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SamsungMZ-7PD128BW
CorsairCSSD-F480GBMP500
▲ 542,763 ▼

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

VS
▲ 5121 ▼

Release date ≈ Q1 2017.

Effective Speed 
+76%
Real World Speed
Performance profile from 38,723 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 / 1079
3,881 User Benchmarks
Best Bench: 211% 318GB free (System drive)
Worst Bench: 105% 83GB free (System drive)
Poor: 105% Great: 211%
SPEED RANK: 154th / 1079
Effective Speed
Effective SSD Speed 		89.5 % 158 % Much faster effective speed.
+76%
Average Score 
+77%
Read
Avg. Sequential Read Speed 		444 MB/s 943 MB/s Hugely faster read speed.
+112%
Write
Avg. Sequential Write Speed 		336 MB/s 773 MB/s Hugely faster write speed.
+130%
4K Read
Avg. 4K Random Read Speed 		30.5 MB/s 35.1 MB/s Faster random read.
+15%
4K Write
Avg. 4K Random Write Speed 		81.6 MB/s 100 MB/s Faster random write.
+23%
Mixed
Avg. Sequential Mixed IO Speed 		268 MB/s 546 MB/s Hugely faster mixed IO speed.
+104%
4K Mixed
Avg. 4K Random Mixed IO Speed 		35.9 MB/s 44.4 MB/s Faster random mixed IO.
+24%
SusWrite
Avg. Sustained Write Speed 		286 MB/s 654 MB/s Hugely faster sustained write speed.
+129%
Peak Score 
+102%
Read
Peak Sequential Read Speed 		497 MB/s 1184 MB/s Hugely faster peak read speed.
+138%
Write
Peak Sequential Write Speed 		445 MB/s 1258 MB/s Hugely faster peak write speed.
+183%
4K Read
Peak 4K Random Read Speed 		36.3 MB/s 43.7 MB/s Faster peak random read.
+20%
4K Write
Peak 4K Random Write Speed 		113 MB/s 148 MB/s Much faster peak random write.
+31%
Mixed
Peak Sequential Mixed IO Speed 		331 MB/s 838 MB/s Hugely faster peak mixed IO speed.
+153%
4K Mixed
Peak 4K Random Mixed IO Speed 		44.1 MB/s 59 MB/s Much faster peak random mixed IO.
+34%
SusWrite
Peak Sequential Sustained Write 60s Average 		440 MB/s 1116 MB/s Hugely faster peak sustained write speed.
+154%
Value & Sentiment 
+16%
Market Share
Based on 76,169,720 SSDs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.03 % Hugely higher market share.
+200% 		0.01 %
Value
Value For Money 		5.17 % 20.3 % Hugely better value.
+292%
User Rating
UBM User Rating 		54 % Slightly more popular.
+6% 		51 %
Price
Price (score) 		$150 Cheaper.
+23% 		$194
Nice To Haves 
+159%
Age
Newest 		140 Months 89+ Months Much more recent.
+36%
DQ Read
Peak 4K-64Thread Read Speed 		376 MB/s 1005 MB/s Hugely faster peak deep queue read.
+167%
DQ Write
Peak 4K-64Thread Write Speed 		330 MB/s 774 MB/s Hugely faster peak deep queue write.
+135%
AS-SSD Total
AS-SSD Total Score 		1,196 Pts 2824 Pts Hugely stronger server IO.
+136%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed 		155 MB/s 594 MB/s Hugely faster peak deep queue mixed IO.
+283%
ADQ Read
Avg. 4K-64Thread Read Speed 		332 MB/s 831 MB/s Hugely faster deep queue read.
+150%
ADQ Write
Avg. 4K-64Thread Write Speed 		245 MB/s 541 MB/s Hugely faster deep queue write.
+121%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed 		126 MB/s 433 MB/s Hugely faster deep queue mixed IO.
+244%
Specifications 
Capacity
Capacity 		128GB 480GB
Conclusion 
Average Bench 89.5%
Average Bench 158%
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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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