Lexar NM790 4TB SSD Review

We took note of the drive’s temperature during some of our benchmarking runs.

The only form of heatsink that the Lexar NM790 appears to have is a very thin foil built into the label covering the NAND and controller. We reckon it really does need some form of third-party heatsink or a motherboard cooling solution as it's not only a very fast drive, it does also gets very hot when pushed hard. We did our testing using the hefty built-in heatsink on our Gigabyte AORUS X670E Xtreme motherboard.

During our benchmarking runs, the hottest the drive got was 68° C during CrystalDiskMark 8 Sequential QD1-32 T1 Write test and the ATTO test, which is only 2°C away from the stated maximum operating temperature of 70°C, which is very close for comfort. But despite this, we didn't appear to see any throttle back during our tests. For the non-4 K tests the drive averaged 57°C while for the 4K-based tests, the average was 54.8°C.

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