The WD Black SN770 2TB Gen4 NVMe SSD – the fastest M.2 drive for your laptop in 2026
If you are looking to upgrade your laptop's storage to PCIe Gen4 speeds, the WD Black SN770 2TB is the perfect balance of price and performance. With read speeds up to 5150 MB/s and write speeds up to 4900 MB/s, this drive cuts load times dramatically. At N.N Laptops, Shop 66A, 3rd Floor, Hafeez Center, Gulberg III, Lahore, we stock the WD Black SN770 2TB for Rs. 91,999 for new factory-sealed units. This drive is tested and quality-checked before dispatch and comes with a 30-day replacement warranty plus the manufacturer's 5-year warranty. WhatsApp 0314 4000131 to check stock or ask any questions.
WD Black SN770 2TB Gen4 NVMe SSD — 5150 MB/s Laptop Upgrade
The WD Black SN770 2TB NVMe SSD is a PCIe 4.0 x4 M.2 2280 internal drive built for fast game loading, 4K video editing and heavy multitasking. It delivers up to 5150 MB/s sequential read and 4900 MB/s sequential write, with a 1200 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. 42,500 for pre-owned units or Rs. 91,999 for brand new. We also offer a 30-day check warranty on pre-owned stock and 30-day replacement on new stock. Lahore delivery on all orders.
Full specifications
| Brand & Model | WD Black SN770 |
|---|---|
| Capacity | 2TB |
| Interface | PCIe 4.0 x4 (Gen4 NVMe 1.4) |
| Form factor | M.2 2280 (single-sided where applicable) |
| Sequential read | up to 5150 MB/s |
| Sequential write | up to 4900 MB/s |
| Endurance (TBW) | 1200 TBW |
| MTBF | 1.5 million hours |
| Warranty | 5-year manufacturer + 30-day (pre-owned) or 30-day (new) 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 HP EliteBook 840 G5, EliteBook 840 G6, ProBook 450 G7 and Omen 15. 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 Gen4 platform the Black SN770 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.
How does it stack up against other Gen4 SSDs?
The SN770 is WD's mid-range gaming/performance drive. It lacks a DRAM cache but uses Host Memory Buffer (HMB) to achieve near-flag performance. In real-world tests, it matches the Samsung 980 Pro in game loading and boot times, though it falls slightly behind in sustained writes. For most users, the difference is negligible. If you need maximum write endurance, consider the SN850X, but the SN770 offers excellent value at Rs. 91,999 for 2TB new. For pre-owned, it's even more affordable at Rs. 42,500.
Thermals
Like any high-end NVMe drive, the Black SN770 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.
Who should buy the WD Black SN770?
This drive is ideal for gamers who want faster level loading, video editors working with 4K or 8K footage, and professionals running virtual machines or large databases. It's also a great boot drive for anyone still on a SATA SSD. With 2TB capacity, you can store dozens of modern games or a large media library. At N.N Laptops, we recommend this drive to customers upgrading from HDDs or older SSDs – the difference is night and day.
Where to buy in Pakistan
The WD Black SN770 2TB NVMe SSD is in stock at our Hafeez Center counter on the 3rd floor (Shop 66A) for Rs. 42,500 (pre-owned) or Rs. 91,999 (new). We deliver free across Lahore via our own riders, and across Pakistan via TCS/Leopards to Karachi, Islamabad, Rawalpindi, Faisalabad, Multan, Peshawar, Sialkot and all major cities (shipping via TCS / Leopards nationwide. 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 matching RAM upgrades at /shop/ram.
Warranty and support
Every WD Black SN770 sold by N.N Laptops comes with full manufacturer warranty plus our in-house guarantee. For pre-owned units, we offer a 30-day check warranty – test it thoroughly and if there's any issue, bring it back. For new units, we offer a 30-day replacement warranty against manufacturing defects. We also provide free installation guidance over WhatsApp and in-shop support. We've been selling SSDs at Hafeez Center for years – you can trust us for genuine products and honest advice.
Frequently asked questions
Does this work in Asus ROG Strix G15?
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 Gen4 (PCIe 4.0 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 1200 TBW matter for me?
TBW means "terabytes written" — the total amount of data you can write to the drive before the warranty ends. 1200 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.
What about nationwide delivery?
We ship via TCS and Leopards to all over Pakistan. Send us your address on WhatsApp 0314 4000131 and we'll quote exact shipping. Payment is settled directly with us – we'll guide you through the process.
