Kingston Technology How To Benefit Most From DDR4 Pasi Siukonen March 30, 2016 SR FIELD APPLICATION ENGINEER 2015 Kingston Technology Europe Co LLP and Kingston Digital Europe Co LLP. All rights reserved. All trademarks and registered trademarks are the property of their respective owners.
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Memory Roadmap (1987 2018) 1987-1990 FAST PAGE MODE EDO 1997-1999 PC66 PC100 PC133 2000 RDRAM PC600 PC700 PC800 2001-2003 DDR200 DDR266 DDR333 DDR400 RDRAM PC1066 2004-2005 DDR2-400 DDR2-533 DDR2-667 2006 DDR2-800 FB-DIMMs 2007-2009 DDR3-800 DDR3-1066 DDR3-1333 2010-2013 DDR3L 1.35V DDR3-1600 DDR3L-1600 DDR3-1866 LRDIMM 2014-2015 DDR4-2133 DDR4-2400 2016 2017 DDR4-2666 2018 DDR4-2933 Technology Data Rate Module Classification Peak Bandwidth DDR3 (1.5V) DDR3L (1.35V) DDR3U (1.25V) DDR4 (1.2V) 800 DDR3-800 / PC3-6400 6400 MB/s or 6.4 GB/s 1066 1333 1600 DDR3-1066 / PC3-8500 DDR3L-1066 / PC3L-8500 DDR3-1333 / PC3-10600 DDR3L-1333 / PC3L-10600 DDR3-1600 / PC3-12800 DDR3L-1600 / PC3L-12800 8500 MB/s or 8.5 GB/s 10600 MB/s or 10.6 GB/s 12800 MB/s or 12.8 GB/s 1866 DDR3-1866 / PC3-14900 14900 MB/s or 14.9 GB/s 2133 DDR4-2133 / PC4-2133 17000 MB/s or 17 GB/s 2400 DDR4-2400 / PC4-2400 19200 MB/s or 19.2 GB/s 2666 DDR4-2666 / PC4-2666 21300 MB/s or 21.3 GB/s 2933 DDR4-2933 / PC4-2933 23400 MB/s or 23.4 GB/s 3
New Module Key Location Form Factors 288-pin DIMM 260-pin SODIMM Performance 1600MT/s, 1866MT/s, 2133MT/s, 2400MT/s, 2666MT/s, 2933MT/s 4000MT/s (possible extension) 4266MT/s (possible extension) Power 1.2V with improved refreshes, ½K page for x4 12V for NVDIMM (4-pins) DRAM Densities/DIMM Capacities 4Gb, 8Gb, 16Gb (x4, x8, x16) Future DIMM capacities of 64GB, 128GB, 256GB New Features 3D chip stacking support (up to 8 stacked dies) Point-to-Point Memory Channel addressing More stable than DDR3 with improved error correction code Slightly thicker for improved performance Curved edge for better socket connection 4
Module Types For Server Platforms 288-pin DIMM Registered DIMM Load Reduced DIMM ECC Unbuffered DIMM 240-pin DIMM Registered DIMM Load Reduced DIMM ECC Unbuffered DIMM Optimizing Memory: DDR4 is NOT compatible with DDR3 based systems (module will not fit) Install memory in kits of identical modules according to memory architecture Configure all processors the same way for most bandwidth Do Not Mix Module Types within a server. Mixing DDR3 (1.5V) and DDR3L (1.35V) will default the memory to 1.5V. 5
Haswell-EP Intel Xeon E5-2600 v3 DDR4 Memory Speeds 1.2V Module Type (No Mixing in a Server) 1 DIMM per Channel 1 DPC 2 DIMMs per Channel 2 DPC 3 DIMMs per Channel 3DPC Registered DIMM (RDIMM) 2133 1866 1600 Load Reduced DIMM (LRDIMM) 2133 2133 1600 2133 Processor Model Determines Maximum Memory Speed 1866 6
Intel Xeon E5-2600 v3 DDR4 Memory Speeds Processor Model Determines Maximum Memory Speed 7
Performance Gains for Intel DDR4 Servers Bandwidth comparison using 32GB DDR3 and DDR4 Registered DIMMs Memory Speed 2600 2400 2200 2000 1800 1600 1400 1200 1000 2400 1866 28% 33% Xeon E5 v4 Xeon E5 v2 2133 1600 1600 50% 1066 1 DPC 2 DPC 3 DPC 8 Source: http://www.intel.com/performance
Optimizing Intel Xeon E5 v3 Servers DDR4 Server Intel S2600WT Ch 3 Ch 4 Ch 2 Ch 1 128GB 3DPC 1DPC 1DPC 3DPC 3DPC 1DPC 1DPC 3DPC 1 2 3 1 2 3 3 2 1 3 2 1 1 2 3 1 2 3 3 2 1 3 2 1 Ch 3 Ch 4 16 x KVR21R15S4/8 8GB DDR4-2133 RDIMMs 1Rx4 1.2v Ch 2 Ch 1 Unbalanced Configuration (128GB) Memory Bandwidth 67.464 GB/s E5-2650v3 CPU1 E5-2650v3 CPU2 31.41% (30.89 GB/s) Ch 3 Ch 4 Ch 2 Ch 1 Ch 3 Ch 4 Ch 2 Ch 1 2DPC 2DPC 2DPC 2DPC 2DPC 2DPC 2DPC 2DPC 1 2 3 1 2 3 3 2 1 3 2 1 1 2 3 1 2 3 3 2 1 3 2 1 E5-2650v3 E5-2650v3 Balanced Configuration (128GB) CPU1 CPU2 2 DIMMs Per Channel Memory Bandwidth 98.357 GB/s 9 Benchmark by SiSoftware SANDRA 2013.05.19.44 on Intel S2600WT
Intel S2600WT RAS Benchmark (Mirroring) 10
Comparing Unbalanced Configurations for Odd Capacity Goals Balanced configuration for both processors (2 DPC), we are able to achieve 92.083 GB/s. 128GB 128GB 256GB 16GBx16 Quad Channel Unbalanced by CPU 2 DPC balanced for CPU #1 and 1 DPC balanced for CPU #2, we are able to achieve 88.928 GB/s. 128GB 64GB 192GB 16GBx12 Quad Channel plus Dual Channel, CPU Balanced 2 DPC balanced for Channels 1 & 2 for both CPUs and 1DPC balanced for Channels 3 & 4 for both CPUs, we are able to achieve very similar results at 88.591 GB/s. 96GB 96GB 192GB 16GBx12 11
Why Add Channels and Increase The Memory Speed? 120 DDR3 & DDR4 Aggregate Server Memory Bandwidth 100 80 GB/s 60 40 DDR3-800 DDR3-1066 DDR3-1333 20 DDR3-1600 DDR3-1866 0 Single Channel (1 DIMM per CPU) 2 x 16GB = 32GB Dual Channel (2 DIMMs per CPU) 4 x 16GB = 64GB Quad Channel (4 DIMMs per CPU) 8 x 16GB = 128GB DDR4-2133 12 Benchmark by SiSoftware SANDRA 2013.05.19.44 on Intel DDR3 and DDR4 platforms
Channel Performance Gain for Intel DDR4 Servers Bandwidth comparison using 32GB DDR4 Load Reduced DIMMs running @ 2133MHz 100 98 80 60 40 26 51 Memory Bandwidth in GB/s 20 0 1 DIMM per processor 2 DIMMs per processor 4 DIMMs per processor 2 x Intel Xeon E2650 v3 on Intel Xeon S2600 Server with KVR21L15Q4/32 modules 13
Performance Gains for Intel DDR4 Servers Bandwidth comparison using 32GB DDR3 and DDR4 Load Reduced DIMMs Memory Speed 2600 2400 2200 2000 1800 1600 1400 1200 1000 2400 2400 28% 1866 Xeon E5 v4 Xeon E5 v2 50% 1866 1600 75% 1066 1 DPC 2 DPC 3 DPC 15 Source: http://www.intel.com/performance
Kingston Memory Search on kingston.com for DRAM search filters system configuration and supported upgrades Kingston upgrades 16
Need help? Contact configuration experts with Ask An Expert All KingstonConsult services are offered free of charge following qualification and do not require you to be a current Kingston customer. KingstonConsult offers you an independent opinion on whether the memory configuration you are currently using or are planning to use is balanced and optimised for your organisation. Please contact us to discuss your server configuration via our email address: KingstonConsult@kingston.eu and benefit from Kingston s nearly 30 years of industry-leading configuration expertise. 17
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