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Intel® Server Board Set SE8500HW4 Jumpers
Revision 1.0
Intel order number D22893-001
45
Servers connected to high-line power (200/208/220/230/240VAC) do not have a power
consumption threshold. Under these conditions, the J4G3 jumper should be set as follows:
100/110VAC rated circuit: Cover pins 2-3
115/120/127VAC rated circuit: Cover pins 1-2
200/208/220/230/240VAC rated circuit: Cover pins 1-2
The power consumption threshold is most likely to be exceeded when all of the following
conditions are met:
The server is connected to a low-line power circuit
The server has a single power supply installed
The server is fully configured with four processors, 16 x4 GB DIMMs, and all PCI slots
are filled
The server is running at maximum performance
If the power consumption threshold is crossed, the hardware throttles the processors to reduce
the power consumption to below the set threshold. The processor performance can be returned
to the full performance level by power cycling the server.
When two power supplies are installed, the required power is divided between them. By using
both circuits, the server can draw more power than the threshold limit for a single power supply.
The hardware reduces the amount of power consumed if one of the power supplies fails. This
ensures the system consumes less power than the threshold from the single operating power
supply. When a failed power supply is replaced, the system is again able to share the power
load and operate at full performance.
If the J4G3 jumper is set incorrectly, the following may occur:
If the jumper is covering pins 1-2 on a 100/110VAC circuit, the server is allowed to consume up
to 1350 watts. This setting may cause a circuit breaker to trip.
If the jumper is covering pins 2-3 on a 115/120/127VAC circuit, the server power consumption
threshold is set to 1100 watts. The lower power threshold may be exceeded, limiting system
performance.
6.1.2 Intel
®
Management Module
The BMC boot block area of the IMM flash device is physically protected by a jumper. This
jumper must be changed in order to enable updating the boot block. The BMC firmware transfer
code does sense the state of this jumper and will always allow writes to the boot block area. If
the jumper is not in the enabled position, the boot block writes will fail. Please refer to BMC
release notes and the Intel
®
Management Module Technical Product Specification for more
information.