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Green micro-ATX board with black heatsinks and silver I/O shield

GIGABYTE

GIGABYTE B660M GAMING X AX DDR4 rev 1.1 Intel motherboard

SKU CH-YG9C-DA0A7

Micro-ATX board for 12th and 13th Gen Intel CPUs with DDR4, dual PCIe 4.0 M.2 slots, 2.5GbE LAN, Wi-Fi 6E and Bluetooth 5.2

  • CPU Socket TypeLGA 1700
  • CPU TypeSupports 13th / 12th Gen Intel Core, Pentium Gold, Celeron P
  • ChipsetIntel B660
  • Onboard Video ChipsetSupported only by CPU with integrated graphic
  • Number of Memory Slots4x288pin (DDR4)
  • Memory StandardDDR4 4400(OC) / 4300(OC)/4266(OC) / 4133(OC) / 4000(OC) / 38
  • Supports 12th and 13th Gen Intel Core processors via LGA 1700 socket
  • Four DDR4 DIMM slots deliver up to 128 GB dual-channel memory
  • Dual M.2 slots with PCIe 4.0 x4 provide fast NVME storage expansion
  • 5 GbE LAN plus Wi-Fi 6E and Bluetooth 5.2 ensure high-speed connectivity
  • 8+1+1 hybrid digital VRM with heatsinks maintains stable power delivery

B660M Gaming X AX DDR4 rev 1.1

This micro-ATX motherboard uses the Intel B660 chipset and LGA 1700 socket for 12th and 13th Gen Core, Pentium Gold and Celeron processors. It targets builders who want a compact board with Wi-Fi 6E, 2.5GbE LAN and dual M.2 slots for NVME SSDs. Four DDR4 DIMM slots support up to 128 GB in dual-channel mode.

Power delivery and connectivity

An 8+1+1 hybrid digital VRM with premium chokes and capacitors feeds the CPU through an 8-pin solid-pin connector. Fully covered VRM heatsinks and an M.2 thermal guard manage heat. Rear I/O includes USB 3.2 Gen2 Type-C, HDMI 2.1, Intel Wi-Fi 6E AX211 with Bluetooth 5.2, 2.5GbE LAN and 7.1-channel audio with noise guard.

Compatibility checklist

Verify your CPU has integrated graphics if you plan to use the HDMI port. Ensure the case fits micro-ATX and has clearance for the VRM heatsink assembly. Confirm the power supply provides an 8-pin CPU connector. Check that your DDR4 modules match the board's validated speeds up to 4400 OC.

Highlights

  • Supports 12th and 13th Gen Intel Core processors via LGA 1700 socket
  • Four DDR4 DIMM slots deliver up to 128 GB dual-channel memory
  • Dual M.2 slots with PCIe 4.0 x4 provide fast NVME storage expansion
  • 5 GbE LAN plus Wi-Fi 6E and Bluetooth 5.2 ensure high-speed connectivity
  • 8+1+1 hybrid digital VRM with heatsinks maintains stable power delivery

Specifications

BrandGIGABYTE
ModelB660M GAMING X AX DDR4 (rev. 1.1)
CPU Socket TypeLGA 1700
CPU TypeSupports 13th / 12th Gen Intel Core, Pentium Gold, Celeron Processors
ChipsetIntel B660
Onboard Video ChipsetSupported only by CPU with integrated graphic
Number of Memory Slots4x288pin (DDR4)
Memory StandardDDR4 4400(OC) / 4300(OC)/4266(OC) / 4133(OC) / 4000(OC) / 3866(OC) / 3800(OC) / 3733(OC) / 3666(OC) / 3600(OC) / 3466(OC) / 3400(OC) / 3333(OC) / 3300(OC) / 3200 / 3000 / 2933 / 2666 / 2400 / 2133
Maximum Memory Supported128GB
Channel SupportedDual Channel
PCI Express 4.0 x161 x PCI Express 4.0 x16
* For optimum performance, if only one PCI Express graphics card is to be installed, be sure to install it in the PCIEX16 slot.
PCI Express 3.0 x161 x PCI Express 3.0 x16
* Running at x4.
Serial ATA (SATA)4 x SATA 6Gb/s
M.2CPU:
1 x M.2 connector (Socket 3, M key, type 2260/2280 PCIe 4.0 x4/x2 SSD support) (M2A_CPU)
Chipset:
1 x M.2 connector (Socket 3, M key, type 2260/2280/22110 PCIe 4.0 x4/x2 SSD support) (M2P_SB)
Intel Optane ReadyIntel Optane Memory Ready
* System acceleration with Intel Optane Memory can only be enabled on the M.2 connectors supported by the Chipset.
SATA RAID0/1/5/10
Audio Channels7.1 Channels
Max LAN Speed2.5Gbps
Wireless LANIntel Wi-Fi 6E AX211
WIFI a/b/g/n/ac/ax
BluetoothBluetooth 5.2
Back I/O Ports3 x USB 3.2 Gen 1 ports
5 x USB 2.0/1.1 ports
2 x SMA antenna connectors (2T2R)
1 x HDMI 2.1 port
1 x DisplayPort
1 x RJ-45 port
3 x audio jacks
Onboard USB1 x USB Type-C header, with USB 3.2 Gen 2 support
1 x USB 3.2 Gen 1 header
2 x USB 2.0/1.1 headers
Other Connectors1 x CPU fan header
3 x system fan headers
2 x addressable LED strip headers
2 x RGB LED strip headers
1 x front panel header
1 x front panel audio header
1 x S/PDIF Out header
2 x Thunderbolt add-in card connectors
1 x Trusted Platform Module header (For the GC-TPM2.0 SPI/GC-TPM2.0 SPI 2.0 module only)
1 x serial port header
1 x reset button
1 x Q-Flash Plus button
1 x reset jumper
1 x Clear CMOS jumper
* All fan headers are subject to support AIO_Pump, Pump and high performance fan with the capability of delivering up to 2A/12V @ 24W.
Windows 11Ready
Form FactorMicro ATX
LED LightingRGB
Dimensions (W x L)9.6" x 9.6"
Power Pin1 x 24-pin ATX main power connector
1 x 8-pin ATX 12V power connector

Questions about this item

What PCIe version does the primary M.2 slot use, and what speed does that cap the drive at?

The CPU-connected M2A_CPU slot runs PCIe 4.0 x4, so a compatible NVME SSD is limited to PCIe 4.0 x4 throughput.

What clearance does the VRM heatsink and M.2 Thermal Guard need for a CPU cooler?

The board uses a fully covered thermal design with high-coverage VRM MOSFET heatsinks and an M.2 Thermal Guard; allow enough height for your cooler to clear those components.

How do I update the BIOS with Q-Flash Plus, and which step is commonly missed?

Place the BIOS file on a FAT32 USB drive, plug it into the dedicated Q-Flash Plus port, press the Q-Flash Plus button with system power off but the PSU switched on; the step often missed is keeping the PSU on while the board is otherwise unpowered.

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