Artesyn ATCA-7470 Installation and Use (October 2014) - Manual (Page 125)

Functional Description
ATCA-7470 Installation and Use (6806800P15K) 125
 Standard Voltage (1.5V) and LVDDR3 (1.35V)
 Speed up to DDR3-1600 (PC3-12800) for standard voltage DDR3 modules
 Speed up to DDR3-1333 (PC3-10600) for low voltage LVDDR3 modules
 Prepared for Next Generation Xeon E5-2600 V2 processors with DDR3-1833 support
ATCA-7470 supports Low voltage LVDDR3 Memory which can work at Standard Voltage 1.5
and reduced Voltage of 1.35 V. You can use LVDDR3 to reduce power consumption and
improve the thermal performance of the blade.
Supported memory features:
 RAS features supported with ECC (mirroring, x8/x4 SDDC, Sparing, Scrubbing)
 Memory Error signaling for uncorrectable errors
 Memory Error signaling for correctable memory errors
 ADR feature to support persistent memory structures in DDR3 (asynchronous DRAM
refresh).
5.4 Platform Controller Hub (PCH)
The Next Generation Communications Platform Controller hub (codename Crystal Forest) Intel
DH8900CC PCH provides access between processors and the I/O subsystem. The PCH provides
two different complexes:
 PCH I/O-controller connected to DMI2 interface of CPU#0
- provides the standard I/O interfaces
 PCH PCIe endpoint device connected to x4 PCIe (Gen2) of CPU#1
- Provides 4 MAC devices
- Provides Intel Quick Assist Technology
When mixing DIMMs of different speed selections, BIOS setups the lowest speed for all
memory channels/DIMM slots on a per CPU level.
Mixing of Standard Voltage and LVDDR3 is possible and results in all DIMMs running at
Standard Voltage.