MSI GS66 Stealth 11Ux – Top 5 Pros and Cons

The GS66 Stealth series from MSI is a real gaming notebook that cares about its appearance and looks. It is wonderful to see how much you can slim down a laptop while keeping its performance intact and the portable gaming niche will go bigger and bigger, as hardware shrinks in size, but not in performance. The laptop that we will take a look at today comes with the latest Intel CPUs and NVIDIA GPUs, along with several IPS displays with up to 4K UHD resolution and a 360Hz refresh rate.

Today we are presenting you with LaptopMedia’s Top 5 picks about the MSI GS66 Stealth 11Ux.

MSI GS66 Stealth 11Ux: Full Specs / In-depth Review


3 reasons to BUY the MSI GS66 Stealth 11Ux

1. Design and build quality

With a metal lid and chassis, the laptop looks really good, especially with the boxy shape, which makes it appear much more grown-up. The laptop has absolutely zero branding on the outside, with only an MSI wordmark on the bottom bezel. You get some RGB, which when you either turn off or switch to a singular color, will make the laptop the ultimate sleeper device.

The lid opens easily with one hand, revealing thin bezels, except the bottom one. The keyboard and touchpad are of good quality, but the thin profile of the laptop keeps the key travel average, but nonetheless offers clicky feedback. In terms of dimensions, the GS66 Stealth measures 2.10 kg and 19.8 mm, for weight and height, respectively.


2. Upgradeability

The upgradeability here is on point, bringing two SODIMM RAM slots, for up to 64GB of DDR4-3200MHz RAM and two M.2 slots with RAID support. One of them also supports PCIe Gen 4 drives.

Here is our detailed teardown video, which shows how to access both the RAM and SSD slots.


3. I/O and features

The I/O is densely populated bringing three USB Type-A 3.2 (Gen. 2) ports, two USB Type-C 3.2 (Gen. 2) ports, one of which also has Thunderbolt 4 support. You also have an HDMI 2.1 port, an Ethernet port, and a 3.5 mm audio jack.


2 reasons NOT to buy the MSI GS66 Stealth 11Ux

1. Battery life

With a 99.9Wh unit, we certainly expected the battery life to take a turn for the better. What we got, in reality, was 2 hours and 13 minutes of Web browsing and video playback. Now, we conduct the battery tests with Windows Better performance setting turned on, screen brightness adjusted to 120 nits, and all other programs turned off except for the one we are testing the notebook with.


2. Cooling

The cooling looks great on paper, with a total of six heat pipes, four heat sinks, and three fans. Three heat pipes are dedicated to the CPU while the other three are for the GPU. The heat sinks are for connecting the pipes to the fans, while also being on top of the VRMs and memory chips.


Max CPU load

In this test we use 100% on the CPU cores, monitoring their frequencies and chip temperature. The first column shows a computer’s reaction to a short load (2-10 seconds), the second column simulates a serious task (between 15 and 30 seconds), and the third column is a good indicator of how good the laptop is for long loads such as video rendering.

Average core frequency (base frequency + X); CPU temp.

Intel Core i7-11800H (45W TDP) 0:02 – 0:10 sec 0:15 – 0:30 sec 10:00 – 15:00 min Max Fans
MSI GS66 Stealth 11UH 3.50 GHz (B+52%) @ 95°C @ 84W 3.09 GHz (B+34%) @ 95°C @ 68W 2.59 GHz (B+13%) @ 91°C @ 50W
Dell G15 5511 3.67 GHz (B+60%) @ 97°C @ 100W 3.54 GHz (B+54%) @ 98°C @ 91W 3.43 GHz (B+49%) @ 93°C @ 79W
Acer Predator Helios 300 (PH317-55) 3.67 GHz (B+60%) @ 90°C @ 103W 3.66 GHz (B+59%) @ 99°C @ 103W 3.40 GHz (B+48%) @ 99°C @ 84W
ASUS ROG Zephyrus M16 GU603 3.87 GHz (B+68%) @ 95°C @ 106W 3.90 GHz (B+70%) @ 95°C @ 109W 3.58 GHz (B+56%) @ 86°C @ 80W
MSI Creator Z16 (A11Ux) 3.12 GHz (B+36%) @ 96°C @ 68W 3.03 GHz (B+32%) @ 95°C @ 62W 2.76 GHz (B+20%) @ 95°C @ 53W 2.90 GHz (B+26%) @ 95°C @ 59W
MSI GE76 Raider (2021) 3.22 GHz (B+40%) @ 95°C @ 67W 3.11 GHz (B+35%) @ 94°C @ 62W 3.14 GHz (B+37%) @ 94°C @ 61W 3.26 GHz (B+42%) @ 94°C @ 64W
ASUS TUF F15 (FX506, 2021) (Turbo Mode) 3.98 GHz (B+73%) @ 86°C @ 102W 3.88 GHz (B+69%) @ 95°C @ 100W 3.44 GHz (B+50%) @ 87°C @ 77W
MSI Pulse GL76 3.16 GHz (B+37%) @ 95°C @ 65W 3.00 GHz (B+30%) @ 95°C @ 59W 2.87 GHz (B+25%) @ 95°C @ 55W
MSI Pulse GL66 2.94 GHz (B+28%) @ 94°C @ 58W 2.76 GHz (B+20%) @ 94°C @ 52W 2.77 GHz (B+20%) @ 94°C @ 52W

The CPU inside doesn’t perform on par with other laptops with the same processor. It throttles heavily below 3.00GHz in the end, while keeping temperatures above 90°C.

Real-life gaming

NVIDIA GeForce RTX 3080 GPU frequency/ Core temp (after 2 min) GPU frequency/ Core temp (after 30 min) GPU frequency/ Core temp (Turbo mode)
MSI GS66 Stealth 11UH (RTX 3080 95W) 1316 MHz @ 78°C @ 94W 1336 MHz @ 82°C @ 94W
ASUS ROG Zephyrus G15 GA503 (RTX 3080 100W) 1474 MHz @ 75°C @ 100W 1475 MHz @ 74°C @ 99W
GIGABYTE AORUS 15G (RTX 3080 105W) 1341 MHz @ 82°C @ 103W 1336 MHz @ 85°C @ 103W
ASUS ROG Srix SCAR 15 G533 (RTX 3080 130W) 1616 MHz @ 80°C @ 130W 1597 MHz @ 82°C @ 130W
ASUS ROG Strix SCAR 17 G733 (RTX 3080 130W) 1523 MHz @ 81°C @ 129W 1515 MHz @ 83°C @ 130W

The RTX 3080 inside performed in similar nature to the Core i7-11800H, not going over 1400MHz, while also not overheating which is okay.

Gaming comfort

The laptop gets pretty hot on the outside when under full load, with the ventilation grill above the keyboard and the palm rest area heating up harshly.


All MSI GS66 Stealth 11Ux configurations:

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