LG LG Gram 15 15Z90N (2020) Specifications
The LG LG Gram 15 15Z90N (2020) is an ultraportable laptop designed for productivity and portability. This guide covers RAM, SSD, charger compatibility, and upgrade paths for this model. For a comprehensive overview of all LG upgradeable models, visit the LG Laptop Upgrades hub.
| Component | Specification |
|---|---|
| Processor | i5-1035G7 / i7-1065G7 |
| RAM | DDR4, 1 slot (upgradeable) |
| Max RAM | 16GB |
| Storage | M.2 2280 NVMe PCIe Gen3, 1 slot |
| Charger | 65W USB-C |
| Ports | 1x USB-C, 2x USB 3.2, 1x HDMI |
| Display | 15.6″ FHD IPS |
| Weight | 1.12 kg (2.47 lbs) |
Memory Upgrade Path
The LG Gram 15 15Z90N features 1 SO-DIMM slot for DDR4 RAM, allowing upgrades up to 16GB. The slot is user-accessible, and the upgrade process is straightforward.
Recommended DDR4 RAM Upgrades:
- Corsair Vengeance DDR4 SO-DIMM — Reliable DDR4 laptop memory with wide compatibility.
- Kingston Fury Impact DDR4 SO-DIMM — Compact high-performance DDR4 for laptops.
- Crucial DDR4 SO-DIMM — Affordable DDR4 with solid performance.
Storage Expansion
The LG Gram 15 15Z90N uses a standard M.2 2280 NVMe SSD with a NVMe PCIe Gen3 interface. The single M.2 slot supports drives up to 2TB.
Recommended M.2 2280 SSDs:
- Samsung 990 Pro NVMe 2280 — Flagship NVMe SSD with exceptional speeds.
- WD Black SN850X 2280 — High-performance NVMe with excellent sustained writes.
- Crucial P5 Plus NVMe 2280 — Excellent value NVMe with strong real-world performance.
Power Delivery & Charging
The LG Gram 15 15Z90N uses a 65W USB-C charger. This is compatible with any USB-C PD charger of equal or higher wattage from brands like Anker, Ugreen, or the original LG charger.
Compatible USB-C PD Chargers:
- Anker 65W USB-C PD Charger — Compact GaN charger with multiple ports.
- Ugreen USB-C PD Charger (65W+) — Affordable universal charger with fast charging.
- INIU USB-C PD Fast Charger — Budget option with reliable performance.
Port & Docking Capabilities
Connectivity: 1x USB-C, 2x USB 3.2, 1x HDMI
A USB-C docking station like the Anker 577 USB-C Hub provides additional ports including HDMI, Ethernet, and USB-A.
Upgrade Difficulty & Tools Required
The LG Gram 15 15Z90N has a difficulty rating of 3/5 for upgrades (5 = easiest). The upgrade process is moderate — requires careful handling of bottom panel clips.
Tools needed:
- Phillips screwdriver (M2.5 or similar)
- Plastic spudger or pry tool (for bottom panel clips)
- ESD wrist strap (optional but recommended)
We recommend backing up your data and consulting the official service manual before opening the chassis.
Frequently Asked Questions
Can I upgrade the RAM in the LG LG Gram 15 15Z90N?
Yes, the LG Gram 15 15Z90N has 1 SO-DIMM slot for user-upgradeable DDR4 memory, supporting up to 16GB.
What is the maximum RAM for the LG Gram 15 15Z90N?
The LG Gram 15 15Z90N supports up to 16GB of DDR4 memory.
Can I add a second SSD to the LG Gram 15 15Z90N?
The LG Gram 15 15Z90N has 1 M.2 slot. You can replace the existing SSD with a larger drive.
Can I use any USB-C charger with the LG Gram 15 15Z90N?
Yes, any USB-C Power Delivery charger rated for 65W or higher will work with the LG Gram 15 15Z90N.
Is the LG Gram 15 15Z90N easy to upgrade?
The LG Gram 15 15Z90N has a difficulty rating of 3/5. Some care needed with bottom panel clips.
Recommended Products
These are the products we recommend based on this guide. All links go to Amazon UK where you can check current prices and availability.
| Product | Why We Recommend It | Amazon UK |
|---|---|---|
| Corsair Vengeance DDR4 SO-DIMM | Reliable DDR4 laptop memory with wide compatibility. | View on Amazon UK |
| Kingston Fury Impact DDR4 SO-DIMM | Compact high-performance DDR4 for laptops. | View on Amazon UK |
| Crucial DDR4 SO-DIMM | Affordable DDR4 with solid performance. | View on Amazon UK |
| Samsung 990 Pro NVMe 2280 | Flagship NVMe SSD with exceptional speeds. | View on Amazon UK |
| WD Black SN850X 2280 | High-performance NVMe with excellent sustained writes. | View on Amazon UK |
| Crucial P5 Plus NVMe 2280 | Excellent value NVMe with strong real-world performance. | View on Amazon UK |
| Anker 65W USB-C PD Charger | Compact GaN charger for USB-C laptops. | View on Amazon UK |
| Ugreen 65W USB-C PD Charger | Affordable universal USB-C charger. | View on Amazon UK |
Prices and availability may vary. As an Amazon Associate, we earn from qualifying purchases.
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