WD Green SN350 256GB Gen3 NVMe SSD — 2400 MB/s Laptop Upgrade
The WD Green SN350 256GB NVMe SSD is a PCIe 3.0 x4 M.2 2280 internal drive built for everyday office work, content browsing and basic gaming. It delivers up to 2400 MB/s sequential read and 1500 MB/s sequential write, with a 80 TBW endurance rating and a 5-year manufacturer warranty. At N.N Laptops, Shop 66A, 3rd Floor, Hafeez Center, Gulberg III, Lahore, this drive costs Rs. 7,500 with a 15-day check warranty and free Lahore delivery.
Full specifications
| Brand & Model | WD Green SN350 |
|---|---|
| Capacity | 256GB |
| Interface | PCIe 3.0 x4 (Gen3 NVMe 1.4) |
| Form factor | M.2 2280 (single-sided where applicable) |
| Sequential read | up to 2400 MB/s |
| Sequential write | up to 1500 MB/s |
| Endurance (TBW) | 80 TBW |
| MTBF | 1.5 million hours |
| Warranty | 5-year manufacturer + 15-day N.N Laptops check |
Laptop compatibility
This drive is a standard M.2 2280 NVMe module, so it fits almost any laptop made in the last five years that has at least one M.2 NVMe slot. We've personally tested it in machines including Dell Latitude 5530, Latitude 5430, XPS 15 9520 and Precision 7550. If your laptop has only a SATA M.2 slot (no NVMe support), see our NVMe and SATA SSDs at /shop/ssd-hdd for the right drive.
How to confirm fit
Open your laptop service manual and look for the phrase "M.2 PCIe NVMe slot — 2280 length". If you see it, this SSD is a drop-in upgrade. If your manual lists "M.2 SATA" only, you need a SATA M.2 SSD instead — WhatsApp 0314 4000131 with your model and we'll confirm before you order.
Real-world performance
On a Gen3 platform the Green SN350 hits its rated speeds during sustained reads of large files — think Windows boot times under 9 seconds, a 50 GB game install in under three minutes, and 4K video scrubbing without dropped frames. Random 4K performance is equally strong, which is what you actually feel when booting Windows, launching apps, and switching between Chrome tabs. The drive uses dynamic SLC caching, so small writes (project files, documents, photos) feel instantaneous.
Thermals
Like any high-end NVMe drive, the Green SN350 can warm up under sustained heavy writes. In a slim laptop with no built-in M.2 heatsink we recommend running HWiNFO and watching temps the first week — most users see 55-70°C under normal load, which is well within Samsung/Kingston/WD spec. For gaming or constant 4K editing, a thin thermal pad between the drive and the bottom cover helps.
How to install in your laptop
Installation is straightforward and takes about 10 minutes:
- Power down the laptop and remove the bottom cover (usually 8-12 Phillips screws).
- Locate the M.2 2280 slot — it's a long narrow connector with a single mounting screw at the far end.
- Insert the SSD at a 30° angle, then press it flat and secure with the mounting screw.
- Reassemble and boot. Use Samsung Data Migration / Acronis True Image / Macrium Reflect to clone your existing drive, or install Windows fresh from a USB stick.
If you'd rather not open your laptop yourself, drop it at our shop and we'll install and clone for Rs. 1,500 (free for purchases above Rs. 20,000). We also stock SSD & HDD upgrades — see /shop/ssd-hdd.
Where to buy in Pakistan
The WD Green SN350 256GB NVMe SSD is in stock at N.N Laptops, Shop 66A, 3rd Floor, Hafeez Center, Gulberg III, Lahore for Rs. 7,500. We deliver free across Lahore, ship Cash on Delivery via TCS and Leopards across Pakistan (Punjab Rs. 450, rest of country Rs. 650), and accept bank transfer. Walk-in welcome 7 days a week. WhatsApp 0314 4000131 to confirm stock or ask compatibility questions before you order. Looking for matched RAM at the same time? Browse our storage upgrades at /shop/ssd-hdd.
Frequently asked questions
Can I install this in Acer Aspire 5?
If your laptop has an M.2 2280 NVMe slot (most 2018+ business and gaming laptops), yes. Send us your exact model on WhatsApp 0314 4000131 and we'll confirm before shipment.
Is this Gen3 or Gen4 NVMe?
This drive is Gen3 (PCIe 3.0 x4). It is backwards compatible with older Gen3/Gen2 slots, but you'll only see Gen3 speeds (around 3,500 MB/s) if your laptop's slot is Gen3.
What is TBW and does 80 TBW matter for me?
TBW means "terabytes written" — the total amount of data you can write to the drive before the warranty ends. 80 TBW is enough to write the full capacity of this drive every day for several years, which is far more than typical home or business use.
Will my Windows licence transfer if I clone the old drive?
Yes. Windows 10 and 11 licences are tied to your motherboard, not the SSD. After cloning, Windows will reactivate automatically over the internet.
Do you offer installation in Lahore?
Yes — Rs. 1,500 in-shop install with clone, free for purchases above Rs. 20,000. Walk into Shop 66A, Hafeez Center any time during business hours.
