Samsung SSD 870 QVO Review: Ultra-High Capacity V-NAND Jam-Packed For SATA Storage
We’ve got a couple of Samsung SSD 870 QVO drives on hand, in 1TB and 2TB capacities. These drives, however, will be offered in capacities as high as 8 Terabytes, which would make for a nice speedy repository for that Steam folder of yours that’s full of games or that massive of collection of RAW images you’ll process someday...
The Samsung SSD 870 QVO series of drives are built around Samsung’s 9x-layer, 4-bit per cell QLC (quad level cell) V-NAND. That NAND is paired to a proprietary Samsung MKX controller and some LPDDR4 DRAM cache. Details are scarce on the controller, but the amount of DRAM installed on each drive is listed right in their specs – there is essentially 1GB of DRAM per 1TB of drive capacity.
Three pentalobe screws secure the enclosures – one screw is visible and two reside under the decal. Disengage those screws and the enclosures open right up to reveal the PCBs inside.
Write Performance, 1TB Drive (Left), 2TB Drive (Right)
A technology incorporated into the SSD 870 QVO recycled from older drives is Intelligent TurboWrite, which uses a portion of the NAND like a variable SLC write buffer. This allows the QLC NAND to perform more like a MLC drive for writes, giving write performance an overall boost. With the 1TB drive, we saw performance drop off at the 550GB mark, but the 2TB drive’s variable buffer is large enough and flushes data fast enough to maintain peak performance across the entire capacity. We should also mention that both drives support Samsung latest data migration tools and Magician SSD utility as well.
Samsung SSD 870 EVO Benchmarks
Under each test condition, the SSDs tested here were installed as secondary volumes in our testbed, with a separate drive used for the OS and benchmark installations. Out testbed's motherboard was updated with the latest BIOS available at the time of publication. The SSDs were secure erased prior to testing (when applicable), and left blank without partitions for some tests, while others required them to be partitioned and formatted, as is the case with the ATTO, PCMark, and CrystalDiskMark tests. Windows firewall, automatic updates, and screen savers were all disabled before testing and Windows 10 Quiet Hours / Focus Assist was enabled.
Video Card -
|AMD Threadripper 3990X
MSI TRX40 Creator
GeForce RTX 2080 Ti
32GB G.SKILL DDR4-3200
Integrated on board
Corsair MP600 (OS Drive)
Samsung SSD 860 Pro (2TB)
Samsung SSD 870 QVO (1TB, 2TB)
Toshiba OCZ VX500 (1TB)
Chipset Drivers -
|Windows 10 Pro x64 (1909)
HD Tune v5.75
CrystalDiskMark v7 x64
PCMark 10 Quick Storage Bench
ATTO is another "quick and dirty" type of disk benchmark that measures transfer speeds across a specific volume length. It measures raw transfer rates for both reads and writes and graphs them out in an easily interpreted chart. We chose .5KB through 64MB transfer sizes and a queue depth of 6 over a total max volume length of 256MB. ATTO's workloads are sequential in nature and measure raw bandwidth, rather than I/O response time, access latency, etc.
In ATTO's read and write bandwidth tests, all of the drives are tightly grouped once again, with the Samsung drives taking a marginal lead with the smallest block sizes, particularly in the read test.
There's not much separating these SSDs in terms of IOs either, though technically the Samsung 870 QVOs sandwich the 860 Pro at the smallest block sizes, before things level out.