Review Index:

Samsung 850 EVO 4TB 2.5" SATA SSD Review - Speedy Behemoth

Subject: Storage
Manufacturer: Samsung

Introduction, Specifications, and Packaging


Everyone expects SSD makers to keep pushing out higher and higher capacity SSDs, but the thing holding them back is sufficient market demand for that capacity. With that, it appears Samsung has decided it was high time for a 4TB model of their 850 EVO. Today we will be looking at this huge capacity point, and paying close attention to any performance dips that sometimes result in pushing a given SSD controller / architecture to extreme capacities.

View Full Size

This new 4TB model benefits from the higher density of Samsung’s 48-layer V-NAND. We performed a side-by-side comparison of 32 and 48 layer products back in March, and found the newer flash to reduce Latency Percentile profiles closer to MLC-equipped Pro model than the 32-layer (TLC) EVO:

View Full Size

Latency Percentile showing reduced latency of Samsung’s new 48-layer V-NAND

We’ll be looking into all of this in today’s review, along with trying our hand at some new mixed paced workload testing, so let’s get to it!

Read on for our full review of the Samsung 850 EVO 4TB SATA SSD!

Specifications (source):

View Full Size

Specs are, well, boring. It’s mostly the same exact story as it was since the 500GB model of the 850 EVO, with a bump in max write power to 3.6W and standby power increases to 10mW on this highest capacity part. Endurance borrows the 2TB model’s 300 TBW rating (Samsung historically rates endurance in capacity pairs, so no cause for alarm there).


View Full Size

Standard Samsung packaging carried forward from previous models. The CD is a bit useless given modern system configurations (What’s a CD, anyway?).

Video News

July 12, 2016 | 10:44 AM - Posted by wcg

I think there is a demand for high capacity SSDs it's just the price is nowhere near where it needs to be. As the price comes down, demand goes up as we learned in Economics 101 :). Maybe when we see $0.20/GB. Are SSD prices artificially high? Seems like profit-taking at this point.

July 12, 2016 | 11:07 AM - Posted by Anonymous (not verified)

At the risk of being pedantic, saying that demand goes up is slightly misleading. Only quantity demanded will increase when price decreases. Demand also depends on other factors other than price (i.e quality of product, price of other competing SSDs)

Why wouldn't Samsung want to maximise profits if they're the only ones with consumer SSDs with 4TB capacity?

July 12, 2016 | 03:13 PM - Posted by remc86007

Thank you. I'm glad I'm not the only one that cringed a little when I read the original comment.

July 14, 2016 | 09:11 AM - Posted by wcg

By demand I did mean quantity demanded, the demand curve remains the same. My point was the large SSD demand is there just not at this price.

July 12, 2016 | 11:19 AM - Posted by Anonymous (not verified)

The 2TB 850 EVO is going for $635(Sale Price) at Amazon, so $1270 for 2 drives and 4TB "total". That's around $0.32/GB and what is the performance metrics for 2/2TB drives in various raid/other configurations.

July 12, 2016 | 12:03 PM - Posted by Allyn Malventano

So long as you're on a desktop with Intel RST, almost every performance metric doubles when shifting to a pair of SATA devices. If you need 4TB on desktop, a pair of 2TB would be the way to go, but pay attention to the yet-to-be-fixed performance issues we noted with the 2TB model. It's possible that the 48-layer version of the same capacity fixed that issue, but we don't have a sample to test.

July 12, 2016 | 01:52 PM - Posted by patrickjp93 (not verified)

We already have $0.20/GB prices for SSDs. Simply go to pcpartpicker and sort by price/GB

July 12, 2016 | 03:11 PM - Posted by CNote (not verified)

I have a couple cheap silicon power SSDs and they are meh at best, then again they are the 120gb version not 480.

July 14, 2016 | 09:12 AM - Posted by wcg

But not high quality SSDs in large capacities. Obviously the 1TB+ SSD market is pretty pricey still. My point is there will be a large demand once the price becomes more reasonable.

October 20, 2016 | 03:45 PM - Posted by Anonymous (not verified)

TLC is still relatively new so not sure if it's "price taking" so much as Samsung trying to get a reasonable ROIC on all the R&D they took to bring TLC to market in the first place.

July 12, 2016 | 12:59 PM - Posted by CNote (not verified)

I grabbed 2 250gb evos on amazon for 78 each or ~$.31 per gig... hopefully they get down there again. Made for a fun raid 0.

July 12, 2016 | 03:05 PM - Posted by John H (not verified)

300TBW = the flash is rated for 75 write cycles before kaput(warranty)?

July 12, 2016 | 03:12 PM - Posted by Anonymous (not verified)

I don't like the idea of having TLC. I would be willing to pay a bit more and have the pro version with a warranty of more than 300TBW. Allyn, do you know when will Samsung release the pro version?

July 12, 2016 | 08:05 PM - Posted by Anonymous (not verified)

That's wonderful, too bad I won't be able to afford it. I can't even afford the 1 TB EVO yet.

July 12, 2016 | 09:40 PM - Posted by Cyclops

So want, such money, can't afford.

July 15, 2016 | 02:29 PM - Posted by Eric (not verified)

I bought the muschkin 1tb when it first came out. It has been solid for my z97 build. What I've seen so far, their 4tb is supposed to be a good deal when it comes out. I'll pair that with my 950 pro 512gig in my laptop I just purchased. Do believe it'll be a good replacement for the 7200 rpm drive that's in there. Maybe it'll even push the price of this samsung drive down, 4tb ssd with rapid mode with magician would be solid also.

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

This question is for testing whether you are a human visitor and to prevent automated spam submissions.