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Chapter 2: Overview
2-7
Motherboard Features
CPU
Two Intel•
®
5500/5600 Series (LGA 1366) processors; each processor sup-
ports two full-width Intel QuickPath Interconnect (QPI) links with a total of
up to 51.2 GT/s Data Transfer Rate (6.4 GT/s per direction)
Memory
RDIMM•
240-pin Reg. DDR3 ECC 1333/1066/800 MHz memory with support of up •
to 288 GB in 18 slots
Note 1. 240-pin Dual Rank (DR) 16 GB Reg. ECC DDR3 1333/1066/800
MHz memory will support up to 288 GB. Memory speed will be downgraded
to 800 MHz. (Refer to the notes in the memory confi guration tables in
Chpt. 3.)
Note 2. 240-pin Quad Rank (QR) 16 GB Reg. ECC DDR3 1066/800 MHz
memory will support up to 192 GB (with 6 DIMMs max. per CPU). Memory
speed will be downgraded to 800 MHz. (Refer to the notes in memory
confi guration tables in Chpt. 3.)
LRDIMM (Load Reduced DIMM, for X8DTU-6F+-LR and 8XDTU-6TF+-LR
•
Only)
DDR3 ECC 1066 MHz memory with support of up 288 GB in 18 slots
•
Warning: For your system memory to work properly, be sure to use the
correct BIOS ROM for your system.
For the X8DTU+-6F+, use the X8DTU+-6F+BIOS. For the X8DTU+-6F+-
LR, use the X8DTU+-6F+-LR BIOS.
For the X8DTU+-6TF+, use the X8DTU+-6TF+ BIOS. For the X8DTU+-
6TF+-LR, use the X8DTU+-6TF+-LR BIOS.
To fl ash the BIOS, refer to http://www.supermicro.com/products/mother-
board/QPI/5500/X8DTU_.cfm?IPMI=Y.
UDIMM
•
Unbuffered ECC/Non-ECC DDR3 1333/1066/800 MHz memory of up to
•
48 GB memory
DIMM Sizes
UDIMM 1 GB, 2 GB, and 4GB•