Supermicro C9Z790-CG - Memory Support and Installation

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Super C9Z790-CG/-CGW 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.
• When installing only two memory modules, please use DIMMA2 and DIMMB2.
• To optimize memory performance, please use DDR5 memory of the same type, size, and
speed on the motherboard.
• 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.
C9Z790-CGW
DESIGNED IN USA
REV:1.00
MAC CODEMAC CODE BAR CODE
BIOS
LICENSE
PCH
JLED_POGO2
JLED_POGO1
JRLED2
JRLED1
JTPM1
JLED_IO
SW1
JSTBY1
JD1
JSD1
JPW1
LED4801
LED18
LED17
LED1
LED3
LED2
JPW2
JL1
LED4
JPME2
JLED1
SYS_FAN1
SYS_FAN2
JWD1
22110
22110
2260
2280
PCH SLOT1 PCIe 3.0 X1
USB12 (3.2, 20Gb)
USB7 (3.2, 20Gb)
USB6 (3.2, 10Gb)
M.2-C1
12V_PUMP_PWR1
USB9 (3.2, 20Gb)
USB8 (3.2, 10Gb)
2280
SP1
B1
2260
2260
2280
BOOT LED
VGA LED
DIMM LED
CPU LED
DP/HDMI
LAN2
LAN1
JF1
AUDIO FP
COM1
USB4/5
USB10/11
(3.2, 5Gb)
M.2-P1
PCH SLOT5
PCIe
3.0 X1
CPU SLOT4
PCIe
5.0 X8 (IN X16)
CPU SLOT7
PCIe
5.0 X16
M.2-P2
SYS_FAN3
HD AUDIO
USB0/1/2/3
POWER
BUTTON
DIMMB1
DIMMB2
DIMMA1
DIMMA2
RESET
BUTTON
CPU_FAN1 CLEAR CMOS
CPU_FAN2
I-SATA4
I-SATA5
I-SATA2
I-SATA3
I-SATA0
I-SATA1
M.2-E1 (CNVi)
DIMMA1
DIMMA2
DIMMB1
DIMMB2