Hardware Spec Index

Orbita MB-7855 Prime Z790 ATX Wi-Fi 7 Motherboard

Motherboards · Orbita · SKU MB7855-PRIME · Released 2024 · Updated 2026-10-24

Key facts

Benchmark index4,751 (Motherboards scale)
Category rank#44,153
Street price$499
Power45 W
Performance per dollar9.52
Released2024

Specifications

BrandOrbita
ModelOrbita MB-7855 Prime
SocketLGA1700
ChipsetZ790
Form factorATX
Memory4× DDR5 DIMM, up to 256 GB
Max memory speedDDR5-7200+ (OC)
Primary x16 slotPCIe 5.0 x16
M.2 slots5 total, 1× PCIe 5.0 x4
Rear USB-C1× USB 3.2 Gen 2x2 20Gbps (Type-C)
Ethernet5GbE
WirelessWi-Fi 7 (802.11be, 320 MHz) + Bluetooth 5.4
OverclockingCPU + memory
VRM21+2+2 phases, 80 A stages
BIOSDual UEFI, BIOS flashback button

Related guides

PCIe Lanes ExplainedM.2 SSD Sizes and KeysIntel LGA1700 SocketDDR5 Memory ExplainedPCIe 5.0 ExplainedWi-Fi 7 (802.11be) Explained

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Cite this page: Hardware Spec Index, “Orbita MB-7855 Prime Z790 ATX Wi-Fi 7 Motherboard”, https://vextor7.com/item/7327110 (accessed 2026-10-24).