KingstonSKC300S37A/60G
CrucialCT256M550SSD1
$152

Controller: SandForce SF2281. Flash Memory: Toshiba 19nm Toggle Mode. Release date ≤ Q2 2014.

 $152 

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

Real World Speed
Performance profile from 9,008 user samples
675 User Benchmarks
Best Bench: 79% 39GB free
Worst Bench: 51% 44GB free (System drive)
Poor: 51% Great: 79%
SPEED RANK: 745th / 1080
8,333 User Benchmarks
Best Bench: 113% 106GB free
Worst Bench: 60% 231GB free
Poor: 60% Great: 113%
SPEED RANK: 328th / 1080
Effective Speed
Effective SSD Speed
65.6 % 90.5 % Much faster effective speed.
+38%
Read
Avg. Sequential Read Speed
364 MB/s 418 MB/s Faster read speed.
+15%
Write
Avg. Sequential Write Speed
126 MB/s 416 MB/s Hugely faster write speed.
+230%
4K Read
Avg. 4K Random Read Speed
28.9 MB/s Slightly faster random read.
+7%
27.1 MB/s
4K Write
Avg. 4K Random Write Speed
72.6 MB/s 85 MB/s Faster random write.
+17%
Mixed
Avg. Sequential Mixed IO Speed
175 MB/s 299 MB/s Much faster mixed IO speed.
+71%
4K Mixed
Avg. 4K Random Mixed IO Speed
35.3 MB/s 37.9 MB/s Slightly faster random mixed IO.
+7%
SusWrite
Avg. Sustained Write Speed
102 MB/s 311 MB/s Hugely faster sustained write speed.
+205%
Read
Peak Sequential Read Speed
434 MB/s 466 MB/s Slightly faster peak read speed.
+7%
Write
Peak Sequential Write Speed
137 MB/s 470 MB/s Hugely faster peak write speed.
+243%
4K Read
Peak 4K Random Read Speed
36.7 MB/s Faster peak random read.
+15%
31.9 MB/s
4K Write
Peak 4K Random Write Speed
110 MB/s 118 MB/s Slightly faster peak random write.
+7%
Mixed
Peak Sequential Mixed IO Speed
197 MB/s 333 MB/s Much faster peak mixed IO speed.
+69%
4K Mixed
Peak 4K Random Mixed IO Speed
45.2 MB/s 46.4 MB/s +3%
SusWrite
Peak Sequential Sustained Write 60s Average
119 MB/s 459 MB/s Hugely faster peak sustained write speed.
+286%
Market Share
Based on 76,180,900 SSDs tested
Market Share
Market Share (trailing 30 days)
0 % 0.03 % Insanely higher market share.
+∞%
Value
Value For Money
4.48 % 8.68 % Hugely better value.
+94%
User Rating
UBM User Rating
50 % 52 % +4%
Price
Price (score)
$56 Much cheaper.
+63%
$152
Age
Newest
121+ Months +1% 122 Months
DQ Read
Peak 4K-64Thread Read Speed
141 MB/s 387 MB/s Hugely faster peak deep queue read.
+174%
DQ Write
Peak 4K-64Thread Write Speed
138 MB/s 361 MB/s Hugely faster peak deep queue write.
+162%
AS-SSD Total
AS-SSD Total Score
597 Pts 1,240 Pts Hugely stronger server IO.
+108%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
134 MB/s 240 MB/s Much faster peak deep queue mixed IO.
+79%
ADQ Read
Avg. 4K-64Thread Read Speed
120 MB/s 311 MB/s Hugely faster deep queue read.
+159%
ADQ Write
Avg. 4K-64Thread Write Speed
123 MB/s 282 MB/s Hugely faster deep queue write.
+129%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
109 MB/s 201 MB/s Hugely faster deep queue mixed IO.
+84%
Capacity
Capacity
60GB 256GB
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The 256GB Crucial M550 is a welcome improvement over the 240GB M500. The new Marvel 88SS9189 controller has addressed our primary concern with the M500 which was poor sequential write speed. With sequential read/write speeds of 510/478 MB/s the M550 has a healthy core performance profile. Comparing the M550 and M500 shows that the new M550 leads on nearly every single performance metric. Unfortunately the M550 is priced significantly higher than the M500 but prices will likely drop as retailers build up stocks of the new M550. A key comparable for the M550 is the similarly priced market leading Samsung Evo. Comparing the Evo and M550 shows that the Evo is around 11% slower in terms of effective speed[Mar '14 SSDrivePro]

MORE DETAILS

Solid State Drive Rankings (Price vs Performance) June 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
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Intel Core i5-13600K $245Nvidia RTX 4070 $549Crucial T700 M.2 4TB $359
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