Datasheet
5-8
S
UPERSERVER 8015C-T User's Manual
Memory Support
The X7QCE supports up to 192 GB fully buffered (FBD) ECC DDR2 667/533 in
24 DIMM slots (four channels, two branches). Single channel memory, two-way
interleaved memory and four-way interleaved memory schemes are all supported.
Using four-way interleaved memory will result in the best performance. Please use
memory modules of the same type, speed, timing and same on a serverboard.
Note: See the following table for memory installation.
Installing Memory Modules
Insert the desired number of Fully Buffered DDR2 modules into the memory
slots, starting with DIMM #A1. To enhance memory performance, install pairs
of memory modules of the same type and of the same, beginning with DIMM
#A1 and DIMM #A2, then DIMM #B1 and DIMM #B2 (see Memory Support
above).
Insert each DIMM module vertically into its slot. Pay attention to the notch
along the bottom of the module to avoid installing incorrectly (see Figure 5-4).
Gently press down on the DIMM module until it snaps into place in the slot.
Repeat for all modules.
1.
2.
3.
!
CAUTION! Exercise extreme care when installing or removing DIMM
modules to prevent any possible damage.
5-6 Installing Memory
Memory Configuration Table
Branch 0
Branch 1
Channel 0 (Bank 0) Channel 1 (Bank 1)
Channel 2 (Bank 2) Channel 3 (Bank 3)
2 DIMMs A1 --- --- --- --- --- B1
--- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- ---
4 DIMMs A1 --- --- --- --- --- B1
--- --- --- --- --- C1 --- --- --- --- --- D1 --- --- --- --- ---
8 DIMMs A1 A2 --- --- --- --- B1
B2 --- --- --- --- C1 C2 --- --- --- --- D1 D2 --- --- --- ---
12
DIMMs
A1 A2 A3 --- --- --- B1
B2 B3 --- --- --- C1 C2 C3 --- --- --- D1 D2 D3 --- --- ---
16
DIMMs
A1 A2 A3 A4 --- --- B1
B2 B3 B4 --- --- C1 C2 C3 C4 --- --- D1 D2 D3 D4 --- ---
18
DIMMs
A1 A2 A3 A4 A5 --- B1
B2 B3 B4 B5 --- C1 C2 C3 C4 C5 --- D1 D2 D3 D4 D5 ---
24
DIMMs
A1 A2 A3 A4 A5 A6 B1
B2 B3 B4 B5 B6 C1 C2 C3 C4 C5 C6 D1 D2 D3 D4 D5 D6
Notes: 1. “---“ indicates unpopulated DIMM slot. 2. Both DDR 533MHz and 668MHz FBD are
supported; however, please insert memory modules of the same type and same speed, starting with slot
A1. 3. Installing pair(s) of memory modules of the same type and the same speed will result in
interleaved memory. For best performance, please install pairs of memory modules in both Branch 0
and Branch 1, which will result in four-way interleaved memory.