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SamsungMZ-77E250B
KingstonSA400S37/240G
▲ 57223 ▼

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

VS
▲ 54667 ▼

Controller: Phison PS3111-S11. Flash Memory: Toshiba 15nm TLC. Release date: Q1 2017.

Effective Speed 
+54%
Real World Speed
Performance profile from 438,370 user samples
Benchmark your SSD here
14,082 User Benchmarks
Best Bench: 128% 0GB free
Worst Bench: 67% 59GB free (System drive)
Poor: 67% Great: 128%
SPEED RANK: 259th / 1080
424,288 User Benchmarks
Best Bench: 100% 181GB free (System drive)
Worst Bench: 33% 119GB free (System drive)
Poor: 33% Great: 100%
SPEED RANK: 742nd / 1080
Effective Speed
Effective SSD Speed 		101 % Much faster effective speed.
+54% 		65.8 %
Average Score 
+49%
Read
Avg. Sequential Read Speed 		461 MB/s Faster read speed.
+11% 		414 MB/s
Write
Avg. Sequential Write Speed 		395 MB/s Faster write speed.
+24% 		318 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 Much faster random write.
+44% 		56.9 MB/s
Mixed
Avg. Sequential Mixed IO Speed 		365 MB/s Much faster mixed IO speed.
+40% 		260 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed 		45.9 MB/s Hugely faster random mixed IO.
+105% 		22.4 MB/s
SusWrite
Avg. Sustained Write Speed 		322 MB/s Much faster sustained write speed.
+80% 		179 MB/s
Peak Score 
+17%
Read
Peak Sequential Read Speed 		514 MB/s +2% 504 MB/s
Write
Peak Sequential Write Speed 		486 MB/s Slightly faster peak write speed.
+9% 		446 MB/s
4K Read
Peak 4K Random Read Speed 		49.1 MB/s Much faster peak random read.
+36% 		36.1 MB/s
4K Write
Peak 4K Random Write Speed 		123 MB/s Faster peak random write.
+16% 		106 MB/s
Mixed
Peak Sequential Mixed IO Speed 		457 MB/s Slightly faster peak mixed IO speed.
+9% 		420 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed 		66.1 MB/s Much faster peak random mixed IO.
+57% 		42 MB/s
SusWrite
Peak Sequential Sustained Write 60s Average 		396 MB/s 432 MB/s Slightly faster peak sustained write speed.
+9%
Value & Sentiment 
+329%
Market Share
Based on 77,602,743 SSDs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.07 % 0.96 % Insanely higher market share.
+1,271%
Value
Value For Money 		22.7 % 23.3 % +3%
User Rating
UBM User Rating 		57 % Slightly more popular.
+6% 		54 %
Price
Price (score) 		$48 $25 Much cheaper.
+48%
Nice To Haves 
+65%
Age
Newest 		46 Months Much more recent.
+51% 		94 Months
DQ Read
Peak 4K-64Thread Read Speed 		389 MB/s Much faster peak deep queue read.
+35% 		288 MB/s
DQ Write
Peak 4K-64Thread Write Speed 		362 MB/s +4% 349 MB/s
AS-SSD Total
AS-SSD Total Score 		1,291 Pts Stronger server IO.
+20% 		1,076 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed 		372 MB/s Hugely faster peak deep queue mixed IO.
+82% 		204 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed 		349 MB/s Hugely faster deep queue read.
+83% 		191 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed 		299 MB/s Much faster deep queue write.
+40% 		214 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed 		280 MB/s Hugely faster deep queue mixed IO.
+202% 		92.7 MB/s
Specifications 
Capacity
Capacity 		250GB 240GB
Conclusion 
Average Bench 101%
Average Bench 65.8%

could have used some DRAM, stutters when booting. [Dec '19 ExecutableFiles]

MORE DETAILS

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424,288
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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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 Frequently Asked Questions

Storage Devices FAQ
What is sustained sequential write speed?
What’s the difference between SLC, MLC and TLC?
What is 3D XPoint and how fast is it?
What’s the difference between SATA, PCIe and NVMe?
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What is sequential write speed?
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Solid State Drives
What is the SSD value for money rating?
What is 4K 64 thread write speed?
Can CPU power saving states (C1,C2,C3) impact SSD speed?
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The Best
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Intel Core i5-13600K $210Nvidia RTX 4060 $285WD Black SN850X M.2 2TB $130
Intel Core i5-12600K $160Nvidia RTX 4060-Ti $389WD Black SN850X M.2 1TB $80
Intel Core i5-12400F $111Nvidia RTX 4070 $500Crucial T700 M.2 4TB $330
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