Kingston NV2 4TB vs Western Digital WD Red SN700 4TB
Kingston NV2 4TB and Western Digital WD Red SN700 4TB each win something the other does not — the choice is which of those you want.
| Specification | KingstonNV2 4TB | Western DigitalWD Red SN700 4TB |
|---|---|---|
| Capacity (GB) | 4000 | 4000 |
| Sequential read (MB/s) | 3500better | 3400 |
| Sequential write (MB/s) | 2100 | 3100better |
| Current best price | $928.90betterat Newegg Canada · captured 2026-09-09 | $2,741.80at Amazon.ca · captured 2026-09-13 |
| Price per TB | $232.23better | $685.45 |
| DRAM cache | No | Yes |
| NAND type | tlc | tlc |
How these two compare
Sequential throughput
Kingston NV2 4TB is rated 3500 MB/s read and 2100 MB/s write; Western Digital WD Red SN700 4TB, 3400 MB/s read and 3100 MB/s write. These are peak sequential rates over PCIe — the speed you would see copying one large file. For boot, app launches and everyday feel, random access matters more than this headline figure.
Price
Kingston NV2 4TB lists at $928.90, or $232.23 per TB; Western Digital WD Red SN700 4TB at $2,741.80, or $685.45 per TB.
DRAM cache
Kingston NV2 4TB is DRAM-less; Western Digital WD Red SN700 4TB carries a DRAM cache. A DRAM cache holds the drive's mapping table — the index of where each block physically sits — so the controller places and finds data without an extra flash lookup. A DRAM-less drive borrows a little system memory (HMB) or a slice of its own flash instead, and is likelier to slow once a long run of random writes outlasts its fast cache.
NAND
NAND: Kingston NV2 4TB uses TLC and Western Digital WD Red SN700 4TB uses TLC. The tier is bits per cell — SLC, MLC, TLC and QLC from one to four — trading density against endurance and sustained-write speed: QLC is cheapest per gigabyte, TLC the mainstream balance, and the denser the cell the sooner sustained writes taper.
Which to buy
There is no outright answer — each takes something the other gives up. Decide which of those advantages matters for your build; the comparison above lays out both sides.
Common questions about this pair
- Which is faster, Kingston NV2 4TB or Western Digital WD Red SN700 4TB?
- Kingston NV2 4TB is rated 3500 MB/s read and 2100 MB/s write; Western Digital WD Red SN700 4TB, 3400 MB/s read and 3100 MB/s write. These are peak sequential rates over PCIe — the speed you would see copying one large file. For boot, app launches and everyday feel, random access matters more than this headline figure.
- Which costs less per terabyte, Kingston NV2 4TB or Western Digital WD Red SN700 4TB?
- Kingston NV2 4TB lists at $928.90, or $232.23 per TB; Western Digital WD Red SN700 4TB at $2,741.80, or $685.45 per TB.
- Should you buy Kingston NV2 4TB or Western Digital WD Red SN700 4TB?
- There is no outright answer — each takes something the other gives up. Decide which of those advantages matters for your build; the comparison above lays out both sides.