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GIGABYTE · AM5 · B650

GIGABYTE B650 UD AX

ATX · DDR5 · 4 DIMMs · 6-phase VRM · 6

Quality
48
VRM
18
Value
54
Amazon
$170
GIGABYTE B650 UD AX
View GIGABYTE B650 UD AX Gallery in high resolution
$170
Available Updated 3 days, 9 hours ago Prime FBA
Overall48.0
VRM18.0
Chipset74.0
Expansion / storage63.0
Connectivity45.0
Audio40.0
Quality / price53.7
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Written analysis

GIGABYTE B650 UD AX at a glance

The GIGABYTE B650 UD AX uses the ATX form factor, AM5 socket, and B650 chipset. This is a balanced mainstream platform: enough expansion and connectivity for a performance PC without paying only for flagship extras.

Memory support is DDR5 across 4 DIMM slots, with up to 256 GB and rated overclocked speeds up to 8000 MT/s. XMP / EXPO memory-profile support is recorded for easier tuning.

Best fit: a mainstream gaming, home, or office system with moderate expansion needs.

Power delivery

The calculated VRM score is 18.0, placing the power delivery in the basic class. The board lists 6 CPU power phases, 60 A power stages in a 6+2+2 layout. CPU power input is listed as 1. Keep it paired with lower-power processors and avoid sustained overclocked loads.

Expansion and storage

The expansion and storage score is 63.0: balanced . The platform supports PCIe 4.0. Physical expansion includes 4 ×16 slots.

On-board storage consists of 3 M.2 slots supporting 5.0, 4.0 and 4 SATA ports. Supported M.2 lengths are listed as 25110, 22110, 2580, 2280. That is enough NVMe capacity for a multi-drive gaming or creator setup without immediately relying on an add-in card.

Connectivity and rear I/O

The connectivity score is 45.0, rated essential. Wireless networking is Wi-Fi 6 ; wired networking is Realtek® RTL8111H GbE LAN chip (1 Gbps/100 Mbps/10 Mbps) at up to 1000 Mbps. The recorded USB provision is 9 rear connections and 1 front-panel connections. The specification sheet below separates every USB speed and connector type.

Display connectivity includes HDMI 2.1, DisplayPort 1.4. These motherboard outputs require a processor with integrated graphics.

Audio

The audio score is 40.0. This is a standard onboard solution using Realtek ALC897. It covers normal gaming and communication; demanding headphones or production work still benefit from an external interface. The rear panel has 3 analogue jacks.

Buying verdict

Overall quality is 48.00, a basic but usable result for office, media, and budget gaming systems.

At the recorded Amazon price, the quality-to-price score is 53.7—a balanced value for its feature class.

Board data

Full specifications

Platform, expansion, storage, rear I/O, internal headers, networking, audio, and board controls in one sheet.

General

Manufacturer
GIGABYTE
Motherboard
GIGABYTE B650 UD AX
Chipset / socket
B650 / AM5
Form factor
ATX
Launch price
—
Amazon price
$170
Availability
In stock
Price updated
3 days, 9 hours ago

VRM

CPU phases
6 (60 A)
Power design
6+2+2
EPS connector
1

Memory

Type / slots
DDR5 / 4 DIMMs
Max capacity / OC
256 GB / 8000 MT/s
Per DIMM
64 GB
XMP / EXPO
Yes

PCIe

Supported version
PCIe 4.0
x16 physical
4
x16 Gen 4
1
x1 physical
0
x1 Gen 3
3

Storage

M.2 slots
3
M.2 lengths
25110, 22110, 2580, 2280
M.2 modes
5.0, 4.0
SATA ports
4

Display outputs

HDMI
Yes · 2.1 · 4096x2160@60 Hz
DisplayPort
Yes · 1.4 · 3840x2160@144 Hz
USB-C DisplayPort
No

USB

Rear USB 2.0
6
Rear USB 3.2 Gen 1 Type-C 5 Gbps
1
Rear USB 3.2 Gen 2 Type-A 10 Gbps
2
Front USB 3.2 Gen 1 Type-C 5 Gbps
1
Header USB 2.0
6
Header USB 3.2 Gen 1 Type-A 5 Gbps
2

Networking

Ethernet
Realtek® RTL8111H GbE LAN chip (1 Gbps/100 Mbps/10 Mbps)
LAN ports
1
LAN speed
1000 Mbps
Wi-Fi
6
Bands
2.4GHz, 5GHz, 6GHz
Antenna connectors
2
Bluetooth
No

Audio

Chipset
Realtek ALC897
Analog jacks
3
Gold-plated jacks
No
Optical S/PDIF
No
Spatial audio
Rear output

Buttons

BIOS flashback
No
Clear CMOS
No
Q-Flash Plus
Yes
Smart button
No
Onboard start / reset
No

Additional information

Memory notes
Supports non-ECC Un-buffered DIMM 1Rx8/2Rx8/1Rx16 memory modules. Also supports AMD EXtended Profiles for Overclocking (AMD EXPO™). The CPU and memory configuration may affect the supported memory types, data rate (speed), and number of DRAM modules, please refer to the official "Memory Support List" for more information.
Display notes
HDMI supports HDCP 2.3 and native HDMI 2.1 TMDS compatible ports. Graphics specifications may vary depending on CPU support.
Expansion notes
The primary PCIEX16 slot's bandwidth depends on the installed CPU: Ryzen 7000/9000 Series support PCIe 4.0 x16, Ryzen 8000-Phoenix 1 support PCIe 4.0 x8, and Ryzen 8000-Phoenix 2 support PCIe 4.0 x4. The PCIEX1_1 and PCIEX1_2 slots become unavailable when an AMD Ryzen 8000 Series-Phoenix 2 processor is used. The PCIEX16 slot can only support a graphics card or an NVMe SSD.
M2A_CPU
5.0 4 · 25110, 22110, 2580, 2280 · CPU — The supported PCIe version depends on the installed CPU. AMD Ryzen 7000/9000 Series support PCIe 5.0 x4/x2, while AMD Ryzen 8000 Series-Phoenix 1/2 support PCIe 4.0 x4/x2.
M2P_CPU
4.0 2 · 22110, 2280 · CPU — The slot's functionality is dependent on the installed CPU series, but all listed CPUs support PCIe 4.0 x2 mode.
M2C_SB
4.0 4 · 22110, 2280 · Chipset
RAID
SATA / PCIe (0, 1, 10)
Storage notes
RAID 0, 1, and 10 are supported for both NVMe and SATA storage devices. The performance and supported PCIe version of the M2A_CPU and M2P_CPU slots are dependent on the installed CPU model.
USB notes
Some USB 2.0 ports are provided via internal hubs connected to the CPU and Chipset.
Audio notes
Supports 2/4/5.1/7.1-channel audio. 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.
Networking notes
Realtek RTL8851 WIFI 6 module. Supports WIFI a, b, g, n, ac, ax. 2T2R antenna configuration.
Button notes
The text mentions a Clear CMOS jumper, but not a button.
Fan / RGB headers
1 CPU · 1 OPT · 2 AIO · 3 chassis · 3 ARGB · 1 RGB
Other headers
Front audio · System panel · TPM
Dimensions
30.5 cm x 24.4 cm

Extracted notes sit here. Official manufacturer copy is at the bottom of the page.

Amazon

Price history

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Vendor copy

Official manufacturer data

Raw manufacturer text kept for reference. Structured specs above are extracted from this copy and are the source for scores and tables.

Memory

Support for DDR5 8000(OC)/ 7800(OC)/ 7600(OC)/ 7200(OC)/ 7000(OC)/ 6800(OC)/ 6600(OC)/ 6400(OC)/ 6200(OC)/ 6000(OC)/ 5600(OC)/ 5200/ 4800 MT/s memory modules
4 x DDR5 DIMM sockets supporting up to 256 GB (64 GB single DIMM capacity) of system memory
Dual channel memory architecture
Support for non-ECC Un-buffered DIMM 1Rx8/2Rx8/1Rx16 memory modules
Support for AMD EXtended Profiles for Overclocking (AMD EXPO™) and 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

Integrated Graphics Processor:
- 1 x DisplayPort, supporting a maximum resolution of 3840x2160@144 Hz
* Support for DisplayPort 1.4 version.

- 1 x HDMI port, supporting a maximum resolution of 4096x2160@60 Hz
* Support for HDMI 2.1 version and HDCP 2.3.
** Support for native HDMI 2.1 TMDS compatible ports.

(Graphics specifications may vary depending on CPU support.)

Expansion slots

1 x PCI Express x16 slot (PCIEX16), integrated in the CPU:
- AMD Ryzen™ 7000 Series Processors/ Ryzen™ 9000 Series Processors support PCIe 4.0 x16 mode
- AMD Ryzen™ 8000 Series-Phoenix 1 Processors support PCIe 4.0 x8 mode
- AMD Ryzen™ 8000 Series-Phoenix 2 Processors support PCIe 4.0 x4 mode
* The PCIEX16 slot can only support a graphics card or an NVMe SSD. If only one graphics card is to be installed, be sure to install it in the PCIEX16 slot.
2 x PCI Express x16 slots (PCIEX1_1/PCIEX1_2), integrated in the CPU, supporting PCIe 3.0 and running at x1
* The PCIEX1_1 and PCIEX1_2 slots become unavailable when an AMD Ryzen™ 8000 Series-Phoenix 2 processor is used.
1 x PCI Express x16 slot (PCIEX1_3), integrated in the Chipset, supporting PCIe 3.0 and running at x1

Storage

1 x M.2 connector (M2A_CPU), integrated in the CPU, supporting Socket 3, M key, type 25110/22110/2580/2280 SSDs:
- AMD Ryzen™ 7000 Series Processors/ Ryzen™ 9000 Series Processors support PCIe 5.0 x4/x2 SSDs
- AMD Ryzen™ 8000 Series-Phoenix 1 Processors support PCIe 4.0 x4/x2 SSDs
- AMD Ryzen™ 8000 Series-Phoenix 2 Processors support PCIe 4.0 x4/x2 SSDs

1 x M.2 connector (M2P_CPU), integrated in the CPU, supporting Socket 3, M key, type 22110/2280 SSDs:
- AMD Ryzen™ 7000 Series Processors/ Ryzen™ 9000 Series Processors support PCIe 4.0 x2 SSDs
- AMD Ryzen™ 8000 Series-Phoenix 1 Processors support PCIe 4.0 x2 SSDs
- AMD Ryzen™ 8000 Series-Phoenix 2 Processors support PCIe 4.0 x2 SSDs

1 x M.2 connector (M2C_SB), integrated in the Chipset, supporting Socket 3, M key, type 22110/2280 PCIe 4.0 x4/x2 SSD support)
4 x SATA 6Gb/s connectors
RAID 0, RAID 1, and RAID 10 support for NVMe SSD storage devices
RAID 0, RAID 1, and RAID 10 support for SATA storage devices

USB

CPU:
- 2 x USB 3.2 Gen 2 Type-A ports (red) on the back panel
- 1 x USB Type-C® port on the back panel, with USB 3.2 Gen 1 support
CPU+USB 2.0 Hub:
- 4 x USB 2.0/1.1 ports on the back panel
Chipset:
- 2 x USB 3.2 Gen 1 ports available through the internal USB header
- 1 x USB Type-C® port with USB 3.2 Gen 1 support, available through the internal USB header
- 4 x USB 2.0/1.1 ports (2 ports on the back panel, 2 ports available through the internal USB header)
Chipset+USB 2.0 Hub:
- 4 x USB 2.0/1.1 ports available through the internal USB headers

Internal I/O

1 x 24-pin ATX main power connector
1 x 8-pin ATX 12V power connector
1 x CPU fan header
1 x CPU fan/water cooling pump header
2 x system fan headers
1 x system fan/water cooling pump header
3 x addressable RGB Gen2 LED strip headers
1 x RGB LED strip header
3 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 Type-C® header, with USB 3.2 Gen 1 support
1 x USB 3.2 Gen 1 header
3 x USB 2.0/1.1 headers
1 x Trusted Platform Module header (For the GC-TPM2.0 SPI/GC-TPM2.0 SPI 2.0/GC-TPM2.0 SPI V2 module only)
1 x Q-Flash Plus button
1 x serial port header
1 x Clear CMOS jumper

Rear I/O

1 x DisplayPort
1 x HDMI port
1 x PS/2 keyboard/mouse port
2 x SMA antenna connectors (2T2R)
1 x USB Type-C® port, with USB 3.2 Gen 1 support
2 x USB 3.2 Gen 2 Type-A ports (red)
6 x USB 2.0/1.1 ports
1 x RJ-45 port
3 x audio jacks

Wireless

Realtek® RTL8851 WIFI 6 module
- WIFI a, b, g, n, ac, ax, supporting 2.4/5/6 GHz carrier frequency bands
- Support for 11ax wireless standard
(Actual data rate may vary depending on environment and equipment.)

Audio

Realtek® Audio CODEC
ALC897
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.

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