# Lexar NQ790 4TB SSD tech specs (2026)

How fast is the Lexar NQ790 4TB and more details read below on this site.

Quick answer: NQ790 (4TB) produced by Lexar may work on PCIe Gen4 that is undoubtedly faster than PCIe 3. The sequential write speed is 6500 Mbps, that is faster than has most of rivals. The Lexar NQ790 has endurance 600 TBW, that is not very much in comparison with closest competitors. After evaluating all the facts, we highly recommend to have Lexar NQ790 4TB for your PC.

## Specifications

| Specification | Value |
| --- | --- |
| Capacity | 4 TB |
| Interface | M.2 4.0 x 4 |
| Controller | Maxiotech MAP-1602A |
| Memory type | YMTC 128-LTLC |
| DRAM cache | No |
| Sequential read | 7400 MB/s |
| Sequential write | 6500 MB/s |
| Random read IOPS | 7400000 |
| Random write IOPS | 6500000 |
| Endurance | 600 TBW |
| MTBF | 2000000 |
| Warranty | 1 years |

## Performance

Drive use PCIe M.2 4.0 x 4 bus with write speeds equals to 6500 Mbps, and sequential read speeds 7400 MB/s. It also has input/output performance 7400000 on reading and 6500000 on writing operations per second.

## Endurance, TBW & Warranty

Lexar give 1 years of warranty that limited by endurance 600 TBW. As well it has 2000000 million hours mean time between failure.

## Pros and Cons

**Pros:**

- Excellent writing speed
- PCIe 4.0
- Capacity
**Cons:**

- Writing speed


## Verdict

NQ790 (4TB) produced by Lexar may work on PCIe Gen4 that is undoubtedly faster than PCIe 3. The  sequential write speed is 6500 Mbps, that is faster than has most of rivals. The Lexar NQ790 has endurance 600 TBW, that is not very much in comparison with closest competitors. After evaluating all the facts, we highly recommend to have Lexar NQ790 4TB for your PC.

## Frequently Asked Questions

### Is Lexar NQ790 DRAMless?

The Lexar NQ790 has No. Dynamic Random-Access Memory makes drive work faster, but more expensive. 

### Do I need a heatsink for my Lexar NQ790 4TB?

The NQ790 4TB due to the high density of memory chips you need to install of additional heat sink. This will lower temperature of the controller and memory. Some motherboards or laptops designed with additional cooling above or below the SSD for better productivity during heavy loads.

### Is Lexar NQ790 good for gaming?

The Lexar NQ790 has maximum write speed 6500 Mb/s, maximum read speed 7400 Mbps. It works on Maxiotech MAP-1602A controller and M.2 4.0 x 4 interface standard. The NAND flash memory type is YMTC 128-LTLC.

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Last updated: 2026-08-27. Source: https://ssdrive.net/lexar-nq790-4-tb