This article covers クルーシャル (マイクロン製) デスクトップ用メモリ 8GBX1枚 DDR5-4800 制限付無期限保証 CT8G48C40U5 【国内正規代理店品】.

Overview

The Crucial CT8G48C40U5 is a 8GB DDR5-4800 memory module designed for desktop PCs, manufactured by Micron's own brand. It operates at 4800 MT/s (PC5-38400) and is positioned as an entry-level DDR5 option. What sets it apart is the direct Micron heritage, which ensures reliability and broad compatibility across DDR5 platforms. Running at only 1.1V, this stick generates less heat than higher-speed DDR5 modules, making it a sensible choice for builds where power efficiency and low thermals are priorities. The CAS latency is CL40, typical for DDR5-4800, providing balanced performance for everyday tasks and light gaming. Crucial backs this memory with a limited lifetime warranty, covering manufacturing defects for the life of the product (subject to terms). This adds peace of mind for budget-conscious buyers who still want long-term support.

Compatibility Guide

The CT8G48C40U5 is compatible with Intel 600/700 series chipsets (12th/13th/14th Gen Core) and AMD AM5 motherboards (Ryzen 7000/8000 series). It runs at its native DDR5-4800 speed, which is slightly below AMD's default 5200 MT/s for Ryzen 7000, but fully within spec. Using a standard 288-pin DIMM form factor, it fits any desktop DDR5 slot. Since it lacks a large heatsink, it won't interfere with oversized CPU coolers or other components. No extra power cables are required ?the motherboard's DRAM power feed is sufficient. For optimal performance, install two identical sticks in dual-channel mode (slots A2 and B2). Single-channel operation is possible but halves memory bandwidth, so it's best for basic office or web-browsing tasks.

Product Info

The Crucial CT8G48C40U5 is a single 8GB DDR5-4800 memory module from Micron's consumer brand. It conforms to the PC5-38400 standard and operates at 1.1V with a CAS latency of 40. The limited lifetime warranty covers defects under normal use. Market positioning: entry-level DDR5. It's an affordable way to adopt the latest memory technology, especially for users building a budget DDR5 system or needing a spare/upgrade stick for an existing DDR5 machine.

Best Use Cases

Budget DDR5 builders: If you're assembling a low-cost DDR5 PC for web browsing, office work, or light gaming, this stick provides a reliable foundation. Pair it with a second matching stick for dual-channel performance. Not ideal for high-refresh-rate gaming where memory bandwidth is critical. Low-power systems: The 1.1V operation keeps temperatures down, making it a good fit for passively cooled or SFF builds where heat dissipation is limited. However, if you need high-bandwidth for video editing, consider faster DDR5. * Compatibility-focused upgrades: When you need a known-good module that works out of the box with most DDR5 boards, Crucial's QVL presence reduces compatibility headaches. This is especially helpful for HEDT or server-grade builds where stability matters more than raw speed.

Things to Consider

Most notably, this is a single 8GB stick ?running in single-channel mode significantly reduces memory bandwidth compared to a dual-channel kit. For gaming or multitasking, purchasing two sticks (or a 2x8GB kit) is strongly recommended. DDR5-4800 is the slowest official DDR5 speed. If you're using a Ryzen 7000 CPU that defaults to 5200, you may see a minor performance hit. Similarly, if you mix this with faster DDR5 modules, all modules will downclock to 4800. Check your motherboard's QVL for this specific model (CT8G48C40U5) before purchase. While Crucial memory is widely compatible, some boards require a BIOS update to properly support DDR5-4800. ## FAQ
Q: Can I use this memory with a DDR4 motherboard? A: No. DDR5 modules have a different physical notch and voltage scheme. They are not backward compatible with DDR4 sockets. Q: Is one stick enough for gaming? A: For most modern games, 8GB is insufficient; you'll experience stuttering and slower load times. Dual-channel 16GB (2x8GB) is the minimum recommended for a playable experience. Q: Does this memory support Intel XMP or AMD EXPO? A: No. Crucial DDR5-4800 modules are JEDEC standard and do not include XMP or EXPO profiles. They run at 4800 MT/s with CL40 out of the box, which is fine but not overclockable beyond that.

Product Disclosure (Amazon)

  • Manufacturer: Crucial(クルーシャル)
  • ASIN: B09HWFZZM4
  • Note: This article covers a manufacturer-made product based on Amazon listing details.