Crucial CT4G4RFS8266 User Manual
PRODUCT HIGHLIGHTS
• Available in RDIMMs, VLP
RDIMMs, LRDIMMs, and
ECC UDIMMs
• Greater installed memory
capacity per server with
8Gb-based components
• Optimized for the latest Intel®
platforms
• Compatible with OEM servers and
warranties
• Quality tested to mission-critical
standards
• Backed by the Reliance Program
• Limited lifetime warranty
New Crucial® DDR4 2666 MT/s
Server Memory
Get faster memory speeds backed by Micron® quality
Built with new technology tailored for the latest Intel® platforms, Crucial DDR4
server memory allows you to increase system performance with memory speeds
up to 2666 MT/s and densities up to 64GB.1 Crucial DDR4 server memory
enables your systems to reach their full performance potential in a variety of
module types designed and manufactured from start to finish in Micron fabs.
Maximize system density with 8Gb-based components
Higher density components enable higher density modules, which oer increased
performance. This makes it easy to scale up in the future as dependence on
server applications increases through expanded virtualization, OLTP, Big Data, in-memory
databases, and more – all of which rely on memory density and performance.
Micron® quality — a higher level of reliability
Server memory that’s built to last requires lasting
industry relationships and technology collaboration
over multiple product cycles. As a brand of Micron,
we work closely with the industry leaders in CPU
and platform development, along with the leading
server and motherboard manufacturers to enable
the next level of memory technology. The result?
More than 35 years of expertise that’s poured into
die selection, DRAM and PCB design, module
assembly, and testing from start to finish. This can
only be achieved by a true memory manufacturer
– don’t settle for anything less.
2
Crucial DDR4 2666 MT/s Server Memory modules
PART NUMBER MODULE TYPE SPEED DENSITY COMP CONFIG RANK VOLTAGE UPC
CT4G4WFS8266 ECC UDIMM 2666MT/s 4GB X8 1 1.2V 649528776594
CT4G4RFS8266 RDIMM 2666MT/s 4GB X8 1 1.2V 649528776693
CT8G4WFD8266 ECC UDIMM 2666MT/s 8GB X8 2 1.2V 649528776822
CT8G4RFS4266 RDIMM 2666MT/s 8GB X4 1 1.2V 649528776747
CT8G4RFD8266 RDIMM 2666MT/s 8GB X8 2 1.2V 649528781109
CT8G4RFS8266 RDIMM 2666MT/s 8GB X8 1 1.2V 649528780539
CT16G4RFD4266 RDIMM 2666MT/s 16GB X4 2 1.2V 649528776495
CT16G4RFS4266 RDIMM 2666MT/s 16GB X4 1 1.2V 649528780584
CT16G4RFD8266 RDIMM 2666MT/s 16GB X8 2 1.2V 649528779717
CT16G4VFS4266 VLP RDIMM 2666MT/s 16GB X4 1 1.2V 649528780683
CT32G4RFD4266 RDIMM 2666MT/s 32GB X4 2 1.2V 649528779762
CT32G4LFD4266 LRDIMM 2666MT/s 32GB X4 2 1.2V 649528780638
CT64G4LFQ4266 LRDIMM 2666MT/s 64GB X4 4 1.2V 649528780805
2pc Kits
PART NUMBER MODULE TYPE SPEED DENSIT Y COMP CONFIG RANK VOLTAGE UPC
CT2K4G4WFS8266 ECC UDIMM 2666MT/s 8GB Kit (2x4GB) X8 1 1.2V 649528776617
CT2K4G4RFS8266 RDIMM 2666MT/s 8GB Kit (2x4GB) X8 1 1.2V 649528776716
CT2K8G4WFD8266 ECC UDIMM 2666MT/s 16GB Kit (2x8GB) X8 2 1.2V 649528776846
CT2K8G4RFS4266 RDIMM 2666MT/s 16GB Kit (2x8GB) X4 1 1.2V 649528776761
CT2K8G4RFD8266 RDIMM 2666MT/s 16GB Kit (2x8GB) X8 2 1.2V 649528781116
CT2K8G4RFS8266 RDIMM 2666MT/s 16GB Kit (2x8GB) X8 1 1.2V 649528780553
CT2K16G4RFD4266 RDIMM 2666MT/s 32GB Kit (2x16GB) X4 2 1.2V 649528776525
CT2K16G4RFS4266 RDIMM 2666MT/s 32GB Kit (2x16GB) X4 1 1.2V 649528780607
CT2K16G4RFD8266 RDIMM 2666MT/s 32GB Kit (2x16GB) X8 2 1.2V 649528779724
CT2K16G4VFS4266 VLP RDIMM 2666MT/s 32GB Kit (2x16GB) X4 1 1.2V 649528780706
CT2K32G4RFD4266 RDIMM 2666MT/s 64GB Kit (2x32GB) X4 2 1.2V 649528779779
CT2K32G4LFD4266 LRDIMM 2666MT/s 64GB Kit (2x32GB) X4 2 1.2V 649528780652
CT2K64G4LFQ4266 LRDIMM 2666MT/s 128GB Kit (2x64GB) X4 4 1.2V 649528780829
4pc Kits
PART NUMBER MODULE TYPE SPEED DENSITY COMP CONFIG RANK VOLTAGE UPC
CT4K4G4WFS8266 ECC UDIMM 2666MT/s 16GB Kit (4x4GB) X8 1 1.2V 649528776631
CT4K4G4RFS8266 RDIMM 2666MT/s 16GB Kit (4x4GB) X8 1 1.2V 649528776730
CT4K8G4WFD8266 ECC UDIMM 2666MT/s 32GB Kit (4x8GB) X8 2 1.2V 649528776860
CT4K8G4RFS4266 RDIMM 2666MT/s 32GB Kit (4x8GB) X4 1 1.2V 649528776785
CT4K8G4RFD8266 RDIMM 2666MT/s 32GB Kit (4x8GB) X8 2 1.2V 649528781130
CT4K8G4RFS8266 RDIMM 2666MT/s 32GB Kit (4x8GB) X8 1 1.2V 649528780577
CT4K16G4RFD4266 RDIMM 2666MT/s 64GB Kit (4x16GB) X4 2 1.2V 649528776532
CT4K16G4RFS4266 RDIMM 2666MT/s 64GB Kit (4x16GB) X4 1 1.2V 649528780621
CT4K16G4RFD8266 RDIMM 2666MT/s 64GB Kit (4x16GB) X8 2 1.2V 649528779731
CT4K16G4VFS4266 VLP RDIMM 2666MT/s 64GB Kit (4x16GB) X4 1 1.2V 649528780720
CT4K32G4RFD4266 RDIMM 2666MT/s 128GB Kit (4x32GB) X4 2 1.2V 649528779786
CT4K32G4LFD4266 LRDIMM 2666MT/s 128GB Kit (4x32GB) X4 2 1.2V 649528780676
CT4K64G4LFQ4266 LRDIMM 2666MT/s 256GB Kit (4x64GB) X4 4 1.2V 649528780843
Limited lifetime warranty valid everywhere except Germany,
where warranty is valid for ten years from date of purchase.
1. Crucial® DDR4 LRDIMMs reach densities up to 64GB. 2. Reliance Program benefits may vary and are only available
to qualified customers in select regions. Contact your
Crucial sales representative for more information.
©2016 Micron Technology, Inc. All rights reserved. Information is subject to change without notice. Micron and the Micron logo are registered
trademarks of Micron Technology, Inc. Crucial, the Crucial logo, and The memory & storage experts are trademarks or registered trademarks
of Micron Technology, Inc. Intel and Xeon are trademarks of Intel Corporation in the U.S. and/or other countries. All other trademarks
and service marks are the property of their respective owners. Products and specifications are subject to change without notice. Neither
Crucial nor Micron Technology is responsible for omissions or errors in typography or photography.
REVISION: 12/8/2016
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