Home / Tech News / Featured Tech Reviews / Lexar NM790 with Heatsink 4TB SSD Review

Lexar NM790 with Heatsink 4TB SSD Review

Rating: 8.5.

When we looked at the standard Lexar NM790, the temperatures the drive reached while benchmarking were a little concerning at times. Now we have the heatsink-equipped version of the drive to see if it makes a difference, testing the 4TB model that retails for £260 here in the UK.

Unlike the standard NM790 which comes in four capacities, the heatsink-equipped drive comes in just three; 1TB, 2TB and the flagship 4TB model, the 512GB drive gets dropped from the heatsink-equipped lineup.

Lexar's MN790 uses a 4-channel DRAM-less design controller from Maxiotech, the MAP1602A in combination with 232-Layer 3D TLC NAND. To improve performance the controller uses a 2,400MT/s NAND interface. Instead of using DRAM, the drive uses Host Memory Buffer (HMB) 3.0 technology (the drive uses a small portion of the system memory in place of a dedicated DRAM IC) along with Dynamic SLC caching.

Lexar quotes Sequential performance across the range as up to 7,400MB/s and up to 6,500MB/s for read and writes respectively. Although Lexar hasn't disclosed any random performance figures we have seen, the controller supports up to 1,000K IOPS for both read and writes.

The endurance of the 4TB drive is quoted as 3,000TBW and Lexar backs the drive with a 5-year warranty,

Physical Specifications:

  • Usable Capacities: 4TB.
  • NAND Components: 232-Layer 3D TLC.
  • NAND Controller: Maxiotech MAP1602A 4-channel.
  • Cache: none, Host Memory Buffer (HMB) 3.0.
  • Interface: PCIe Gen4 x4, NMVe 2.0.
  • Form Factor: M.2, 2280.
  • Dimensions: 80 x 24 x 9.7mm.
  • Drive Weight: 48.6g

Firmware Version: 12237.

Become a Patron!

Check Also

MSI RTX 5070 Ti Ventus 3X OC Review

The RTX 5070 Ti is here - let's find out just how much performance is on offer

We've noticed that you are using an ad blocker.

Thank you for visiting KitGuru. Our news and reviews teams work hard to bring you the latest stories and finest, in-depth analysis.

We want to be as informative as possible – and to help our readers make the best buying decisions. The mechanism we use to run our business and pay some of the best journalists in the world, is advertising.

If you want to support KitGuru, then please add www.kitguru.net to your ad blocking whitelist or disable your adblocking software. It really makes a difference and allows us to continue creating the kind of content you really want to read.

It is important you know that we don’t run pop ups, pop unders, audio ads, code tracking ads or anything else that would interfere with the KitGuru experience. Adblockers can actually block some of our free content, such as galleries!