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SamsungMZ-7PD128BW
MushkinMKNSSDCR240GB-DX
$181
▲ 542,764 ▼

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

VS
▲ 51716 ▼
 $181 

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

Effective Speed 
+20%
Real World Speed
Performance profile from 36,668 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
1,826 User Benchmarks
Best Bench: 90% 26GB free
Worst Bench: 55% 89GB free (System drive)
Poor: 55% Great: 90%
SPEED RANK: 591st / 1080
Effective Speed
Effective SSD Speed 		89.5 % Faster effective speed.
+20% 		74.7 %
Average Score 
+21%
Read
Avg. Sequential Read Speed 		444 MB/s Faster read speed.
+21% 		368 MB/s
Write
Avg. Sequential Write Speed 		336 MB/s Much faster write speed.
+45% 		232 MB/s
4K Read
Avg. 4K Random Read Speed 		30.5 MB/s Slightly faster random read.
+7% 		28.4 MB/s
4K Write
Avg. 4K Random Write Speed 		81.6 MB/s Slightly faster random write.
+5% 		77.6 MB/s
Mixed
Avg. Sequential Mixed IO Speed 		268 MB/s +4% 257 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed 		35.9 MB/s +5% 34.3 MB/s
SusWrite
Avg. Sustained Write Speed 		286 MB/s Much faster sustained write speed.
+62% 		177 MB/s
Peak Score 
+24%
Read
Peak Sequential Read Speed 		497 MB/s Faster peak read speed.
+16% 		430 MB/s
Write
Peak Sequential Write Speed 		445 MB/s Much faster peak write speed.
+50% 		297 MB/s
4K Read
Peak 4K Random Read Speed 		36.3 MB/s +4% 34.8 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.
+11% 		298 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed 		44.1 MB/s 44.6 MB/s +1%
SusWrite
Peak Sequential Sustained Write 60s Average 		440 MB/s Hugely faster peak sustained write speed.
+88% 		234 MB/s
Value & Sentiment 
+∞%
Market Share
Based on 77,435,504 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 % 6 % Better value.
+16%
User Rating
UBM User Rating 		54 % Slightly more popular.
+6% 		51 %
Price
Price (score) 		$150 Cheaper.
+17% 		$181
Nice To Haves 
+6%
Age
Newest 		145 Months Slightly more recent.
+8% 		158 Months
DQ Read
Peak 4K-64Thread Read Speed 		376 MB/s Faster peak deep queue read.
+25% 		300 MB/s
DQ Write
Peak 4K-64Thread Write Speed 		330 MB/s Faster peak deep queue write.
+25% 		263 MB/s
AS-SSD Total
AS-SSD Total Score 		1,196 Pts Stronger server IO.
+22% 		982 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed 		155 MB/s 246 MB/s Much faster peak deep queue mixed IO.
+59%
ADQ Read
Avg. 4K-64Thread Read Speed 		332 MB/s Much faster deep queue read.
+38% 		241 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed 		245 MB/s Faster deep queue write.
+21% 		203 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed 		126 MB/s 169 MB/s Much faster deep queue mixed IO.
+34%
Specifications 
Capacity
Capacity 		128GB 240GB
Conclusion 
Average Bench 89.5%
Average Bench 74.7%

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]

MORE DETAILS

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

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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]

Group Test Results

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 Frequently Asked Questions

Storage Devices FAQ
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What is 3D XPoint and how fast is it?
What’s the difference between SATA, PCIe and NVMe?
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Solid State Drives
What is the SSD value for money rating?
What is 4K 64 thread write speed?
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