HP M393A2K40CB2-CTD-HP Single Rank 1X16GB X4 DDR4-2666 CAS-19-19-19

( Brand: Hp ), ( Manufacturer Part Number: M393A2K40CB2-CTD-HP ), ( Type: Memory )

Review HP Hpe 16gb 1x16gb Single Rank X4 Ddr4-2666

The **HP M393A2K40CB2-CTD** is a high-performance, single-rank, x4 configuration DDR4 memory module designed to deliver exceptional speed and reliability for enterprise-grade servers and workstations. Engineered with **16GB of high-density RAM** per module, this memory kit operates at an optimized **DDR4-2666MHz** clock speed, ensuring blazing-fast data transfer rates for demanding workloads such as virtualization, database management, and high-performance computing. The **single-rank (Rx4) architecture** provides a balance between capacity and bandwidth, making it ideal for systems requiring efficient memory access without the overhead of multi-rank configurations. With a **CAS latency of 19-19-19**, this module achieves a precise timing profile that maximizes throughput while maintaining stability, reducing latency in memory-intensive applications. Built with **low-power, high-efficiency DRAM chips**, it is optimized for energy efficiency, reducing operational costs in data centers while still delivering peak performance. The **CTD (Commercial Temperature) variant** ensures robust operation in standard server environments, offering enhanced durability and longevity compared to consumer-grade memory. Whether deployed in HP ProLiant servers, workstations, or high-end computing clusters, this memory module is a reliable choice for users seeking a seamless blend of speed, capacity, and efficiency. Its compatibility with HP s server ecosystem ensures seamless integration, making it a trusted component for businesses and IT professionals demanding top-tier performance in mission-critical applications.

### **Pros and Cons of buying a HP M393A2K40CB2 (1x16GB DDR4-2666 CL19-19-19-19) Memory Kit**

1. **High Capacity and Single-Rank Design** This is a single-rank (SR) DDR4 memory module with 16GB capacity, which is ideal for systems where memory bandwidth is not the primary bottleneck but stability and reliability are important. Single-rank modules are less prone to timing issues compared to dual-rank (DR) modules, making them a safer choice for overclocking or systems with strict memory timing requirements.

2. **Compatibility with HP Workstations** This module is designed for HP s ProLiant and EliteDesk/EliteWorkstation series, ensuring proper fit and functionality in these systems. It is optimized for enterprise-grade hardware, which often benefits from stable, low-latency memory.

3. **Low Latency (CL19)** The CAS latency (CL19) is relatively low for a 2666MHz module, which can improve performance in latency-sensitive applications like gaming, video editing, or database workloads. However, this is not as aggressive as lower CL timings found on consumer-grade memory.

4. **Reliability and Warranty** HP memory modules typically come with a robust warranty (often 3-5 years) and are built to enterprise standards, reducing the risk of premature failure compared to no-name or budget memory.

5. **Single Module Convenience** Since this is a single 16GB module, it is easier to install and replace compared to larger kits with multiple sticks. This is useful for systems where memory is already populated with other modules.

6. **Stable Performance for Workloads** The tight timings (19-19-19-19) suggest that this memory is optimized for stability rather than extreme overclocking. This makes it well-suited for professional workloads where consistency is more important than raw speed.

---

1. **Single-Rank Limitation** While single-rank memory is stable, it has lower bandwidth than dual-rank modules. If you are running a multi-core workload (e.g., video rendering, 3D modeling, or virtualization), dual-rank memory may provide better performance due to increased data throughput.

2. **2666MHz Speed** DDR4-2666 is not the fastest available speed. Modern CPUs (especially Intel Core i9, Threadripper, or Xeon) and high-end motherboards support DDR4-3200 or DDR4-3600, which can offer better performance in memory-bound applications. If your system supports faster speeds, you may miss out on potential gains.

3. **Limited Upgrade Path** If you later decide to upgrade to a larger capacity (e.g., 32GB or 64GB), you may need to replace the entire kit rather than adding more modules. This is less of an issue if you are happy with 16GB, but it s worth considering for future scalability.

4. **Price Relative to Alternatives** HP memory modules are often priced higher than third-party options (e.g., Corsair, Kingston, or Crucial). If you are on a tight budget, you may find similarly reliable memory from other brands at a lower cost.

5. **Not Ideal for Extreme Overclocking** The tight timings (19-19-19-19) are not aggressive enough for overclocking enthusiasts who push memory to higher speeds or lower latencies. If you plan to overclock, you may need to source a different module with looser timings or higher speed support.

6. **Potential for Redundancy** If you are running a system with multiple memory slots, this single 16GB module may leave some slots empty, which could limit future expansion. However, this is only a concern if you plan to add more memory later.

---

The **HP M393A2K40CB2 (16GB DDR4-2666 CL19-19-19-19)** is a solid choice for users who prioritize **stability, reliability, and compatibility with HP workstations**. It is well-suited for:

- **Professional workloads** (e.g., CAD, video editing, database management) where memory stability is critical.

- **Systems where memory bandwidth is not the bottleneck** (e.g., single-core or lightly threaded applications).

- **Users who value enterprise-grade components** and warranties.

However, if you are running a **multi-core CPU, need higher memory capacity, or want better performance in memory-intensive tasks**, you may want to consider:

- **Dual-rank DDR4-3200 or DDR4-3600 modules** for better bandwidth.

- **Third-party memory kits** (e.g., Corsair Vengeance, Kingston Fury, or G.Skill Trident Z) for better value or overclocking potential.

- **Larger capacity kits** (e.g., 32GB or 64GB) if you anticipate future upgrades.

---

- You are using an **HP ProLiant or EliteWorkstation** and need a reliable, single-rank memory solution.

- Your workload is **not heavily memory-bound** (e.g., office applications, light gaming, or single-threaded tasks).

- You prefer **enterprise-grade components** with a strong warranty.

- You need **higher memory capacity** (e.g., 32GB or 64GB) for multi-core workloads.

- Your system supports **DDR4-3200 or faster** and you want better performance.

- You are on a **tight budget** and third-party memory offers similar reliability at a lower cost.

- You plan to **overclock memory** and need modules with looser timings or higher speed support.

For most **workstation or professional users**, this module is a **safe and reliable choice**, but those with demanding memory requirements may benefit from exploring other options.

Details:

Tech Hardware Deals utilizes stock images whenever a genuine image isn't available. Unbeatable 1 to 3 years Warranty either Return Base or Advance Replacement available. Trade In purchase program for decommissioned equipment. Components stated within the listing will always take precedence over what is shown in image.

Quality New and Refurbished IT parts with up to 80% off the RRP. Inventory shipped within 60 minutes to anywhere in the Teri State. Server Configuration to order from Inventory across all G10, G9, G8 HP range. Tech Hardware Deals is the Retail arm of a global leader in new and end life server, storage networking systems peripherals.

part #: m393a2k40cb2ctd prices

• $69.90-$906.82

specifications servermemor:

• brand: Hp
• mpn: M393a2k40cb2-ctd-hp
• type: Memory

shipping servermemor:

• class: Standard
• service: Standard
• transit: 4-8 Days
• cost: $0.00
• type: Fixed

returns servermemor:

• paid by: Seller
• time: 30 Days
• method: Money back
• policy: Returns Accepted

payments servermemor:

• wallet: Paypal
• credit card: Diners-club
• other

offer servermemor:

• started: June 5, 2026
• sold: 0
• availability: In Stock
• options: Ship-to-home

seller servermemor:

• # reviews: 6374
• city: New York, New York
• rating: 99.9%

general servermemor:

• Enterprise Networking, Servers > Server Components > Server Memory RAM
• condition: Used

Hp M393A2K40CB2-CTD Is Similar To:

• 16gb 500666-b21 Dimm Reg 1066mhz Cas-7 501538 Hp 4rx4 Pc3-8500r Ddr3 500207-071 (17.7% similar) We function as an extension of your it department. In addition buyers who back out after the end of the offer who no longer want the item or realize that it wan't what they wanted, etc. Each unit is fully tested and guaranteed as functionally new and carries a free, one year warranty. Mat buys and ...(February 27th, 2015)
• Hp Rank 591750-071 Pc3-10600 Memory Ecc 591750-571 Single Ddr3 Registered 4gbx1 (29.3% similar) Modules were all tested before being pulled from Z800 workstation. All are in good working condition...(February 26th, 2015)
• 605312-371 Hewlett Packard Hpe Hp Dimm Memory Module (21.5% similar) High quality 100 original fast shipping. 100 original high quality fast shipping Hpe Hp 4GB PC3L-10600R 1RX4 dim memory module integrity global solutions is a twin cities based company with more than twenty years of experience buying and selling new, used, refurbished data hardware, systems, parts...(October 30th, 2018)
• 64790-b21 Hp Dual Rank Reg Memory For (27.8% similar) Bulk discounts available upon request. Free same day shipping. XA0 30 day money back guarantee. XA0 tested approved. XA0 genuine. The price advertised is for one 1 item only...(March 23rd, 2018)
• 680536-001 Hp Ref Dual Rank Registered (24.1% similar) Please with any questions regarding what is or not included in this listing. Via ups or USPS. Tech hardware deals is the retail arm of a global leader in new and end life server, storage networking systems peripherals. Components stated within the listing will always take precedence over what is ...(March 22nd, 2019)
• 687460-001 Hp Genuine Dual Rank (27.5% similar) It is extremely important that you directly regarding any issues may have by sending a message. Any unit with free shipping only applies to FedEx ground in the lower 48. If ordered and paid before 3PM CST...(June 4th, 2018)
• 687461-001 Hp Ref Dual Rank Registered Ca (28.6% similar) Please with any questions regarding what is or not included in this listing. Components stated within the listing will always take precedence over what is shown in image. Tech hardware deals is the retail arm of a global leader in new and end life server, storage networking systems peripherals. Via ...(March 2nd, 2019)
• 693374-001 Hp Dual Rank Memory Module (29.6% similar) Or its subsidiaries in the USA and other countries. O box, APO FPO addresses. 0-HOURS on hard drives means the are never installed used in a system and is brand new with no hour usage them. All the logos used are propriety to their respective owners and technology trader does not have any authority ...(September 28th, 2018)
• 805667-b21 Hp 4gb 1x4gb Ddr4 Single (37.2% similar) Ships from: rhino technology group, inc. Global shipping available to most locations. Our platforms rhino technology group, inc. Rhino stocks just about all things Hp, IBM, dell, sun, Cisco and juniper, both new refurbished...(March 2nd, 2017)
• 815098-b21 Hp Ent New Hpe 889296522379 (20.7% similar) Protect it now with a consumer priority service warranty. Customer agrees to execute any financing statements or other documents as arsenal PC may request in order protect security interest. Upon any default by customer hereunder, arsenal PC shall have all rights and remedies of a secured party ...(August 18th, 2017)
• 819414-001 Hp New Bulk Dual Rank Load Re (28.8% similar) Via ups ground. Components stated within the listing will always take precedence over what is shown in image. Tech hardware deals is the retail arm of a global leader in new and end life server, storage networking systems peripherals. Please with any questions regarding what is or not included in ...(March 2nd, 2019)