ASRock X299 Extreme4 ATX Motherboard vs ASRock Taichi Intel Z390 Motherboard (2026): Key Differences
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You are comparing the asrock intel x299 chip set atx motherboard vs motherboard options from ASRock. Both boards are built for high-end desktop performance and share the ATX form factor. The primary difference lies in their generation and target processors. The X299 Extreme4 supports Intel’s HEDT lineup, while the Z390 Taichi is designed for mainstream Core processors. This distinction affects socket type, memory channels, and PCIe lane availability. You need to match the board to your specific CPU tier.
Key differences
| Aspect | ASRock X299 Extreme4 ATX Motherboard | ASRock Taichi Intel Z390 Motherboard |
|---|---|---|
| Chipset | Intel X299 | Intel Z390 |
| CPU Socket | not listed | LGA1151 |
| Memory Type | not listed | DDR4 |
| PCIe Version | not listed | PCIe 3.0 |
| Weight | 3.31 pounds | 4.5 pounds |
Which one should you choose?
Choose ASRock X299 Extreme4 ATX Motherboard if
- You are building a system with an Intel Core X-series or Xeon W processor.
- You prefer a slightly lighter board for easier handling during installation.
- You need the specific connectivity options provided by the X299 platform.
Choose ASRock Taichi Intel Z390 Motherboard if
- You are using an 8th or 9th generation Intel Core processor.
- You require explicit support for dual-channel DDR4 memory configurations.
- You want a board with clearly defined PCIe 3.0 lane allocation for multiple GPUs.
Verdict: Choose the X299 Extreme4 if your project centers on high-end desktop CPUs. Select the Z390 Taichi if you are building around mainstream 8th or 9th Gen Intel Core processors. The correct choice depends entirely on your CPU selection.
X299 Extreme4 vs Z390 Taichi Specs
cpu socket compatibility
The ASRock X299 Extreme4 is built for the LGA 2066 socket, designed for high-end desktop processors. This board supports Intel's X299 platform, which typically targets enthusiasts and creators needing multi-core performance and extensive memory channels. In contrast, the ASRock Taichi uses the LGA1151 socket. It supports 8th and 9th Generation Intel Core processors. This socket is common in mainstream desktop builds. The difference is significant because the sockets are not compatible with each other. You must choose the board based on the specific CPU generation you plan to use. The X299 is for HEDT chips, while the Taichi is for standard Core i-series CPUs.
chipset generation
Chipset choice defines the features and longevity of your system. The X299 Extreme4 uses the Intel X299 chipset, which is part of the high-end desktop lineup. This chipset supports features like PCIe 3.0 lanes for multiple GPUs and storage devices. The Taichi motherboard utilizes the Intel Z390 chipset. This is a consumer-focused chipset for the Coffee Lake architecture. Z390 supports overclocking and offers robust connectivity options for mainstream users. The X299 chipset generally provides more PCIe lanes for expansion, while Z390 is optimized for standard desktop workflows. Your choice depends on whether you need extreme expansion or standard performance.
memory capacity
Memory support varies between these two boards. The Taichi motherboard features four DDR4 DIMM slots. It supports dual-channel memory configuration and can handle up to 64GB of RAM. This is sufficient for most gaming and productivity tasks. The data for the X299 Extreme4 does not list specific memory slots or maximum capacity. However, X299 platforms typically support quad-channel memory and higher capacities than mainstream boards. If you need maximum RAM for heavy workloads, the X299 platform is likely superior. For standard gaming, the Taichi's 64GB limit is adequate. You should verify the exact memory specs for the X299 if capacity is critical.
expansion slots
Expansion capabilities differ between the two models. The Taichi motherboard provides three PCI-Express 3.0 x16 slots. These can run in single x16 mode, dual x8/x8 mode, or triple x8/x4/x4 mode. It also includes two PCI-Express 3.0 x1 slots for flexible PCIe expansion. This setup is good for multi-GPU setups or additional cards. The X299 Extreme4 data does not specify the number or configuration of PCIe slots. X299 boards often have more lanes for multi-GPU setups. If you need multiple high-speed expansion slots, the Taichi offers a clear, documented configuration. The X299 may offer more, but the data is incomplete.
physical dimensions
Size and weight matter for case compatibility. The ASRock X299 Extreme4 measures 12 inches in length, 9.61 inches in width, and 2.36 inches in height. It weighs 3.31 pounds. The ASRock Taichi is slightly larger, measuring 12.2 inches in length and 14 inches in width. It is taller at 3.5 inches and heavier at 4.5 pounds. Both are ATX form factor boards, so they fit standard ATX cases. However, the Taichi is wider and heavier, which might affect airflow or cable management in smaller cases. The X299 is more compact in width. You should check your case dimensions to ensure the Taichi fits comfortably.
Which motherboard should you buy
Creators needing high-end desktop performance
The X299 Extreme4 targets enthusiasts with its X299 chipset and LGA 2066 socket. This platform supports high-core-count processors and extensive memory configurations. If you require maximum multi-threading power for rendering or simulation, this board provides the necessary high-end desktop foundation without compromise.
Users wanting DDR4 memory flexibility
The Z390 Taichi includes four DDR4 DIMM slots supporting dual-channel memory up to 64GB. It uses non-ECC, unbuffered modules. This configuration offers straightforward memory expansion for gaming or general productivity tasks. The Z390 chipset ensures compatibility with 8th and 9th generation Intel Core processors.
Builds requiring multiple PCIe slots
This motherboard features three PCI-Express 3.0 x16 slots and two x1 slots. You can run graphics cards in single, dual, or triple configurations with flexible bandwidth allocation. This layout suits builders who need multiple expansion cards for capture, networking, or additional storage controllers.
The products compared
ASRock X299 Extreme4 ATX Motherboard
Best for: Intel X-series desktop builds in ATX cases
- Chipset
- Intel X299
- Form Factor
- ATX
- Dimensions
- 12 × 9.61 × 2.36 inches
- Weight
- 3.31 pounds
View on Amazon: ASRock X299 Extreme4 ATX Motherboard Affiliate link
The ASRock X299 Extreme4 is an ATX motherboard built around the Intel X299 chipset. It measures 12 by 9.61 inches and weighs 3.31 pounds. This form factor supports high-end desktop processors. You should choose this board if you need a standard ATX layout for a large case. It pairs well with Intel Core X-series CPUs for demanding workloads.
Pros
- Intel X299 chipset support
- Standard ATX form factor
- 12-inch length fits most mid-towers
Cons
- Heavier build at 3.31 pounds
- Limited to Intel X-series sockets
- No mention of wireless connectivity
Good fit if
- You are building a high-end desktop with an Intel Core X-series CPU
- You need a standard ATX motherboard for a large case
- You prioritize chipset compatibility over compact size
Skip if
- You are using a micro-ATX or ITX case
- You need an AMD Ryzen processor
- You require a smaller footprint for tight builds
Verdict: ASRock X299 Extreme4 ATX Motherboard fits users building large desktops with Intel Core X-series processors. It offers standard ATX dimensions for easy installation in spacious cases.
ASRock Taichi Intel Z390 Motherboard
Best for: 8th/9th Gen Intel builds with expansion needs
- CPU Socket
- LGA1151
- Chipset
- Intel Z390
- Memory Type
- DDR4
- PCIe Version
- PCIe 3.0
- Dimensions
- 12.2 × 14 × 3.5 inches
- Weight
- 4.5 pounds
View on Amazon: ASRock Taichi Intel Z390 Motherboard Affiliate link
This ASRock Z390 Taichi ATX motherboard supports 9th and 8th Generation Intel Core processors via the LGA1151 socket. It features the Intel Z390 chipset and four DDR4 DIMM slots for up to 64GB of dual-channel memory. The board offers three PCIe 3.0 x16 slots for flexible expansion. It measures 14 by 12.2 inches and weighs 4.5 pounds. It suits users building with compatible Intel CPUs.
Pros
- Supports 9th and 8th Gen Intel Core processors
- Four DDR4 DIMM slots with 64GB max capacity
- Three PCIe 3.0 x16 slots for flexible configuration
- Intel Z390 chipset for modern connectivity
Cons
- Limited to PCIe 3.0 instead of newer standards
- Only four memory slots for high-capacity builds
- Heavier at 4.5 pounds than some competitors
Good fit if
- You are building with 8th or 9th Gen Intel CPUs
- You need flexible multi-GPU or expansion options
- You prefer a standard ATX form factor
Skip if
- You require PCIe 4.0 or 5.0 speeds
- You need more than four memory slots
- You are using AMD Ryzen processors
Verdict: ASRock Z390 Taichi ATX Motherboard fits users building with 8th or 9th Gen Intel CPUs who need flexible PCIe expansion. It is a solid choice for standard ATX cases.
Specifications side by side
| Spec | ASRock X299 Extreme4 ATX Motherboard | ASRock Taichi Intel Z390 Motherboard |
|---|---|---|
| CPU Socket | not stated | LGA1151 |
| Chipset | Intel X299 | Intel Z390 |
| Form Factor | ATX | not stated |
| Memory Type | not stated | DDR4 |
| PCIe Version | not stated | PCIe 3.0 |
| Dimensions | 12 × 9.61 × 2.36 inches | 12.2 × 14 × 3.5 inches |
| Weight | 3.31 pounds | 4.5 pounds |
| Model | 90-MXB690-A0UAYZ | Z390 TAICHI |
Frequently asked questions
Is the ASRock X299 Extreme4 better for large cases?
Yes, if you prioritize standard ATX dimensions. The X299 Extreme4 measures 12 inches by 9.61 inches. It weighs 3.31 pounds. This makes it easier to fit in spacious ATX cases. The Z390 Taichi is slightly larger and heavier, measuring 12.2 inches by 14 inches and weighing 4.5 pounds.
Which board is lighter?
The ASRock X299 Extreme4 is lighter. It weighs 3.31 pounds. The ASRock Taichi Z390 weighs 4.5 pounds. The difference is about 1.2 pounds. If you are building a compact system or moving the rig often, the lighter Extreme4 might be easier to handle during installation.
Does the Z390 Taichi have a wider board?
Yes, the Z390 Taichi is wider. Its width is 14 inches. The X299 Extreme4 has a width of 9.61 inches. The Taichi also has a height of 3.5 inches compared to the Extreme4's 2.36 inches. These dimensions affect how the board sits in your case and connects to other components.
What is the model number for the X299 Extreme4?
The model number is 90-MXB690-A0UAYZ. This identifier helps you find drivers or support materials specific to this board. The ASRock Taichi Z390 uses the model number Z390 TAICHI. Knowing the exact model ensures you download the correct BIOS updates and manual for your specific hardware revision.
Can I use the X299 Extreme4 in a standard ATX case?
Yes, it fits standard ATX cases. The board uses the ATX form factor. Its dimensions are 12 inches in length and 9.61 inches in width. Most mid-tower and full-tower ATX cases are designed to accommodate these standard measurements. You just need to ensure your case has enough depth for the rear I/O panel.
Is the Z390 Taichi suitable for 8th Gen Intel CPUs?
Yes, it is designed for 8th and 9th Gen Intel processors. The Z390 chipset supports these specific generations. This makes it a solid choice if you already own or plan to buy an 8th Gen CPU. The X299 Extreme4 targets a different platform and processor family, so compatibility depends on your CPU choice.