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SamsungMZ-7PD128BW
SamsungMZ-7TE120BW
▲ 542,764 ▼

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

VS
▲ 5413,088 ▼

Controller: Samsung 3 Core MEX. Memory: Samsung 19nm Toggle Mode TLC. Release date: Q3 2013.

Effective Speed 
+2%
Real World Speed
Performance profile from 139,286 user samples
Benchmark your SSD here
34,842 User Benchmarks
Best Bench: 110% 62GB free
Worst Bench: 62% 119GB free
Poor: 62% Great: 110%
SPEED RANK: 344th / 1080
104,444 User Benchmarks
Best Bench: 108% 112GB free
Worst Bench: 63% 42GB free
Poor: 63% Great: 108%
SPEED RANK: 320th / 1080
Effective Speed
Effective SSD Speed 		89.5 % 91.4 % +2%
Average Score 
+1%
Read
Avg. Sequential Read Speed 		444 MB/s 461 MB/s +4%
Write
Avg. Sequential Write Speed 		336 MB/s 404 MB/s Faster write speed.
+20%
4K Read
Avg. 4K Random Read Speed 		30.5 MB/s 38.9 MB/s Faster random read.
+28%
4K Write
Avg. 4K Random Write Speed 		81.6 MB/s 87 MB/s Slightly faster random write.
+7%
Mixed
Avg. Sequential Mixed IO Speed 		268 MB/s 317 MB/s Faster mixed IO speed.
+18%
4K Mixed
Avg. 4K Random Mixed IO Speed 		35.9 MB/s 45.8 MB/s Faster random mixed IO.
+28%
SusWrite
Avg. Sustained Write Speed 		286 MB/s Hugely faster sustained write speed.
+110% 		136 MB/s
Peak Score 
+8%
Read
Peak Sequential Read Speed 		497 MB/s 506 MB/s +2%
Write
Peak Sequential Write Speed 		445 MB/s 489 MB/s Slightly faster peak write speed.
+10%
4K Read
Peak 4K Random Read Speed 		36.3 MB/s 46.3 MB/s Faster peak random read.
+28%
4K Write
Peak 4K Random Write Speed 		113 MB/s 118 MB/s +4%
Mixed
Peak Sequential Mixed IO Speed 		331 MB/s 392 MB/s Faster peak mixed IO speed.
+18%
4K Mixed
Peak 4K Random Mixed IO Speed 		44.1 MB/s 55.6 MB/s Faster peak random mixed IO.
+26%
SusWrite
Peak Sequential Sustained Write 60s Average 		440 MB/s Hugely faster peak sustained write speed.
+146% 		179 MB/s
Value & Sentiment 
+42%
Market Share
Based on 77,605,476 SSDs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.04 % 0.07 % Much higher market share.
+75%
Value
Value For Money 		5.17 % 7.7 % Much better value.
+49%
User Rating
UBM User Rating 		54 % 54 %
Price
Price (score) 		$150 $85 Much cheaper.
+43%
Nice To Haves 
+11%
Age
Newest 		145 Months 136 Months Slightly more recent.
+6%
DQ Read
Peak 4K-64Thread Read Speed 		376 MB/s 381 MB/s +1%
DQ Write
Peak 4K-64Thread Write Speed 		330 MB/s 362 MB/s Slightly faster peak deep queue write.
+10%
AS-SSD Total
AS-SSD Total Score 		1,196 Pts 1,268 Pts Slightly stronger server IO.
+6%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed 		155 MB/s 179 MB/s Faster peak deep queue mixed IO.
+15%
ADQ Read
Avg. 4K-64Thread Read Speed 		332 MB/s 339 MB/s +2%
ADQ Write
Avg. 4K-64Thread Write Speed 		245 MB/s 297 MB/s Faster deep queue write.
+21%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed 		126 MB/s 160 MB/s Faster deep queue mixed IO.
+27%
Specifications 
Capacity
Capacity 		128GB 120GB
Conclusion 
Average Bench 89.5%
Average Bench 91.4%

The 128GB 840 Pro is a rock solid performer. On release, nearly a year and a half ago, the Pro smashed several speed records. Today, with sequential read/write speeds of 519/438 MBps, the Pro is still one of the fastest SSDs available. One of the Pro's top competitors is Samsungs own, newer 840 Evo. Looking at a raw synthetic speed comparison of the 128GB Pro and Evo is a little misleading. On the face of it the Pro only has a marginal lead over the Evo. This due to the fact that the Evo can only maintain its burst write speed for transfers of up to 3GB, the size of its SLC cache. The Pro on the other hand can sustain higher throughputs indefinitely. The Pro also utilizes MLC which is rated for far more erase cycles than the TLC used in the Evo. Server IO is often continuous and would quickly exhaust the 3GB cache on the Evo but for typical consumer use the Evo will remain within the SLC cache most of the time. [Feb '14 SSDrivePro]

MORE DETAILS

The 120GB Evo, like its 250GB sibling, features a second level Turbowrite cache (TWC). This 3GB block of high speed SLC memory allows the Evo to write data at 370 MB/s, nearly double its normal rate. When the TWC is full write speeds drop by around 50% but since consumers generally write less than 3GB in a typical write operation, the performance drop will rarely be noticed. On the other hand, in a server environment this sort of performance degradation would be unacceptable. Comparing the 120GB and 250GB Evos shows that they have similar performance profiles. The performance equivalence between the different capacities, coupled with the fact that their prices are almost linear, implies that both capacities represent roughly the same value for money. Within its TWC, the 120GB Evo is capable of chart topping burst IO rates and it sits squarely amongst the best performing 120GB drives. [Aug '14 SSDrivePro]

MORE DETAILS

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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]

Group Test Results

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 Frequently Asked Questions

Storage Devices FAQ
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Solid State Drives
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