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SamsungMZ-7PD128BW
PatriotPP120GS25SSDR
▲ 542,764 ▼

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

VS
▲ 51346 ▼

Controller: SandForce SF2281. NAND Memory: IMFT Asynchronous 25nm MLC. Release date: Q3 2011.

Effective Speed 
+42%
Real World Speed
Performance profile from 35,000 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
158 User Benchmarks
Great Bench: 76% 112GB free
Poor Bench: 48% 13GB free (System drive)
Poor: 48% Great: 76%
SPEED RANK: 778th / 1080
Effective Speed
Effective SSD Speed 		89.5 % Much faster effective speed.
+42% 		63 %
Average Score 
+64%
Read
Avg. Sequential Read Speed 		444 MB/s Faster read speed.
+28% 		348 MB/s
Write
Avg. Sequential Write Speed 		336 MB/s Hugely faster write speed.
+151% 		134 MB/s
4K Read
Avg. 4K Random Read Speed 		30.5 MB/s Faster random read.
+24% 		24.6 MB/s
4K Write
Avg. 4K Random Write Speed 		81.6 MB/s +3% 79 MB/s
Mixed
Avg. Sequential Mixed IO Speed 		268 MB/s Much faster mixed IO speed.
+50% 		179 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed 		35.9 MB/s Slightly faster random mixed IO.
+8% 		33.2 MB/s
SusWrite
Avg. Sustained Write Speed 		286 MB/s Hugely faster sustained write speed.
+183% 		101 MB/s
Peak Score 
+32%
Read
Peak Sequential Read Speed 		497 MB/s Faster peak read speed.
+12% 		445 MB/s
Write
Peak Sequential Write Speed 		445 MB/s Much faster peak write speed.
+61% 		276 MB/s
4K Read
Peak 4K Random Read Speed 		36.3 MB/s Slightly faster peak random read.
+9% 		33.4 MB/s
4K Write
Peak 4K Random Write Speed 		113 MB/s +1% 112 MB/s
Mixed
Peak Sequential Mixed IO Speed 		331 MB/s Faster peak mixed IO speed.
+17% 		283 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed 		44.1 MB/s Faster peak random mixed IO.
+12% 		39.3 MB/s
SusWrite
Peak Sequential Sustained Write 60s Average 		440 MB/s Hugely faster peak sustained write speed.
+116% 		204 MB/s
Value & Sentiment 
+∞%
Market Share
Based on 77,432,371 SSDs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.02 % Insanely higher market share.
+∞% 		0 %
Value
Value For Money 		5.17 % 5.93 % Better value.
+15%
User Rating
UBM User Rating 		54 % Slightly more popular.
+6% 		51 %
Price
Price (score) 		$150 $73 Much cheaper.
+51%
Nice To Haves 
+58%
Age
Newest 		145 Months Slightly more recent.
+9% 		159 Months
DQ Read
Peak 4K-64Thread Read Speed 		376 MB/s Much faster peak deep queue read.
+71% 		220 MB/s
DQ Write
Peak 4K-64Thread Write Speed 		330 MB/s Faster peak deep queue write.
+27% 		259 MB/s
AS-SSD Total
AS-SSD Total Score 		1,196 Pts Much stronger server IO.
+40% 		854 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed 		155 MB/s 170 MB/s Slightly faster peak deep queue mixed IO.
+10%
ADQ Read
Avg. 4K-64Thread Read Speed 		332 MB/s Hugely faster deep queue read.
+213% 		106 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed 		245 MB/s Hugely faster deep queue write.
+86% 		132 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed 		126 MB/s Faster deep queue mixed IO.
+26% 		100 MB/s
Specifications 
Capacity
Capacity 		128GB 120GB
Conclusion 
Average Bench 89.5%
Average Bench 63%

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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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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What’s the difference between SATA, PCIe and NVMe?
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Solid State Drives
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What is 4K 64 thread write speed?
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The Best
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