Languages Business Resources Where To Buy
Memory
SSD
USB Drives
Flash Cards
Wireless
Support
MEMORY SEARCH

Best Practices

Why 1866?

The next generation of DDR3 has arrived. New chipsets and processors from AMD® and Intel® now support memory operating at 1866MT/s (aka 1866MHz). DDR3-1866 memory has a module classification of PC3-14900, which effectively means the peak data rate of the module is 14.9GB/s (see table). That’s approximately a 14-percent improvement on memory bandwidth over DDR3-1600.

Technology MHz Speed
(Data Rate)
Module Classification Module Peak Bandwidth
DDR3 (1.5V)
DDR3L (1.35V)
DDR3U (1.25V)
800 (DDR3-800) PC3-6400 6400 MB/sec. or
6.4 GB/sec.
1066 (DDR3-1066) PC3-8500
PC3L-8500
8500 MB/sec. or
8.5 GB/sec.
1333 (DDR3-1333) PC3-10600
PC3L-10600
10600 MB/sec. or
10.6 GB/sec.
1600 (DDR3-1600) PC3-12800
PC3L-12800
12800 MB/sec. or
12.8 GB/sec.
1866 (DDR3-1866) PC3-14900 14900 MB/sec. or
14.9 GB/sec.

In servers, the processor model number affects how fast the memory can operate. Higher model numbers support 1866MT/s but may be limited by the number of DIMMs per Channel that are installed or by the type of server/workstation motherboard.

Step 1 — Know Your System

Only the latest generation of chipsets and processors support DDR3-1866 memory.

  • Quad Channel Memory Architecture
    - Intel Xeon™ E5 v2
    - C600 Series Chipset
    - AMD Opteron™ 6300 Series
  • Available capacities at 1866MT/s are:
    - 2GB, 4GB, 8GB ECC DIMMs (Workstation/Server)
    - 4GB, 8GB, 16GB Registered ECC DIMMs (Server)

Step 2 — Maximize Server Memory Performance

New Xeon E5 v2 and AMD Opteron 6300 servers support up to 1 DIMM per Channel (see table).

Xeon E5 v2 / AMD Opteron 6300 1.5V
Module Type Module Ranks
SR/DR=Single/Dual
1 DIMM per
Channel (1 DPC)
2 DIMMs per
Channel (2 DPC)
Registered
DIMM (RDIMM)
SR/DR 1866 1600

Step 3 — Determine the memory bandwidth for your applications

  • DDR3-1866 effectively increases bandwidth over DDR3-1600 by approximately 14 percent.
  • Quad Channel architecture such as those supported on Xeon E5 “v2” and Opteron 6300 platforms increases memory bandwidth by up to 35% over previous Triple Channel architecture.
  • Some applications may require the maximum memory bandwidth available, such as 3D applications, CG, CAD and mechanical/industrial design, technical and scientific computing, digital content creation and video games.

Conclusion

Find the Kingston memory you need. Contact your Kingston representative or Ask a Kingston Expert.