UserBenchmark: Samsung 840 Pro vs SanDisk Extreme II

SSD
RANKINGS

TEST
YOUR SSD

ADD TO PC
BUILD

SanDiskSDSSDXP-120G-G25

$130

SamsungMZ-7PD256BW

BUY • $190

BenchYourSSD

Real World Speed

Performance profile from 75,581 user samples

Benchmark your SSD here

2,462 User Benchmarks

Best Bench: 101% 112GB free
Worst Bench: 59% 87GB free

Poor: 59% Great: 101%

SPEED RANK: 408^th / 1072

73,119 User Benchmarks

Best Bench: 116% 238GB free
Worst Bench: 68% 11GB free (System drive)

Poor: 68% Great: 116%

SPEED RANK: 279^th / 1072


Effective Speed Effective SSD Speed		84.8 %			95 %	Faster effective speed. +12%


Read Avg. Sequential Read Speed	464 MB/s	+1%	459 MB/s
Write Avg. Sequential Write Speed	292 MB/s		367 MB/s	Faster write speed. +26%
4K Read Avg. 4K Random Read Speed	27.9 MB/s		31 MB/s	Faster random read. +11%
4K Write Avg. 4K Random Write Speed	78.7 MB/s		85.6 MB/s	Slightly faster random write. +9%
Mixed Avg. Sequential Mixed IO Speed	219 MB/s		303 MB/s	Much faster mixed IO speed. +38%
4K Mixed Avg. 4K Random Mixed IO Speed	32.5 MB/s		39.5 MB/s	Faster random mixed IO. +22%
SusWrite Avg. Sustained Write Speed	260 MB/s		312 MB/s	Faster sustained write speed. +20%


Read Peak Sequential Read Speed	509 MB/s		510 MB/s	+0%
Write Peak Sequential Write Speed	326 MB/s		480 MB/s	Much faster peak write speed. +47%
4K Read Peak 4K Random Read Speed	34.5 MB/s		36.1 MB/s	+5%
4K Write Peak 4K Random Write Speed	119 MB/s	+4%	114 MB/s
Mixed Peak Sequential Mixed IO Speed	251 MB/s		368 MB/s	Much faster peak mixed IO speed. +47%
4K Mixed Peak 4K Random Mixed IO Speed	40.5 MB/s		47.6 MB/s	Faster peak random mixed IO. +18%
SusWrite Peak Sequential Sustained Write 60s Average	323 MB/s		477 MB/s	Much faster peak sustained write speed. +48%

Market Share

Based on 75,655,577 SSDs tested

See market share leaders


Market Share Market Share (trailing 30 days)	0 %		0.05 %	Insanely higher market share. +∞%
Value Value For Money	5.19 %		7.72 %	Much better value. +49%
User Rating UBM User Rating	51 %		54 %	Slightly more popular. +6%
Price Price (score)	$130	Much cheaper. +32%	$190


Age Newest	131 Months	Slightly more recent. +5%	138 Months
DQ Read Peak 4K-64Thread Read Speed	345 MB/s		385 MB/s	Faster peak deep queue read. +12%
DQ Write Peak 4K-64Thread Write Speed	286 MB/s		334 MB/s	Faster peak deep queue write. +17%
AS-SSD Total AS-SSD Total Score	1,091 Pts		1,221 Pts	Stronger server IO. +12%
DQ Mixed Peak 4K-64Thread Mixed IO Speed	153 MB/s		176 MB/s	Faster peak deep queue mixed IO. +15%
ADQ Read Avg. 4K-64Thread Read Speed	300 MB/s		346 MB/s	Faster deep queue read. +15%
ADQ Write Avg. 4K-64Thread Write Speed	239 MB/s		262 MB/s	Slightly faster deep queue write. +10%
ADQ Mixed Avg. 4K-64Thread Mixed IO Speed	139 MB/s		147 MB/s	Slightly faster deep queue mixed IO. +6%


Capacity Capacity			120GB			256GB

The 120GB Sandisk Extreme II proved to be a disappointment. I was expecting the same blistering performance as I saw on its larger 240GB sibling but that proved not to be the case. Comparing the 120GB and 240GB Extreme II's reveals that the larger 240GB version has peak speed ratings that are approximately 35% faster that the 120GB Extreme II. The main weakness of the 120GB Extreme II is its sequential write speed which is just 305 MB/s vs 492 MB/s on the 240GB version. Reduced write ability at lower capacities is explained by fewer NAND modules which reduce a controllers ability to parallelize slow write operations across different memory banks. Overall the Sandisk Extreme II sits amongst the bottom 20% of performers in the 120-128GB capacity category. Several of the drives in the group test have comparable performance at both the 120 and 240 GB capacities, those drives are the ones to go for. ^{[Feb '14 SSDrivePro]}

MORE DETAILS

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

Systems with these SSDs

Top Builds that include these SSDs

Custom PC Builder (Start a new build) Build your perfect PC: compare component prices, popularity, speed and value for money

CHOOSE A COMPONENT:

CPU

GPU

SSD

HDD

RAM

MBD

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]

Group Test Results

Best user rated - User sentiment trumps benchmarks for this comparison.
Best value for money - Value for money is based on real world performance.
Fastest real world speed - Real World Speed measures performance for typical consumers.

How Fast Is Your SSD? (Bench your build) Size up your PC in less than a minute

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.

UserBenchmark of the month

Gaming

Desktop

ProGaming

CPU

GPU

SSD

HDD

RAM

USB

How it works

- Download and run UserBenchmark
- CPU tests include: integer, floating and string
- GPU tests include: six 3D game simulations
- Drive tests include: read, write, sustained write and mixed IO
- RAM tests include: single/multi core bandwidth and latency
- SkillBench (space shooter) tests user input accuracy
- Reports are generated and presented on userbenchmark.com
- Identify the strongest components in your PC
- See speed test results from other users
- Compare your components to the current market leaders
- Explore your best upgrade options with a virtual PC build
- Compare your in-game FPS to other users with your hardware

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?

What’s the difference between NAND and V-NAND?

What is sequential write speed?

What is sequential read speed?

What is incompressible data?

What is queue depth?

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?

What is the effective SSD speed index?

How is the AS SSD write score calculated?

How is the AS SSD read score calculated?

How is the AS SSD total score calculated?

ALL FAQs »

CPU	GPU	SSD
Intel Core i5-13600K $279	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 $184	Nvidia RTX 4070 $409	Samsung 860 Evo 250GB $46

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

MORE DETAILS

MORE DETAILS

CHOOSE A COMPONENT:

Group Test Results

UserBenchmark of the month

How it works

Frequently Asked Questions

Best User Rated

Feedback