ASUS G18 (2025) G814 (2025) Specifications
The ASUS G18 (2025) G814 (2025) is a gaming laptop designed for enthusiasts seeking strong performance. This guide covers RAM, SSD, charger compatibility, and upgrade paths for this model. For a comprehensive overview of all ASUS upgradeable models, visit the ASUS Laptop Upgrades hub.
| Component | Specification |
|---|---|
| Processor | Intel Core Ultra 9 290HX Plus |
| RAM | DDR5-5600, 2 SODIMM slots (upgradeable) |
| Max RAM | 64GB (2× 32GB) |
| Storage | M.2 NVMe PCIe 4.0, 2 slots |
| Charger | 280W USB-C |
| Ports | Thunderbolt 4, USB 3.2, HDMI 2.1 |
| Display | 18 inch 2.5K 240Hz |
| Weight | 3.0 kg (6.62 lbs) |
Memory Upgrade Path
The G18 (2025) G814 features 2 SO-DIMM slots for DDR5-5600 RAM, allowing upgrades up to 64GB. Both slots are user-accessible, and the upgrade process is straightforward.
Recommended DDR5 RAM Upgrades:
- Corsair Vengeance DDR5 SO-DIMM — Premium DDR5 laptop memory with excellent compatibility.
- Kingston Fury Impact DDR5 SO-DIMM — High-performance DDR5 with solid heat dissipation.
- Crucial DDR5 SO-DIMM — Budget-friendly DDR5 with proven stability.
Storage Expansion (M.2 NVMe)
The G18 (2025) G814 uses a standard M.2 NVMe SSD with a NVMe PCIe 4.0 interface. With 2 M.2 slots, you can run dual NVMe drives for expanded storage.
Recommended M.2 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 G18 (2025) G814 uses a 280W 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 ASUS charger.
Compatible USB-C PD Chargers:
- Anker 280W USB-C PD Charger — Compact GaN charger with multiple ports. Works with this and other USB-C devices.
- Ugreen USB-C PD Charger (280W+) — Affordable universal charger with fast charging and solid reviews.
- INIU USB-C PD Fast Charger — Budget option with reliable performance and portability.
Port & Docking Capabilities
Connectivity: Thunderbolt 4, USB 3.2, HDMI 2.1
The Thunderbolt 4 ports provide fast external storage and high-bandwidth peripherals. Consider a Thunderbolt dock like the CalDigit TS4 or Belkin Thunderbolt 4 Dock Pro for desktop expansion with multiple displays and storage.
Upgrade Difficulty & Tools Required
The G18 (2025) G814 has a difficulty rating of 2/5 for upgrades (5 = easiest). The upgrade process is difficult.
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 ASUS G18 (2025) G814?
Yes, the G18 (2025) G814 has 2 SO-DIMM slots for user-upgradeable DDR5 memory.
What is the maximum RAM for the G18 (2025) G814?
The G18 (2025) G814 supports up to 64GB of DDR5-5600 memory.
Can I add a second SSD to the G18 (2025) G814?
The G18 (2025) G814 has 2 M.2 slots. You can add a second NVMe SSD.
Can I use any USB-C charger with the G18 (2025) G814?
Yes, any USB-C Power Delivery charger rated for 280W or higher will work.
Is the G18 (2025) G814 easy to upgrade?
The G18 (2025) G814 has a difficulty rating of 2/5. Consider professional assistance for upgrades.
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 DDR5 SO-DIMM | Premium DDR5 laptop memory with excellent compatibility. | View on Amazon UK |
| Kingston Fury Impact DDR5 SO-DIMM | High-performance DDR5 with solid heat dissipation. | View on Amazon UK |
| Crucial DDR5 SO-DIMM | Budget-friendly DDR5 with proven stability. | 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 280W USB-C PD Charger | Compact GaN charger. Universal solution for USB-C laptops. | View on Amazon UK |
| Ugreen 280W USB-C PD Charger | Affordable universal USB-C charger with fast charging. | View on Amazon UK |
Prices and availability may vary. As an Amazon Associate, we earn from qualifying purchases.
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- ASUS Upgrade Guide
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