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SamsungMZ-75E250B
OCZARC100-25SAT3-240G
$120
▲ 5640,704 ▼

Controller: Samsung Dual Core MGX. Memory: Samsung 40nm TLC V-NAND. Release date: Q4 2014.

VS
▲ 531,950 ▼
 $120 

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

Effective Speed 
+19%
Real World Speed
Performance profile from 963,390 user samples
Benchmark your SSD here
951,591 User Benchmarks
Best Bench: 124% 140GB free
Worst Bench: 72% 233GB free
Poor: 72% Great: 124%
SPEED RANK: 251st / 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 		103 % Faster effective speed.
+19% 		87 %
Average Score 
+22%
Read
Avg. Sequential Read Speed 		466 MB/s Faster read speed.
+28% 		363 MB/s
Write
Avg. Sequential Write Speed 		434 MB/s Slightly faster write speed.
+9% 		398 MB/s
4K Read
Avg. 4K Random Read Speed 		39.4 MB/s Much faster random read.
+69% 		23.3 MB/s
4K Write
Avg. 4K Random Write Speed 		94.6 MB/s Slightly faster random write.
+8% 		87.4 MB/s
Mixed
Avg. Sequential Mixed IO Speed 		370 MB/s Faster mixed IO speed.
+23% 		301 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed 		52.2 MB/s Much faster random mixed IO.
+57% 		33.2 MB/s
SusWrite
Avg. Sustained Write Speed 		247 MB/s 354 MB/s Much faster sustained write speed.
+43%
Peak Score 
+27%
Read
Peak Sequential Read Speed 		507 MB/s Faster peak read speed.
+24% 		410 MB/s
Write
Peak Sequential Write Speed 		492 MB/s Faster peak write speed.
+15% 		426 MB/s
4K Read
Peak 4K Random Read Speed 		47.6 MB/s Much faster peak random read.
+74% 		27.3 MB/s
4K Write
Peak 4K Random Write Speed 		129 MB/s Slightly faster peak random write.
+7% 		121 MB/s
Mixed
Peak Sequential Mixed IO Speed 		416 MB/s Faster peak mixed IO speed.
+29% 		323 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed 		64.6 MB/s Much faster peak random mixed IO.
+66% 		39 MB/s
SusWrite
Peak Sequential Sustained Write 60s Average 		328 MB/s 410 MB/s Faster peak sustained write speed.
+25%
Value & Sentiment 
+∞%
Market Share
Based on 77,585,568 SSDs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.64 % Insanely higher market share.
+∞% 		0 %
Value
Value For Money 		13.4 % Much better value.
+41% 		9.51 %
User Rating
UBM User Rating 		56 % Slightly more popular.
+6% 		53 %
Price
Price (score) 		$100 Cheaper.
+17% 		$120
Nice To Haves 
+20%
Age
Newest 		119 Months +3% 123 Months
DQ Read
Peak 4K-64Thread Read Speed 		386 MB/s Faster peak deep queue read.
+22% 		317 MB/s
DQ Write
Peak 4K-64Thread Write Speed 		362 MB/s +3% 352 MB/s
AS-SSD Total
AS-SSD Total Score 		1,290 Pts Stronger server IO.
+16% 		1,108 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed 		370 MB/s Much faster peak deep queue mixed IO.
+43% 		258 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed 		354 MB/s Faster deep queue read.
+28% 		277 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed 		308 MB/s +5% 294 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed 		320 MB/s Much faster deep queue mixed IO.
+42% 		226 MB/s
Specifications 
Capacity
Capacity 		250GB 240GB
Conclusion 
Average Bench 103%
Average Bench 87%

The 250GB Samsung 850 Evo has a similar architecture to its hugely successful predecessor, the 840 Evo. Both drives are TLC based but the 850 uses 3D V-NAND as opposed to regular NAND. Both drives also feature a Turbowrite cache (TWC) which buffers up to 3GB of writes. The TWC enables high burst write speeds but when the cache exhausts write speeds drop to 300 MB/s. Comparing the 850 and 840 Evos shows that effective speed, has improved by 11% and the warranty has been extended from three to five years but prices are also up by 11%. The 850 Evo does put in superb benchmarks (second only to the 850 Pro) but these are only valid within the TWC. At current price levels the 850 Evo struggles to compete with the value leaders. [Dec '14 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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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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Solid State Drives
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