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SamsungMZ-7PD128BW
SamsungMZ-7TE500BW
▲ 542,764 ▼

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

VS
▲ 518 ▼

Controller: Samsung 3 Core MEX. Memory: Samsung 19nm Toggle Mode TLC. Release date ≤ Q4 2013.

Effective Speed 
+15%
Real World Speed
Performance profile from 103,179 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
68,337 User Benchmarks
Best Bench: 126% 450GB free
Worst Bench: 72% 150GB free (System drive)
Poor: 72% Great: 126%
SPEED RANK: 252nd / 1080
Effective Speed
Effective SSD Speed 		89.5 % 103 % Faster effective speed.
+15%
Average Score 
+18%
Read
Avg. Sequential Read Speed 		444 MB/s 468 MB/s Slightly faster read speed.
+5%
Write
Avg. Sequential Write Speed 		336 MB/s 381 MB/s Faster write speed.
+13%
4K Read
Avg. 4K Random Read Speed 		30.5 MB/s 39.2 MB/s Faster random read.
+29%
4K Write
Avg. 4K Random Write Speed 		81.6 MB/s 85.6 MB/s +5%
Mixed
Avg. Sequential Mixed IO Speed 		268 MB/s 344 MB/s Faster mixed IO speed.
+28%
4K Mixed
Avg. 4K Random Mixed IO Speed 		35.9 MB/s 49.6 MB/s Much faster random mixed IO.
+38%
SusWrite
Avg. Sustained Write Speed 		286 MB/s 298 MB/s +4%
Peak Score 
+15%
Read
Peak Sequential Read Speed 		497 MB/s 508 MB/s +2%
Write
Peak Sequential Write Speed 		445 MB/s 486 MB/s Slightly faster peak write speed.
+9%
4K Read
Peak 4K Random Read Speed 		36.3 MB/s 46.2 MB/s Faster peak random read.
+27%
4K Write
Peak 4K Random Write Speed 		113 MB/s 116 MB/s +3%
Mixed
Peak Sequential Mixed IO Speed 		331 MB/s 420 MB/s Faster peak mixed IO speed.
+27%
4K Mixed
Peak 4K Random Mixed IO Speed 		44.1 MB/s 60.5 MB/s Much faster peak random mixed IO.
+37%
SusWrite
Peak Sequential Sustained Write 60s Average 		440 MB/s 445 MB/s +1%
Value & Sentiment 
+54%
Market Share
Based on 77,608,390 SSDs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.04 % 0.04 %
Value
Value For Money 		5.17 % 16.5 % Hugely better value.
+220%
User Rating
UBM User Rating 		54 % Slightly more popular.
+6% 		51 %
Price
Price (score) 		$150 $150
Nice To Haves 
+23%
Age
Newest 		145 Months 131+ Months Slightly more recent.
+10%
DQ Read
Peak 4K-64Thread Read Speed 		376 MB/s 385 MB/s +2%
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 1,272 Pts Slightly stronger server IO.
+6%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed 		155 MB/s 255 MB/s Much faster peak deep queue mixed IO.
+65%
ADQ Read
Avg. 4K-64Thread Read Speed 		332 MB/s 338 MB/s +2%
ADQ Write
Avg. 4K-64Thread Write Speed 		245 MB/s 287 MB/s Faster deep queue write.
+17%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed 		126 MB/s 218 MB/s Much faster deep queue mixed IO.
+73%
Specifications 
Capacity
Capacity 		128GB 500GB
Conclusion 
Average Bench 89.5%
Average Bench 103%

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]

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68,337
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Solid State Drive Rankings (Price vs Performance) November 2024 SSD Rankings

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?
What’s the difference between NAND and V-NAND?
What is sequential write speed?
What is sequential read speed?
What is incompressible data?
What is queue depth?
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?
How is the AS SSD write score calculated?
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Brands make boatloads on flagships like the 4090 and 14900KS. We help users get similar real-world performance for less money.
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The Best
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