Source: Tom's Hardware UK – Keywords: Skulltrail, QX9775, D5400XS, Octo-Core
Categories: Hardware
Memory – Quad-Channel with FB-DIMMs
Since the D5400XS motherboard is equipped with the 5400 workstation chipset which supports neither DDR2 nor DDR3 memory, the Skulltrail system can only be equipped with FB-DIMM modules. Fully Buffered modules were originally developed for use in workstation and server systems and was never meant to find its way into desktop computers.
At their core, FB-DIMMs are basically a refined type of DDR2 memory that uses a serial data connection to the memory controller instead of a parallel one. This makes it completely incompatible with standard DDR2 and DDR3 memory.
Compared to DDR2 and DDR3 memory, FB-DIMMs implement more error correction protocols. While this is positive for data integrity (think server environments, here), the downside is that they also cause a performance hit and cannot be turned off.
Even the temperatures of the FB-DIMM modules can be monitored.
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