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CorsairCSSD-F120GB3-BK
$109
SamsungMZ-7PD256BW
▲ 51741 ▼
 $109 

Controller: LSI SandForce SF2281VB1-SDC. Memory: Micron Asynchronous 25nm MLC. Release date: Q2 2011.

VS
▲ 5420,557 ▼

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

Effective Speed 
+99%
Real World Speed
Performance profile from 95,477 user samples
Benchmark your SSD here
22,358 User Benchmarks
Best Bench: 61% 195GB free
Worst Bench: 32% 6GB free
Poor: 32% Great: 61%
SPEED RANK: 906th / 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 		47.8 % 95 % Hugely faster effective speed.
+99%
Average Score 
+134%
Read
Avg. Sequential Read Speed 		149 MB/s 459 MB/s Hugely faster read speed.
+208%
Write
Avg. Sequential Write Speed 		113 MB/s 367 MB/s Hugely faster write speed.
+225%
4K Read
Avg. 4K Random Read Speed 		22 MB/s 31 MB/s Much faster random read.
+41%
4K Write
Avg. 4K Random Write Speed 		67.8 MB/s 85.6 MB/s Faster random write.
+26%
Mixed
Avg. Sequential Mixed IO Speed 		129 MB/s 303 MB/s Hugely faster mixed IO speed.
+135%
4K Mixed
Avg. 4K Random Mixed IO Speed 		26 MB/s 39.5 MB/s Much faster random mixed IO.
+52%
SusWrite
Avg. Sustained Write Speed 		89.1 MB/s 312 MB/s Hugely faster sustained write speed.
+250%
Peak Score 
+142%
Read
Peak Sequential Read Speed 		184 MB/s 510 MB/s Hugely faster peak read speed.
+177%
Write
Peak Sequential Write Speed 		136 MB/s 480 MB/s Hugely faster peak write speed.
+253%
4K Read
Peak 4K Random Read Speed 		28.7 MB/s 36.1 MB/s Faster peak random read.
+26%
4K Write
Peak 4K Random Write Speed 		104 MB/s 114 MB/s Slightly faster peak random write.
+10%
Mixed
Peak Sequential Mixed IO Speed 		149 MB/s 368 MB/s Hugely faster peak mixed IO speed.
+147%
4K Mixed
Peak 4K Random Mixed IO Speed 		34.1 MB/s 47.6 MB/s Much faster peak random mixed IO.
+40%
SusWrite
Peak Sequential Sustained Write 60s Average 		108 MB/s 477 MB/s Hugely faster peak sustained write speed.
+342%
Value & Sentiment 
+178%
Market Share
Based on 77,537,876 SSDs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.01 % 0.07 % Hugely higher market share.
+600%
Value
Value For Money 		3.34 % 8.21 % Hugely better value.
+146%
User Rating
UBM User Rating 		51 % 54 % Slightly more popular.
+6%
Price
Price (score) 		$109 Much cheaper.
+38% 		$175
Nice To Haves 
+114%
Age
Newest 		162 Months 145 Months More recent.
+10%
DQ Read
Peak 4K-64Thread Read Speed 		144 MB/s 385 MB/s Hugely faster peak deep queue read.
+167%
DQ Write
Peak 4K-64Thread Write Speed 		126 MB/s 334 MB/s Hugely faster peak deep queue write.
+165%
AS-SSD Total
AS-SSD Total Score 		542 Pts 1,221 Pts Hugely stronger server IO.
+125%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed 		118 MB/s 176 MB/s Much faster peak deep queue mixed IO.
+49%
ADQ Read
Avg. 4K-64Thread Read Speed 		120 MB/s 346 MB/s Hugely faster deep queue read.
+188%
ADQ Write
Avg. 4K-64Thread Write Speed 		108 MB/s 262 MB/s Hugely faster deep queue write.
+143%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed 		88.6 MB/s 147 MB/s Much faster deep queue mixed IO.
+66%
Specifications 
Capacity
Capacity 		120GB 256GB
Conclusion 
Average Bench 47.8%
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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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?
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What is sequential write speed?
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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?
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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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We don't pay youtubers, so they don't praise us. Moreover, our data obstructs youtubers who promote overpriced or inferior products.
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