UserBenchmark: Samsung 840 Evo vs SanDisk Extreme

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SanDiskSDSSDX-240G-G25

BUY • $180

SamsungMZ-7TE250BW

BUY • $95

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Real World Speed

Performance profile from 224,149 user samples

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7,034 User Benchmarks

Best Bench: 91% 220GB free
Worst Bench: 55% 47GB free (System drive)

Poor: 55% Great: 91%

SPEED RANK: 553^rd / 1072

217,115 User Benchmarks

Best Bench: 118% 68GB free
Worst Bench: 64% 231GB free

Poor: 64% Great: 118%

SPEED RANK: 276^th / 1072


Effective Speed Effective SSD Speed		76.2 %			95.9 %	Faster effective speed. +26%


Read Avg. Sequential Read Speed	375 MB/s	465 MB/s	Faster read speed. +24%
Write Avg. Sequential Write Speed	232 MB/s	394 MB/s	Much faster write speed. +70%
4K Read Avg. 4K Random Read Speed	30 MB/s	38.8 MB/s	Faster random read. +29%
4K Write Avg. 4K Random Write Speed	77.4 MB/s	85.3 MB/s	Faster random write. +10%
Mixed Avg. Sequential Mixed IO Speed	253 MB/s	347 MB/s	Much faster mixed IO speed. +37%
4K Mixed Avg. 4K Random Mixed IO Speed	34.7 MB/s	48 MB/s	Much faster random mixed IO. +38%
SusWrite Avg. Sustained Write Speed	172 MB/s	195 MB/s	Faster sustained write speed. +13%


Read Peak Sequential Read Speed	436 MB/s	507 MB/s	Faster peak read speed. +16%
Write Peak Sequential Write Speed	260 MB/s	489 MB/s	Hugely faster peak write speed. +88%
4K Read Peak 4K Random Read Speed	36.7 MB/s	46.7 MB/s	Faster peak random read. +27%
4K Write Peak 4K Random Write Speed	115 MB/s	119 MB/s	+3%
Mixed Peak Sequential Mixed IO Speed	276 MB/s	418 MB/s	Much faster peak mixed IO speed. +51%
4K Mixed Peak 4K Random Mixed IO Speed	43.9 MB/s	59.8 MB/s	Much faster peak random mixed IO. +36%
SusWrite Peak Sequential Sustained Write 60s Average	212 MB/s	299 MB/s	Much faster peak sustained write speed. +41%

Market Share

Based on 75,637,834 SSDs tested

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Market Share Market Share (trailing 30 days)	0.01 %	0.14 %	Insanely higher market share. +1,300%
Value Value For Money	6.14 %	12.9 %	Hugely better value. +110%
User Rating UBM User Rating	51 %	53 %	+4%
Price Price (score)	$180	$95	Much cheaper. +47%


Age Newest	146 Months		129 Months	More recent. +12%
DQ Read Peak 4K-64Thread Read Speed	302 MB/s		383 MB/s	Faster peak deep queue read. +27%
DQ Write Peak 4K-64Thread Write Speed	241 MB/s		362 MB/s	Much faster peak deep queue write. +50%
AS-SSD Total AS-SSD Total Score	965 Pts		1,273 Pts	Much stronger server IO. +32%
DQ Mixed Peak 4K-64Thread Mixed IO Speed	240 MB/s	+1%	237 MB/s
ADQ Read Avg. 4K-64Thread Read Speed	272 MB/s		337 MB/s	Faster deep queue read. +24%
ADQ Write Avg. 4K-64Thread Write Speed	203 MB/s		293 MB/s	Much faster deep queue write. +44%
ADQ Mixed Avg. 4K-64Thread Mixed IO Speed	191 MB/s		203 MB/s	Slightly faster deep queue mixed IO. +6%


Capacity Capacity			240GB			250GB

The Sandisk Extreme was once a good choice of SSD thanks to its extremely (pun intended) competitive price. In terms of performance the Extreme would of course obliterate any regular hard drive but at 16 months old the Extreme can no longer compete with more recent SSDs. In terms of typical consumer workloads the Sandisk delivers below average performance and is even less capable when it comes to server workloads scoring a total of just 761 on the AS-SSD benchmark. The weaknesses in performance are a consequence of the now dated Sandforce SF2281VB1 controller which delivers sub-optimal compressible transfer rates. The best thing the Sandisk Extreme has going for it is that its successor, the Extreme II, was just recently released. ^{[Jun '13 SSDrivePro]}

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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]}

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

Welcome to our 2.5" and M.2 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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Welcome to our PC speed test tool. UserBenchmark will test your PC and compare the results to other users with the same components. You can quickly size up your PC, identify hardware problems and explore the best value for money upgrades.

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Frequently Asked Questions

Storage Devices FAQ

What is sustained sequential write speed?

What’s the difference between SLC, MLC and TLC?

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

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CPU	GPU	SSD
Intel Core i5-13600K $273	Nvidia RTX 4060 $300	Crucial MX500 250GB $40
Intel Core i5-12400F $134	Nvidia RTX 4060-Ti $385	Samsung 850 Evo 120GB $80
Intel Core i5-12600K $186	Nvidia RTX 4070 $409	Samsung 860 Evo 250GB $52

HDD	RAM	USB
Seagate Barracuda 1TB (2016) $39	Corsair Vengeance LPX DDR4 3200 C16 2x8GB $40	SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $35	Corsair Vengeance LPX DDR4 3000 C15 2x8GB $43	SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $51	G.SKILL Trident Z DDR4 3200 C14 4x16GB $351	SanDisk Ultra Fit 32GB $16

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