American Megatrends Goliath, Руководство пользователя

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Chapter 1 Hardware Installation 17
Step 3 Install Memory,
Continued
The DIMMs in Goliath are different from the x 36 SIMMs used by all other
boards. The memory modules in the Goliath are a new JEDEC-standard
defined for 8-byte wide common CAS memory and supported by most memory
manufacturers. Most new computers that require a large amount of memory
(such as servers) use DIMMs. The maximum DIMM height should be 1.5” so
PCI slots are not blocked.
Memory Specifications
Item Description
General 3.3 volt, 168 pin, x 72, ECC DIMM (Dual Inline Memory Module)
buffered memory module, fast page mode (or EDO), 60 ns.
Voltage The memory chips used on the module must be 3.3 volt parts.
Pinout The module pinout is 168 pin (instead of 72 pins on SIMMs).
Data Bits The memory modules are 72 data bit modules
No ECC It is “raw” single CAS DRAM. There is NO ECC logic on the memory
module. ECC (Error Correction Code) is implemented in the
motherboard chipset. ECC does not require parity chips.
Buffers 3.3V volt buffers (typically 163244 or 16244LVT) are used to buffer the
CAS, Address lines, and Write enables.
The x 72 ECC modules are buffered. The Goliath memory card cannot
use unbuffered memory modules.
Mode Goliath uses fast page mode modules. EDO (Extended Data Out) is a
superset of fast page mode. EDO memory modules can be installed, but
the EDO feature is not used.
DIMM Types 1 MBx72, 2 MBx72, 4 MBx72, 8 MBx72, and 16 MBx72.
Speed 60 ns
Maximum Memory Up to eight DIMMs can be installed to provide up to 1GB of system
memory. The minimum memory configuration should be 4 MB x 72 DIMMs
(128 MB of system memory). You cannot mix memory types within a memory
bank.
Cont’d