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SamsungMZ-7PD256BW
OCZARC100-25SAT3-240G
$120
▲ 5420,557 ▼

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

VS
▲ 531,950 ▼
 $120 

Controller: Indilinx Barefoot 3. Flash Memory: Toshiba A19nm MLC. Release date: Q3 2014.

Effective Speed 
+9%
Real World Speed
Performance profile from 84,918 user samples
Benchmark your SSD here
73,119 User Benchmarks
Best Bench: 116% 238GB free
Worst Bench: 68% 11GB free (System drive)
Poor: 68% Great: 116%
SPEED RANK: 287th / 1080
11,799 User Benchmarks
Best Bench: 101% 139GB free
Worst Bench: 65% 82GB free
Poor: 65% Great: 101%
SPEED RANK: 378th / 1080
Effective Speed
Effective SSD Speed 		95 % Slightly faster effective speed.
+9% 		87 %
Average Score 
+8%
Read
Avg. Sequential Read Speed 		459 MB/s Faster read speed.
+26% 		363 MB/s
Write
Avg. Sequential Write Speed 		367 MB/s 398 MB/s Slightly faster write speed.
+8%
4K Read
Avg. 4K Random Read Speed 		31 MB/s Much faster random read.
+33% 		23.3 MB/s
4K Write
Avg. 4K Random Write Speed 		85.6 MB/s 87.4 MB/s +2%
Mixed
Avg. Sequential Mixed IO Speed 		303 MB/s +1% 301 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed 		39.5 MB/s Faster random mixed IO.
+19% 		33.2 MB/s
SusWrite
Avg. Sustained Write Speed 		312 MB/s 354 MB/s Faster sustained write speed.
+13%
Peak Score 
+16%
Read
Peak Sequential Read Speed 		510 MB/s Faster peak read speed.
+24% 		410 MB/s
Write
Peak Sequential Write Speed 		480 MB/s Faster peak write speed.
+13% 		426 MB/s
4K Read
Peak 4K Random Read Speed 		36.1 MB/s Much faster peak random read.
+32% 		27.3 MB/s
4K Write
Peak 4K Random Write Speed 		114 MB/s 121 MB/s Slightly faster peak random write.
+6%
Mixed
Peak Sequential Mixed IO Speed 		368 MB/s Faster peak mixed IO speed.
+14% 		323 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed 		47.6 MB/s Faster peak random mixed IO.
+22% 		39 MB/s
SusWrite
Peak Sequential Sustained Write 60s Average 		477 MB/s Faster peak sustained write speed.
+16% 		410 MB/s
Value & Sentiment 
+∞%
Market Share
Based on 77,585,568 SSDs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.05 % Insanely higher market share.
+∞% 		0 %
Value
Value For Money 		8.21 % 9.51 % Better value.
+16%
User Rating
UBM User Rating 		54 % +2% 53 %
Price
Price (score) 		$175 $120 Much cheaper.
+31%
Nice To Haves 
+10%
Age
Newest 		145 Months 123 Months More recent.
+15%
DQ Read
Peak 4K-64Thread Read Speed 		385 MB/s Faster peak deep queue read.
+21% 		317 MB/s
DQ Write
Peak 4K-64Thread Write Speed 		334 MB/s 352 MB/s Slightly faster peak deep queue write.
+5%
AS-SSD Total
AS-SSD Total Score 		1,221 Pts Stronger server IO.
+10% 		1,108 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed 		176 MB/s 258 MB/s Much faster peak deep queue mixed IO.
+47%
ADQ Read
Avg. 4K-64Thread Read Speed 		346 MB/s Faster deep queue read.
+25% 		277 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed 		262 MB/s 294 MB/s Faster deep queue write.
+12%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed 		147 MB/s 226 MB/s Much faster deep queue mixed IO.
+54%
Specifications 
Capacity
Capacity 		256GB 240GB
Conclusion 
Average Bench 95%
Average Bench 87%

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

The 240GB OCZ ARC has a solid performance profile with particularly strong 4K speeds. The ARC is positioned below both OCZ's enthusiast Vector 150 and the mainstream Vertex 460 but based on hardware specs there is very little separating the drives (newer NAND on the ARC). Comparing the Vertex 460 and ARC shows that the ARC lags particularly in terms of sequential write speed but the overall difference in effective speed is marginal. The broad performance equivalence coupled with the fact that the Vertex 460 is available at the same price point makes the 240GB ARC somewhat redundant for the time being. Given that the ARC is relatively new, prices are likely to drop significantly over the coming months at which point the ARC may make more sense. [Sep '14 SSDrivePro]

MORE DETAILS

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Solid State Drive Rankings (Price vs Performance) November 2024 SSD Rankings

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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Solid State Drives
What is the SSD value for money rating?
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