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MSI - B450I GAMING PLUS AC Mini ITX AM4 Motherboard

( 4.3 Average / 15 Ratings )




Part #



Black / Red

Form Factor

Mini ITX

CPU Socket



AMD B450

Memory Slots

2 x 288-pin DIMM

Memory Type

DDR4-1866 / 2133 / 2400 / 2666 / 2800 / 2933 / 3000 / 3200 / 3466

Maximum Supported Memory

32 GB

RAID Support


Onboard Video

Depends on CPU

CrossFire Support


SLI Support


SATA 6 Gb/s


Onboard Ethernet

1 x 1000 Mbit/s

Onboard USB 3.0 Header(s)


Completed Builds Using This Part

See All Completed Builds


Merchant Base Promo Shipping Tax Availability Total
Alternate Belgium €132.90 +€3.99 s/h In stock €136.89
Bytes At Work €132.00 +€4.95 s/h Out of stock €136.95

Price History (Excluding Tax) History:


adamc30 7 points 8 months ago
from completed build The little Linux Box that could!

I gave it 4 stars because there is only a cpu fan header and one system fan header. The case I bought only came with one fan and I'm not overclocking so it won't be an issue for me, but if I was going to use this as a gaming rig I would want more fan headers.

abuseJUNKEY 7 points 4 months ago
from completed build Children's school PC

This is my first true personal ITX board. I've learned a few things. Like the lack of fan headers and cramped board space. Like I said if i had known I was not going to need an ITX board (or if i would have measured the other case) I would have went with a cheaper option. I picked this because I wanted a 400 series. I have no other AM4 chips if I had ordered a 300 series and needed an upgrade it would have fallen out of my time frame. It's a great little ITX board to work on though. no real complaints outside of the form factor restrictions. Given the need, I would still buy this again for future builds. Edit: In regards to the XMP setting and my DDR4-3000 ram. I had to go in and set it manually. I only had 2 options and they were both under 3000. It wasn't that hard to set manually and the numbers are on a sticker on the card.

Justiceinacan 3 points 3 months ago

Excellent feature-filled AM4 ITX board for a low price.

Spart4cus 9 points 3 months ago

MSI have outdone themselves again. The Mini-ITX mobo was everything that I was looking for such as the PCI Express Steel Armour Slot for a stronger hold on the Graphics Card. Core boost technology for higher performance and Turbo M.2 for faster transfer of data. The Turbo M.2 is almost 7X faster than SSD.

Coyote79 12 points 3 months ago
from completed build Mini Monster Mesh

I think I like it much better than the Asus itx boards much more complete board even with 1 m.2 slot and cheaper

Footsocks 15 points 2 months ago
from completed build Ryzen 3 2200G 400$ Budget Build

Great build quality and an easy to follow BIOS. Only complaint would be the lack of a second case fan header and the location of the front I/O and audio headers(they're right above the GPU slot).

4cylinder 5 points 2 months ago
from completed build My second SFF build

Most advanced mobo I've ever used (also the first one I've bought that is specifically advertised for gaming). Excellent fan control options. Includes Bluetooth and Wifi which is awesome!

justinindian 4 points 2 months ago
from completed build Corsair 380T rgb Build

I've heard that MSI has really bad customer service with their motherboards so I bought the in store replacement plan from Memory Express. This motherboard lacks a lot of features compared to my previous ATX motherboards but it makes up for it in it's SFF. I wish it had USB-C and another fan header though. :(

BaronMunchausen 11 points 1 month ago
from completed build Simple itx gaming system.

This is so small but can hold so much. Make sure if you use the m.2 (on back of the board) that you add that before you put the motherboard on the case.

Putting this in the case was a little tedious for I had to put some slight pressure to get the 4 holes to line up on the case/motherboard. Also would be nice to have 1 or 2 more fan connects on the motherboard so that is a star off but other than that a stellar MB to use.

genki831 17 points 1 month ago
from completed build Family HTPC/Game Box

It looks nice, it's small. The built in WiFi is nice. The BIOS is easy and useful. I still think miniITX boards are overpriced and it only has one fan header.