This article covers GIGABYTE B850 AORUS STEALTH ICE ATXマザーボード ホワイト B850 A STEALTH ICE MB6787.

Overview

The GIGABYTE B850 AORUS STEALTH ICE is an ATX motherboard built for AMD Socket AM5 processors, including the latest Ryzen 9000, 8000, and 7000 series. What sets it apart is its all-white PCB and heatsinks paired with a rear-connector layout (Project Stealth), which routes virtually all cables to the back of the board. The result is an exceptionally clean front view with no visible wires??a dream for white-theme PC builders. Under the hood, a 14+2+2-phase digital VRM delivers stable power to high-core-count Ryzen CPUs, while four M.2 slots (two of which support PCIe 5.0) provide ample high-speed storage options. Networking is covered by Wi-Fi 7 and a 5GbE LAN port, and the rear I/O includes a USB 10Gbps Type-C port. This motherboard targets the mid-to-upper mainstream segment, balancing modern features with a stylish aesthetic. The AORUS STEALTH ICE also includes M.2 Thermal Guard L heatsinks and a large VRM heatsink to keep temperatures in check under extended loads. With DDR5 support up to 256GB, it offers enough memory capacity for content creation and heavy multitasking.

Compatibility Guide

Socket AM5 is the only CPU socket option, supporting Ryzen 9000, 8000, and 7000 series chips. You can pair it with anything from a Ryzen 5 7600 to a Ryzen 9 9950X. Memory requires DDR5 DIMMs (non-ECC UDIMMs recommended), and four slots allow up to 256GB. Both XMP and EXPO profiles are supported for easy overclocking. Form factor is standard ATX (305 x 244 mm). While the board fits in any ATX case, the rear-connector design is best utilized with a case that has cutouts for the back-side connectors, such as GIGABYTE's Project Stealth cases or other recent models like the Corsair 3500X. If you use a standard ATX case, you can still mount the board, but the cable management advantage disappears. The primary PCIe slot is PCIe 5.0 x16 (CPU-attached), with a second PCIe 4.0 x4 slot from the chipset. Storage includes two PCIe 5.0 M.2 slots, two PCIe 4.0 M.2 slots, and two SATA 6Gbps ports. Power connectors are a 24-pin main, an 8-pin CPU, and a 4-pin CPU auxiliary. For a clean white build, white-sleeved PSU cables are strongly recommended.

Product Info

The B850 AORUS STEALTH ICE is a mid-high range motherboard built on the AMD B850 chipset. Its release date was mid-2025, and the street price in Japan is around ¥45,253 (as of June 2026 on). Key specs include a 14+2+2-phase digital VRM, four DDR5 DIMM slots (max 256GB), one PCIe 5.0 x16 slot, four M.2 slots (two with PCIe 5.0), Wi-Fi 7 + Bluetooth 5.4, 5GbE LAN, and 7.1-channel HD Audio. The board's white surface creates a subtle, reflective backdrop for RGB lighting, which can be controlled via GIGABYTE's RGB Fusion 2.0 software. The warranty period is the standard three years for Japanese retail units.

Best Use Cases

White-themed PC builders: If you want a pristine all-white build, this motherboard is one of the best foundations available. The white PCB and heatsinks, combined with rear cable routing, make for an extraordinarily clean look when paired with a glass-sided case. However, you must commit to white components across the entire system??GPU, cooler, memory, and PSU cables??to avoid a mismatched appearance. High-end Ryzen users (Ryzen 7 / 9) for gaming and creation: The 14+2+2-phase VRM can handle Ryzen 9 9950X or Ryzen 7 9800X3D without issue. With PCIe 5.0 GPU and PCIe 5.0 M.2 support, you get the full bandwidth for the latest graphics cards and NVMe drives. This combination suits gamers who also stream or edit video, as well as heavy multi-threaded workloads. * Balanced mid-range builders on a budget: Compared to X870/X870E boards, B850 offers a lower price point while retaining PCIe 5.0 support for both GPU and storage. It's a solid pick if you want future-proofing without overspending on a chipset you might not fully utilize (e.g., if you don't need USB4 or multiple high-speed devices). ## Alternatives
A direct competitor is the ASUS ROG STRIX B850-A GAMING WIFI, which also uses white-themed heatsinks but has a standard black PCB and lacks rear connectors. ASUS tends to offer more refined BIOS features and fan control, so power users who prioritize overclocking tools may prefer it. The GIGABYTE board wins on aesthetics and cable management. Another alternative is the MSI MAG B850 TOMAHAWK MAX WIFI. It delivers similar VRM and M.2 specs but comes in a conventional black design. If you prefer a no-nonsense black board and don't care about white styling or back-connectors, the TOMAHAWK may offer slightly better value. The GIGABYTE STEALTH ICE justifies its premium with a unique look and cleaner wiring.

Things to Consider

  • You need a compatible case for rear connectors: The board's main selling point??clean cabling??relies on a case with cutouts that align with the back-side connectors. Without a suitable case, you lose the visual advantage and ma

Product Disclosure (Amazon)

  • Manufacturer: GIGABYTE
  • Seller: Amazon.co.jp
  • Fulfilled by: Amazon.co.jp
  • ASIN: B0FBMKYYTJ
  • Note: This article covers a manufacturer-made product based on Amazon listing details.