Unleashing the Power: The World's Largest Memory Stick with over 150 DRAM ICs

Table of Contents

1. Introduction
2. The Evolution of Server Hardware
   1. IBM Power 5 CPU Module
   2. DDR3 and DDR4 Comparison
   3. Unique Memory Sticks
   4. ASUS and G.Skill Collaboration
   5. IBM and the Challenge of Limited Memory
3. IBM CDIMs: Custom and Centaur Memory DIMMs
   1. The Power 7 DIMM
   2. The Power 8 DIMM
   3. Deleting the Centaur Chip
4. The Largest Memory DIMM: IBM Power 8 CDIM
5. Non-Volatile Memory DIMMs
   1. Introducing NVIDIMs
   2. Restoring Data in Case of Power Outages
6. Intel DC PMM: A Unique Technology
   1. Intel DC PMM vs. NVIDIM
   2. 3D Cross Point Technology
7. Conclusion

Evolution of Server Hardware: Exploring the World of Unique Memory DIMMs ☁️

In the world of server hardware, innovation never ceases. From the powerful CPUs to the cutting-edge memory modules, server manufacturers are constantly pushing the boundaries of what is possible. In this article, we will take a closer look at the evolution of server hardware, focusing on unique memory DIMMs that have brought significant advancements to the field.

1. Introduction

Server hardware plays a crucial role in powering the digital landscape. With each passing year, new technologies emerge, enhancing server performance and reliability. One vital component of server hardware is the memory DIMM (Dual In-Line Memory Module), responsible for storing and retrieving data quickly and efficiently.

2. The Evolution of Server Hardware

2.1. IBM Power 5 CPU Module

The story begins with the IBM Power 5 CPU module, which introduced the concept of combining CPU and memory within the same module. This innovative design allowed for seamless communication between the two components, resulting in improved performance.

2.2. DDR3 and DDR4 Comparison

As technology progressed, DDR3 and DDR4 memory modules became the norm in the server industry. Despite the similarities in length between the two, the IBM Power 5 and off-the-shelf DDR4 modules showcased a significant difference in size. This prompted server manufacturers to explore even more peculiar memory sticks.

2.3. Unique Memory Sticks

One such example is the collaboration between ASUS and G.Skill. Recognizing the limitations of high-end boards with only two memory slots, they created special DIMMs called Trident CRGB DC (Double Capacity). These DIMMs offered double the capacity of conventional sticks, catering to those in need of more significant memory resources.

2.4. IBM and the Challenge of Limited Memory

IBM faced its own challenges when it came to memory capacity. While their Power 8 server could accommodate up to eight DIMMs, the limited 16GB capacity per DIMM posed a considerable constraint. To overcome this limitation, IBM developed custom DIMMs called CDIMs (Centaur/Custom DIMMs). These DIMMs featured a memory buffer chip and a level four cache extension, increasing both capacity and performance.

3. IBM CDIMs: Custom and Centaur Memory DIMMs

3.1. The Power 7 DIMM

The Power 7 DIMM served as a precursor to the Power 8 DIMM. Though slightly smaller in size, it showcased a significant advancement in memory capacity. With additional empty pads on the DIMM, IBM had the potential to create even higher-capacity DIMMs in the future.

3.2. The Power 8 DIMM

The Power 8 DIMM took IBM's memory innovation to the next level. With more integrated chips and a larger centaur chip, it boasted a staggering capacity of 32GB. Furthermore, the centaur chip served not only as a memory buffer but also as a level four cache extension, making it a truly unique component.

3.3. Deleting the Centaur Chip

Curiosity piqued, it becomes tempting to explore the possibilities of removing the centaur chip. However, caution is advised, as unintentional damage to the DIMM can occur. Nonetheless, examining the chip's Package size compared to its actual size Hints at the vast potential it holds for future advancements.

4. The Largest Memory DIMM: IBM Power 8 CDIM

While exploring IBM's memory innovations, it is essential to mention the largest memory DIMM available for purchase. Comprising an astonishing 152 memory chips and boasting a total capacity of 32 gigabytes, the IBM Power 8 CDIM is a testament to the ever-expanding boundaries of server hardware.

5. Non-Volatile Memory DIMMs

5.1. Introducing NVIDIMs

In the event of a power outage, volatile memory DIMMs lose all stored information. This vulnerability led to the development of non-volatile memory DIMMs, such as NVIDIMs. These DIMMs utilize flash memory to permanently store data, ensuring that critical information remains intact, even in the absence of power.

5.2. Restoring Data in Case of Power Outages

An NVIDIM consists of DRAM ICs, a gigatag controller, and NAND flash memory. In the event of a power outage, the information from the DRAM ICs is stored in the flash module. Upon the return of power, the capacitors are recharged, and the data is restored from flash to DRAM, making it readily accessible.

6. Intel DC PMM: A Unique Technology

6.1. Intel DC PMM vs. NVIDIM

Intel offers its unique non-volatile memory solution, the DC (Data Center) PMM (Persistent Memory Module). Unlike NVIDIM, which utilizes flash memory, the DC PMM employs 3D Cross Point technology. While slower in terms of read and write speeds compared to conventional DRAM, the DC PMM offers higher capacities at a more affordable price point.

6.2. 3D Cross Point Technology

The 3D Cross Point modules used in Intel's DC PMM offer an intriguing alternative to traditional DRAM. Despite slightly slower performance, the DC PMM provides an extended cache, larger capacities, and incredible affordability, making it an excellent choice for server users needing vast amounts of memory.

7. Conclusion

The world of server hardware never ceases to impress. From unique memory DIMMs to non-volatile memory solutions, manufacturers constantly push the boundaries of what is possible. IBM's CDIMs and Intel's DC PMM showcase the immense potential for increased capacity, performance, and reliability in the server industry. As technology continues to advance, we eagerly anticipate the future innovations that await us.

🌐 Resources:

• IBM Power Systems
• ASUS Server Motherboards
• G.Skill Memory
• Intel Data Center Memory