Gigabyte B550M K

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💡 How to pick a motherboard
What to look for:
  • Socket matches your CPU (AM5, LGA1851, etc.)
  • Form factor fits your case (ATX, mATX, ITX)
  • RAM type (DDR4 or DDR5) and slot count
💰 Budget: $100-$150. Mid-range: $180-$280. High-end: $300+ with WiFi, PCIe 5.0
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ProductSocketForm FactorChipsetWiFiValuePrice
Gigabyte B550M K Motherboard
Gigabyte B550M K
Gigabyte★★★★★4.5
AM4
mATX
B550
None
S
$69.99
2 stores
Specifications
SocketAM4
Form FactormATX
RAM Slots2
MemoryDDR4
Max RAM64
Memory Speed*4733
M.2 Slots1
SATA Ports4
PCIeGen4.0
WiFiNone
Ethernet1GbE
USB-CNo
AudioRealtek ALC887
value100
UPC00889523036006
Model #B550M K
* Memory Speed is the max supported by this motherboard. Actual speed also depends on your CPU's memory controller and RAM kit rated speed.
PERFORMANCE
54%
Customer Reviews★★★★★4.8 · 5 reviews
★★★★★Not a bad motherboard for the price.
It's a great board it came in perfect running condition and I have had no issues with it so far. It was pretty easy to install as wall i didn't have to take the pc apart much as I ordered it as a replacement. A good well-rounded motherboard.
Dave10606 · 2026-04-10 · via amazon
★★★★★Good quality, low price, been running well for a year (local AI rig).
Good board for the price when I got it. Running a single powerful gpu with high ram for a local AI rig and it handles heat well. Heavy duty feel to it. Wish it had two pcie slots, but you get what you pay for and this one is cheap. Good for the cost.
Jon · 2026-04-11 · via amazon
★★★★★GIGABYTE B550M K
Excellent motherboard, it really surprised me. The build quality is very good and it's clearly a durable product. Highly recommended.
Richard Taveras peña · 2026-04-25 · via amazon
★★★★★Works as intended, no RGB headers
NO RGB HEADERS Works as intended with no issues, great value for AM4 board with 4 ram slots. Easy install/BIOS setup
derik han · 2026-03-31 · via amazon
★★★★★Decent mobo
It’s a pretty good mobo, but the only problem is the way they have you secure the m.2 ssds. Which snapped and broke
Brayden · 2026-03-05 · via amazon
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AmazonBEST
✓ In Stock
$69.99
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Best Buy
✓ In Stock
$127.49
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MSI
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N/A
Newegg
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Newegg (Open Box)
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VALUE SCORE
S
30.9
Exceptional value
Performance (54%) ÷ Price ($69.99) = 30.9
S ≥28 · A ≥20 · B ≥14 · C ≥8 · D <8
FUTURE-PROOFING
⚠️AM4 — end of life, no CPU upgrade path
⚠️DDR4 only — no DDR5 upgrades
Save $57.50 at amazon vs bestbuy
Gigabyte B550M K Motherboard