SamsungMZ-77E250B
CrucialCT128M550SSD1

Controller: Samsung MKX. Memory: Samsung 128 layer TLC V-NAND. Release date: Q1 2021.

Controller: Marvell 88SS9189. Flash Memory: Micron Synchronous 20nm MLC. Release date: Q1 2014.

Real World Speed
Performance profile from 16,755 user samples
14,082 User Benchmarks
Best Bench: 128% 0GB free
Worst Bench: 67% 59GB free (System drive)
Poor: 67% Great: 128%
SPEED RANK: 259th / 1080
2,673 User Benchmarks
Best Bench: 104% 72GB free
Worst Bench: 58% 7GB free (System drive)
Poor: 58% Great: 104%
SPEED RANK: 404th / 1080
Effective Speed
Effective SSD Speed
101 % Faster effective speed.
+18%
85.6 %
Read
Avg. Sequential Read Speed
461 MB/s Slightly faster read speed.
+10%
420 MB/s
Write
Avg. Sequential Write Speed
395 MB/s Faster write speed.
+18%
335 MB/s
4K Read
Avg. 4K Random Read Speed
36.4 MB/s Much faster random read.
+36%
26.7 MB/s
4K Write
Avg. 4K Random Write Speed
81.9 MB/s 82.3 MB/s +0%
Mixed
Avg. Sequential Mixed IO Speed
365 MB/s Faster mixed IO speed.
+27%
288 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed
45.9 MB/s Faster random mixed IO.
+25%
36.8 MB/s
SusWrite
Avg. Sustained Write Speed
322 MB/s Faster sustained write speed.
+27%
253 MB/s
Read
Peak Sequential Read Speed
514 MB/s Slightly faster peak read speed.
+9%
471 MB/s
Write
Peak Sequential Write Speed
486 MB/s Much faster peak write speed.
+37%
355 MB/s
4K Read
Peak 4K Random Read Speed
49.1 MB/s Much faster peak random read.
+56%
31.5 MB/s
4K Write
Peak 4K Random Write Speed
123 MB/s Slightly faster peak random write.
+5%
117 MB/s
Mixed
Peak Sequential Mixed IO Speed
457 MB/s Much faster peak mixed IO speed.
+41%
323 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed
66.1 MB/s Much faster peak random mixed IO.
+47%
45.1 MB/s
SusWrite
Peak Sequential Sustained Write 60s Average
396 MB/s Faster peak sustained write speed.
+12%
353 MB/s
Market Share
Based on 76,492,156 SSDs tested
Market Share
Market Share (trailing 30 days)
0.04 % Insanely higher market share.
+∞%
0 %
Value
Value For Money
21.1 % Much better value.
+58%
13.3 %
User Rating
UBM User Rating
57 % More popular.
+12%
51 %
Price
Price (score)
$53 $40 Cheaper.
+25%
Age
Newest
42 Months Much more recent.
+66%
124 Months
DQ Read
Peak 4K-64Thread Read Speed
389 MB/s +2% 381 MB/s
DQ Write
Peak 4K-64Thread Write Speed
362 MB/s Faster peak deep queue write.
+10%
329 MB/s
AS-SSD Total
AS-SSD Total Score
1291 Pts Slightly stronger server IO.
+9%
1,181 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
372 MB/s Much faster peak deep queue mixed IO.
+67%
223 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed
349 MB/s Faster deep queue read.
+13%
310 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed
299 MB/s Faster deep queue write.
+12%
268 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
280 MB/s Much faster deep queue mixed IO.
+60%
175 MB/s
Capacity
Capacity
250GB 128GB
Solid State Drive Rankings (Price vs Performance) July 2024 SSD Rankings

Welcome to our 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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Group Test Results

  • Best user rated - User sentiment trumps benchmarks for this comparison.
  • Best value for money - Value for money is based on real world performance.
  • Fastest real world speed - Real World Speed measures performance for typical consumers.
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The Best
CPUGPUSSD
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Intel Core i5-12400F $110Nvidia RTX 4060-Ti $390Crucial T700 M.2 4TB $342
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