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SamsungMZ-76P512B
PlextorPX-256M5M
▲ 5259 ▼

Controller: Samsung MJX. Memory: Samsung 64 layer MLC V-NAND. Release date ≈ Q1 2018.

VS
▲ 52552 ▼

Controller: Marvell 88SS9187-BLD2. Flash Memory: Toshiba 19nm Toggle Mode MLC. Release date: Q2 2013.

Effective Speed 
+39%
Real World Speed
Performance profile from 17,350 user samples
Benchmark your SSD here
16,934 User Benchmarks
Best Bench: 133% 388GB free
Worst Bench: 79% 386GB free (System drive)
Poor: 79% Great: 133%
SPEED RANK: 226th / 1080
416 User Benchmarks
Best Bench: 96% 474GB free
Worst Bench: 59% 116GB free (System drive)
Poor: 59% Great: 96%
SPEED RANK: 505th / 1080
Effective Speed
Effective SSD Speed 		110 % Much faster effective speed.
+39% 		79.1 %
Average Score 
+42%
Read
Avg. Sequential Read Speed 		476 MB/s +5% 455 MB/s
Write
Avg. Sequential Write Speed 		416 MB/s Faster write speed.
+15% 		363 MB/s
4K Read
Avg. 4K Random Read Speed 		37.2 MB/s Much faster random read.
+56% 		23.8 MB/s
4K Write
Avg. 4K Random Write Speed 		91.3 MB/s Hugely faster random write.
+87% 		48.7 MB/s
Mixed
Avg. Sequential Mixed IO Speed 		403 MB/s Faster mixed IO speed.
+20% 		336 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed 		49.8 MB/s Hugely faster random mixed IO.
+97% 		25.3 MB/s
SusWrite
Avg. Sustained Write Speed 		395 MB/s Faster sustained write speed.
+17% 		338 MB/s
Peak Score 
+34%
Read
Peak Sequential Read Speed 		517 MB/s +4% 499 MB/s
Write
Peak Sequential Write Speed 		490 MB/s Faster peak write speed.
+20% 		410 MB/s
4K Read
Peak 4K Random Read Speed 		45.6 MB/s Much faster peak random read.
+45% 		31.4 MB/s
4K Write
Peak 4K Random Write Speed 		127 MB/s Much faster peak random write.
+71% 		74.3 MB/s
Mixed
Peak Sequential Mixed IO Speed 		455 MB/s +2% 445 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed 		62.9 MB/s Much faster peak random mixed IO.
+67% 		37.7 MB/s
SusWrite
Peak Sequential Sustained Write 60s Average 		488 MB/s Faster peak sustained write speed.
+30% 		376 MB/s
Value & Sentiment 
+∞%
Market Share
Based on 76,276,110 SSDs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.01 % Insanely higher market share.
+∞% 		0 %
Value
Value For Money 		17.9 % Hugely better value.
+231% 		5.4 %
User Rating
UBM User Rating 		52 % 52 %
Price
Price (score) 		$150 Much cheaper.
+37% 		$240
Nice To Haves 
+52%
Age
Newest 		76+ Months Much more recent.
+43% 		134 Months
DQ Read
Peak 4K-64Thread Read Speed 		389 MB/s Faster peak deep queue read.
+27% 		306 MB/s
DQ Write
Peak 4K-64Thread Write Speed 		362 MB/s Faster peak deep queue write.
+20% 		301 MB/s
AS-SSD Total
AS-SSD Total Score 		1,289 Pts Stronger server IO.
+28% 		1,008 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed 		367 MB/s Much faster peak deep queue mixed IO.
+67% 		220 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed 		345 MB/s Much faster deep queue read.
+58% 		219 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed 		290 MB/s Much faster deep queue write.
+31% 		222 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed 		302 MB/s Hugely faster deep queue mixed IO.
+140% 		126 MB/s
Specifications 
Capacity
Capacity 		512GB 256GB
Conclusion 
Average Bench 110%
Average Bench 79.1%
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Good :) [Apr '19 RifluY29]

MORE DETAILS

The Plextor M5M is the most recent mSATA SSD I have looked at. It has both the same controller and NAND flash (albeit with fewer channels) as its regular SATA sibling, the excellent M5 Pro. The performance figures for the M5M lag the top nine SATA group leaders by around 30% on average. The weakest area of core performance is shallow queue 4K write speed which clocks in at 57 MBps on the M5M vs a group average of 118 MBps. In terms of server orientated performance, the M5M takes 13th place out of 29 with an AS SSD total score of 946. That said it's only fair to look at the M5M within the context of other mSATA SSDs. It's not a clear cut performance win between the M5M and the Intel 525 Series but the M5M is retailing for 23% less. Unless shallow queue random writes are a top priority for your use case the M5M is the clear value winner, and my top mSATA pick for 2013. [Oct '13 SSDrivePro]

MORE DETAILS

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 Frequently Asked Questions

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