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PlextorPX-256M5M
TranscendTS256GSSD370
▲ 52552 ▼

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

VS
▲ 532,154 ▼

Controller: Silicon Motion SM2246EN. NAND: Micron 20nm Synchronous MLC. Release date: Q3 2014.

Effective Speed 
+1%
Real World Speed
Performance profile from 5,665 user samples
Benchmark your SSD here
416 User Benchmarks
Best Bench: 96% 474GB free
Worst Bench: 59% 116GB free (System drive)
Poor: 59% Great: 96%
SPEED RANK: 497th / 1072
5,249 User Benchmarks
Best Bench: 96% 139GB free
Worst Bench: 54% 14GB free (System drive)
Poor: 54% Great: 96%
SPEED RANK: 487th / 1072
Effective Speed
Effective SSD Speed 		79.1 % 80 % +1%
Average Score 
+3%
Read
Avg. Sequential Read Speed 		455 MB/s 465 MB/s +2%
Write
Avg. Sequential Write Speed 		363 MB/s Faster write speed.
+28% 		283 MB/s
4K Read
Avg. 4K Random Read Speed 		23.8 MB/s 24.5 MB/s +3%
4K Write
Avg. 4K Random Write Speed 		48.7 MB/s 73.3 MB/s Much faster random write.
+51%
Mixed
Avg. Sequential Mixed IO Speed 		336 MB/s Much faster mixed IO speed.
+34% 		251 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed 		25.3 MB/s 33.2 MB/s Much faster random mixed IO.
+31%
SusWrite
Avg. Sustained Write Speed 		338 MB/s Much faster sustained write speed.
+46% 		231 MB/s
Peak Score 
+9%
Read
Peak Sequential Read Speed 		499 MB/s 513 MB/s +3%
Write
Peak Sequential Write Speed 		410 MB/s Much faster peak write speed.
+36% 		301 MB/s
4K Read
Peak 4K Random Read Speed 		31.4 MB/s Slightly faster peak random read.
+8% 		29 MB/s
4K Write
Peak 4K Random Write Speed 		74.3 MB/s 108 MB/s Much faster peak random write.
+45%
Mixed
Peak Sequential Mixed IO Speed 		445 MB/s Much faster peak mixed IO speed.
+50% 		296 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed 		37.7 MB/s 41.3 MB/s Slightly faster peak random mixed IO.
+10%
SusWrite
Peak Sequential Sustained Write 60s Average 		376 MB/s Faster peak sustained write speed.
+27% 		295 MB/s
Value & Sentiment 
�%
Market Share
Based on 75,661,174 SSDs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0 % 0 %
Value
Value For Money 		5.4 % 9.8 % Hugely better value.
+81%
User Rating
UBM User Rating 		52 % 53 % +2%
Price
Price (score) 		$240 $110 Much cheaper.
+54%
Nice To Haves 
+5%
Age
Newest 		132 Months 116 Months More recent.
+12%
DQ Read
Peak 4K-64Thread Read Speed 		306 MB/s Slightly faster peak deep queue read.
+5% 		291 MB/s
DQ Write
Peak 4K-64Thread Write Speed 		301 MB/s +5% 288 MB/s
AS-SSD Total
AS-SSD Total Score 		1,008 Pts +2% 987 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed 		220 MB/s Faster peak deep queue mixed IO.
+14% 		193 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed 		219 MB/s 255 MB/s Faster deep queue read.
+16%
ADQ Write
Avg. 4K-64Thread Write Speed 		222 MB/s 246 MB/s Faster deep queue write.
+11%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed 		126 MB/s 161 MB/s Faster deep queue mixed IO.
+28%
Specifications 
Capacity
Capacity 		256GB 256GB
Conclusion 
Average Bench 79.1%
Average Bench 80%
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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

The 256GB Transcend SSD370 sports a Silicon Motion (SM2246EN) controller coupled with Micron 20nm synchronous MLC NAND. With peak sequential read/write speeds of 520/290 MBps and peak 4k read/write speeds of 29/116 the SSD370 has an effective speed which is amongst the bottom 25% of ~250GB drives. The effective speed is weighed down by a relatively weak sequential write speed of just 290 MBps. The performance highlight for the SSD370 is its ability to deal with mixed 4k IO which is arguably one of the best real world indicators. At current prices the SSD370 can't compete as there are both cheaper and faster alternatives on the market but prices are almost certain to drop at which time the SSD370 will fare far better in terms of value. [Oct '14 SSDrivePro]

MORE DETAILS

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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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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.
How Fast Is Your SSD? (Bench your build) Size up your PC in less than a minute

Welcome to our PC speed test tool. UserBenchmark will test your PC and compare the results to other users with the same components. You can quickly size up your PC, identify hardware problems and explore the best value for money upgrades.

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How it works

  • - Download and run UserBenchmark
  • - CPU tests include: integer, floating and string
  • - GPU tests include: six 3D game simulations
  • - Drive tests include: read, write, sustained write and mixed IO
  • - RAM tests include: single/multi core bandwidth and latency
  • - SkillBench (space shooter) tests user input accuracy
  • - Reports are generated and presented on userbenchmark.com
  • - Identify the strongest components in your PC
  • - See speed test results from other users
  • - Compare your components to the current market leaders
  • - Explore your best upgrade options with a virtual PC build
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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?
What’s the difference between NAND and V-NAND?
What is sequential write speed?
What is sequential read speed?
What is incompressible data?
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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?
What is the effective SSD speed index?
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Intel Core i5-13600K $279Nvidia RTX 4060 $300Crucial MX500 250GB $40
Intel Core i5-12400F $134Nvidia RTX 4060-Ti $385Samsung 850 Evo 120GB $80
Intel Core i5-12600K $184Nvidia RTX 4070 $409Samsung 860 Evo 250GB $52
HDDRAMUSB
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WD Blue 1TB (2012) $35Corsair Vengeance LPX DDR4 3000 C15 2x8GB $43SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $51G.SKILL Trident Z DDR4 3200 C14 4x16GB $351SanDisk Ultra Fit 32GB $16
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