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MSI X399 SLI PLUS sTR4 AMD X399 SATA 6Gb/s USB 3.1 ATX Motherboards - AMD

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  • AMD X399
  • Ryzen Threadripper Series
  • DDR4 3600+(OC)/ 3466(OC)/ 3333(OC)/ 3200(OC)/ 3066(OC)/ 2933(OC)/ 2800(OC)/ 2667(nonOC-by SPD)/ 2667(OC)/ 2400/ 2133 MHz

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  • Overview
  • Specifications
  • Warranty & Returns
  • Reviews

X399 SLI PLUS
MAXIMUM CLASS

1 Clear CMOS & BIOS FLASHBACK+ button
2 PS/2 Combo & USB 2.0 Port
3 8 x USB 3.1 Gen1
4 LAN Port & Lightning USB 3.1 Gen2 Type A+C
5 Golden audio jacks with S/PDIF
Z270 Gaming M3
6 Mystic Light RGB Cover
Change up to 16.8 million colors & 17 LED effects
7 Heavy plated heatsinks
Leading heatsinks design, for maximum cooling
8 Mystic Light RGB heatsink
Change up to 16.8 million colors & 17 LED effects
9 DDR4 Boost
Optimized traces and isolated memory circuitry
10 PCI-E Steel Armor
Protecting VGA cards against bending and EMI
11 Triple Turbo M.2 & 1 x M.2 Shield
NVMe support, up to 32 Gb/s using PCI-Express Gen3 x4
12 Audio Boost 4 with amplifier
Optimized audio using the best components, 120 dB SNR 32-bit

CUSTOMIZE YOUR GAMING RIG


Personalize your PC with 16.8 million colors & 17 effects through Mystic Light RGB LED. Controlled in one click with the Mystic Light APP or a mobile device.
X399
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Works with certified Mystic Light Sync products:
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DESIGNED FOR UNLIMITED PERFORMANCE


MSI X399 motherboards are optimized to maximize the performance on the 8th Gen Intel® processors. Choose MSI and unleash the full potential of your system through optimized PCB and power delivery design with load line calibration.



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Unmatched Memory Performance


MSI motherboards are crammed with features to fuel your gaming rig's memory with more speed, higher overclockability and increased stability.

X399


Best compatibility


Optimized traces and a fully isolated memory circuitry ensures perfect stability and performance, so you never have to worry about your system crashing during games.

X399


M.2 SHIELD: MAXIMIZE SSD PERFORMANCE, PREVENT SLOW DOWNS


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World's fastest SSDs can start to lower performance when getting hot. The new onboard M.2 Shield is the next generation M.2 Thermal solution avoiding this by offering the best thermal protection to make sure the SSD maintains maximum performance.

  1. Delays throttling
  2. Higher maximum transfer speed
  3. Faster overall drive performance
X399


Maximize your USB Device performance


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Transfer your favorite games, music and movies over USB faster than ever. MSI offers a wide variety of options to connect and boost your USB 3.1 devices, delivering lightning-fast transfer speeds!

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AMPLIFY YOUR GAME WITH AUDIO BOOST 4


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Like a dedicated sound card Audio Boost 4, powered by Nahimic, offers a HD audio processor, dedicated amplifier and high quality audio capacitors, all physically isolated from the rest of the motherboard circuitry to ensure the purest audio signal to locate enemies with pin-point accuracy.

X399

Immerse yourself into Virtual Worlds


Integrating the very best of cutting edge technologies on MSI hardware provides a smooth Mixed Reality, Augmented Reality and Virtual Reality ride. Through joint efforts with major VR brands, combined with unique MSI features to optimize VR, MSI brings gamers and professionals a vivid and realistic experience in which content truly comes alive.

X399X399



Learn more about the MSI X399 SLI PLUS

Warranty, Returns, And Additional Information
  • Warranty
  • Limited Warranty period (parts): 3 years
  • Limited Warranty period (labor): 3 years
  • Read full details
  • Return Policies
    • Return for refund within: Non-refundable
    • Return for replacement within: 30 days
  • This item is covered by Newegg.com's Replacement Only Return Policy.
Ownership: 1 week to 1 month
Verified Owner
4/ 5
beast of a motherboard

Pros: 4 channel memory, threadripper support, usb C ports and 2 USB 3 headers.

Cons: MSI does not include a riser plug for the case component interface (power button reset button, power LED and HDD LED. Also location of connections of these case connections is not intuitive as the speaker lead is above a USB header and hte USB header has the same pin layout.

Overall Review: Mother board is stable and a beast, just make sure all drivers are the latest before doing windows 10 updates as some drivers are incompatible with some feature versions of windows 10.

Did you find this review helpful?
Manufacturer Response:
Dear Valued Customer,

Thank you for sharing your experience with the MSI product! If you ever require technical assistance or warranty support, please feel free to contact our technical support department directly at 626.271.1004 from M to F, 9am to 6pm Pacific Standard Time.

Thanks for choosing MSI!

Best Regards,
MSI Review Team
4/ 5
Threadripper rules

Pros: The Good:

1. It is an X399 board so it is fully featured
2. 64 PCI_E 3.0 lanes
3. 2 USB 3.1 20 pin front panel ports.
4. USB C internal and rear ports.
5. Well executed RGB elements.
6. 10+2 phase VRM
7. The TR4 socket is a breeze to install.
8. The USB ports on the back (8) are arranged intuitively.
9. The BIOS is nice and user friendly
10. The layout of the board is well done

Cons: Now for the bad

1. There are only 2 RGB headers on the board.
2. As with most X399 boards, booting can take time.
3. It is not cheap or inexpensive.

Overall Review: Getting into Threadripper was not recommended to the average user based on price but today the landscape has changed. The launch of Ryzen 3000 chips has forced the price of TR4 chips to the point where a 1920x IS 33% the cost of the 3900X and the 2920x is %57. The boards for X570 do vary but even the best X570 does not hold a candle to TR4. This is my 3rd TR4 board. I had an As Rock before but I sold it for a great deal. I then bought a Gigabyte variant but that board did not last very long before needing RMA. I decided to get this MSI board and I am not disappointed

1 out of 1 people found this review helpful. Did you?
Manufacturer Response:
Dear Ricardo,

Thank you for reviewing the X399 SLI PLUS! If you ever require technical assistance or warranty support, please feel free to contact our technical support department directly at 626.271.1004 from M to F, 9am to 6pm Pacific Standard Time.

Thanks for choosing MSI!

Best Regards,
MSI Review Team
Ownership: 1 week to 1 month
Verified Owner
4/ 5
Great price/performance

Pros: - I could still fit a RTX 2070 in the top PCIe slot with a massive 140mm Noctua heat sink on the CPU (about 1mm clearance)
- Great fan configuration options. 6 bios-controlled fan headers, either pwm or dc. One fan header on the top left corner where the exhaust fan usually goes, two in the top right corner for the CPU (fan & pump), the rest are along the bottom.
- That it could charge an iPad was a pleasant surprise (software required.)
- Flashback+ is a great idea. Power and reset buttons on the MB are nice, too (don't have to plug in the case cables at first.)
- I was able to route cables to the places they needed to go with no problems.
- Lots of usb ports on the back

Cons: - major: VRM gets very hot at full CPU load on a 2990WX. The on-board sensor reads 96C, and pointing a thermal camera at the back of the board I see 100C. There's no built-in way to attach a fan, but my case had a fan mount above it which helped some. Thankfully, I don't ever load the CPU that hard, even when compiling across all 64 cores (what I bought this for.) To be clear, I don't think it's exceeding its design ratings. I just don't like it being that hot.
- minor: Changing hardware (like plugging in a fan) will cause the BIOS to reset all the smart fan settings you'd made previously. I don't see a way to save/reload these settings, either. I haven't found a way to adjust the smart fan settings outside the BIOS, and rebooting to tweak them is a pain. Thankfully, after day 1, there's not much tweaking to do.

1 out of 1 people found this review helpful. Did you?
Manufacturer Response:
Dear Valued Customer,

Thank you for sharing your experience with the MSI product! If you ever require technical assistance or warranty support, please feel free to contact our technical support department directly at 626.271.1004 from M to F, 9am to 6pm Pacific Standard Time.

Thanks for choosing MSI!

Best Regards,
MSI Review Team
5/ 5
Does this mobo not support 16GB uDIMMs?

Pros: It's an MSI mobo

Cons: 16GB uDIMMs not listed in their

0 out of 1 people found this review helpful. Did you?
Manufacturer Response:
Dear Frederick,

Thank you for sharing your experience with the X399 SLI PLUS! If you ever require technical assistance, please feel free to contact our technical support department directly at 888.447.6564 from M to F, 5am to 4am Pacific Standard Time.

Thanks for choosing MSI!

Best Regards,
MSI Review Team
Ownership: 1 day to 1 week
Verified Owner
4/ 5
One MASSIVE Flaw

Pros: Great voltage stability, amazing feature set, and honestly pretty good software suites. The packaging was fantastic. The cooling of the electrical components and chipset are pretty decent. Overall it's typical MSI quality and I loved it. I've built several hundred desktops and this project had only one massive problem, which you'll read about below. Other than that, the board is amazing, impressive, and quite perfect.

Cons: Right out of the box, mine didn't support Threadripper 2 CPUs. I couldn't figure out why it was sitting at E6 in the POST test and not displaying anything on the monitor. According to the manual, that's not a valid code and it's reserved for future use, which is obviously not true. You have to flash this board to at least the A5 revision BIOS to use threadripper 2 CPUs and I chose the latest A7. The method is so insane and obscure compared to normal flashing but I do understand why they did it this way from a technical standpoint.

So it can flash with no CPU installed at all, which is pretty wild. You have to download the newer BIOS ROM from MSI's support page, put it on a flash drive that's 16GB or less and specifically formatted with the FAT32 file system. Then you have to rename the file MSI.ROM without accidentally applying a double file extension. Then you have to insert it into a specific USB port on the back. Then you have to hit the BIOS Flashback button on the board and wait about 4 minutes for it to install the new ROM.

There is NO INDICATION anywhere in the manual or troubleshooting tips or the useless E6 POST code to tell you "hey, I wonder if the BIOS firmware is compatible with the new Threadrippers' subtle microcode changes." Well hopefully you'll see this if it happens to you because it had me pretty confused and worried for an hour or so.

By the way, MSI's tech support department's standard solution is to have you send it to them where they'll patch the BIOS and send it back. That'll take

Overall Review: This board will almost definitely start shipping with an update BIOS at some point so the entire incompatibility issue with be a non-issue, it's just a matter of how soon.

10 out of 10 people found this review helpful. Did you?
Manufacturer Response:
Dear Valued Customer,

Thank you for sharing your experience with the MSI product! If you ever require technical assistance, please feel free to contact our technical support department directly at 626.271.1004 from M to F, 9am to 6pm Pacific Standard Time.

Thanks for choosing MSI!

Best Regards,
MSI Review Team
Ownership: 1 week to 1 month
Verified Owner
5/ 5
Works Great

Pros: Booted up the first time with a 1950x and 32gb 3200mhz of Gskill ram

Cons: could use more rgb connectors... the 5v and 12v are on the bottom left... could use one on the top right of the board

Overall Review: Comp Specs
1950x
2x G.SKILL TridentZ RGB Series 16GB (2 x 8GB) DDR4 3200 Model F4-3200C16D-16GTZR
Crucial MX500 M.2 2280 1TB
EVGA 210-GQ-1000-V1 GQ 80 Plus Gold, 1000W
Cooler Master MasterLiquid ML360 RGB TR4

1 out of 1 people found this review helpful. Did you?
Manufacturer Response:
Dear Valued Customer,

Thank you for sharing your experience with the MSI product! If you ever require technical assistance, please feel free to contact our technical support department directly at 626.271.1004 from M to F, 9am to 6pm Pacific Standard Time.

Thanks for choosing MSI!

Best Regards,
MSI Review Team
Ownership: 1 week to 1 month
Verified Owner
5/ 5
works as intended

Pros: -functioning motherboard
-works

Cons: -usb C not functional

Overall Review: bought this as part of my first pc build. LEDs look pretty cool, and it was pretty user-friendly

1 out of 1 people found this review helpful. Did you?
Manufacturer Response:
Dear Valued Customer,

Thank you for sharing your experience with the MSI product! If you ever require technical assistance, please feel free to contact our technical support department directly at 626.271.1004 from M to F, 9am to 6pm Pacific Standard Time.

Thanks for choosing MSI!

Best Regards,
MSI Review Team
1/ 5
Good feature set & price, but a dud

Pros: Everything you need, nothing you don't - on paper, probably the best value basic X399 board for Threadripper. Convenient ATX board size with sensible port layout.

Cons: I will never know whether I was just unlucky or not, but board suffered from high TMPIN values (often around 60-65'C with Threadripper 2950X) while other values seemed cool. Board would crash under high CPU loads such as WinRAR as the heat would rise - additionally the built-in HD Audio failed to recognize and between these two issues ended up scrapping the board for a MSI MEG X399 (which works great.)

Overall Review: Again, I have no way of knowing if I just got a bad board, but the hours lost diagnosing this... <shakes head>. What a waste of time and effort.

2 out of 5 people found this review helpful. Did you?
Manufacturer Response:
Dear Valued Customer,

Thank you for sharing your experience with the MSI product. We certainly value your feedback and please accept our sincerest apologies for any inconvenient experience. If you have any further questions regarding this product or have any suggestions for improvement for us, please do not hesitate to contact us directly at usreview@msi.com and we will be more than happy to assist you. If you require further technical assistance, please feel free to contact our technical support department directly at 626.271.1004 from M to F, 9am to 6pm Pacific Standard Time.

Thanks for choosing MSI!

Best Regards,
MSI Review Team | JC11282018018 | usreview@msi.com
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