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Hardware Installation
Note:
• When only one DIMM per channel is used, it must be populated in memory slot DIMM1.
EPYC Memory Speed based on DIMM Population (Two DIMM per Channel)
1-4-4 Memory Population Table
DIMM
Type
DIMM Population
Max EPYC 9004
DDR5 Frequency (MT/s)
DIMM 0 DIMM 1
RDIMM
-- 1R 4800
1R 1R 4400
-- 2R 4800
1R 2R 4000
2R 2R 4000
3DS
-- 2S2R (4 Ranks) 4800
-- 2S4R (8 Ranks) 4800
-- 2S8R (16 Ranks) 4800
2S2R (4 Ranks) 2S2R (4 Ranks) 4000
2S4R (8 Ranks) 2S4R (8 Ranks) 4000
2S8Rx4 (16 Ranks) 2S8Rx4 (16 Ranks) 4000
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