QUANTA W Mainboard Series S210-MBT2W, Technical Manual

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A
BOUT THE
S
ERVER
P
ROCESSOR
1-7
[1.3.32] Processor
[1.3.33] The S210-MBT2W baseboard supports Sandy Bridge
–EP Processor (SNB-EP) and Ivy Bridge –EP Processor (IVB-
EP). The board include dual Socket –Rs and EVRD 12.0s that
support up to 150W TDP Processors for the S210-MBT2W.
This is accomplished by using a 6-phase VR12 design to sup-
port 150W on S210-MBT2W Server SKU.
[1.3.34] Overview of the Proces-
sors
[1.3.35] The SNB –EP and IVB –EP are composed of up to 8
cores and 10 cores respectively. The microprocessors include
an integrated DDR3 memory controller (IMC) with four memory
channels which can support up to three ECC Registered
DIMMs or three Un-buffered DIMMs (ECC or non-ECC) per
memory channel, an integrated I/O controller with 40 PCI
Express Gen3 lanes controlled by ten PCI Express Master Con-
trollers. The target TDPs are: 50W, 60W, 70, 80W, 95W and
135W for servers.
[1.3.37] The S210-MBT2W baseboards must support the IVB –
EP processor as a drop in. Board designers must be aware that
the IVB –EP controller has a lower Processor VTT and VPLL
rail voltage set point than SNB –EP. To dynamically adjust the
Processor VTT and VPLL output voltages, a pin has been
defined on Socket –R to identify IVB –EP processors. The sig-
nal: IVB_PRESENT_N is pulled up to Processor VTT when a
SNB –EP controller is present and it is grounded when an IVB –
EP controller is placed on the board. Socket –R sideband sig-
nals that operate from the VTT power well and are connected to
other parts of the baseboard must be translated taking into
account the lower processor VTT voltage level set point (i.e. V
(typical) = 1.0V, V(max) = 1.03V, V(low) = 0.95V). It must also
be noted that the IVB_PRESENT_N signal cannot be pulled up
to 3.3V but must be kept at a maximum voltage level of 1.05V
due to signal integrity requirements of signals adjacent to
IVB_PRESENT_N. This is accomplished by using a voltage
divider from the 3.3V voltage rail.
[1.3.38] Processor Mismatch
[1.3.39] The S210-MBT2W baseboard must prevent the base-
board from booting if SNB –EP and IVB-EP processors are
mixed into the system. The BMC will log an error in the SEL.
Note:
[1.3.36] 150W SKU is for Extreme Server SKUs.