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MSI GP66 Leopard 11UH RAM & SSD Upgrade Guide (2026)

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MSI GP66 Leopard 11UH (2021) Specifications

The MSI GP66 Leopard 11UH (2021) 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 MSI upgradeable models, visit the MSI Laptop Upgrades hub.

ComponentSpecification
Processori7-11800H + RTX 3080
RAMDDR4, 2 slots (upgradeable)
Max RAM64GB
StorageM.2 2280 NVMe PCIe Gen3, 2 slots
Charger240W barrel
Ports1x USB-C, 2x USB 3.2, 1x HDMI
Display15.6″ FHD IPS 240Hz
Weight2.38 kg (5.25 lbs)

Memory Upgrade Path

SO-DIMM laptop RAM module with gold contacts
SO-DIMM laptop RAM module with gold contacts

The GP66 Leopard 11UH features 2 SO-DIMM slots for DDR4 RAM, allowing upgrades up to 64GB. Both slots are 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

M.2 NVMe SSD solid state drive
M.2 NVMe SSD solid state drive

The GP66 Leopard 11UH uses a standard M.2 2280 NVMe SSD with a NVMe PCIe Gen3 interface. With 2 M.2 slots, you can run dual NVMe drives for expanded storage.

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 GP66 Leopard 11UH uses a 240W barrel charger. This uses a proprietary barrel connector. Use the original charger or a compatible replacement rated for the same wattage.


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 GP66 Leopard 11UH 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 MSI GP66 Leopard 11UH?

Yes, the GP66 Leopard 11UH has 2 SO-DIMM slots for user-upgradeable DDR4 memory, supporting up to 64GB.

What is the maximum RAM for the GP66 Leopard 11UH?

The GP66 Leopard 11UH supports up to 64GB of DDR4 memory.

Can I add a second SSD to the GP66 Leopard 11UH?

The GP66 Leopard 11UH has 2 M.2 slots. You can add a second NVMe SSD.

What charger does the GP66 Leopard 11UH need?

The GP66 Leopard 11UH uses a 240W barrel charger.

Is the GP66 Leopard 11UH easy to upgrade?

The GP66 Leopard 11UH 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 where you can check current prices and availability.

ProductWhy We Recommend ItAmazon
Corsair Vengeance DDR4 SO-DIMMReliable DDR4 laptop memory with wide compatibility.View on Amazon
Kingston Fury Impact DDR4 SO-DIMMCompact high-performance DDR4 for laptops.View on Amazon
Crucial DDR4 SO-DIMMAffordable DDR4 with solid performance.View on Amazon
Samsung 990 Pro NVMe 2280Flagship NVMe SSD with exceptional speeds.View on Amazon
WD Black SN850X 2280High-performance NVMe with excellent sustained writes.View on Amazon
Crucial P5 Plus NVMe 2280Excellent value NVMe with strong real-world performance.View on Amazon

Prices and availability may vary. As an Amazon Associate, we earn from qualifying purchases.

Related Guides

Recommended Laptop Upgrades (RAM & SSD)

As an Amazon Associate we earn from qualifying purchases. Prices & availability shown on Amazon.

Crucial
Crucial 16GB Kit (2x8GB) DDR4 3200MHz SODIMM Laptop RAM
View on Amazon
Crucial
Crucial 16GB DDR4 3200MHz SODIMM Laptop RAM
View on Amazon
Crucial
Crucial 8GB DDR4 3200MHz SODIMM Laptop RAM
View on Amazon
Samsung
Samsung 990 PRO 2TB NVMe M.2 SSD (PCIe 4.0)
View on Amazon
Crucial
Crucial P310 2TB NVMe M.2 2280 SSD (PCIe Gen4)
View on Amazon
Crucial
Crucial P310 1TB NVMe M.2 2280 SSD (PCIe Gen4)
View on Amazon

How we verify this guide

We cross-reference compatibility figures against manufacturer specifications where available, official service manuals, and the standards that govern fit — memory type and speed (DDR4 / DDR5 / LPDDR5), maximum supported capacity and slot count, SSD form factor and interface (M.2 2280, NVMe PCIe vs SATA, keying), and charger wattage and connector (USB-C Power Delivery, GaN). We’re explicit about soldered or non-upgradeable parts, prioritise primary sources over retailer listings, and re-verify the data on a regular cycle. More on our method →

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