Lexar NM620 512GB NVMe Gen3
512GB NVME GEN 3 SSD, 3300 MB/s read, DRAM-less (HMB).
Cheapest 512GB NVMe. Gen3 is fine for boot + main games. Budget build essential.
Official India stock. Full warranty through the brand's India service network, standard RMA if anything goes wrong.
Full specs
Motherboards with M.2 slots
Lexar NM620 512GB NVMe Gen3 Review India - Should You Buy Gen3 in 2025?
Lexar NM620 512GB - A Gen3 TLC Drive in a Gen4 World
Let me explain where the NM620 512GB sits in the market honestly, because the context matters.
When the NM620 launched, it was a solid budget Gen3 choice. Gen3 NVMe was the mainstream standard, and a TLC drive at this price was a good value. In 2025, budget Gen4 SSDs have arrived at similar prices - and Gen4 is backward compatible with Gen3 slots. The NM620's value proposition has narrowed significantly.
That said, there are still scenarios where it makes sense.
Specs - TLC NAND Is the Good News
The NM620 512GB uses TLC NAND - three bits per cell, the same NAND type used in premium drives like the Samsung 990 Pro and Crucial T500. No DRAM cache, but TLC NAND has better sustained write endurance than QLC, meaning it doesn't drop to native speeds as dramatically after the SLC cache fills.
Rated at 3,300 MB/s sequential read and 2,400 MB/s sequential write. Both are Gen3 ceilings - the PCIe 3.0 x4 interface caps out around 3,500 MB/s. For everyday gaming and OS use, Gen3 speeds feel identical to Gen4 in practice. Windows boots in the same time. Game load screens differ by fractions of a second.
Where Gen3 falls behind is sustained transfers - copying large files, installing multiple large games simultaneously. Gen4 budget drives (even QLC ones) have higher interface bandwidth to work with.
India Pricing and Availability
The NM620 512GB runs ₹2,500–4,000 at MDComputers and Amazon India. Lexar availability in India has improved in recent years - they're sold through Amazon India consistently and at some PrimeABGB and Vedant Computers locations.
At similar prices, the Kingston NV3 500GB (Gen4, QLC) edges it on sequential read. The NM620's advantage is TLC NAND - better sustained write behaviour after cache fills, compared to QLC. If both are same price, the NM620's TLC is a minor plus for workloads with sustained writes. For gaming and OS, neither is noticeably different.
The NM620 has a 5-year warranty - better than the old NV2's 3-year.
Who Should Buy This
Buy the NM620 512GB if it's meaningfully cheaper than a Gen4 alternative at your retailer, or if your board is Gen3-only and you want TLC NAND reliability at low cost.
Skip it if Gen4 options are within ₹500 - take the Gen4. Also skip if you're building on a modern board and care about having headroom for Gen4 speeds. And honestly, the capacity argument applies here too: 512GB is tight for a primary drive, same as the NV3 500GB. The 1TB NM790 is a significant step up.
Questions
No - for gaming, Gen3 and Gen4 are functionally identical. Game load times differ by under a second on modern drives. The difference matters only in sustained transfers and benchmarks, not in day-to-day gaming. If you're on a Gen3 board, you're not missing out on gaming performance.
If the price is the same: NM620 for TLC NAND (better sustained write behaviour), NV3 500GB for Gen4 interface and higher sequential read. For gaming only, it doesn't matter - pick whichever is cheaper. For mixed workloads with some sustained writes, the NM620's TLC is a small advantage.
Yes - Lexar products are sold and supported through Amazon India and authorised dealers. Warranty claims can be processed through the India service network. The 5-year warranty on the NM620 is solid for a budget drive.