What’s the difference between the Lexar NM610 and NM620?

The NM620 is a new solid state drive released by Lexar. So, how does it compare to the similar NM610?

You can find out in this comparison guide between the two Lexar SSDs.

Quick Summary

When compared to the Lexar NM610 M.2 2280 NVMe Solid State Drive, the Lexar NM620 M.2 2280 NVMe Solid State Drive is faster at maximum sequential reading, maximum sequential writing and maximum random writing.

The 250 GB NM610 is faster than the 256 GB NM620 at maximum random reading. With that said, the 512 GB and 1 TB NM620 SSDs faster than the 500 GB and 1 TB NM610 SSDs at maximum random reads.

The Lexar NM610 has a slightly higher DWPD than the Lexar NM620. On the other hand, the NM620 has a longer warranty coverage period when compared to the NM610.

NM610 vs. NM620 Comparison Chart

You can also find Seeking Tech’s comparison table for the two Lexar storage drives below.

Capacity Options

The Lexar NM610 is available in three capacity options as you can choose between 250 GB, 500 GB and 1 TB.

The Lexar NM620 is available in three slightly bigger capacities as you can pick between 256 GB, 512 GB and 1 TB.

Model Numbers

You can take a look at the model numbers for each capacity of both Lexar solid state drives below:

• 250 GB NM610: LNM610-250RBNA, LNM610-250RB or LNM610-250RBJP
• 500 GB NM610: LNM610-500RBNA, LNM610-500RB or LNM610-500RBJP
• 1 TB NM610: LNM610-1TRBNA, LNM610-1TRB or LNM610-1TRBJP

• 256 GB NM620: LNM620X256G-RNNNU or LNM620X256G-RNNNC
• 512 GB NM620: LNM620X512G-RNNNU or LNM620X512G-RNNNC
• 1 TB NM620: LNM620X001T-RNNNU or LNM620X001T-RNNNC

Weight

The Lexar NM610 and Lexar NM620 have the same weight at 9 grams.

Dimensions

The two solid state drives in this versus showdown also have the same dimensions with a measurement of 80 mm x 22 mm x 2.25 mm (or 3.15” x 0.87” x 0.09”).

Form Factor

The NM610 and NM620 also use the same M.2 2280 form factor.

Interface

Furthermore, both of these Lexar storage drives utilize the PCIe Gen3 x4 interface.

NAND Type

As for the memory components, the two SSDs are equipped with 3D NAND.

Maximum Sequential Read Speed

The Lexar NM620 is quite a bit faster when compared to the Lexar NM610 at maximum sequential reading.

When you compare the same or similar capacities, the 256 GB NM620 is 1000 MB per second faster, or 50% faster, than the 250 GB NM610.

The 512 GB and 1 TB versions of the NM620 are 1200 MB per second faster, or 57.14% faster, than the 500 GB and 1 TB versions of the NM610.

You can check out the sequential read speed specifications below:

• 250 GB NM610: Up to 2000 MB per second
• 500 GB NM610: Up to 2100 MB per second
• 1 TB NM610: Up to 2100 MB per second

• 256 GB NM620: Up to 3000 MB per second
• 512 GB NM620: Up to 3300 MB per second
• 1 TB NM620: Up to 3300 MB per second

Maximum Sequential Write Speed

The Lexar NM620 also comes out on top at maximum sequential writing.

The 256 GB NM620 is 100 MB per second faster, or 8.33% faster, than the 250 GB NM610.

Furthermore, the 512 GB NM620 is 800 MB per second faster, or 50% faster, than the 500 GB NM610.

Lastly, the 1 TB NM620 is 1400 MB per second faster, or 87.50% faster, than the 1 TB NM610.

You can find the sequential write speed specs below:

• 250 GB NM610: Up to 1200 MB per second
• 500 GB NM610: Up to 1600 MB per second
• 1 TB NM610: Up to 1600 MB per second

• 256 GB NM620: Up to 1300 MB per second
• 512 GB NM620: Up to 2400 MB per second
• 1 TB NM620: Up to 3000 MB per second

Maximum Random Read Speed

As for maximum random reading, the 250 GB NM610 is actually 18K IOPS faster, or 19.57% faster, than the 256 GB NM620.

On the other hand, the 512 GB NM620 is 12K IOPS faster, or 6.38% faster than the 500 GB NM610.

The 1 TB NM620 is also 112K IOPS faster, 59.57% faster, than the 1 TB NM620.

You can check out the maximum random read speeds below:

• 250 GB NM610: Up to 110K IOPS
• 500 GB NM610: Up to 188K IOPS
• 1 TB NM610: Up to 188K IOPS

• 256 GB NM620: Up to 92K IOPS
• 512 GB NM620: Up to 200K IOPS
• 1 TB NM620: Up to 300K IOPS

Maximum Random Write Speed

The Lexar NM620 has faster maximum random writing speeds when compared to the Lexar NM610.

The 256 GB NM620 is 89K IOPS faster, or 58.94% faster, than the 250 GB NM610.

The 512 GB and 1 TB NM620 solid state drives are also 100K IOPS faster, or 64.11% faster, than the 500 GB and 1 TB NM610 solid state drives.

You can check out the random write speeds below:

• 250 GB NM610: Up to 151K IOPS
• 500 GB NM610: Up to 156K IOPS
• 1 TB NM610: Up to 156K IOPS

• 256 GB NM620: Up to 240K IOPS
• 512 GB NM620: Up to 256K IOPS
• 1 TB NM620: Up to 256K IOPS

TBW

TBW, or Terabytes Written, measures the endurance of a Lexar solid state drive in terms of how much data you can write on it during its expected lifespan.

When you compare the same or similar capacities, the NM610 and NM620 are the same.

You can find the TBW specifications below:

• 250 GB NM610: 125 TBW
• 500 GB NM610: 250 TBW
• 1 TB NM610: 500 TBW

• 256 GB NM620: 125 TBW
• 512 GB NM620: 250 TBW
• 1 TB NM620: 500 TBW

DWPD

DWPD, or Drive Writes Per Day, measures the amount of data that can be written on a daily basis over its expected lifespan.

In this case, the NM610 has a slightly higher DWPD when compared to the NM620.

You can take a look at the DWPD stats below:

• NM610: 0.46
• NM620: 0.44

MTBF

MTBF, or Mean Time Between Failures, estimates how long a Lexar solid state drive is expected to remain reliable.

The NM610 and NM620 have the same MTBF at 1,500,000 hours.

Operating Temperature

The two Lexar storage drives in this comparison have the same operating temperature range of 0° C to 70° C (or 32°F to 158°F).

Storage Temperature

Both the NM610 and NM620 also have the same storage temperature range at -40° C to 85° C (or -40°F to 185°F).

Shock Resistance

The two storage drive have the same shock resistance specs at 1500G, duration 0.5ms, Half Sine Wave.

Vibration Resistance

The devices also have identical vibration resistance stats at 10 Hz to 2000 Hz, 1.5 mm, 20 G, 1 Oct/min, 30 min/axis(X,Y,Z).

Warranty

The Lexar NM610 M.2 2280 NVMe Solid State Drive comes with a 3-year limited warranty while the Lexar NM620 M.2 2280 NVMe Solid State Drive comes with a 5-year limited warranty.

Resources:

• https://www.lexar.com/portfolio_page/ssd-nm610
• https://www.lexar.com/portfolio_page/ssd-nm620