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Samsung 250GB 850 Evo SSD
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Samsung 250GB 850 Evo SSD

  code: MZ75E250B
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What is 3D V-NAND and how does it differ from existing technology?

Samsung’s unique and innovative 3D V-NAND flash memory architecture is a breakthrough in overcoming the density limitations, performance and endurance of today’s conventional planar V-NAND architecture. 3D V-NAND is fabricated by stacking 32 cell layers vertically over one another rather than decreasing the cells dimensions and trying to fit itself onto a fixed horizontal space resulting in higher density and better performance utilising a smaller footprint.

Optimise daily computing with TurboWrite technology for unrivalled read / write speeds

Achieve the ultimate read / write performance to maximise your everyday computing experience with Samsung’s TurboWrite technology. You not only obtain more than a 10% better user experience than 840 EVO* but up to 1.9x faster random write speeds for 120 / 250 GB models** as well. The 850 EVO delivers the top of its class performance in sequential read (540 MB/s) and write (520 MB/s) speeds. Plus, you also gain optimised random performance in all QD for client PC usage scenario. *PCmark7 (250 GB ) : 6700(840 EVO) > 7600 (850 EVO) **Random Write (QD32, 120 GB) : 36000 IOPS (840 EVO) > 88000 IOPS (850 EVO)

Get into the fast lane with the improved RAPID mode

Samsung’s Magician software which provides Rapid Mode for 2x faster processing data speeds* on a system level by utilising unused PC memory (DRAM) as cache storage. The newest Magician increased the maximum memory usage in Rapid mode from 1 GB, in the previous 840 EVO version, to up to 4 GB with the 850 EVO when implementing 16 GB of DRAM. You also get a 2x performance* boost in all random Queue depth. *PCMARK7 RAW (250 GB) : 7500 > 15000 (Rapid mode)

Guaranteed endurance and reliability bolstered by 3D V-NAND technology

The 850 EVO delivers guaranteed endurance and reliability by doubling the TBW* compared to the previous generation 840 EVO** backed by an industry leading 5 year warranty. The 850 EVO through minimised performance degradation allows sustained performance improvements of up to 30% over the 840 EVO proving to be one of the most dependable storage devices***. *TBW : Total Bytes Written **TBW : 43 (840 EVO) > 75 (850 EVO 120 / 250 GB), 150 (850 EVO 500 / 1 TB) ***Sustained Performance (250 GB) : 3300 IOPS(840 EVO) > 6500 IOPS(850 EVO), Performance measured after 12 hours “Random Write” test

Compute longer with improved energy efficiency backed by 3D V-NAND

The 850 EVO delivers significantly longer battery life on your notebook with a controller optimised for 3D V-NAND now enabling Device Sleep at a highly efficient 2mW. The 850 EVO is now 25% more power efficient to the 840 EVO during write operations* thanks to 3D V-NAND only consuming half the energy than that of Planar 2D V-NAND. *Power (250 GB) : 3.2 Watt (840 EVO) > 2.4 Watt (850 EVO)

Secure valuable data through advanced AES 256 encryption

The 850 EVO comes fortified with the latest hardware-based full disk encryption engine. The AES 256 encryption-bit security technology secures data without any performance degradation and complies with TCG Opal 2.0. It is also compatible with Microsoft e-drive IEEE1667 so your data is protected at all times for your peace of mind.

Protect against overheating with a highly responsive Dynamic Thermal Guard

The 850 EVO’s Dynamic Thermal Guard constantly monitors and maintains ideal temperatures for the drive to operate in optimal conditions for the integrity of your data. When temperatures rise above an optimal threshold, the Thermal Guard automatically throttles temperatures down protecting your data while maintaining responsiveness to ensure your computer is always safe from overheating.

Level up to the 850 EVO simply without any hassle

In three simple steps the Samsung’s One-stop Install Navigator software easily allows you to migrate all the data and applications from the existing primary storage to the 850 EVO. The Samsung Magician software also allows you to optimise and manage your system best suited for your SSD.

Model Name / Number850 EVO / MZ-75E250
Capacity250 GB (1 GB=1 Billionbyte by IDEMA) * Actual usable capacity may be less (due to formatting, partitioning, operating system, applications or otherwise)
Cache MemorySamsung 512 MB Low Power DDR3 SDRAM
Storage MemorySamsung 32 layer 3D V-NAND
ApplicationClient PCs
InterfaceSATA 6 Gb/s Interface, compatible with SATA 3 Gb/s & SATA 1.5 Gb/s interface
ControllerSamsung MGX Controller
Form Factor2.5 inch Form Factor
Installation KitSATA to USB 3.0 connector & Spacer
TRIM SupportYes
S.M.A.R.T SupportYes
SoftwareMagician Software for SSD management
GC (Garbage Collection)Auto Garbage Collection Algorithm
Device Sleep Mode SupportYes
Sequential ReadUp to 540 MB/sec Sequential Read * Performance may vary based on system hardware & configuration
Sequential WriteUp to 520 MB/sec Sequential Write * Performance may vary based on system hardware & configuration
Random Read (4 KB, QD32)Up to 97000 IOPS Random Read * Performance may vary based on system hardware & configuration
Random Write (4KB, QD32)Up to 88000 IOPS Random Write * Performance may vary based on system hardware & configuration
Random Read (4 KB, QD1)Up to 10000 IOPS Random Read * Performance may vary based on system hardware & configuration
Random Write (4 KB, QD1)Up to 40000 IOPS Random Write * Performance may vary based on system hardware & configuration
WWN SupportWorld Wide Name supported
Reliability (MTBF)1.5 Million Hours Reliability (MTBF)
Shock1500 G & 0.5 ms (Half sine)
Encryption SupportAES 256 bit Encryption (Class 0) TCG / Opal IEEE1667 (Encrypted drive)
Dimension W x H x D (mm)mm 100 x 69.85 x 6.841
Weightg 41

Please note: We are only able to ship to Jersey, Channel Islands.

We offer an express next day delivery service. For this, please ensure your order is placed prior to 12noon the day before delivery is required. (Subject to availability) 

Delivery on all items retailing at £249.99 and above will be delivered free of charge.*

Any items under £249.99 will incur a £14.99 delivery charge.

You are welcome to collect your purchase(s) at any time during Powerhouse opening hours from the Customer Collection Depot at Queens Road. If it is more convenient for you to collect from our Don Street store, placing your order before 5pm will ensure your good(s) are ready for collection the following day. Please ensure that you bring your order confirmation reference and photographic ID i.e. passport, driving license or bus pass.

*Due to size and weight constraints Range Cookers and American Style Fridge Freezers incur a delivery charge of £79.99.

Disposal of an old American Style Fridge Freezer will incur a £30 charge, disposal of a standard sized fridge freezer will incur a £14.99 charge.

Please select your preferred delivery date and a member of the Powerhouse team will be in contact with confirmation of availability. As our delivery team for these larger appliances is sourced externally, we cannot guarantee your chosen date will be available but will liaise and confirm with you when would be most convenient.  If you have purchased an American Style Fridge Freezer with a dispenser that needs to be connected up to the plumbing we can supply a plumber to do this, however, this would incur an additional charge.


Integrated appliances can be delivered any day Monday - Saturday, however if requiring installation, this is only available on Mondays, Wednesdays and Fridays. For this integrated installation service there is a charge of £79.99 per appliance.


We cannot modify the delivery address entered at the time of your order.

If an order is placed online with a delivery address that differs from the card registered address we will carry out security checks to protect you from fraud.


We think you'll be happy with your purchase but in case you need to return anything, we're here to make things as easy and straight-forward as possible for you.

That's why we offer a 28 days no-fuss returns policy from when you received the order.

All you have to do is return the item/s to us or we can arrange this on your behalf, normally within 5 days at no cost. If the item is in pristine condition we will offer a full refund or a replacement if preferred.

If you would like to return an appliance, simply call the team on 01534 505 460 or email us websupport@jec.co.uk.

To find out more, please read our Terms & Conditions of Sale

Products we're unable to cancel, refund or exchange

We can't offer refunds or exchanges, unless faulty or not as described, on the following item is:

  • products which have been personalised for you such as custom spec products
  • computer software that has been opened
  • hair and dental care that has been opened
  • in ear headphones that has been opened

Where a product has been specially ordered for you, unless faulty, we're unable to refund or offer an exchange. We're unable to accept cancellations for these orders, unless within 48 hours of the order being placed. We'll make this clear when you place your order.

This does not affect your statutory rights.

Refund policy

We want you to be happy with your purchase. If you're not, just return the product to us or to one of our shops, following the instructions above, and we'll exchange or refund it to the credit or debit card of the person who originally placed and paid for the order. Please see below for products excluded from this policy.

Under the Distance Selling Regulations, if you buy online or by phone, your consumer rights entitle you to a full refund if you request one in writing within 7 working days of receipt. This includes any delivery charge, but excludes the products listed as exceptions below.



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