Samsung SSD 840 EVO 250GB & 1TB Drives Tested

Article Index:   

Samsung has been aggressively bolstering its solid state drive line-up for the last couple of years. While some of Samsung’s earliest drives may not have particularly stood-out versus the competition at the time, the company’s 830 series and more recently the 840 series of solid state drives—especially the 840 Pro--have been excellent, both in terms of value and overall performance in their target markets.

Today we’re going to give you a taste of a couple of Samsung’s latest consumer-class solid state drives in the just-announced the 840 EVO series of products. As the name suggests, the SSD 840 EVO series of drives are an evolution of the Samsung 840 series. These drives use the latest TLC NAND flash to come out of Samsung’s fab, along with an updated controller, and also feature some interesting software that can significantly impact performance as well. Take a look at the specifications for the new Samsung SSD 840 series of drives below and then strap yourself in as we take a look at one of the more interesting solid state drives to come across our test bench in quite a while...

Samsung SSD 840 EVO Series
Specifications & Features
Usage Application  Client PCs* 
Capacity  120GB, 250GB, 500GB, 750GB and 1TB 
Dimensions (L* W* H)  100 x 69.85 x 6.8 (mm) 
Interface  SATA 6Gb/s (compatible with SATA 3Gb/s and SATA 1.5Gb/s) 
Form Factor  2.5-inch 
Controller  Samsung MEX controller 
NAND Flash Memory  1x nm Samsung Toggle DDR 2.0 NAND Flash Memory (400Mbps) 
DRAM Cache Memory  256MB (120GB) or 512MB(250GB&500GB) or 1GB (750&1TB) LPDDR2 
Performance Sequential Read: Max. 540 MB/s 
Sequential Write: Max. 520 MB/s (250GB/500GB/750GB/1TB), 410 MB/s (120GB) 
4KB Random Read (QD1): Max. 10,000 IOPS
4KB Random Write(QD1): Max. 33,000 IOPS
4KB Random Read(QD32): Max. 98,000 IOPS (500GB/750GB/1TB), 97,000 IOPS (250GB), 94,000 IOPS (120GB)
4KB Random Write(QD32): Max. 90,000 IOPS (500GB/750GB/1TB), 66,000 IOPS (250GB), 35,000 IOPS (120GB)
TRIM Support  Yes (Requires OS Support) 
Garbage Collection  Yes 
S.M.A.R.T  Yes 
Encryption  AES 256-bit Full Disk Encryption (FDE)
PSID printed in SSD label 
Weight  Max. 53g (1TB) 
Reliability  MTBF: 1.5 million hours 
Power Consumption  Average :100mW*** (Typical) Idle : 45mW (Typical, DIPM ON) 
Temperature Operating: 0°C to 70°C
Non-Operating: -55°C to 95°C 
Humidity  5% to 95%, non-condensing 
Vibration  Operating: Random: 2.17Grms (7~800Hz) 
Non-Operating:  Random: 3.08Grms (7~800Hz) 
Shock  1500G & 0.5ms (Half sine) 
3 years limited
120GB at $109.99 and 250GB at $189.99 currently

If you really spent the time to go through the specifications listed here, you’ll no doubt have noticed that Samsung will be offering drives in the 840 EVO series with capacities ranging from 120GB all the way up to a whopping 1TB. Like other SSDs, performance varies between the different capacities, but overall the 840 EVO series is poised to offer class-leading performance, if Samsung’s numbers hold true in the real-world, of course. Rest assured, we’ll be finding out shortly.

Along with all of those different capacities, Samsung will also be offering various retail products targeting different market segments. There will be standalone drives in all capacities offered for desktop users and for mobile users, Samsung will be offering kits that include migrations software, a USB adapter, and 7mm to 9mm shim as well. All of the actual drives used in the desktop and mobile variants, however, will be similar—it’s only the bundled accessories that will be different.

Image gallery

Related content


realneil one year ago

The 1TB drive is drool worthy.

(honestly, they all are)

BobbyChippyTostitos one year ago

I bought a 250, cannot wait for rome total war with my new rig. I also found games like OOTP Baseball run 10x times better on SSDs.

SmogHog one year ago

How does the drive perform when it's the primary boot drive with an OS on it and filled 25%,50 % and 75%.

Who uses their SSD with 0% of data on it and not as the boot drive?

What good are reviews of empty drives tested from another drive that's in safe mode.

Dave_HH one year ago

It's all relative. If you want that kind of data, just look at out IOMeter tests. It near fills the drive and then hits it with a continuous read/write pattern of random workloads. You're asking an interesting question but if you look at the data and actually read about the testing, the information you're looking for is in there.

realneil one year ago

[quote user="SmogHog"]Who uses their SSD with 0% of data on it and not as the boot drive?[/quote]

On one of my PCs, I use a 256GB SSD as boot drive and I have a 120GB SSD as my Steam drive.

I have a 480GB SSD that's going into another PC soon. It will be my OS drive and a 240GB SSD will be the Steam drive on it.

Both PCs will have platter drives for mass storage. SSD Prices have dropped a lot in the past few years,........

spock one year ago

Solid-state drives are one of the best drivers on the market but they have a very high pricetag like this one for instance Samsung 840 EVO Series 1TB SSD it has a pricetag of $799. I have noticed that the price range solid-state drives start as low as $75 for a 30 gigabyte up to $799 for 1 TB. I am currently running a 256 GB hard drive I would like to upgrade the prices to high from me to buy one it would be nice one day see the prices drop down to a point where it would be affordable to upgrade to a new hard drive.

RyanEvans one year ago

$799 for 1TB!! No way!! this is too expensive & not sure on the reliability aspect as well since this happens to be recently launched. I am quite contented & happy with my 240GB Kingston hyperx 3K boot volume. The advantage I notice in my piece of hardware is the sandforce controller which is very smart in terms of incompressible data handling & also manages the overall performance of the SSD better!

cloef one year ago

For those of us who are curious about the longevity of the new 19nm TLC there is an endurance test recently launched over at

BigKihd one year ago

I would be amazing to get this, these are such great drives. Maybe one day ;)

FuadEfendi 6 months ago

Hi Marco,

Thank you for the excellent review; I'd like to add important point: WARRANTY.

1) 840 PRO, 5 years limited (client PC use only)***; *** For enterprise applications, 5 years limited warranty assumes a maximum average workload of 40GB/day (calculated based on host writes and on the industry standard of 3-month data retention). Workloads in excess of 40GB/day are not covered under warranty.

2) 840 EVO, 3 years limited.


Post a Comment
or Register to comment