Table highlighting, Rdimm Lrdimm | IBM 88Y7429, x3759 M4 instruction

The server supports RDIMMs and LRDIMMs. UDIMMs are not supported.

Mixing different types of memory (RDIMMs and LRDIMMs) is not supported.

Mixing 1.5 V and 1.35 V DIMMs in the same server is supported; in such a case, all DIMMs operate at 1.5 V.

The maximum number of ranks per one channel is eight (with the exception of Load Reduced DIMMs, where more than eight ranks are supported, because one quad-rank LRDIMM provides the same electrical load on a memory bus as a single-rank RDIMM).

The maximum quantity of DIMMs that can be installed in the server depends on the number of processors installed. The table shows the maximum when all four processors are installed. When two processors are installed, the maximum quantity supported is a half of the quantity that is shown.

All DIMMs in the server operate at the same speed, which is determined as the lowest value of:

Memory speed that is supported by the specific processor.

Lowest of maximum operating speeds for selected memory configuration that depends on rated speed, operating voltage, and quantity of DIMMs per channel, as shown under "Max. operating speed" section in the table.

Table highlighting:

The entries highlighted in red text indicate that the IBM System x3750 M4 supports higher memory frequencies than the Intel processor specification. In some instances, this configuration also results larger memory capacity that the specification recommends.

Tables cells highlighted with a grey background indicate when the specific combination of DIMM voltage and number of DIMMs per channel still allows the DIMMs to operate at rated speed

Table 4. Maximum memory speeds

DIMM specification				RDIMM				LRDIMM

Ranks	Single-rank DIMMs				Dual-rank DIMMs		Quad-rank LRDIMMs

Part numbers	49Y1406 (4 GB)		49Y1559	49Y1397 (8 GB)		90Y3109 (8 GB)	49Y1567 (16 GB)
			(4 GB)	49Y1563 (16 GB)		00D4968 (16 GB)	90Y3105 (32 GB)

Rated speed	1333 MHz		1600 MHz	1333 MHz		1600 MHz		1333 MHz

Rated voltage	1.35 V		1.5 V	1.35 V		1.5 V		1.35 V

Operating voltage	1.35 V	1.5 V	1.5 V	1.35 V	1.5 V	1.5 V	1.35 V		1.5 V

Max. qty supported*	48	48	48	48	48	48	48		48

Max. DIMM capacity	4 GB	4 GB	4 GB	16 GB	16 GB	16 GB	32 GB		32 GB

Max. mem. capacity	192 GB	192 GB	192 GB	768 GB	768 GB	768 GB	1.5 TB		1.5 TB

Max memory at	128 GB	128 GB	128 GB	512 GB	768 GB	512 GB	1.5	TB	1.5 TB
maximum speed

Max operating speed (MHz)

1 DIMM per channel	1333 MHz	1333 MHz	1600 MHz	1333 MHz	1333 MHz	1600 MHz	1333	MHz	1333 MHz

2 DIMMs per channel	1333 MHz	1333 MHz	1600 MHz	1333 MHz	1333 MHz	1600 MHz	1333	MHz	1333 MHz

3 DIMMs per channel	1066 MHz	1066 MHz	1066 MHz	1066 MHz	1333 MHz	1333 MHz	1333	MHz	1333 MHz

*Maximum quantity supported is shown for four processors installed. When two processors are installed, the maximum quantity supported is a half of the quantity that is shown. When one processor is installed, the quantity is one quarter of that shown.

IBM System x3750 M4

88Y7429, x3759 M4 specifications

The IBM x3759 M4, identified by the part number 88Y7429, is a robust and versatile server designed for enterprise environments that require high performance and reliability. This model is part of IBM's renowned x86 server lineup and reflects the company’s commitment to delivering solutions that meet the demands of modern data centers.

One of the standout features of the x3759 M4 is its support for powerful Intel Xeon processors. This allows organizations to leverage significant processing power for demanding applications, including virtualization, cloud computing, and big data analytics. The server supports multiple CPU configurations, enabling users to tailor performance to their specific needs.

Memory capacity is another critical aspect of the x3759 M4. It supports up to 1.5TB of DDR4 RAM, with advanced memory technology that enhances data throughput and reduces latency. This extensive memory capability is particularly beneficial for memory-intensive applications, ensuring efficient data handling and processing.

Storage options on the x3759 M4 are incredibly flexible, supporting a variety of configurations, including SAS, SATA, and SSD drives. With hot-swap capabilities, users can easily replace or upgrade drives without downtime, enhancing overall system availability. This feature is crucial for businesses that demand 24/7 operations.

The server features advanced virtualization capabilities, supporting multiple operating systems and applications running simultaneously. With built-in support for various hypervisors, companies can maximize resource use and minimize costs. This feature enables organizations to create a scalable and efficient IT infrastructure.

Networking capabilities of the x3759 M4 are robust, featuring multiple PCIe slots for the addition of network cards, including 10GbE options. This ensures high-speed connectivity essential for data-intensive applications and cloud-based services.

Moreover, the x3759 M4 is designed with energy efficiency in mind. It adheres to strict energy standards and includes various power management features, reducing operational costs while maintaining performance. This focus on energy efficiency is critical for organizations looking to minimize their environmental impact while maximizing performance.

In conclusion, the IBM x3759 M4, 88Y7429, is an enterprise-grade server that combines advanced processing power, extensive memory capacity, flexible storage options, and robust networking capabilities. Its design focuses on reliability, performance, and energy efficiency, making it an ideal choice for organizations seeking to modernize their IT infrastructure and enhance operational efficiencies.