GIGABYTE B550M K AMD AM4 Micro-ATX Motherboard, Supports Ryzen 5000/4000/3000 Series Processors, DDR4, 3+3 Power Phase, 2X M.2, PCIe 4.0, USB 3.2 Gen 1, GbE LAN, Q-Flash vs SHANGZHAOYUAN B85M PRO LGA 1150 Motherboard for Intel 4th Gen Core i7 i5 i3/Pentium/Celeron Series Processors (Micro-ATX, DDR3, PCIe 3.0, NVME M.2, SATA 3.0, VGA/DVI/HDMI-Compatible, Gigabit LAN)
Updated June 2026 — GIGABYTE B550M K AMD AM4 Micro-ATX Motherboard, Supports Ryzen 5000/4000/3000 Series Processors, DDR4, 3+3 Power Phase, 2X M.2, PCIe 4.0, USB 3.2 Gen 1, GbE LAN, Q-Flash leads on processor compatibility and future-proofing.
The GIGABYTE B550M K offers superior performance, modern features, and better value at a lower price compared to the SHANGZHAOYUAN B85M PRO, making it the clear winner for most users.
Why GIGABYTE B550M K AMD AM4 Micro-ATX Motherboard, Supports Ryzen 5000/4000/3000 Series Processors, DDR4, 3+3 Power Phase, 2X M.2, PCIe 4.0, USB 3.2 Gen 1, GbE LAN, Q-Flash is better
Socket Compatibility
GIGABYTE B550M K supports modern AMD Ryzen 5000/4000/3000 series processors via AM4 socket, while SHANGZHAOYUAN B85M PRO is limited to older Intel 4th gen CPUs with LGA 1150 socket.
Memory Support
GIGABYTE B550M K supports DDR4 with XMP for higher speeds, whereas SHANGZHAOYUAN B85M PRO only supports slower DDR3 up to 1866MHz.
Storage Performance
GIGABYTE B550M K includes a PCIe 4.0 M.2 slot for faster SSD access, while SHANGZHAOYUAN B85M PRO has only a single M.2 slot supporting NVMe/SATA switching with PCIe 3.0.
Why SHANGZHAOYUAN B85M PRO LGA 1150 Motherboard for Intel 4th Gen Core i7 i5 i3/Pentium/Celeron Series Processors (Micro-ATX, DDR3, PCIe 3.0, NVME M.2, SATA 3.0, VGA/DVI/HDMI-Compatible, Gigabit LAN) is better
Legacy CPU Support
SHANGZHAOYUAN B85M PRO is compatible with Intel 4th generation Core i7/i5/i3, Pentium, and Celeron CPUs using LGA 1150 socket, which may be necessary for older systems.
Power Supply Requirements
SHANGZHAOYUAN B85M PRO specifies a minimum 500W power supply, which aligns well with mid-tier Intel platforms, though this is not a performance advantage.
Expansion Slots
SHANGZHAOYUAN B85M PRO includes two PCI slots and VGA/DVI/HDMI display outputs, offering more legacy expansion options than GIGABYTE B550M K.
Overall score
Specifications
| Spec | GIGABYTE B550M K AMD AM4 Micro-ATX Motherboard, Supports Ryzen 5000/4000/3000 Series Processors, DDR4, 3+3 Power Phase, 2X M.2, PCIe 4.0, USB 3.2 Gen 1, GbE LAN, Q-Flash | SHANGZHAOYUAN B85M PRO LGA 1150 Motherboard for Intel 4th Gen Core i7 i5 i3/Pentium/Celeron Series Processors (Micro-ATX, DDR3, PCIe 3.0, NVME M.2, SATA 3.0, VGA/DVI/HDMI-Compatible, Gigabit LAN) |
|---|---|---|
| Socket Type | AM4 | LGA 1150 |
| Supported CPU Series | AMD Ryzen 5000/4000/3000 | Intel 4th Gen Core i7/i5/i3, Pentium, Celeron |
| Memory Type | DDR4 | DDR3 |
| Max Memory Capacity | 64GB (4 DIMMs) | 32GB (4 DIMMs) |
| M.2 Slots | 2 (1x PCIe 4.0, 1x PCIe 3.0) | 1 (NVMe/SATA auto-switch) |
| PCIe Version | PCIe 4.0 x16 | PCIe 3.0 x16 |
| VRM Design | Digital 3+3 Power Phase | 4-Phase All-Solid-State |
| Price | $69.99 | $79.99 |
Dimension comparison
Socket Compatibility and Processor Support
GIGABYTE B550M K supports AMD Ryzen 5000, 4000, and 3000 series processors via the AM4 socket, while SHANGZHAOYUAN B85M PRO is designed for Intel 4th generation Core i7, i5, i3, Pentium, and Celeron CPUs using the LGA 1150 socket. This fundamental difference means the two motherboards are incompatible with each other’s processor families. The GIGABYTE model enables users to leverage modern AMD Ryzen chips with PCIe 4.0 support, whereas the SHANGZHAOYUAN board targets older Intel hardware from the Haswell era. Choosing between them depends entirely on your CPU choice—there is no overlap in supported processors.
Power Delivery and VRM Design
The GIGABYTE B550M K features a digital 3+3 power phase design with premium chokes and capacitors for steady power delivery, while the SHANGZHAOYUAN B85M PRO uses a 4-phase power supply with all-solid-state capacitors. Both boards emphasize stability, but the GIGABYTE’s dual 3+3 configuration suggests more refined voltage regulation for higher-end Ryzen processors. The SHANGZHAOYUAN specifies that at least a 500W power supply is required, aligning with its use case for mid-tier Intel CPUs. The GIGABYTE’s enhanced VRM design supports performance demands of newer AMD processors, offering better thermal and electrical resilience under load.
Memory and Storage Capabilities
The GIGABYTE B550M K supports DDR4 memory across four DIMMs with Extreme Memory Profile (XMP) support, enabling faster speeds than standard JEDEC. In contrast, the SHANGZHAOYUAN B85M PRO supports dual-channel DDR3 memory up to 32GB with frequencies of 1333, 1600, or 1866MHz. The GIGABYTE offers superior memory bandwidth potential due to DDR4 and XMP compatibility. On storage, the GIGABYTE includes two M.2 slots—one PCIe 4.0 and one PCIe 3.0—while the SHANGZHAOYUAN supports NVMe and SATA modes via a single M.2 slot with automatic switching. The GIGABYTE provides faster SSD access through PCIe 4.0, giving it a clear edge in storage performance.
Expansion and Connectivity Options
The GIGABYTE B550M K includes one Ultra Durable PCIe 4.0 x16 slot and four USB 3.2 Gen 1 ports, along with comprehensive connectivity including PCIe 4.0 M.2 and PCIe 3.0 M.2. The SHANGZHAOYUAN B85M PRO offers one PCIe x16 3.0 slot, one PCIe x1 2.0, two PCI slots, and three SATA 3.0 ports. It also supports VGA, DVI, and HDMI outputs for display output. While both provide multiple expansion options, the GIGABYTE’s PCIe 4.0 x16 slot allows for faster GPU performance, and its USB 3.2 Gen 1 ports offer faster data transfer than the SHANGZHAOYUAN’s unspecified USB version. The GIGABYTE’s interface suite is more future-ready and better suited for high-speed peripherals.
Thermal Management and Build Quality
The GIGABYTE B550M K features Advanced Thermal Armor with chipset heatsinks for improved heat dissipation, ensuring stable operation under sustained loads. The SHANGZHAOYUAN B85M PRO includes heat dissipation armor protection and an 8-layer PCB design to extend service life and enhance thermal performance. Both boards prioritize cooling and durability, but the GIGABYTE explicitly highlights its chipset heatsink integration as part of its design philosophy. The SHANGZHAOYUAN’s 8-layer PCB adds structural integrity, though it does not specify whether this applies to the entire board or just specific areas. The GIGABYTE’s thermal solution appears more targeted toward high-performance scenarios.
Price and Value Comparison
The GIGABYTE B550M K is priced at $69.99, while the SHANGZHAOYUAN B85M PRO costs $79.99—$10.00 more. This makes the GIGABYTE about 12.5% cheaper than its counterpart. Despite the price difference, the GIGABYTE offers significantly more advanced features: PCIe 4.0 support, DDR4 memory, and a modern AM4 socket. The SHANGZHAOYUAN’s higher price doesn’t reflect equivalent upgrades; instead, it serves older Intel platforms with DDR3 and PCIe 3.0. For users seeking current-generation performance and value, the GIGABYTE delivers more for less money.
Which should you buy?
Choose the GIGABYTE B550M K if you're building a system around an AMD Ryzen 5000, 4000, or 3000 series processor and want PCIe 4.0 support, DDR4 memory, and modern connectivity—all at $69.99. It outperforms the SHANGZHAOYUAN B85M PRO in every measurable category except legacy compatibility. The SHANGZHAOYUAN B85M PRO is only suitable for users committed to Intel 4th gen CPUs and DDR3 memory, and even then, it costs $10.00 more without offering meaningful advantages. Given the price gap and feature disparity, the GIGABYTE B550M K is the superior choice for nearly all modern builds.