KVR21R15S4/8 Kingston 1x8GB DDR4 ECC RAM

*Picture may not be exactly the same as the product

Product line:

ValueRAM

See all ECC Registered RAM (RDIMM) DDR4

See other Kingston products

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Happyware Article Number:

SH5R3998-212754

Manufacturer Number:

KVR21R15S4/8

Brand:

Kingston

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Description Technical details Warranty & Technical Support Reviews Bulk Deals

KVR21R15S4/8

Enterprise DDR4 ECC Registered RDIMM for Dense Server Memory Scaling with the KVR21R15S4/8

The KVR21R15S4/8 is a Kingston ValueRAM DDR4-2133 ECC Registered (RDIMM) designed for enterprise CPU platforms that mandate registered memory, including multi-socket server generations where signal integrity and predictable timing are critical. By using an RDIMM architecture, the KVR21R15S4/8 reduces electrical loading on the memory controller to support higher population across channels, improving capacity scaling for virtualization hosts, database services, and general application servers.

Built as a low-profile 288-pin module, the KVR21R15S4/8 fits airflow-constrained 1U/2U chassis and dense blade-style designs without interfering with shrouds or fan zones. Its JEDEC 2133 MT/s profile at 1.2V targets stability over tuning, aligning with data center BIOS baselines rather than XMP-style overclocking. ECC on the 72-bit data path helps protect long-running workloads from correctable memory errors, while the registered buffering supports consistent performance under heavy thread concurrency and high DIMM counts across PCIe-attached expansion and storage-heavy configurations.

Why Choose the KVR21R15S4/8?

The KVR21R15S4/8 delivers a practical density-to-reliability balance for environments standardizing on DDR4 ECC RDIMM memory, enabling controlled capacity growth without re-architecting the host. It is well suited to fleet deployments where uniform JEDEC behavior, predictable latency, and compatibility with registered-memory platforms drive operational consistency and scalable maintenance practices.

Kingston engineers ValueRAM to meet enterprise qualification expectations, focusing on standards-based interoperability, component traceability, and long-term availability aligned with modern server lifecycle management and data center operating requirements.

Key Applications:

Server memory expansion
Virtualization host upgrades
Database server memory upgrades
Application server consolidation
Registered DDR4 ECC platform standardization

At Happyware - Server Hardware you benefit from non-binding offers tailored precisely to your needs and bulk order discount options that simplify cost control when rolling out KVR21R15S4/8 across multi-node server estates.

Technical details of KVR21R15S4/8

Capacity:

8GB

Generation:

DDR4

Single Module Capacity:

8GB

Frequency:

2133MHz

Form Factor:

DIMM

DIMM Type:

DDR4

ECC:

ECC

Registered/Unbuffered:

Registered

Modules Quantity:

Pins:

288

Voltage:

1.2V

Rank:

Single-Rank x4

Intel XMP:

AMD EXPO:

Heat Spreader:

RGB Lighting:

Module height:

JEDEC:

PC4-17000R

CAS Latency:

Row-to-Column Delay (tRCD):

Row Precharge Time (tRP):

Certificates:

RoHS

How long is the Warranty and how you can get technical support for KVR21R15S4/8

Warranty:	12 months (part)
RMA through customer:	yes
RMA Url:	https://www.kingston.com/de/support/rma-enduser
Description:	Kingston typically requires the item to be returned first before sending a replacement. There are no standard guaranteed delivery times or on-site services offered under the warranty.