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Rectangular green server motherboard with silver sockets and black expansion slots

GIGABYTE

GIGABYTE MZ33-AR1 server motherboard SP5 EPYC 9000 12-channel DDR5 24 DIMM 10GbE E-ATX

SKU CH-0SXF-XZVBT MPN MZ33-AR1

Single-socket SP5 board with 12-channel DDR5, 24 DIMM slots, 10GbE LAN, 16 SATA ports and four PCIe 5.0 x16 slots

  • CPU Socket TypeSocket SP5
  • CPU TypeAMD EPYC™ 9005/9004 Series Processors
  • Number of Processor Support1
  • Memory Slots24
  • Memory StandardDDR5-4800/5200 MT/s (1DPC), 3600/4000/4400 MT/s (2DPC)
  • Channel Supported12-Channel

Model MZ33-AR1

  • MBD-H13SSL-N-O
  • MBD-H13SSL-NT-O
  • MZ33-AR0
  • MZ33-AR1

Struck-through versions exist but are not stocked here.

  • Supports AMD EPYC 9005/9004 processors for up to 192 cores
  • 12-channel DDR5 memory architecture with 24 DIMM slots for massive capacity
  • Dual 10GbE LAN ports via Broadcom BCM57416 for high-speed networking
  • Four PCIe 5.0 x16 expansion slots for GPU and accelerator density
  • Sixteen SATA 6.0Gb/s ports plus MCIO connectors for flexible storage configurations

Single-socket EPYC 9000 platform

The GIGABYTE MZ33-AR1 is a single-socket server motherboard built for the AMD EPYC 9004 and 9005 series on the SP5 socket. It targets data-centre deployments that need high core counts and large memory capacity in a single node. The board supports up to 192 cores and 12-channel DDR5 with 24 DIMM slots. It is not for buyers who want a dual-socket platform or a workstation form factor.

12-channel DDR5 and PCIe 5.0 expansion

Compared with earlier SP3-based boards, this model moves to 12-channel DDR5-4800/5200 MT/s at 1 DPC and adds four PCIe 5.0 x16 slots plus six MCIO 8i connectors for Gen5 x8 or SATA. The jump is worth it when workloads need the extra memory bandwidth and the 160 PCIe lanes the processor provides. It is not for systems that can operate within eight-channel memory or PCIe 4.0 slot limits.

E-ATX layout with dedicated management

The E-ATX board fits standard server chassis and uses a single 24-pin ATX plus multiple 8-pin CPU power connectors. Installers should populate all 24 DIMM slots in the correct channel order to enable 12-channel mode. The ASPEED AST2600 BMC provides dedicated management LAN and IPMI access. It is not for builds that lack BMC-aware infrastructure or that use consumer power supplies without the required EPS connectors.

Highlights

  • Supports AMD EPYC 9005/9004 processors for up to 192 cores
  • 12-channel DDR5 memory architecture with 24 DIMM slots for massive capacity
  • Dual 10GbE LAN ports via Broadcom BCM57416 for high-speed networking
  • Four PCIe 5.0 x16 expansion slots for GPU and accelerator density
  • Sixteen SATA 6.0Gb/s ports plus MCIO connectors for flexible storage configurations

Specifications

BrandGIGABYTE
ModelMZ33-AR1
CPU Socket TypeSocket SP5
CPU TypeAMD EPYC™ 9005/9004 Series Processors
Number of Processor Support1
Memory Slots24
Memory StandardDDR5-4800/5200 MT/s (1DPC), 3600/4000/4400 MT/s (2DPC)
Channel Supported12-Channel
ECC SupportedYes
RegisteredYes
PCI Express 5.0 x164
Other Slots6 x MCIO 8i connectors
SATA16 x SATA 6.0Gb/s
M.21 x M.2 (Support PCIe 4.0 x4)
Onboard Video ChipsetASPEED® AST2600
LAN ChipsetBroadcom® BCM57416
LAN Speed10Gbps
Max LAN Speed10Gbps
Back I/O Ports2 x USB 3.2 Gen1 ports (Type-A), 1 x VGA port, 1 x COM port, 2 x RJ45 ports, 1 x MLAN port, 1 x ID button with LED
COM1
Video Ports1 x VGA port
RJ452 x RJ45
USB 3.0USB 3.2 Gen1 x2 Header
USB 3.22 x USB 3.2 Gen1
1 x USB 3.2 Gen1 x2 header
Onboard USB1 x USB 2.0 header
1 x USB 3.2 Gen1 x2 header
Other Connectors1 x MLAN port
1 x ID button with LED
Form FactorExtended ATX
Dimensions (W x L)304.8 x 330.2 mm
Contains Embedded BatteryNo
Shipping weight1.95 kg
Package size406 × 361 × 76 mm

Other versions of this model

1 more in the same range

Same family, different memory, cooler or clock — compare before you commit.

Questions about this item

What chassis size and mounting pattern does the E-ATX MZ33-AR1 require?

The board uses the E-ATX form factor, so the chassis must accept an E-ATX motherboard with the corresponding mounting-hole layout.

How is the SP5 processor installed and what step is often missed?

Lift the socket lever, align the CPU triangle with the socket marker, place the processor gently, close the frame and torque the captive screws in the numbered sequence; the step most often missed is following the exact tightening order.

Which memory modules will need replacing if speeds are upgraded later?

The 24 DDR5 RDIMM slots support 4800 or 5200 MT/s at 1DPC and 3600, 4000 or 4400 MT/s at 2DPC; moving to a higher speed grade means swapping all installed modules for ones rated at the new target.

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