The next generation of DDR3L has arrived. New chipsets and processors from AMD® and Intel® now support low-voltage memory operating at 1600MT/s (aka 1600MHz). DDR3L-1600 memory has a module classification of PC3L-12800, which effectively means that the peak data rate of the module is 12.8GB/sec (see table). That’s approximately a 17 per cent improvement on memory bandwidth over DDR3L-1333.
||Module Peak Bandwidth
||6400 MB/sec. or
|8500 MB/sec. or
|10600 MB/sec. or
||12800 MB/sec. or
||14900 MB/sec. or
- In servers, the processor model number affects how fast the memory can operate. Higher model numbers support 1600MT/s, but may be limited by the number of DIMMs per channel that are installed.
- Some entry-level mobile and desktop processors, such as the Intel Core i3, may not support 1600MT/s memory.
Step 1 – Know Your System
Only the latest generation of chipsets and processors support DDR3L-1600 memory.
Quad-channel memory architecture
- Intel Xeon™ E5 v2
- C600 Series Chipset
Dual-channel memory architecture
- 4th Generation Intel Core family processors on 8-Series motherboards
- Z87, Q87, HM87, QM87
- AMD AM3+ A-Series / FX Series APUs on 9-Series motherboards
- 990X , 990FX, 980G, 970
- AMD® A10-M, A8-M and A6-M series mobile APUs on 9-Series motherboards
• Available low voltage capacities at 1600MT/s are:
- 4GB, 8GB SODIMMs (mobile)
- 4GB, 8GB unbuffered non-ECC DIMMs (desktop)
- 2GB, 4GB, 8GB ECC DIMMs (workstation/server)
- 4GB, 8GB ECC SODIMMs (micro server)
- 4GB, 8GB, 16GB registered ECC DIMMs (server)
Step 2 – Maximise Server Memory Performance
New Xeon E5 v2 and AMD Opteron 6300 servers support up to 2 DIMMs per channel at low voltage (See table)
|Xeon E5 v2 / AMD Opteron 6300
|1 DIMM per
Channel (1 DPC)
|2 DIMMs per
Channel (2 DPC)
Step 3 – Determine the memory bandwidth for your applications
- DDR3L-1600 effectively increases bandwidth over DDR3L-1333 by approximately 17 per cent.
- Quad-channel architectures such as those supported on Xeon E5 v2 and Opteron 6300 platforms increase memory bandwidth by up to 35 per cent 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, video games, and many more.