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MSI GS66 Stealth gets redesigned chassis, 10-gen Core H CPUs and 99 Whr battery, vs GS65 Stealth

By Andrei Girbea - @ andreigirbea , last updated on January 8, 2020

MSI are refining most of their gaming notebooks lineup for 2020, with revamped editions of the ultraportable GS Stealth series, the performance GE Raider and the budget-friendly GF65 Thin lines.

The MSI GS66 Stealth follows up the popular GS65 Stealth Thin from 2018/2019, which we’ve reviewed in its RTX 2080 version here on the site, but also in its larger GS75 implementation.

It builds on the same principles, as an ultraportable performance laptop with exquisite design lines, but this time around in a redesigned chassis. That’s great news, as the previous GS65 chassis felt rather weak and squeaky, despite MSI’s efforts to strengthen it in the 2019 update.

The GS66’s new build is boxier, similar to the Razer Blade and Asus ROG Zephyrus M.

From what I can tell based on the preview-pictures and videos, it’s also marginally thicker and bigger than before, but cleaner as well, with a completely black theme and subtly integrated branding elements: a dark MSI logo under the screen and a dark Dragon Shield on the lid.

2020 MSI GS66 Stealth ultraportable

MSI GS66 Stealth 2020MSI GS65 Stealth Thin 2019
Screen15.6 inch, 1920 x 1080 px, IPS equivalent, 240/300 Hz, matte15.6 inch, 1920 x 1080 px, IPS equivalent, 240 Hz, matte
ProcessorIntel 10th Gen Comet Lake Core H, up to Core i9Intel 9th Gen Coffee Lake-R Core H, up to Core i9-9880H
VideoIntel HD and NVIDIA GeForce (probably Super versions)Intel HD 630 and up to NVIDIA GeForce RTX 2080 Max-Q with 8GB GDDR6 VRAM
Memoryup to 32 GB DDR4 2666 MHz (2× DIMMs)
Storage2x M.2 slot, both support PCIe x4
ConnectivityWiFi AX, Bluetooth 5.0, Gigabit EthernetKiller Wireless-AC 1550i, Bluetooth 5.0, Killer E2500 Gigabit Ethernet
Ports3x USB-A 3.1 gen2, 2x USB-C with Thunderbolt 3, HDMI 2.0, combined mic/earphone, RJ45 Lan, Kensington Lock3x USB-A 3.1 gen2, 1x USB-C with Thunderbolt 3, HDMI 2.0, mini-DP, mic, earphone, RJ45 Lan, Kensington Lock
Battery99.9 Wh80 Wh, up to 230 W charger
Size358 mm or 14.08” (w) x 248 mm or 9.75” (d) x 17.5 mm or .69” (h)
Weight~1.9 kg (4.17 lbs), .89 kg (1.96) for the charger, EU version
ExtrasRGB keyboard, large clickpad, HD webcam and IR cameras, up-firing stereo speakersRGB keyboard, large clickpad, HD webcam, bottom-firing stereo speakers

The entire hinge and back part have been redesigned as well, and I fear this approach no longer allows the screen to fall back flat to 180-degrees, which was a feature I appreciated on the GS65.

The keyboard, clickpad and IO haven’t changed much, with most ports still on the lateral sides, still no SD-card reader and one extra USB-C slot than before, which replaces the miniDP on the GS65. I’m also seeing a combined headphone/mic jack, instead of the dedicated jacks before, and IR cameras at the top of the screen, which the previous Stealth lacked. I

Back to that keyboard, I did notice that MSI moved the Windows key to the left, like on most Windows notebooks, but also integrated the Power Buton as the top-right key, pushing the Delete key to the left. Not a fan, and something you’ll need to get used to if upgrading from an older MSI notebook.

The speakers fire through cuts in the palm-rest now, so we should hopefully see in improvement in the audio department over the GS65. Not sure about that positioning, though, as I fear they might be easily obstructed by our hands with daily use. There’s also still a mesh grill at the top of the keyboard, which I  expect that to be used for air intake like on the GS65.

As far as screen options go, it looks like this we’ll also get the newer 300 Hz IPS panel that’s been touted for the GE66 Raider series. Not that you should care, anyway, the previous 240Hz options were perfectly suitable for gaming, unless you’re playing shooters at a very, very competitive level.

Aside from the changes we can easily see, MSI further emphasizes on the updates they made beneath the hood. The GS66 gets a hardware bump to Intel’s 10th gen Core-H Comet Lake platform, the latest Nvidia GeForce RTX graphics (we can assume Super refreshes of the current 2060/2070MQ/2080MQ offers) and a 99.9 Wh battery, the largest legal capacity for flying.

It’s too early to tell anything about the performance, especially if these get the Super RTX chips. On the processor’s side, 10th-gen Comet Lake Core H is just a further refinement of the 14nm process, so I wouldn’t expect more than minor refinements and potentially higher-clocked speeds, as long as allowed by thermals.

Speaking of, MSI have redesigned the thermal module in the GS66 Stealth, opting for what they call a Cooler Boost Trinity+ design with three fans, very thin .1 mm fan blades and 10% increased airflow over the fans used in the GS65. This is another welcomed update, as the previous GS65 struggled in demanding combined loads due to high thermals and could only accommodate the 80W version of the RTX 2080 chip in its higher tier variant, while some of the competition was able to squeeze in the slightly faster 90W version in their 15-inchers.

No word on the types of RAM and storage, or on whether the hardware is easier to access this time around, or still requires the take out the motherboard.

All in all, while we don’t have all the details yet, the GS66 Stealth seems to address two of the main GS65’s problems: build quality and performance/thermals. Add in a tuned fan-profile, easier hardware access, improved quality control, and more competitive pricing, and this could get very close to the top-pretenders in its class in 2019, the Asus ROG Zephyrus S and the Razer Blade 15, which won’t probably get more than a hardware bump in the first part of 2020.

No word on pricing and availability just yet, but we’re looking forward to reviewing the updated 2020 MSI GS66 Stealth Thin and share our findings with you, so stay tuned for updates.

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Andrei Girbea, Editor-in-Chief of Ultrabookreview.com. I've been covering mobile computers since the 2000s and you'll mostly find reviews and thorough guides written by me here on the site.


  1. Shunya

    January 7, 2020 at 4:13 pm

    What about case, is it still super flimsy?

    • Andrei Girbea

      January 7, 2020 at 4:15 pm

      It's a complete redesign and MSI were aware of the problem, so probably not. It's also thicker and bigger than on the GS65, which further supports an improved build.

      • Shunya

        January 8, 2020 at 2:41 am

        Looks very promising then
        And they moved power connector from right side to the right which is plus however swapped fn and win keys which is minus
        As for cooling looks like they use 2 fans and 2 heat pipes on gpu and one heat pipe one fan on cpu, I hope i5 will be sufficient
        But also it’s very important to have fans inaudible or fully stoped in light load with cpu temp below newly 55C could they setup that?

        Ps you have a typo “Razer Balde 15”

        • Andrei Girbea

          January 8, 2020 at 11:48 am

          WE'll see about the fan performance and noise, no way to tell without testing.

  2. bittricks

    January 9, 2020 at 6:03 pm

    Unless MSI equals Razer or Dell XPS case quality – with multiple verified reviews that MSI has finally created robust cases – like tank quality – I won't even look at one.

    I watched a guy drop a $3,000 US MSI laptop not even 2 English feet, and the thing snapped, crackled and popped. Instant paper-weight.

    Sorry, but I just don't think MSI engineering can get it right because they've been fiddling around, avoiding a fix for the trashy flimsy cases for well over a decade.

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