At present, we’re wanting on the Lexar NM790 4TB SSD. That is the third Lexar drive I’ve reviewed, and I used to be beforehand impressed by the NM800 Professional. The NM790 is an fascinating drive in that it’s billed as a high-performance drive that’s DRAM-less, which is an uncommon mixture that could be a declare that we should take a look at.
Lexar NM790 4TB NVMe SSD
The Lexar NM790 4TB is available in a single-sided M.2 2280 (80mm) kind issue. This drive can also be accessible with a heatsink included, however my assessment pattern is just the naked drive.
The NM790 sports activities a Mapio MAP1602 controller, which I lately noticed on the Fanxiang S880. Much like the S880, the NAND can also be YMTC 232-layer TLC, and as talked about within the introduction, there isn’t any DRAM cache.
The rear of the NM790 has nothing however a product label.
Lexar NM790 SSD Specs
The spec sheet says the Lexar NM790 is accessible between 512GB and 4TB capacities.
Now we have the 4TB mannequin available, which lists high-end sequential switch pace specs for a PCIe Gen 4 drive at 7400 MB/s learn and 6500 MB/s write. That is basically as quick as a Gen 4 drive can get, give or take 100 MB/s or so. It is usually a fairly daring declare for a DRAM-less drive, particularly on the write pace. The endurance for this drive is sweet, rated at 3000 TBW. My customary for good endurance is round 600 TBW per 1 TB of drive capability, and the NM790 is available in at or above that time for all capability ranges. Lexar additionally features a 5-year guarantee, which is the trade customary for a top quality drive at this level.
CrystalDiskInfo can provide us some fundamental details about the SSD and confirms we’re working at PCIe Gen4 x4 speeds utilizing NVMe 2.0.
Take a look at System Configuration
We’re utilizing the next configuration for this take a look at:
- Motherboard: MSI MAG X670E Tomahawk
- CPU: AMD Ryzen 9 7900X (12C/24T)
- RAM: 2x 16GB DDR5-6000 UDIMMs
Our testing makes use of the Lexar NM790 4TB because the boot drive for the system, put in within the M.2_1 slot on the motherboard. This slot helps as much as PCIe Gen 5 x4. The drive is crammed to 85% capability with information, after which some is deleted, leaving round 60% used area on the quantity.
Subsequent, we’re going to get into our efficiency testing.
