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Micro ATX motherboard, black PCB with silver heatsinks and white accents

GIGABYTE

GIGABYTE B660M GAMING AC DDR4 Intel motherboard

SKU CH-4A6J-05V01

Micro-ATX LGA 1700 board with dual-channel DDR4 up to 3200 MHz, 2.5 GbE LAN, Realtek 7.1 audio, two M.2 and four SATA ports

  • CPU socketLGA 1700
  • ChipsetIntel B660
  • Form factorMicro ATX
  • Memory slot count2 × 288pin (DDR4)
  • Supported memorySupport dual-channel DDR4 3200/3000/2933/2666/2400/2133 MHz
  • Max supported RAM64 GB
  • Supports 12th and 13th Gen Intel Core CPUs on LGA 1700 socket
  • Dual-channel DDR4 up to 3200 MHz with 64 GB maximum capacity
  • Realtek 7.1 channel audio chip and 2.5 GbE LAN for wired connectivity
  • PCIe 4.0 x16 slot plus two M.2 and four SATA 6 Gb/s ports for storage
  • Micro ATX form factor 9.6 x 8.1 inches with USB 3.2 Gen1 Type-C rear port

LGA 1700 Micro ATX DDR4 board

This motherboard uses the Intel B660 chipset and fits LGA 1700 processors in a Micro ATX layout. It provides two DDR4 DIMM slots with dual-channel support up to 64 GB. Integrated Realtek 7.1 audio and a 2.5 GbE LAN port handle sound and wired networking.

DDR4 memory limit defines the fit

Builders who want DDR4 memory and a compact board for 12th or 13th generation Intel CPUs will match this specification. Systems that require four DIMM slots, DDR5 memory or more than two M.2 sockets should choose a different platform.

Two DDR4 slots cap memory at 64 GB

The board offers only two 288-pin DDR4 slots, so the maximum installed capacity is 64 GB. This single constraint decides whether the platform suits your planned memory configuration.

How it compares

Measured against everything we stock in Motherboards for Intel CPUs, at today’s prices. Recalculated every night.

Price $172.99
Pricier than about 77% of the 2,965 comparable items (median $97.99).

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Specifications

Product
Brand nameGIGABYTE
Product lineGAMING
Model nameB660M GAMING AC
Processor
CPU socketLGA 1700
ChipsetIntel B660
Memory
Memory slot count2 × 288pin (DDR4)
Supported memorySupport dual-channel DDR4 3200/3000/2933/2666/2400/2133 MHz memory
Max supported RAM64 GB
Memory channelsDual Channel
Storage
SATA ports4 x SATA 6Gb/s
M.2 slots2 x M.2
Audio & video
Audio chipAudio chip Integrated Realtek 7.1 channel audio chip
Connectivity
Ethernet controllerNetwork card chip Onboard Realtek 2.5GbE network card
Ports & slots
PCIe 4.0 x16 slots1 x PCI Express 4.0 x16
PCIe x1 slots1 x PCI Express x1
Rear panel portsUSB (backplane) 1×USB3.2 Gen1 Type-C interface
3×USB3.2 Gen1 interface
2×USB2.0/1.1 interface
USB (built-in) 2×USB3.2 Gen1 interface
4×USB2.0/1.1 interface
Video interface 1×VGA interface, 1×HDMI interface, 1×DisplayPort interface
Power interface One 8-pin, one 24-pin power interface
Other interfaces 1×PS/2 common interface for keyboard and mouse, 1×RJ45 network interface, 2×antenna interface, 3×audio interface
Size & build
Form factorMicro ATX
Width and length9.6 in × 8.1 in

Questions about this item

What clearance does the 9.6" x 8.1" Micro ATX board need inside the case?

It fits any chassis with Micro ATX mounting holes and enough room for the 9.6 inch by 8.1 inch PCB plus the rear I/O shield.

Which power connectors must be seated before first boot?

Connect the 24 pin ATX cable and the 8 pin CPU cable; the board will not post if either is missing.

What is the largest DDR4 kit this board can accept?

Two 32 GB DDR4 modules for a total of 64 GB running in dual channel at up to 3200 MHz.

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