This article covers ASRock Intel X299チップセット搭載 ATX マザーボード X299 Taichi CLX.

Overview

The ASRock X299 Taichi CLX is an ATX motherboard built around the Intel X299 chipset, featuring the LGA2066 socket. It supports Intel Core X-series processors from Skylake-X, Kaby Lake-X, and Cascade Lake-X families. With eight DDR4 memory slots and support for overclocked speeds up to 4200 MHz and beyond, this board is designed for high-end desktop (HEDT) workloads. A 13-phase digital VRM ensures stable power delivery even under heavy loads. This motherboard stands out with its aggressive Taichi design language, robust cooling solutions, and extensive connectivity. It offers four PCIe 3.0 x16 slots for multi-GPU setups, onboard Wi-Fi 6 (802.11ax), dual LAN (2.5GbE + Gigabit), USB 3.2 Gen2x2 Type-C, and three M.2 slots. The X299 Taichi CLX targets power users, content creators, and enthusiasts who need maximum CPU cores, memory bandwidth, and expansion options.

Compatibility Guide

The X299 Taichi CLX uses the LGA2066 socket, compatible with Intel Core i7/i9 X-series processors such as the Core i9-10980XE, i9-9980XE, and i7-7820X. Memory support is DDR4 only, with eight slots supporting up to 128 GB (non-ECC, unbuffered). Overclocking can push speeds beyond 4200 MHz. Form factor is standard ATX, fitting most ATX cases. Power delivery requires a 24-pin main connector plus an 8-pin and 4-pin CPU power. PCIe slot configuration depends on the CPU's lane count: 48-lane CPUs enable x16/x4/x16/x8, 44-lane CPUs give x16/x4/x16/x8, and 28-lane CPUs result in x16/x4/x8/x0. Storage includes 10 SATA 3 ports and three M.2 slots (two support SATA/PCIe 3.0 x4, one is PCIe 3.0 x4 only).

Product Info

Released in late 2019, the ASRock X299 Taichi CLX sits in the mid-to-high-end tier of the X299 motherboard lineup. It emphasizes overclocking capabilities and expansion flexibility. The original MSRP was around ¥45,000–¥50,000, but as of 2026, it can be found for approximately ¥36,000 on platforms like . The standard warranty is three years (region-dependent). Key specs include: 13-phase digital VRM, Intel Wi-Fi 6 (802.11ax), Dragon RTL8125AG 2.5GbE LAN, Intel I219V Gigabit LAN, USB 3.2 Gen2x2 Type-C (20 Gbps), 7.1-channel HD audio (ALC1220), and Polychrome SYNC RGB lighting control.

Best Use Cases

  • High-end gamers: Pair with a Core i9-10980XE for 4K gaming or high-refresh-rate setups. The four PCIe x16 slots allow multi-GPU configurations, though modern games rarely benefit from multiple GPUs. - Content creators and workstation users: Video editing, 3D rendering, and scientific simulations thrive on the many CPU cores and memory bandwidth. Eight memory slots and three M.2 slots provide ample room for fast storage and large RAM pools. - Enthusiasts and overclockers: The robust 13-phase VRM and extensive BIOS options make fine-tuning easy. This board is a great choice for those who enjoy pushing clock speeds to the limit. Who should NOT buy this board: - Mainstream PC builders: If you don't need an HEDT platform, a Z790 or B660 board with a Core i5/i7 will offer better value and lower power consumption. - Users seeking a quiet, low-power system: HEDT platforms consume significant power and generate heat, requiring beefy cooling and a high-wattage PSU.

Things to Consider

The X299 Taichi CLX is now several years old and lacks support for modern standards like PCIe 4.0/5.0 and DDR5 memory. The CPU options are limited to older X-series processors, which are still capable but can be expensive on the used market. The PCIe lane distribution depends heavily on the CPU; for full multi-GPU performance, a 48-lane CPU is necessary. Power supply requirements are high: a minimum of 850W is recommended for a full system with a high-end GPU and CPU. Additionally, cooling solutions must be compatible with the LGA2066 socket. If you are building a new system from scratch, consider whether a newer platform like Intel's X299 successor or AMD's Threadripper might offer better longevity and performance-per-watt. ## FAQ
Q: Can I use an Intel Core i9-13900K with this motherboard? A: No, the socket is LGA2066, which is incompatible with LGA1700 CPUs like the i9-13900K. Only Intel Core X-series processors (Skylake-X, Kaby Lake-X, Cascade Lake-X) are supported. Q: Does it support DDR5 memory? A: No, this motherboard only supports DDR4. DDR5 modules are physically incompatible. Q: Will an RTX 4090 bottleneck on this board? A: The PCIe 3.0 x16 slot may limit the RTX 4090's bandwidth slightly, but the performance difference is typically within a few percent in real-world gaming. However, the CPU itself may become a bottleneck depending on the workload. For maximum GPU performance, a newer platform with PCIe 4.0/5.0 is recommended.

Product Disclosure (Amazon)

  • Manufacturer: ASRock
  • ASIN: B07ZQKJXCG
  • Note: This article covers a manufacturer-made product based on Amazon listing details.