Gigabyte H273-Z80-AAN1 User Manual page 116

Hci server – amd epyc 9004 dp 2u 4-node server 8 x gen4 nvme/sata 2600w (aan1) and hci server – amd epyc 9004 dp 2u 4-node server 24 x gen4 nvme/sata 3000w (aaw1)
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Parameter
Processor ODT impedance
Dram DQ drive strengths
Description
Select the ODT impedance for all DBYTE IOs.
Options available: Auto, High Impedance, 480 ohm, 240 ohm, 160 ohm,
120 ohm, 96 ohm, 80 ohm, 68.6 ohm, 60 ohm, 53.3 ohm,48 ohm, 43.6 ohm,
40 ohm, 36.9 ohm, 34.3 ohm, 32 ohm, 30 ohm, 28.2 ohm, 26.7 ohm,
25.3 ohm. Default setting is Auto.
Select the Dram Pull-up and Pull-Down Output Driver Impedance for all DQ
and DMI IOs..
Options available: Auto, 48 ohm, 40 ohm, 34 ohm, Default setting is Auto.
BIOS Setup
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