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SamsungMZ-7KE256BW
SamsungMZ-7TE250BW
▲ 5441,223 ▼

Controller: Samsung Triple Core MEX. Memory: Samsung 40nm MLC V-NAND. Release date: Q3 2014.

VS
▲ 5335,450 ▼

Controller: Samsung 3 Core MEX. Memory: Samsung 19nm Toggle Mode TLC. Release date: Q3 2013.

Effective Speed 
+6%
Real World Speed
Performance profile from 359,044 user samples
Benchmark your SSD here
141,929 User Benchmarks
Best Bench: 124% 238GB free
Worst Bench: 71% 71GB free (System drive)
Poor: 71% Great: 124%
SPEED RANK: 256th / 1080
217,115 User Benchmarks
Best Bench: 118% 68GB free
Worst Bench: 64% 231GB free
Poor: 64% Great: 118%
SPEED RANK: 284th / 1080
Effective Speed
Effective SSD Speed 		102 % Slightly faster effective speed.
+6% 		95.9 %
Average Score 
+8%
Read
Avg. Sequential Read Speed 		469 MB/s +1% 465 MB/s
Write
Avg. Sequential Write Speed 		396 MB/s +1% 394 MB/s
4K Read
Avg. 4K Random Read Speed 		33.9 MB/s 38.8 MB/s Faster random read.
+14%
4K Write
Avg. 4K Random Write Speed 		89.6 MB/s Slightly faster random write.
+5% 		85.3 MB/s
Mixed
Avg. Sequential Mixed IO Speed 		334 MB/s 347 MB/s +4%
4K Mixed
Avg. 4K Random Mixed IO Speed 		44.1 MB/s 48 MB/s Slightly faster random mixed IO.
+9%
SusWrite
Avg. Sustained Write Speed 		346 MB/s Much faster sustained write speed.
+77% 		195 MB/s
Peak Score 
+7%
Read
Peak Sequential Read Speed 		515 MB/s +2% 507 MB/s
Write
Peak Sequential Write Speed 		488 MB/s 489 MB/s +0%
4K Read
Peak 4K Random Read Speed 		43.6 MB/s 46.7 MB/s Slightly faster peak random read.
+7%
4K Write
Peak 4K Random Write Speed 		125 MB/s Slightly faster peak random write.
+5% 		119 MB/s
Mixed
Peak Sequential Mixed IO Speed 		383 MB/s 418 MB/s Slightly faster peak mixed IO speed.
+9%
4K Mixed
Peak 4K Random Mixed IO Speed 		56.7 MB/s 59.8 MB/s Slightly faster peak random mixed IO.
+5%
SusWrite
Peak Sequential Sustained Write 60s Average 		484 MB/s Much faster peak sustained write speed.
+62% 		299 MB/s
Value & Sentiment 
+30%
Market Share
Based on 77,606,037 SSDs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.08 % 0.17 % Hugely higher market share.
+113%
Value
Value For Money 		12.5 % 12.5 % +0%
User Rating
UBM User Rating 		54 % +2% 53 %
Price
Price (score) 		$110 $99 Cheaper.
+10%
Nice To Haves 
+13%
Age
Newest 		124 Months Slightly more recent.
+9% 		136 Months
DQ Read
Peak 4K-64Thread Read Speed 		388 MB/s +1% 383 MB/s
DQ Write
Peak 4K-64Thread Write Speed 		361 MB/s 362 MB/s +0%
AS-SSD Total
AS-SSD Total Score 		1,280 Pts +1% 1,273 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed 		356 MB/s Much faster peak deep queue mixed IO.
+50% 		237 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed 		344 MB/s +2% 337 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed 		282 MB/s 293 MB/s +4%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed 		295 MB/s Much faster deep queue mixed IO.
+45% 		203 MB/s
Specifications 
Capacity
Capacity 		256GB 250GB
Conclusion 
Average Bench 102%
Average Bench 95.9%

The 256GB Samsung 850 Pro is the fastest consumer SSD we have seen to date. Thanks to Samsung's new 3D V-NAND the 850 Pro has lower power consumption and better performance, albeit marginally, than both the 840 Evo and 840 Pro. Looking at the benchmark figures for the 840 and 850 Pros shows that the effective performance improvement is 10% whereas the 850 Pro beats the 840 Evo by 16%. These drives effectively saturate SATA 3.0 making it difficult to distinguish between them in day-to-day use. At current prices the 850 Pro is prohibitively expensive, prices need to drop by 15% before it approaches the 840 Pro from a value perspective. Samsung may release a value orientated 850 Evo soon, but for now "most" users are better off with the 840 Pro. [Oct '14 SSDrivePro]

MORE DETAILS

The Evo is remarkable in that, like the Sandisk Extreme II, it features a second level cache. For the 250 GB Evo this consists of a 3 GB Turbowrite cache (TWC) which is a block of high speed Flash Memory. When the TWC is exhausted write speeds drop by approximately 50% but that won't often happen under typical consumer workloads. In terms of raw performance, even with its cache, the Evo still isn't the fastest drive. With a real world speed index reading of 439 MB/s the EVO is however, within reach of the two speed leaders (Vector and 850 Pro). At a price point of $130 the Evo is around 30% cheaper making it the best value for money SSDs I have seen in 2014. Comparing the Evo and the Sandisk Ultra Plus shows that the Evo is the winner but the Sandisk may be a viable alternative thanks to its cache-free, and therefore more consistent performance during extended writes. [Aug '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
What is sustained sequential write speed?
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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?
Can CPU power saving states (C1,C2,C3) impact SSD speed?
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Brands make boatloads on flagships like the 4090 and 14900KS. We help users get similar real-world performance for less money.
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We don't pay youtubers, so they don't praise us. Moreover, our data obstructs youtubers who promote overpriced or inferior products.
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The Best
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Intel Core i5-12600K $160Nvidia RTX 4060-Ti $389WD Black SN850X M.2 1TB $80
Intel Core i5-12400F $111Nvidia RTX 4070 $500Crucial T700 M.2 4TB $330
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