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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.

9 Comments

  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.

  3. David S.

    March 25, 2020 at 2:45 am

    This is very interesting. If there was an option for a (bright) Pantone Validated 4k screen, I'd be tempted to switch from the Gigabyte Aero 15 OLED.
    The 3 fans, giant battery, dual NVMe slots, and USB-C charging are huge plus points.

    I still don't have any idea why manufacturers are throwing >144Hz displays into laptops though. Not only are you not going to reliably get frame rates that high, but the people (professionals) who really need those frame rates aren't going to be gaming from a laptop.
    I'd much rather see a cheaper, 144Hz 1080p screen with options for a ~100Hz-120Hz 1440p display or a color-accurate, 4k display for people who will do a lot of content creation and a little gaming.

    The only downsides I can see are no SD-card reader, one display option, and the "gamer" font on the key caps which are all fairly minor.

    Can't wait to see how it performs for gaming, thermally, and in terms of battery life. On paper, it looks like MSI have made an awesome laptop to rival the Razer Blade 15 (240Hz), Gigabyte Aero 15 (240Hz), and Asus Zephyrus S GX502 (240Hz).

    • Andrei Girbea

      March 25, 2020 at 12:58 pm

      Yeah, looks so. I'd expect updates for the Blade and Zephyrus as well, but not as major as with this Stealth generation. We should know more around early April when Intel and Nvidia are launching their 2020 hardware.

      As far as screens go, a 120/144 Hz QHD would be a good middle ground imo, but there's not such panel yet. Nor is a 120 Hz 4K, and gaming at 60 Hz isn't great due to tearing.

      • David S.

        March 27, 2020 at 4:47 am

        It seems manufacturers don't care about 1440p screens in laptops for some reason… It's unfortunate because it seems like a perfect middle ground between the high refresh 1080p screens and 60Hz 4k screens.

        With a lockdown in place, I've been gaming a bit more than normal on my Aero 15S OLED XA. I've been playing a lot of Ori and the Blind Forest, Forza Horizon 4, Rocket League, Cities Skylines (about 30Hz on ultra settings), and Dirt Rally 2.0 at 4k, 60Hz and I don't have any complaints. I have noticed some slight tearing in Horizon 4 but enabling v-sync fixes it.
        I'll admit I was always a console gamer before this so I've been used to 60Hz for awhile. 60Hz is plenty for the games I play. For triple-A titles, I'll gladly take graphics quality and 60Hz over high refresh rate any day. On top of that, 4k scales down to 1080p nicely so dropping the resolution to 1080p in triple-A titles still looks great if extra frames are needed.

        The newest Razer Blade Pro 17 has a 4k, 120Hz, touch-screen option but it's only for models with the RTX 2080 and starts at $3700 (yikes).
        Hopefully we see more 4k, 120Hz screens from other manufacturers because I love the resolution (text in documents looks so crisp) but having the ability to play games at 1080p, 120Hz on the same screen would be awesome.

        • Andrei Girbea

          March 27, 2020 at 11:12 am

          I've been asking OEMs about this and there are a two reasons for it:

          1. the lack of good 1440p panels, especially options with higher refresh rates. Developing such a panel would imply costs, and these would need to be supported by the OEM asking the panel manufacturer for such a specific design.
          2. Most people are fine with either FHD high refresh, which is what most push on gaming laptops, or 4K high color accuracy, which is the alternative for creators and those interested in a workstation. I'd expect most OEMs to offer both options on their gaming laptops in the near future.

          Point 1 is probably the reason the 4K 120Hz is only bundled with the top configuration, Razer most likely paid highly for that panel to be developed, they probably have exclusivity for a while and need to make that investment back.

          I'm with you on the whole subject though, I'm all for a 1440p 120-144 Hz panel as well, preferably with 400-nits of brightness and decent colors. that could be a good jack of all trades for most buyers.

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