GIGABYTE B550M K
GIGABYTE B550M K Specifications Review
GIGABYTE B550M K by GIGABYTE is a Micro-ATX form factor motherboard based on the mid-range B550M chipset and AM4 socket, providing a balanced set of features and connectivity. It is designed to support DDR4 memory, with 4 slots, a maximum capacity of 128 GB, and an overclocking speed of up to 4733 MHz. It features channels, a voltage of V and supports Error-Correcting Code (ECC) memory.
VRM Quality
The GIGABYTE B550M K has a basic VRM configuration, delivering 50 A across 5 phases. Best for low-power CPUs (≤65 W TDP). Using high-wattage chips or overclocking could cause severe thermal issues and instability. Recommended for budget builds, office workstations, and media PCs.
See the VRM Appropriate CPU Specification Table at the bottom of this page for recommended CPU options.
Expansion and Storage Overview
The GIGABYTE B550M K offers a simplified expansion and storage configuration with PCIe 4.0 support, meaning it uses PCI Express 4.0, fast enough for modern GPUs and high-speed NVMe SSDs. It also includes 1 x16 slot , and 1 x1 slot. These PCIe slots are used to connect expansion cards — with the x16 slots typically reserved for graphics cards, while x8, x4, and x1 slots are used for devices like capture cards, sound cards, or network adapters.
For storage, this motherboard provides 2 M.2 slots and 4 SATA ports. M.2 slots are high-speed connectors for modern NVMe SSDs, which are much faster than older storage, while SATA ports are used for traditional hard drives and 2.5-inch SSDs. Together, they allow you to mix fast primary storage with larger, more affordable drives for bulk data.
Connectivity Overview
This motherboard has essential connectivity features with wired Realtek® GbE LAN chip (1 Gbps/100 Mbps/10 Mbps) Ethernet . USB connectivity covers basic needs. Please refer to the specification table for details.
For video output, this motherboard includes HDMI version 2.1 , DisplayPort version 1.4 . These video outputs are intended for integrated graphics and will only function if your CPU includes integrated GPU capabilities.
Audio Quality
The motherboard includes a standard audio chipset (Realtek® ALC892/ALC897) that covers basic needs for casual listening. While adequate for everyday use with mainstream headphones or desktop speakers, discerning users may want to add a USB DAC or sound card for improved fidelity, especially for music production or high-end headphones.
Overall Quality and Value
GIGABYTE B550M K is basic and functional, carrying an overall quality score of 42.20. It is designed for budget-conscious builds or office setups where advanced features are not required, handling standard tasks effectively but lacking the polish or expandability of higher-tier models.
This motherboard offers an impressive 119.4% performance-to-price ratio, delivering excellent value by combining strong performance with reasonable cost, making it a smart choice for budget-conscious buyers who don’t want to sacrifice quality.
General Information
| Manufacturer | GIGABYTE |
|---|---|
| Motherboard Name | GIGABYTE B550M K |
| Current Price Amazon | $70 |
| Amazon Price Updated | 3 hours, 46 minutes ago. |
| Motherboard Available | True |
| Chipset / Socket | B550M / AM4 |
| Form Factor | Micro-ATX |
VRM Configuration
| CPU Power Phases (Amps) | 5 (50 A) |
|---|---|
| Power Design | 5+1 |
Memory Information
| Type / Slots | DDR4 / 4 slots |
|---|---|
| Max Capacity / Max OC | 128 GB / 4733 MHz |
| ECC Support | ✔️ ECC (Error-Correcting Code) Supported |
PCIe Slot Configuration
| Supported Version | PCIe 4.0 | ||||
|---|---|---|---|---|---|
| Slot Size | Physical Slots | Gen4 | Gen3 |
|---|---|---|---|
| x16 | 1 | 1 | 0 |
| x1 | 1 | 0 | 1 |
Storage Configuration
| M.2 Slot Count | 2 slots |
|---|---|
| M.2 Supported Lengths | 2280 |
| SATA Ports | 4 |
Onboard Audio Features
| Audio Chipset | Realtek® ALC892/ALC897 |
|---|---|
| Analog Audio Jacks | 3 jacks |
| Spatial/Surround Audio | ✔️ Rear Output Supports Spatial Audio |
Motherboard Display Outputs
| HDMI Output | HDMI - Version 2.1 (Max: 4096x2160@60 Hz) |
|---|---|
| DisplayPort Output | DisplayPort - Version 1.4 (Max: 5120x2880@60 Hz) |
USB and Thunderbolt Connectivity
Rear USB Ports
| USB 2.0 Type-A (480 Mbps) | 4 |
|---|---|
| USB 3.2 Gen 1 Type-A (5 Gbps) | 4 |
Internal USB Headers
| USB 2.0 Header (480 Mbps) | 2 |
|---|---|
| USB 3.2 Gen 1 Header (5 Gbps) | 2 |
Networking Information
| Ethernet | Chipset: Realtek® GbE LAN chip (1 Gbps/100 Mbps/10 Mbps) LAN Ports: 1 |
|---|---|
| Wi-Fi |
Module: Not Included |
| Bluetooth | Supported: No |
Button Features
| Buttons |
|---|
Quality & Features
Additional Information
| RAM | Supports DDR4 speeds: 4733(O.C.) / 4600(O.C.) / 4400(O.C.) / 4266(O.C.) / 4133(O.C.) / 4000(O.C.) / 3866(O.C.) / 3733(O.C.) / 3600(O.C.) / 3466(O.C) / 3400(O.C.) / 3200 / 2933 / 2667 / 2400 / 2133 MHz. ECC memory (ECC mode) support varies by CPU. Supports ECC Un-buffered DIMM 1Rx8/2Rx8 and non-ECC Un-buffered DIMM 1Rx8/2Rx8/1Rx16 modules. The CPU and memory configuration may affect the supported memory types, data rate, and number of DRAM modules. |
|---|---|
| Display | Integrated Graphics Processor with AMD Radeon™ Graphics support. Both DisplayPort and HDMI outputs support HDCP 2.3 and HDR. Maximum shared memory of 16 GB. |
| Expansion | The PCI Express x16 slot supports PCIe 4.0 x16 mode with AMD Ryzen™ 5000/3000 Series Processors, but runs in PCIe 3.0 x16 mode with AMD Ryzen™ 5000 G-Series/4000 G-Series/3000 G-Series Processors. The PCI Express x1 slot supports PCIe 3.0 x1 mode. |
| Storage |
M.2 Slot Details:
SATA connectors support 6Gb/s speed. |
| Audio | High Definition Audio. Supports 2/4/5.1/7.1-channel audio. The functionality of an audio jack can be changed using the audio software to configure 7.1-channel audio. |
| Buttons | The motherboard includes a Clear CMOS jumper. |
| Dimensions | 24.4cm x 24.4cm |
Note: The specifications and descriptions above are extracted by AI to present the official manufacturer data in a clearer and more natural way for easier understanding. However, this AI-processed information may contain inaccuracies. Please verify all details by consulting the official manufacturer's information provided below.
GIGABYTE B550M K Compared to Motherboards with Similar Performance and Features
Motherboard Quality & Features per Price Table
| Motherboard (Desc) | Price (Desc) | Overall_Q (Desc) | VRM_Q (Desc) | Chipset (Desc) | Exp_Str (Desc) | Connect (Desc) | Audio (Desc) | Q&F/Price (Desc) |
|---|---|---|---|---|---|---|---|---|
|
$146
|
↑
3.2%
|
49.4%
|
30.0%
|
81.0%
|
58.0%
|
33.0%
|
45.0%
|
67.0%
|
|
|
$90
|
↓
-18.2%
|
48.0%
|
30.0%
|
75.0%
|
60.0%
|
30.0%
|
45.0%
|
105.6%
|
|
|
$80
|
↓
-15.8%
|
42.4%
|
13.0%
|
81.0%
|
46.0%
|
27.0%
|
45.0%
|
105.0%
|
|
|
$70
|
↓
-30.0%
|
42.2%
|
12.0%
|
75.0%
|
48.0%
|
31.0%
|
45.0%
|
119.4%
|
|
|
$100
|
0.0%
|
40.4%
|
13.0%
|
67.0%
|
49.0%
|
33.0%
|
40.0%
|
80.0%
|
|
|
$80❗
|
↓
-1.4%
|
38.0%
|
13.0%
|
58.0%
|
37.0%
|
37.0%
|
45.0%
|
94.5%
|
|
|
$188
|
↑
1.5%
|
37.8%
|
14.0%
|
77.0%
|
45.0%
|
13.0%
|
40.0%
|
39.9%
|
|
|
$100
|
0.0%
|
36.2%
|
18.0%
|
49.0%
|
35.0%
|
39.0%
|
40.0%
|
71.7%
|
Motherboard Comparison and Detail Specifications Table
| Specification | Perf Chart | |||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Price |
$146
|
↑
3.2%
|
$90
|
↓
-18.2%
|
$80
|
↓
-15.8%
|
$70
|
↓
-30.0%
|
$100
|
0.0%
|
$80❗
|
↓
-1.4%
|
$188
|
↑
1.5%
|
$100
|
0.0%
|
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| Manufacturer | MSI | GIGABYTE | MSI | GIGABYTE | ASUS | ASRock | MSI | ASUS | ||||||||||||||||||||||||||||||||
| Chip/Socket | B550-A / AM4 | B550 / AM4 | B550M / AM4 | B550M / AM4 | B450M / AM4 | B450M / AM4 | B550 / AM4 | A520M / AM4 | ||||||||||||||||||||||||||||||||
| Form | Standard-ATX | Standard-ATX | Micro-ATX | Micro-ATX | Micro-ATX | Micro-ATX | Standard-ATX | Micro-ATX | ||||||||||||||||||||||||||||||||
| CPU Phases | 10 (60 A) | 10 (60 A) | 5 (50 A) | 5 (50 A) | 5 (50 A) | 6 (42 A) | 5 (55 A) | 6 (60 A) | ||||||||||||||||||||||||||||||||
| PWR Design | 10+2+1 | 10+3 | 5+1 | 5+1 | 5+1 | 6+2 | 5+1 | 6+1 | ||||||||||||||||||||||||||||||||
| Mem Slots | 4 / DDR4 | 4 / DDR4 | 4 / DDR4 | 4 / DDR4 | 4 / DDR4 | 4 / DDR4 | 4 / DDR4 | 4 / DDR4 | ||||||||||||||||||||||||||||||||
| Max Mem | 128 GB / 4800 MHz | 128 GB / 4733 MHz | 128 GB / 4400 MHz | 128 GB / 4733 MHz | 128 GB / 4400 MHz | 128 GB / 3200 MHz | 128 GB / 4400 MHz | 128 GB / 4866 MHz | ||||||||||||||||||||||||||||||||
| PCIe | PCIe 4.0 | PCIe 4.0 | PCIe 4.0 | PCIe 4.0 | PCIe 3.0 | PCIe 3.0 | PCIe 3.0 | PCIe 3.0 | ||||||||||||||||||||||||||||||||
| PCIe Slots | 1x16 Gen4 | 1x16 Gen3 | 2x1 Gen3 | 1x16 Gen4 | 1x16 Gen3 | 3x1 Gen3 | 1x16 Gen4 | 2x1 Gen3 | 1x16 Gen4 | 1x1 Gen3 | 3x16 Gen3 | 2x1 | 1x16 Gen3 | 1x1 | 2x16 Gen3 | 4x1 | 1x16 Gen3 | 2x1 Gen3 | ||||||||||||||||||||||||||||||||
| M.2 | 2 | 2 | 2 | 2 | 1 | 2 | 1 | 1 | ||||||||||||||||||||||||||||||||
| SATA | 6 | 4 | 4 | 4 | 6 | 4 | 6 | 4 | ||||||||||||||||||||||||||||||||
| Audio | Realtek® ALC892/ALC897 Codec | Realtek® ALC892/ALC897 | Realtek® ALC892/ALC897 Codec | Realtek® ALC892/ALC897 | Realtek ALC887/897 | Realtek ALC892/897 Audio Codec | Realtek® ALC897 Codec | Realtek ALC887/897 | ||||||||||||||||||||||||||||||||
| S/PDIF | ❌ | ❌ | ❌ | ❌ | ❌ | ❌ | ❌ | ❌ | ||||||||||||||||||||||||||||||||
| HDMI | ✔️ (2.1) | ✔️ (2.1) | ✔️ (2.1) | ✔️ (2.1) | ✔️ (None) | ✔️ (1.4) | ✔️ (2.0b) | ✔️ (2.1) | ||||||||||||||||||||||||||||||||
| DP | ✔️ (None) | ❌ | ✔️ (None) | ✔️ (1.4) | ❌ | ❌ | ❌ | ✔️ (1.2) | ||||||||||||||||||||||||||||||||
| LAN | 1x Realtek® 8111H Gigabi… (1 ports) | Realtek® GbE LAN chip (1… (1 ports) | Realtek® 8111HN Gigabit (1 ports) | Realtek® GbE LAN chip (1… (1 ports) | Realtek® RTL8111H (1 ports) | PCIE x1 Gigabit LAN 10/1… (1 ports) | 1x Realtek® RTL8111H LAN… (1 ports) | 1 x Realtek 1Gb Ethernet… (1 ports) | ||||||||||||||||||||||||||||||||
| Wi-Fi | ❌ | ❌ | ❌ | ❌ | ❌ | ❌ | ❌ | Wi-Fi Wi-Fi 5 | ||||||||||||||||||||||||||||||||
| BT | ❌ | ❌ | ❌ | ❌ | ❌ | ❌ | ❌ | v5.0 | Rear USB |
|
|
|
|
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|
❌ |
|
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| USB Headers |
|
|
|
|
|
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||||||||||||||||||||||||||||||||
| Front USB |
|
|
|
❌ |
|
❌ |
❌ |
❌ |
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VRM Appropriate CPU Specification Table
| CPU | Price | App_Performance | Game_Performance | TDP/Max | C/SC/T | L2/L3 Cache | Base/Boost | Code Name | GPU |
|---|---|---|---|---|---|---|---|---|---|
| No compatible CPU available. The motherboard's VRM is too weak to be recommended with any CPU in the database. | |||||||||
Official Manufacturer Data
Memory:
Support for DDR4 4733(O.C.) / 4600(O.C.) / 4400(O.C.) / 4266(O.C.) / 4133(O.C.) / 4000(O.C.) / 3866(O.C.) / 3733(O.C.) / 3600(O.C.) / 3466(O.C) / 3400(O.C.) / 3200 / 2933 / 2667 / 2400 / 2133 MHz memory modules
Dual channel memory architecture
Support for ECC Un-buffered DIMM 1Rx8/2Rx8 memory modules*
* ECC memory (ECC mode) support varies by CPU
Support for non-ECC Un-buffered DIMM 1Rx8/2Rx8/1Rx16 memory modules
Support for Extreme Memory Profile (XMP) memory modules
(The CPU and memory configuration may affect the supported memory types, data rate (speed), and number of DRAM modules, please refer to "Memory Support List" on GIGABYTE's website for more information.)
Graphics:
1 x DisplayPort, supporting a maximum resolution of 5120x2880@60 Hz
* Support for DisplayPort 1.4 version, HDCP 2.3, and HDR.
1 x HDMI port, supporting a maximum resolution of 4096x2160@60 Hz
* Support for HDMI 2.1 version, HDCP 2.3, and HDR.
Maximum shared memory of 16 GB
Storage:
AMD Ryzen™ 5000 Series/3000 Series Processors support SATA and PCIe 4.0 x4/x2 SSDs
AMD Ryzen™ 5000 G-Series/4000 G-Series/3000 G-Series Processors support SATA and PCIe 3.0 x4/x2 SSDs
1 x M.2 connector (M2B_SB), integrated in the Chipset, supporting Socket 3, M key, type 2280 SSDs:
Supporting PCIe 3.0 x2 SSDs
4 x SATA 6Gb/s connectors, integrated in the Chipset:
Support for RAID 0, RAID 1, and RAID 10
Expansion Slots:
AMD Ryzen™ 5000 Series*/3000 Series Processors support PCIe 4.0 x16 mode
* Actual support may vary by AMD CPU's specification.
AMD Ryzen™ 5000 G-Series/4000 G-Series/3000 G-Series Processors support PCIe 3.0 x16 mode
1 x PCI Express x1 slot, integrated in the Chipset:
Supporting PCIe 3.0 x1 mode
USB:
4 x USB 3.2 Gen 1 ports on the back panel
Chipset:
2 x USB 3.2 Gen 1 ports available through the internal USB header
6 x USB 2.0/1.1 ports (4 ports on the back panel, 2 ports available through the internal USB header)
Internal I/O:
1 x 8-pin ATX 12V power connector
1 x CPU fan header
1 x system fan header
2 x M.2 Socket 3 connectors
4 x SATA 6Gb/s connectors
1 x front panel header
1 x front panel audio header
1 x USB 3.2 Gen 1 header
1 x USB 2.0/1.1 header
1 x Trusted Platform Module (TPM) header (2x6 pin, for the GC-TPM2.0_S module only)
1 x Clear CMOS jumper
Back Panel I/O:
1 x DisplayPort
1 x HDMI port
4 x USB 3.2 Gen 1 ports
4 x USB 2.0/1.1 ports
1 x RJ-45 port
3 x audio jacks
Audio:
High Definition Audio
2/4/5.1/7.1-channel
* You can change the functionality of an audio jack using the audio software. To configure 7.1-channel audio, access the audio software for audio settings.
Special Features:
* Available applications in APP Center may vary by motherboard model. Supported functions of each application may also vary depending on motherboard specifications.
@BIOS
EasyTune
Smart Backup
System Information Viewer
Support for Q-Flash
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