ASUS Prime X670-P CSM DDR5 AMD Motherboard

The ASUS Prime X670-P CSM is an ATX-form-factor motherboard (12 × 9.6 in / 30.5 × 24.4 cm) built on the AMD X670 chipset and designed for AMD Ryzen 7000 Series desktop processors using the AM5 socket. It brings together a robust power delivery system, comprehensive thermal management, and a wide range of connectivity options to support both daily workstation use and demanding productivity workloads. On the memory side, four DIMM slots accommodate up to 128 GB of unbuffered DDR5 RAM — ECC or non-ECC — at speeds from DDR5-4800 up to DDR5-6400+ with overclocking. The board supports AMD EXPO profiles and the ASUS OptiMem II signal-integrity feature for stable high-frequency operation. Storage is well catered for: three Key-M M.2 slots cover PCIe 5.0 ×4 (M.2_1), PCIe 4.0 ×4 (M.2_2, up to 22110 length), and PCIe 4.0 ×4 (M.2_3 via chipset), complemented by six SATA 6 Gb/s ports. AMD RAIDXpert2 supports NVMe RAID 0/1/10 and SATA RAID 0/1/10. An M.2 heatsink and VRM heatsink help prevent thermal throttling during sustained transfers. Expansion is handled by one CPU-connected PCIe 4.0 ×16 slot (full ×16 bandwidth), two chipset PCIe 4.0 ×16 slots (×4 mode), and one PCIe 3.0 ×1 slot (bandwidth shared with SATA6G_3/4 ports). Rear connectivity includes 10 USB ports: one USB 3.2 Gen 2×2 Type-C (20 Gbps), three USB 3.2 Gen 2 Type-A (10 Gbps), four USB 3.2 Gen 1 Type-A (5 Gbps), and two USB 2.0 Type-A. Video outputs comprise a DisplayPort 1.4 (up to 8K@60Hz) and HDMI 2.1 (4K@60Hz) for CPUs with integrated graphics. Wired networking is handled by a Realtek 2.5 Gb Ethernet controller; an optional Wi-Fi module can be fitted via the rear Key-E V-M.2 slot. Audio is powered by a Realtek 7.1 Surround Sound HD Audio CODEC supporting 24-bit/192 kHz playback, backed by audio shielding, dedicated audio PCB layers, and premium audio capacitors. Internal fan management spans one CPU fan header, one CPU OPT fan header, one AIO pump header, and three chassis fan headers — all 4-pin PWM/DC auto-detecting and controllable through Fan Xpert 4 with AI Cooling II or the UEFI BIOS. The BIOS FlashBack button on the rear I/O panel allows firmware updates without a CPU or RAM installed. ASUS 5X Protection III covers DrMOS digital VRM, ESD guards, LANGuard, overvoltage protection, SafeSlot Core+, and a stainless-steel back I/O shield. RGB enthusiasts can connect accessories to two Aura RGB headers and three Addressable Gen 2 headers, all managed through Armoury Crate with Aura Sync. Verifiable Specifications: • Socket: AMD AM5 | Chipset: AMD X670 • Memory: 4× DIMM, max 128 GB, DDR5-4800 to 6400+(OC), ECC/non-ECC, Dual-Channel, EXPO • M.2: M.2_1 PCIe 5.0 ×4 (2242/2260/2280); M.2_2 PCIe 4.0 ×4 (2242/2260/2280/22110); M.2_3 PCIe 4.0 ×4 (2242/2260/2280) • SATA: 6× SATA 6 Gb/s • PCIe: 1× PCIe 4.0 ×16 (CPU, ×16 mode); 2× PCIe 4.0 ×16 (chipset, ×4 mode); 1× PCIe 3.0 ×1 • Rear USB: 1× USB 3.2 Gen 2×2 Type-C; 3× USB 3.2 Gen 2 Type-A; 4× USB 3.2 Gen 1 Type-A; 2× USB 2.0 • Display: 1× DisplayPort 1.4 (8K@60Hz); 1× HDMI 2.1 (4K@60Hz) • LAN: Realtek 2.5 Gb Ethernet • Audio: Realtek HD Audio, 7.1 surround, 24-bit/192 kHz • Form Factor: ATX, 30.5 × 24.4 cm • BIOS: 256 Mb Flash ROM, UEFI AMI • OS Support: Windows 11 / Windows 10 64-bit