Overview

The Gigabyte B365 HD3 is an ATX motherboard built around the Intel B365 chipset, supporting 8th and 9th generation Core processors on the LGA1151 socket. It accommodates up to 64GB of DDR4 memory and provides a single PCIe 3.0 x16 slot, six SATA 6Gb/s ports, and one M.2 slot (PCIe Gen3 x4 & SATA). Onboard Realtek ALC887 audio and Realtek GbE LAN deliver solid fundamentals for everyday computing and entry-level gaming.
Priced around ¥11,000 (~$75 USD), this board targets budget-conscious builders who prioritize stability over cutting-edge features. While overclocking is not supported, the B365 chipset offers broad compatibility and even retains official Windows 7 support—a rare advantage for legacy system builds.

Compatibility Guide

The LGA1151 socket works with Intel Core i7-9700K, Core i5-9400F, and other 8th/9th Gen CPUs. Memory support includes four DDR4 DIMM slots for non-ECC unbuffered modules up to DDR4-2666, with a maximum capacity of 64GB. The ATX form factor (305mm × 215mm) fits standard mid-tower cases.
Expansion consists of one PCIe 3.0 x16, two PCIe 3.0 x1, and two legacy PCI slots. Single GPU setups are straightforward, but dual-GPU configurations are not possible. Storage options include six SATA 6Gb/s ports and one M.2 slot (PCIe Gen3 x4 & SATA). Note that the M.2 slot shares bandwidth with certain SATA ports when operating in SATA mode—consult the manual before installation.
Power delivery uses a 24-pin ATX and 8-pin EPS connector. A 300W PSU is sufficient for CPU-only builds; adding a mid-range GPU like an RTX 3060 raises the recommendation to 500W or higher.

Product Info

Launched in early 2019, the Gigabyte B365 HD3 sits in the entry-to-mid-range tier, offering a no-frills feature set at a very competitive price. The standard warranty is three years from Gigabyte. It remains widely available through major retailers and online stores.
The chipset itself draws minimal power, but the VRM section uses a 4+3 phase design. This handles Core i7-class CPUs well under normal loads, though sustained heavy workloads may cause VRM temperatures to climb. Adequate case airflow is recommended.

Best Use Cases

  • First-time PC builders: Simple BIOS layout and straightforward installation make this an excellent starting point for budget-conscious newcomers.
  • Office and home PCs: For web browsing, document editing, and media playback, the B365 HD3 paired with integrated graphics is more than adequate.
  • Entry-level gaming rigs: Combine with a GTX 1650 or RX 6400 for playable 1080p gaming at low-to-medium settings.
  • Windows 7 holdouts: If you need official Windows 7 support, this board is one of the few modern options that still provides it.
    This board is not suitable for users who need PCIe 4.0/5.0, multiple M.2 SSDs, or dual-GPU setups.

Things to Consider

The B365 HD3 lacks PCIe 4.0 support, so high-speed NVMe SSDs like the Samsung 990 Pro will run at PCIe 3.0 speeds. While this doesn't cripple gaming performance, it limits future storage upgrade potential. The single M.2 slot may also be a constraint for users wanting separate OS and game drives.
VRM cooling is modest; pairing this board with a Core i9-9900K for prolonged all-core workloads could lead to thermal throttling. A Z390 board with beefier VRMs would be a safer choice for such CPUs.
Compared to rivals like the ASRock B365 Pro4 or MSI B365M PRO-VH, the Gigabyte B365 HD3 is often the cheapest option, making it ideal for ultra-budget builds where every dollar counts.

FAQ

Q: Can I use a Core i7-9700K on this motherboard? Can I overclock?
A: Yes, the CPU is supported, but the B365 chipset does not allow overclocking. The CPU will run at its stock frequencies only.
Q: If I install an NVMe SSD in the M.2 slot, will any SATA ports be disabled?
A: In NVMe mode, the M.2 slot does not disable any SATA ports. In SATA mode, it may share bandwidth with SATA3 0 or 1. Check the manual's storage configuration section for details.
Q: Can I use DDR4-3200 memory?
A: Officially, the board supports up to DDR4-2666. Higher-speed modules will downclock to 2666 MHz, and XMP profiles are not supported.