Review Index:

Samsung 840 EVO 500GB and 1TB Full Review - TurboWrite TLC

Subject: Storage
Manufacturer: Samsung

Internals, Testing Methodology and System Setup


Opening an 840 EVO requires the removal of 3 pentalobe screws, two of which are hidden behind the drive label:

View Full Size

Once open we see the goods:

View Full Size

Samsung have opted for a 1.8" PCB, just as they did back with the 470 Series. While the 470 had 16 flash packages crammed within its smaller PCB, the 840 EVO enjoys much more free space.

View Full Size

View Full Size

The full 1TB is contained within only 8 flash packages, meaning Samsung is stacking those 19nm 128Gb dies 8-high within each package. It also means that if they choose to expand this to a full 2.5mm PCB design, Samsung could easily take this model to a 2TB (or higher) capacity point within a 2.5 inch package. Here's a final close-in shot of the new controller:

View Full Size

Testing Methodology

Our tests are a mix of synthetic and real-world benchmarks. PCMark, IOMeter, HDTach, HDTune, Yapt and our custom File Copy test round out the selection to cover just about all bases. If you have any questions about our tests just drop into the Storage Forum and we'll help you out! 

Test System Setup

We currently employ a pair of testbeds. Our trusty Z68 SandyBridge testbed sits along side a newer ASUS P8Z77-V Pro/Thunderbolt.Results between both boards have been +/- 2% of each other - well within the best data scatter of a typical benchmark.

PC Perspective would like to thank ASUS, Corsair, and Kingston for supplying some of the components of our test rigs. 

Hard Drive Test System Setup
CPU Intel Core i5-2500K
Motherboard Asus P8Z68-V Pro
Memory Kingston HyperX 4GB DDR3-2133 CL9
Hard Drive G.Skill 32GB SLC SSD
Sound Card N/A
Video Card Intel® HD Graphics 3000
Video Drivers Intel
Power Supply Corsair CMPSU-650TX
DirectX Version DX9.0c
Operating System Windows 7 X64
  • PCMark05
  • Yapt
  • IOMeter
  • HDTach
  • HDTune
  • PCPer File Copy Test
  • Write Caching Test


July 25, 2013 | 01:34 PM - Posted by Mark Strong (not verified)

Thank you for the quick review sir. Personally I would call this a no question automatic upgrade for a new PC build. I'm interested to hear your thoughts on where this stacks up in the grand scheme of things.

July 25, 2013 | 02:02 PM - Posted by Allyn Malventano

If the pricing holds (and that's a big IF since I have yet to see sub-$1/GB pricing hold), the EVO will become my default recommendation for everything but the most demanding enterprise use.

July 25, 2013 | 02:38 PM - Posted by Mark Strong (not verified)

Then let us hope with fingers crossed that the price roughly holds (within 10 - 20 dollars). Much appreciated sir.

July 25, 2013 | 03:14 PM - Posted by grommet

I didn't see in the article when these would be available- did I miss it, or are they not saying yet?

August 12, 2013 | 04:52 AM - Posted by Allyn Malventano

No hard date, but I'd imagine as quickly as they can get them out there.

July 25, 2013 | 04:44 PM - Posted by Thedarklord

Great review.

As someone who is about to jump onto the SSD train;

1)It looks like several SSD makers are releasing new products now/very soon (so is it better to wait?)

2)I personally like the Corsair lineup, anyone heard anything if they are exiting the market?, seems like their SSD market is getting scarce.

, Thanks

July 25, 2013 | 05:30 PM - Posted by Ram Rangaswamy (not verified)

Allyn Malventano: The last line of the article says "...Samsung 840 ECO..." instead of EVO.

Otherwise, love the article and insight!

July 25, 2013 | 10:01 PM - Posted by Tad (not verified)

LOL PCMO5? What the hell? and Iometer 2006? ROFLSAUCE! Its like I ran into an '80's website. Does your SSD wear parachute pants too?

July 26, 2013 | 05:23 PM - Posted by Photonboy (not verified)

If a tool works to accurately assess a product, why does it have to be made very recently?

An older product is also well understood and allows accurate comparisons to previous products that also tested with the same tools.

August 12, 2013 | 04:50 AM - Posted by Allyn Malventano

^ this.

July 29, 2013 | 03:54 PM - Posted by Moochacho (not verified)

Is there any benefit these days (performance or stability) to having one SSD for OS, another for programs and a third for data? Back in the day I used to have the OS on its own partition or even different drive, so it wouldn't get all fragged up. I currently have a 120GB OCZ Vertex3 for OS, 1TB Samsung Spinpoint for progs and 500GB WD Black for data and trying to eliminate spinning drives for new build.

July 31, 2013 | 03:06 AM - Posted by irdmoose

Hey Allyn, thanks for the great review. It looks like the bug you caught to get this review out may have been worth it, and I hope that you get well soon! How well do you think these drives will perform in a RAID-0 setup with say an Intel controller on either Ivybridge or Haswell systems?

August 12, 2013 | 04:50 AM - Posted by Allyn Malventano

They should be just fine, so long as the partition is correctly aligned (not an issue for Vista and newer). There may be a slight performance hit due to TRIM not passing through to a RAID-0 (which is still a mixed bag as far as it actually working), but it should be minimal impact for regular usage.

August 13, 2013 | 07:08 PM - Posted by jgstew

I think in the case of workloads with very little writing like a file server, the 840 EVO and similar SSDs could be an interesting replacement for something like this:

With a significantly lower $/GB and better read performance.

August 23, 2013 | 09:38 PM - Posted by klatch

Is there a concern that the flash in the turbowrite buffer is going to die early? or does it get load balanced around the drive? I was sort of expecting the buffer to actually be SLC, but if it is just making TLC operate as SLC is that functionally equivalent to it being SLC?

September 18, 2014 | 02:45 AM - Posted by Grand Nagus (not verified)

Allyn Malventano

What is the update on the 840 EVO problems?


If they don't fix the problem you should downgrade the review to Bronze or worse. :)

I bought this drive on PCPERs recommendation and now I'm pissed.

December 26, 2014 | 03:54 AM - Posted by Obat Kanker Vulva Herbal (not verified)

hii !!! The information you provide very useful and very nice
I am so to know the information about this
Thank you so much has been share the news of which excellent information with us
Obat Kanker Vulva Herbal

Post new comment

The content of this field is kept private and will not be shown publicly.
  • Lines and paragraphs break automatically.
  • Allowed HTML tags: <a> <em> <strong> <cite> <code> <ul> <ol> <li> <dl> <dt> <dd> <blockquote><p><br>
  • Web page addresses and e-mail addresses turn into links automatically.

More information about formatting options

By submitting this form, you accept the Mollom privacy policy.