Inside MSI Stealth GS66 (12Ux) – disassembly and upgrade options

It’s great that MSI diverged away from the horrendous concept of the flipped motherboard they used a couple of years ago. Now, you not only have a good amount of upgrade options, but it is really easy to access them.

Check out all MSI Stealth GS66 (12Ux) prices and configurations in our Specs System or read more in our In-Depth review.

1. Remove the bottom plate

There are 9 Phillips-head screws holding the bottom panel of this laptop in place. After you undo them, pry the panel with a plastic tool and lift it away from the chassis.

2. Battery

Inside, you’ll find a behemoth 99.9Wh battery pack. To remove it from the laptop, you need to undo 3 Phillips-head screws. Then, unplug the battery connector, and lift the battery.

3. Memory and storage

You get two SODIMM slots, hidden beneath a metal case. They support up to 64GB of DDR5 memory in total. As for the storage, there are two M.2 PCIe x4 slots. They don’t support RAID configurations, but on the bright side, they fit Gen 4 drives.

4. Cooling system

There are a total of six heat pipes cooling the CPU and the GPU. A seventh one is managing the heat of the graphics memory, while three fans and four heat sinks dissipate the heat away from the device.

Check out all MSI Stealth GS66 (12Ux) prices and configurations in our Specs System or read more in our In-Depth review.

MSI Stealth GS66 (12Ux) in-depth review

What is a world without thin and light gaming notebooks? For sure, it would be a boring place. Usually, the convenience of being able to carry your laptop around, without risking a shoulder sprain comes at a cost. These laptops run hotter and are paired with low-TGP graphics cards.The MSI Stealth GS66 is one such laptop that aims to break the stigma. In fact, the Stealth series was one of the first to preach the thin and light gaming philosophy. Through the years, it has battled the Triton 500's and the Razers of the world with mixed success. Today, we hope that the balance will change in[...]


  • 2x M.2 PCIe Gen 4 slots, 2x RAM SODIMM slots in dual channel
  • Covers 99% of the DCI-P3 color gamut and has accurate color representation with our Gaming and Web design profile (240Hz 1440p panel)
  • Snappy panels with quick response times
  • Good cooling
  • You can connect up to four additional monitors
  • Thunderbolt 4 + IR face recognition + fingerprint scanner
  • Wi-Fi 6E + 2.5G LAN port
  • Has a MUX switch


  • Lacks an SD card reader
  • Subpar battery life
  • Its keyboard is not ideal for gaming
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