB SSD at this price range helps the Gold P31 stand out from competitors. It's a value drive that doesn't sacrifice performance when moving large files.

The main disadvantage of the drive is its slow performance when reading and writing small block sizes. Though most SSDs are poor in this regard, the P31 is notably worse at one-half or even one-fifth the speeds of the Lexar NM610 or Kingston KC2500 for <4 KB block sizes. If your workloads involve countless small files instead of larger ones, then we recommend looking elsewhere. For everyone else, the value and performance proposition of the Gold P31 series is hard to beat.

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> Notebook / Laptop Reviews and News > Reviews > SK Hynix Gold P31 1 TB NVMe SSD PCIe x4 Benchmarked
Allen Ngo, 2020-09- 4 (Update: 2020-09-11)
Allen Ngo
Allen Ngo - US Editor in Chief
After graduating with a B.S. in environmental hydrodynamics from the University of California, I studied reactor physics to become licensed by the U.S. NRC to operate nuclear reactors. There's a striking level of appreciation you gain for everyday consumer electronics after working with modern nuclear reactivity systems astonishingly powered by computers from the 80s. When I'm not managing day-to-day activities and US review articles on Notebookcheck, you can catch me following the eSports scene and the latest gaming news.