ROG STRIX Z490-H GAMING BIOS Manual
19
DRAM Odd Ratio Mode
This item allows you to enable or disable availability of odd DRAM ratios for improved
granularity.
Configuration options: [Enabled] [Disabled]
DRAM Frequency
This item allows you to set the memory operating frequency. The configurable options vary
with the BCLK (base clock) frequency setting. Select the auto mode to apply the optimized
setting.
Configuration options: [Auto] [DDR4-800MHz] - [DDR4-8533MHz]
CPU SVID Support
Disable this item to stop the CPU from communicating with the external voltage regulator.
We recommend setting this item to
[Disabled]
for overclocking.
Configuration options: [Auto] [Disabled] [Enabled]
DRAM Timing Control
The sub-items in this menu allow you to set the DRAM timing control features. Use the
<+> and <-> keys to adjust the value. To restore the default setting, type
[Auto]
using the
keyboard and press the <Enter> key.
Changing the values in this menu may cause the system to become unstable! If this
happens, revert to the default settings.
Primary Timings
DRAM CAS# Latency
Configuration options: [Auto] [1] - [31]
DRAM RAS# to CAS# Delay
Configuration options: [Auto] [1] - [63]
DRAM RAS# ACT Time
Configuration options: [Auto] [1] - [63]
DRAM Command Rate
Configuration options: [Auto] [1N] [2N] [3N] [N:1]
The following item appears only when
DRAM Command Rate
is set to
[N:1]
.
N to 1 ratio
Number of bubbles between wach valid command cycle.
Configurations: [4] - [7]
Secondary Timings
DRAM RAS# to RAS# Delay L
Configuration options: [Auto] [1] - [15]
DRAM RAS# to RAS# Delay S
Configuration options: [Auto] [1] - [15]
DRAM REF Cycle Time
Configuration options: [Auto] [1] - [1023]
