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PNYSSD7CS1311-120-RB
SamsungMZ-7PD256BW
▲ 52300 ▼

Controller: Phison PS3110. NAND Memory: Toshiba 15nm TLC. Release date: Q2 2016.

VS
▲ 5420,557 ▼

Controller: Samsung 3-core MDX. Flash Memory: Samsung 21nm Toggle Mode MLC. Release date: Q4 2012.

Effective Speed 
+26%
Real World Speed
Performance profile from 85,512 user samples
Benchmark your SSD here
12,393 User Benchmarks
Best Bench: 91% 0GB free (System drive)
Worst Bench: 48% 32GB free (System drive)
Poor: 48% Great: 91%
SPEED RANK: 582nd / 1080
73,119 User Benchmarks
Best Bench: 116% 238GB free
Worst Bench: 68% 11GB free (System drive)
Poor: 68% Great: 116%
SPEED RANK: 287th / 1080
Effective Speed
Effective SSD Speed 		75.1 % 95 % Faster effective speed.
+26%
Average Score 
+34%
Read
Avg. Sequential Read Speed 		442 MB/s 459 MB/s +4%
Write
Avg. Sequential Write Speed 		383 MB/s +4% 367 MB/s
4K Read
Avg. 4K Random Read Speed 		27.8 MB/s 31 MB/s Faster random read.
+12%
4K Write
Avg. 4K Random Write Speed 		75.2 MB/s 85.6 MB/s Faster random write.
+14%
Mixed
Avg. Sequential Mixed IO Speed 		321 MB/s Slightly faster mixed IO speed.
+6% 		303 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed 		34.1 MB/s 39.5 MB/s Faster random mixed IO.
+16%
SusWrite
Avg. Sustained Write Speed 		103 MB/s 312 MB/s Hugely faster sustained write speed.
+203%
Peak Score 
+45%
Read
Peak Sequential Read Speed 		517 MB/s +1% 510 MB/s
Write
Peak Sequential Write Speed 		471 MB/s 480 MB/s +2%
4K Read
Peak 4K Random Read Speed 		33.9 MB/s 36.1 MB/s Slightly faster peak random read.
+6%
4K Write
Peak 4K Random Write Speed 		110 MB/s 114 MB/s +4%
Mixed
Peak Sequential Mixed IO Speed 		378 MB/s +3% 368 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed 		42.2 MB/s 47.6 MB/s Faster peak random mixed IO.
+13%
SusWrite
Peak Sequential Sustained Write 60s Average 		122 MB/s 477 MB/s Hugely faster peak sustained write speed.
+291%
Value & Sentiment 
+86%
Market Share
Based on 77,592,894 SSDs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.01 % 0.05 % Hugely higher market share.
+400%
Value
Value For Money 		7.92 % 8.21 % +4%
User Rating
UBM User Rating 		52 % 54 % +4%
Price
Price (score) 		$63 Much cheaper.
+64% 		$175
Nice To Haves 
+2%
Age
Newest 		103 Months More recent.
+29% 		145 Months
DQ Read
Peak 4K-64Thread Read Speed 		324 MB/s 385 MB/s Faster peak deep queue read.
+19%
DQ Write
Peak 4K-64Thread Write Speed 		373 MB/s Faster peak deep queue write.
+12% 		334 MB/s
AS-SSD Total
AS-SSD Total Score 		1,159 Pts 1,221 Pts Slightly stronger server IO.
+5%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed 		184 MB/s +5% 176 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed 		298 MB/s 346 MB/s Faster deep queue read.
+16%
ADQ Write
Avg. 4K-64Thread Write Speed 		269 MB/s +3% 262 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed 		155 MB/s Slightly faster deep queue mixed IO.
+5% 		147 MB/s
Specifications 
Capacity
Capacity 		120GB 256GB
Conclusion 
Average Bench 75.1%
Average Bench 95%

The 840 Pro is stunning. Samsung have created a completely in-house package including both the controller and their own new 21nm toggle mode NAND. On release (Oct '12) this was the fastest performing deep queue depth consumer grade SSD available. Fast forward six months (Apr '13) and the 840 Pro still holds both the random read/write deep queue depth speed records of 384 MB/s and 326 MB/s, impressive considering how fast the SSD space tends to move. There are no obvious weaknesses, in-fact the 840 pro takes first place in nearly all of the speed categories and is only seriously rivalled by one drive, the OCZ Vector. To conclude, in terms of both outright performance, particularly server orientated, and value for money the 256GB and 128GB 840 Pros are amongst the top handful of drives currently available. [Jun '13 SSDrivePro]

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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
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Solid State Drives
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What is 4K 64 thread write speed?
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