Memory Support And Installation; General Guidelines For Optimizing Memory Performance - Supermicro C9Z490-PG User Manual

Super C9Z490-PG/-PGW User's Manual

2.4 Memory Support and Installation

Note: Check the Supermicro website for recommended memory modules.
Important: Exercise extreme care when installing or removing DIMM modules to pre-
vent any possible damage.

General Guidelines for Optimizing Memory Performance

•
When installing memory modules, the DIMM slots should be populated in the following
order: DIMMA2, DIMMB2, then DIMMA1, DIMMB1.
•
Only populate DIMMA1 and DIMMB1 if the extra memory support is needed.
•
Always use DDR4 memory of the same type, size and speed.
•
Mixed DIMM speeds can be installed. However, all DIMMs will run at the speed of the
slowest DIMM.
•
The motherboard will support odd-numbered modules (one or three modules installed).
However, to achieve the best memory performance, a balanced memory population is
recommended.
MAC CODE
MAC CODE
JI2C2
BAR CODE
MH10
JI2C1
MH11
MH12
JSTBY1
PCIE M.2-M1
LED3
JL1
MH14
CPU LED
DIMM LED
Super I/O
VGA LED
BOOT LED
JLED1
JWD1
10G LAN
Controller
HD AUDIO
JRLED1
SYS_FAN3
MH15
1
3
MH13
B1
PLX
BIOS PCIE M.2-M2
LICENSE
C9Z490-PGW
REV:1.01
DESIGNED IN USA
PCH
USB12 (3.2(10Gb))
I-SATA2 I-SATA0
I-SATA3 I-SATA1
SYS_FAN2
30
USB8 (3.2(10Gb))
USB9 (3.2(20Gb))
LAN2 LAN1
USB6/7 (3.2(10Gb)) USB4/5 (3.2(5Gb))
WiFi+BT
LAN Controller
LED18
LED17
DIMMA1
DIMMA2
DIMMB1
DIMMB2
POWER
BUTTON
JPW1
DP/HDMI
12V_PUMP_PWR1
DIMMA1
DIMMA2
DIMMB1
DIMMB2
CPU_FAN1
RESET
BUTTON
CLEAR CMOS
SYS_FAN1