XVME-6500
USER
’S MANUAL
Acromag, Inc. Tel: 248-295-0310
- 24 -
http://www.acromag.com
- 24 -
www.acromag.com
3.3 CPU
The Intel
®
Gen 4 (Haswell) CPU available on the XVME-6500 is a 2.4GHz quad-
core i7. This 64-bit, 22-nanometer CPU with integrated GT2 graphics contains
direct interfaces for DDR3L, DDI, and PCIe x16. In addition, the Direct Media
Interface (DMI) is used to connect to the QM87 Platform Control Hub (PCH).
•
DDR3L SDRAM
–
2 SODIMM sockets support up to 16GB of DDR3L
ECC at 1600MHz. Dual-channel mode is used with 2 SODIMMs. The
SODIMMs are attached to the module firmly with screws and
surrounded by heat sink material to provide a robust mechanism
both mechanically and thermally.
•
PCIe x8 (2)
–
Traditionally used for external graphics, but on the
XVME-6500 supports any PMC/XMC devices. One of the
connections is muxed with a PEX8114 PCIe > PCI-X bridge for PMC
vs. direct XMC connection. This bridge drives both PMC sites when
enabled, but the lower site may still contain an XMC module even if
the PMC bridge is enabled.
•
DVI-D
–
This digital display interface supports connection of both,
DVI-D or HDMI display devices.
•
Programmable CPU power limits
–
By simply programming a lower
power limit in the BIOS setup, the CPU can be used in applications
where less power is available or heat removal is an issue. This is
accomplished by the CPU automatically underclocking its frequency
to maintain a power level at the set limit.
3.3.1 Active Processor Core Selection
All of the CPU cores should be kept active in high-performance systems
requiring all available computing power. Conversely, applications having
reduced power requirements can save power by disabling one or more of the
CPU cores. The number of active CPU cores can be specified in the CPU
configuration menu. More details about this feature are provided in
The
APTIO Haswell Core BIOS Manual For Acromag Products
.
3.3.2 Turbo Boost Configuration
By default Turbo Mode is enabled in the BIOS setup screen. Turbo Mode
allows the CPU to go beyond the rated nominal clock frequency when there is
headroom from the maximum Thermal Design Power of the CPU. This results
in the highest available performance, but with a larger, more dynamic power
draw during peak operations. More details about this feature are provided in
The APTIO Haswell Core BIOS Manual For Acromag Products
.
3.3.3 PCI Express Graphics (PEG)
The x16 PEG interface is bifurcated into 2 x8 general PCIe ports that connect
the Intel®4
th
Gen (Haswell) processor to the PMC/XMC Expansion Sites.
Lanes [0:7] connect directly to the Lower XMC Site's J15 connector.
