Samsung SSD 870 QVO review: the Amazing 8 TB of capacity in a SATA SSD

Samsung SSD 870 QVO review: the Amazing 8 TB of capacity in a SATA SSD drive

The Samsung 870 QVO (‘Q’, as in the 4-bit-QLC) is our first look at a drive that eventually ship with a whopping 8 TB of NAND on Board. Announced Tuesday, the new top-of-the capacities are available, so a new flock of 4 TB models. Samsung sent us the 2TB version to test. It is a great daily performer; however, if you are from the cache (which is not often), write speed dramatically.

specs and pricing

A standard 2.5-inch SATA 6gbit / s SSD, which is 870 QVO currently available for pre-order in a few of his capacities: 2 TB,  we tested ($250 from Newegg), and 4 TB ($500 from Newegg “do not Remove” product-link). The 1 TB capacity is on sale now for $130 on Amazon “do not Remove” product-link or $130 from Newegg “do not Remove” product-link.  in the $130/1TB, $250/2 TB (tested), and $500/4TB flavors. The 8 TB model will be available in August for $900. This is significantly cheaper than the high-capacity 4 TB OWC Aura P12 and 8 TB Sabrent Rocket Q NVMe drives, which we covered recently, and far greater savings delta as we normally see between NVMe and SATA. 

samsung870qvo dynamic Samsung

Samsung 870 QVO is a significant improvement on the older 860 QVO, and it offers good everyday performance. 

Samsung uses its own MKX-controller, and there is 1 GB of DRAM cache for every 1 TB 96-layer, QLC (Quad-Level Cell/4-bit) stacked/layered/3D-NAND on-Board. The drives apparently make a reservation about 4.5 percent of the NAND as an SLC cache, if our tests with the 2-TB drive purely indicative.

SLC cache MLC/TLC/QLC treated as SLC by writing only one bit instead of four, or if you prefer, on/off, instead of one of 16 possible States. This is much, much faster operation, because there are little to no error-checking. The contents of the SLC cache, not later transferred to NAND cache.

870 QVO is warrantied for three years, and is designed and Written for 360TBW (TB) per 1 TB of capacity. Samsung bundles its magician software, which is an inspection of over provisioning (the NAND set aside for the replacement of dead cells), secure erase, and diagnosis. 


First, the good news about the 870 QVO power and in the truth is will encounter the good news, all of the average user. Crystal disk mark 6 as measured by the drive as matching the speed of the competition. Most SATA SSDs already bump up against the bus 6gbit / s bandwidth-limitation—that is, the almost identical number of points.

870 qvo cdm6 IDG

crystal disk mark 6 does not reveal a large difference in the resultance between the drives displayed. Mainly because modern SSD features exceeds the bandwidth of the SATA bus.

In the real world-48GB-transfer-testing, the 2TB-870 QVO improved over its older 860 QVO siblings. However, the 860 QVO, we have tested was a 1 TB drive, the out-of-cache of the delivery in about 45 GB mark (I spoke to the 4.5 per cent-cache), dropped to 75MBps for the last leg of the race.

870 qvo 48 GB IDG

With 48 GB of data-sets, the 2 TB 870 QVO is a game for Seagate Barracuda SSD. The 1-TB version would probably be already in the cache before the end of this transfers and turned into a longer period of time in the 48GB single file for write. Shorter bars are better. 

The 1 TB 870 QVO would have no doubt about the same time, but it would probably have turned in a slightly higher score than the 860 QVO because of its faster write-rate, off-cache.

Where things was going to write a little bit sideways in the 450 GB, test we already have for a while as the drive capacity and the amount of cache available to it to explode put. As you can see below, the 870 QVO was faster than its predecessor, but still much slower than the other drives.

870 qvo 450 GB IDG

While the 870 QVO is twice as fast as the 860 QVO write a 450 GB file, it is much, much slower than the competing TLC drives. It is the drive for heavy workloads, is not.

you can see in the below capture exactly why the Samsung-QVO-drives are so much slower, the extra-large 450 GB file write. If the out-of-cache 870 QVO drops to 150 Mbit / s, decreases while the 860 QVO even further, to a paltry 75MBps.

samsung 870 qvo5 IDG

The 870 QVO s sustained write performance drops to around 150 Mbit / s, if it is executed out of cache. The huge bump at the beginning of the copy of the Windows-and DRAM-caching-and-effect.

While the 870 QVO is clearly not the drive to write many, large amounts of data, how often will you actually do? Once in a blue moon, if at all. The slowdown is painful, when it occurs, but you probably won’t see it in the larger capacities. The DRAM makes the drive very responsive, while the operating system is run, with its countless small file calls.


The Samsung 870 QVO, the capacity is large, and as great as his everyday performance. You are likely to be completely satisfied with the hard disk when you install it in your laptop or PC as a main drive. But 8TB? Now, come on. This is pretty sweet. Just be aware of the severe dropoff in the speed of the write is outside the cache.  

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Released on Tue, 30 Jun 2020 19:30:00 +0000

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