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MushkinMKNSSDCR240GB-DX
$181
SamsungMZ-7PD256BW
▲ 51716 ▼
 $181 

Controller: LSI Sandforce SF2281VB1-SDC. NAND: Toshiba 32Nm Toggle Mode. Release date: Q3 2011.

VS
▲ 5420,557 ▼

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

Effective Speed 
+27%
Real World Speed
Performance profile from 74,945 user samples
Benchmark your SSD here
1,826 User Benchmarks
Best Bench: 90% 26GB free
Worst Bench: 55% 89GB free (System drive)
Poor: 55% Great: 90%
SPEED RANK: 591st / 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 		74.7 % 95 % Faster effective speed.
+27%
Average Score 
+30%
Read
Avg. Sequential Read Speed 		368 MB/s 459 MB/s Faster read speed.
+25%
Write
Avg. Sequential Write Speed 		232 MB/s 367 MB/s Much faster write speed.
+58%
4K Read
Avg. 4K Random Read Speed 		28.4 MB/s 31 MB/s Slightly faster random read.
+9%
4K Write
Avg. 4K Random Write Speed 		77.6 MB/s 85.6 MB/s Faster random write.
+10%
Mixed
Avg. Sequential Mixed IO Speed 		257 MB/s 303 MB/s Faster mixed IO speed.
+18%
4K Mixed
Avg. 4K Random Mixed IO Speed 		34.3 MB/s 39.5 MB/s Faster random mixed IO.
+15%
SusWrite
Avg. Sustained Write Speed 		177 MB/s 312 MB/s Much faster sustained write speed.
+76%
Peak Score 
+31%
Read
Peak Sequential Read Speed 		430 MB/s 510 MB/s Faster peak read speed.
+19%
Write
Peak Sequential Write Speed 		297 MB/s 480 MB/s Much faster peak write speed.
+62%
4K Read
Peak 4K Random Read Speed 		34.8 MB/s 36.1 MB/s +4%
4K Write
Peak 4K Random Write Speed 		112 MB/s 114 MB/s +2%
Mixed
Peak Sequential Mixed IO Speed 		298 MB/s 368 MB/s Faster peak mixed IO speed.
+23%
4K Mixed
Peak 4K Random Mixed IO Speed 		44.6 MB/s 47.6 MB/s Slightly faster peak random mixed IO.
+7%
SusWrite
Peak Sequential Sustained Write 60s Average 		234 MB/s 477 MB/s Hugely faster peak sustained write speed.
+104%
Value & Sentiment 
+∞%
Market Share
Based on 77,431,148 SSDs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0 % 0.04 % Insanely higher market share.
+∞%
Value
Value For Money 		6 % 8.21 % Much better value.
+37%
User Rating
UBM User Rating 		51 % 54 % Slightly more popular.
+6%
Price
Price (score) 		$181 $175 +3%
Nice To Haves 
+13%
Age
Newest 		158 Months 145 Months Slightly more recent.
+8%
DQ Read
Peak 4K-64Thread Read Speed 		300 MB/s 385 MB/s Faster peak deep queue read.
+28%
DQ Write
Peak 4K-64Thread Write Speed 		263 MB/s 334 MB/s Faster peak deep queue write.
+27%
AS-SSD Total
AS-SSD Total Score 		982 Pts 1,221 Pts Stronger server IO.
+24%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed 		246 MB/s Much faster peak deep queue mixed IO.
+40% 		176 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed 		241 MB/s 346 MB/s Much faster deep queue read.
+44%
ADQ Write
Avg. 4K-64Thread Write Speed 		203 MB/s 262 MB/s Faster deep queue write.
+29%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed 		169 MB/s Faster deep queue mixed IO.
+15% 		147 MB/s
Specifications 
Capacity
Capacity 		240GB 256GB
Conclusion 
Average Bench 74.7%
Average Bench 95%

The Mushkin Chronos and Chronos Deluxe are both Sandforce 2881 based SSDs from Mushkin. The only difference between the two is their NAND Flash: Intel asynchronous 25Nm for the Chronos vs Toshiba 32Nm Toggle Mode for the Deluxe. The 32Nm Toggle NAND supports far higher write speeds as can be seen from this direct performance comparison of the two drives. Overall the Chronos Deluxe performs slightly above expectations for a Sandforce SF2281 drive, it has reasonable read speeds but still struggles when faced with writing incompressible data. With an effective (real world) speed of 347 MB/s the Chronos Deluxe lags the group leaders by 50% and as such there are far better drives, such as the Samsung Evo, available in today's market. [Jan '14 SSDrivePro]

MORE DETAILS

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]

MORE DETAILS

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Solid State Drives
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