Pm991a

NVMe Samsung 1024GB

NVMe Samsung 1024GB
BENCHMARKS (421)
MKT (0%)
BUILDS
(0)

Effective Speed +119% Effective Speed 119%Average Score +136% Read 187%, Write 219%, 4K Read 35%, 4K Write 32%, Mixed 211%, 4K Mixed 34%, SusWrite 235%Peak Score +169% Read 228%, Write 296%, 4K Read 33%, 4K Write 37%, Mixed 288%, 4K Mixed 43%, SusWrite 258%Value & Sentiment -432%User Rating -14%, Market Share -850%Nice To Haves +220% DQ Read 306%, DQ Write 240%, DQ Mixed 267%, ADQ Read 229%, ADQ Write 127%, ADQ Mixed 215%, Age 140%, AS-SSD Total 238%

Average Bench: 216% (87^th of 1072)

Based on 421 user benchmarks. Model: PM991a NVMe Samsung 1024GB

Poor: 106%Average: 216% Great: 295%

Popular builds with this SSD

Outstanding average bench

The Pm991a NVMe Samsung 1024GB averaged 115.8% higher than the peak scores attained by the group leaders. This is an excellent result which ranks the Pm991a NVMe Samsung 1024GB near the top of the comparison list.

Strengths

Avg. 4K-64Thread Mixed IO Speed 819MB/s

Avg. 4K-64Thread Read Speed 1,073MB/s

See where your SSD ranks →

Terrible consistency

The range of scores (95th - 5th percentile) for the Pm991a NVMe Samsung 1024GB is 189%. This is a particularly wide range which indicates that the Pm991a NVMe Samsung 1024GB performs inconsistently under varying real world conditions.

Weaknesses

Avg. 4K Random Write Speed 116MB/s

Avg. 4K Random Read Speed 46.3MB/s

Average Bench

(Based on 421 samples)

Rank 87216%

Min	Avg	Max
752	Read 1,314	1,660
229	Write 1,293	1,918
201	Mixed 1,116	1,641
142	SusWrite 994	1,387
265% 1,179 MB/s

Min	Avg	Max
24	4K Read 46.3	57.2
49.9	4K Write 116	168
30.7	4K Mixed 60.2	83.2
209% 74.3 MB/s

Min	Avg	Max
548	DQ Read 1,073	1,489
137	DQ Write 655	1,217
194	DQ Mixed 819	1,217
622% 849 MB/s

User Benchmarks

Bench

Sequential

Random 4k

Deep queue 4k

The fastest SSD (mainstream) averages a speed of 100%

SVK-User, 1 month ago.

565GB free (System drive)

Firmware: 26304039 Max speed: PCIe 16,000 MB/s

SusWrite @10s intervals: 1974 1999 1926 1729 577 361 MB/s

283% Outstanding

Write 1,538

Mixed 1,390

SusWrite 1,428

322% 1,425 MB/s

4K Read 47.8

4K Write 183

4K Mixed 74.7

265% 102 MB/s

DQ Read 1,486

DQ Write 1,227

DQ Mixed 1220

951% 1,311 MB/s

TUR-User, 1 month ago.

550GB free (System drive)

Firmware: 26304039 Max speed: PCIe 16,000 MB/s

SusWrite @10s intervals: 1868 1870 1656 1367 624 467 MB/s

224% Outstanding

Write 1,606

Mixed 1,336

SusWrite 1,309

321% 1,422 MB/s

4K Read 37.4

4K Write 106

4K Mixed 59.6

189% 67.7 MB/s

DQ Read 713

DQ Write 489

DQ Mixed 641

468% 614 MB/s

AUS-User, 9 days ago.

846GB free (System drive)

Firmware: 26304039 Max speed: PCIe 16,000 MB/s

SusWrite @10s intervals: 1805 1785 1750 1496 878 291 MB/s

213% Outstanding

Write 1,785

Mixed 1,104

SusWrite 1,334

295% 1,298 MB/s

4K Read 39.3

4K Write 86.2

4K Mixed 53

173% 59.5 MB/s

DQ Read 990

DQ Write 780

DQ Mixed 879

660% 883 MB/s

USA-User, 1 month ago.

447GB free (System drive)

Firmware: 26304039 Max speed: PCIe 16,000 MB/s

SusWrite @10s intervals: 155 165 198 186 184 213 MB/s

151% Outstanding

Write 483

Mixed 366

SusWrite 183

125% 572 MB/s

4K Read 38.1

4K Write 105

4K Mixed 51.1

179% 64.9 MB/s

DQ Read 1,244

DQ Write 307

DQ Mixed 364

374% 638 MB/s

ITA-User, 21 days ago.

227GB free (System drive)

Firmware: 26304039 Max speed: PCIe 16,000 MB/s

SusWrite @10s intervals: 147 146 170 136 133 140 MB/s

142% Outstanding

Write 219

Mixed 272

SusWrite 145

99% 459 MB/s

4K Read 36.8

4K Write 125

4K Mixed 47.4

182% 69.6 MB/s

DQ Read 1,121

DQ Write 203

DQ Mixed 473

395% 599 MB/s

USA-User, 1 month ago.

98GB free (System drive)

Firmware: 26304039 Max speed: PCIe 16,000 MB/s

SusWrite @10s intervals: 139 136 153 188 147 147 MB/s

94.5% Outstanding

Write 140

Mixed 208

SusWrite 152

73% 336 MB/s

4K Read 22.1

4K Write 69.5

4K Mixed 26.7

104% 39.4 MB/s

DQ Read 741

DQ Write 139

DQ Mixed 242

229% 374 MB/s

GBR-User, 1 day ago.

252GB free (System drive)

Firmware: 26304039 Max speed: PCIe 16,000 MB/s

SusWrite @10s intervals: 144 177 156 139 139 125 MB/s

93.6% Outstanding

Write 440

Mixed 310

SusWrite 147

87% 395 MB/s

4K Read 24.3

4K Write 70.6

4K Mixed 36

120% 43.6 MB/s

DQ Read 696

DQ Write 199

DQ Mixed 316

267% 403 MB/s

421 MORE »

Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 75,658,497 SSDs tested

Custom PC Builder (Start a new build) Build your perfect PC: compare component prices, popularity, speed and value for money

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CPU

GPU

SSD

HDD

RAM

MBD

Typical NVMe Samsung 1024GB Builds (Compare 2,780 builds) See popular component choices, score breakdowns and rankings

Gaming 14%

Tree trunk

Desktop 84%

Aircraft carrier

Workstation 14%

Tree trunk

System: Dell G15 5511

CPU
Core i7-11800HIntelBench 88%, 56,029 samples	1,842x
Core i5-11400HIntelBench 80%, 35,470 samples	503x
Gen Intel Core i5-11260H11thBench 72%, 2,929 samples	431x

GPU
UHD GraphicsIntelBench 7%, 53,008 samples	945x
RTX 3060 (Laptop)NvidiaBench 90%, 102,706 samples	607x
UHD GraphicsIntelBench 4%, 25,082 samples	508x

SSD
NVMe Samsung 1024GBPm991aBench 216%, 421 samples	1x

RAM
HMAA1GS6CJR6N-XN 2x8GBUnknownBench 65%, 26,875 samples	775x
M471A1G44BB0-CWE 2x8GBSamsungBench 64%, 6,868 samples	318x
4ATF1G64HZ-3G2E2 2x8GBUnknownBench 71%, 3,640 samples	291x

EDIT WITH CUSTOM PC BUILDER

Popular NVMe Samsung 1024GB systems:

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Welcome to our 2.5" and M.2 SSD comparison. We calculate effective speed for both SATA and NVMe drives based on real world performance then adjust by current prices per GB to yield a value for money rating. Our calculated values are checked against thousands of individual user ratings. The customizable table below combines these factors to bring you the definitive list of top SSDs. ^[SSDrivePro]

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CPU	GPU	SSD
Intel Core i5-13600K $279	Nvidia RTX 4060 $300	Crucial MX500 250GB $40
Intel Core i5-12400F $134	Nvidia RTX 4060-Ti $385	Samsung 850 Evo 120GB $80
Intel Core i5-12600K $184	Nvidia RTX 4070 $409	Samsung 860 Evo 250GB $52

HDD	RAM	USB
Seagate Barracuda 1TB (2016) $39	Corsair Vengeance LPX DDR4 3200 C16 2x8GB $40	SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $35	Corsair Vengeance LPX DDR4 3000 C15 2x8GB $43	SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $51	G.SKILL Trident Z DDR4 3200 C14 4x16GB $351	SanDisk Ultra Fit 32GB $16

Pm991a

NVMe Samsung 1024GB

Average Bench: 216% (87^th of 1072)

Popular builds with this SSD

Outstanding average bench

Strengths

Terrible consistency

Weaknesses

Average Bench

Market Share (See Leaders)

CHOOSE A COMPONENT:

System: Dell G15 5511

Popular NVMe Samsung 1024GB systems:

UserBenchmark of the month

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Group Test Results

Comments

Speed Comparisons

Frequently Asked Questions

Best User Rated

Pm991a

NVMe Samsung 1024GB

Average Bench: 216% (87th of 1072)

Popular builds with this SSD

Outstanding average bench

Strengths

Terrible consistency

Weaknesses

Average Bench

Market Share (See Leaders)

CHOOSE A COMPONENT:

System: Dell G15 5511

Popular NVMe Samsung 1024GB systems:

UserBenchmark of the month

How it works

Group Test Results

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Comments

Speed Comparisons

Frequently Asked Questions

Best User Rated

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Average Bench: 216% (87^th of 1072)