Chassis/Enclosure Considerations; Power Supply Considerations - TYAN TIGER I7525 User Manual

Tiger i7525 (S2672)
2.3 – Chassis/Enclosure Considerations
Motherboard size
Tiger i7525 (S2672) board is in the board size of 12" (W) x9.6" (L).
Motherboard and CPU Heat-sink Mounting Holes
There are six motherboard-mounting holes and eight CPU heat-sink mounting holes on
Tiger i7525 (S2672) board design. The motherboard and CPU mounting hole locations
follow SSI EEB v3.51 (A Server System Infrastructure specification for Entry Pedestal
Servers and Workstations) specifications. Ensure that your chassis supports those 6
motherboard-mounting holes to secure the motherboard.
Tiger i7525 (S2672) supports Intel's CEK (Common Enabling Kit) for securing Intel's
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Xeon 800 MHz FSB processors in the chassis. Two CEK springs for the dual
processors are pre-assembled with the motherboard or enclosed in the motherboard
accessory package. The CPU heat-sinks must be mounted down to the chassis base
pan with stand-offs. Any additional chassis standoffs, besides the 6 motherboard-
mounting holes and 8 CPU heat-sink mounting holes, should be removed to preventing
from short-circuit or motherboard damage.
Others
As a system integrator, the air-flow/thermal, EMI/EMC, shock/vibration, and system
packing should be also considered for choosing a proper enclosure.
2.4 – Power Supply Considerations
Power connectors
Tiger i7525 (S2672) board supports EPS/12V power supply unit (PSU) with three power
connectors listed below.
EPS/12V Power Connectors
24-pin system power connector
Optional Power Connector
6-pin Workstation power connector (for x16 PCI-Express graphics card)
Split processor power planes
Tiger i7525 (S2672) board supports dual Intel's 800 MHz FSB Xeon
could reach up to 140 Watts per processor. (Check Intel's web for the processor
specifications.) By following SSI EEB v3.51 specifications, Tiger i7525 (S2672) is
designed with two separate voltage regulator circuits to provide the power for both
onboard processors in separate power rail. Using a power supply with a combined
CPU power plane from the CPU power connector, is not allowed and may cause
system failed to power up or a damage to power supply.
Chapter 2: Board Installation
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8-pin CPU power connector
(split CPU power planes)
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processors, which