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Intel LGA1851 motherboards use the 800-series chipsets and support Core Ultra 200S desktop processors, including Core Ultra 200S Plus with the required BIOS support. For CPU overclocking, choose Z890; B860 is the mainstream tier with memory overclocking, while H810 is the entry tier without overclocking. The best board for you depends on its exact expansion slots, storage layout, power delivery, networking and rear I/O—not just its chipset name.
What are Intel 1851 motherboards?
“Intel 1851” refers to motherboards with the LGA1851 CPU socket. They are designed for Intel Core Ultra 200S desktop processors, codenamed Arrow Lake-S, and use an Intel 800-series chipset. Intel launched the processors on October 10, 2024; systems became available on October 24, 2024.
A compatible socket is necessary, but it is not the only check: confirm that the motherboard’s CPU-support list includes your exact processor and that its BIOS version supports it. The chipset sets broad platform capabilities, while the board maker decides how to implement slots, ports, networking and other features.
How do Z890, B860 and H810 differ?
The main chipset distinction is overclocking support. Intel lists IA, BCLK and memory overclocking for Z890, memory overclocking for B860, and no overclocking support for H810. ASUS likewise identifies Z890 as the 800-series option for CPU overclocking.
#1 Best Overall
- Ready for Advanced AI PCs: Designed for the future of AI computing, with the power and connectivity needed for demanding AI applications
- Intel LGA 1851 Socket: Ready for Intel Core Ultra Processors (series 2)
- Exclusive AI: AI Cooling II and AI Networking II to simplify setup and improve performance
- Robust Power Solution: 16+1+2+1 80A DrMOS power stages with ProCool power connectors, 8-layer PCB, alloy chokes and durable capacitors for stable power delivery
- Optimized Thermal Design: Large VRM heatsinks, M.2 and PCH heatsinks, hybrid fan headers and Fan Xpert 4 with AI Cooling II
| Chipset | Overclocking listed | What to expect |
|---|---|---|
| Z890 | IA, BCLK and memory (Intel) | Enthusiast tier. ASUS describes up to 20 CPU PCIe 5.0 lanes on its Z890 implementation; check the individual board’s slot layout. |
| B860 | Memory (Intel) | Mainstream tier. ASUS says each of its B860 motherboards includes a PCIe 5.0 M.2 slot; its range includes ATX, microATX and Mini-ITX models. |
| H810 | None (Intel) | Entry tier. Check the specific board’s expansion slots, networking and power delivery before buying. |
The lane count and M.2 statement above describe ASUS’s cited implementations, not a guarantee that every board with that chipset has the same layout. For all three chipsets, read the model’s specifications for shared lanes and which connectors become unavailable when other slots or ports are in use.
Which features should you compare before buying?
Two boards using the same chipset can differ substantially. Compare the specification page and manual for the exact model, particularly if you have a graphics card, several drives, a high-power CPU or a specific case size in mind.
Rank #2
- Ready for Advanced AI PCs: Designed for the future of AI computing, with the power and connectivity needed for demanding AI applications
- Intel LGA 1851 Socket: Ready for Intel Core Ultra Processors (series 2)
- Exclusive AI Technologies: ASUS AI Advisor, ASUS-exclusive AI Overclocking, AI Cooling II, and AI Networking II to simplify setup and improve performance
- Exclusive Overclocking & Memory Technologies: NitroPath DRAM Technology, NPU Boost, DIMM Fit, DIMM Flex and AEMP III to simplify setup and improve performance
- Robust Power Solution: 22(110A)+2(90A)+1(90A)+2(80A) power stages with ProCool II power connectors, MicroFine alloy chokes and premium metallic capacitors
- CPU and memory tuning: Match the chipset’s overclocking capabilities to whether you plan to tune the CPU, memory, both or neither.
- Power delivery and cooling: Check the board’s VRM design and heatsinks against your processor and intended workload. Confirm that the CPU cooler fits the socket and your case.
- Graphics and storage: Look for the number and generation of PCIe slots and M.2 connectors you need. Check the manual for lane sharing and any connector restrictions. PCIe 5.0 storage is common on the platform, but its availability and layout depend on the model.
- Memory: These boards are DDR5-oriented. Verify supported memory types and speeds in the board’s list; ASUS highlights CUDIMM DDR5 support among its B860 features, but support should be confirmed for the specific model and memory kit.
- Connectivity: Compare USB4 or Thunderbolt support, Wi-Fi generation, wired LAN speed and the number and types of rear USB ports. These are board-level choices, not chipset-wide guarantees.
- Build and recovery: Choose ATX, microATX or Mini-ITX to match your case, and check whether the board has BIOS flashback if you want a way to update firmware without relying on a supported CPU.
Which Z890 and B860 motherboard families are available?
ASUS lists Z890 boards in its ROG Maximus, ROG Strix, TUF Gaming, Prime and ProArt families. Its B860 announcement covers ROG Strix, TUF Gaming and Prime models. ASUS also named the ROG Maximus Z890 Hero BTF as a Z890 addition. Those family names indicate product lines, not a tested ranking; compare individual board specifications and prices in your region.
One specifically named option is MSI’s MAG Z890 TOMAHAWK WIFI II. MSI lists PCIe 5.0, Thunderbolt 4 Type-C, 5G LAN, Wi-Fi 7 and DDR5 for this model. Treat those as features of this board, not of every Z890 motherboard, and check its specification page for the exact slot and port configuration.
Rank #3
- Ready for Advanced AI PCs: Designed for the future of AI computing, with the power and connectivity needed for demanding AI applications
- Intel LGA 1851 Socket: Ready for Intel Core Ultra processors (Series 2)
- Exclusive AI Technologies: NPU Boost, ASUS AI Advisor, ASUS-exclusive AI Overclocking, AI Cooling II, AI Networking II
- Robust Power Solution: 16(90A)+2(90A)+1(90A)+2(80A) power stages with ProCool II power connectors, MicroFine alloy chokes and premium metallic capacitors
- Optimized Thermal Design: Massive heatsinks with integrated I/O cover, high-conductivity thermal pads, and connected with an L-shaped heatpipe
Do LGA1851 boards support Core Ultra 200S Plus?
Yes, subject to the exact board and BIOS version. On March 23, 2026, ASUS announced full BIOS support for Core Ultra 200S Plus processors across its W880, Z890, Q870, B860 and H810 boards. MSI also says its existing 800-series boards, including Z890, remain compatible. These announcements do not establish that every board ships with the required BIOS already installed.
- Find the exact motherboard model and revision printed on the board or box.
- Open the manufacturer’s CPU-support list for that model and confirm the processor is listed.
- Check the minimum BIOS version shown for that CPU against the BIOS installed on the board, if known.
- If an update is needed, follow the board maker’s instructions. Confirm whether the model supports BIOS flashback before assuming you can update it without an already supported processor.
How should you choose the right board?
Start with the processor and case, then shortlist boards by the connections and expansion you actually need. Use the chipset as a filter for tuning features, not as a proxy for overall quality or value.
Quick Recap
- Choose the chipset: Select Z890 if CPU overclocking is required; consider B860 for memory tuning without the listed Z890 CPU-overclocking capabilities; consider H810 if its feature set meets your needs and you do not need overclocking.
- Map your components: Count your graphics cards, M.2 drives, SATA devices, USB accessories and network requirements. Use the manual to identify slot sharing and port restrictions.
- Check fit and cooling: Match the board’s form factor to the case and confirm cooler clearance and power delivery suit your processor.
- Confirm firmware support: Verify the exact CPU-support list and BIOS requirement, especially for Core Ultra 200S Plus.
- Compare complete models: Check rear I/O, wired LAN, Wi-Fi, USB4 or Thunderbolt, BIOS flashback and price in your market. A higher chipset tier does not automatically provide the particular port or layout you need.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
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