Hardware Spec Index

Lumora DR-3971 Ultra DDR5-6400 64GB (2×32GB) CL34 SO-DIMM Kit

Memory · Lumora · SKU DR3971-ULTRA · Released 2023 · Updated 2026-10-21

Key facts

Benchmark index5,632 (Memory scale)
Category rank#43,310
Street price$149
Power9 W
Performance per dollar37.80
Released2023

Specifications

BrandLumora
ModelLumora DR-3971 Ultra
Memory typeDDR5 SO-DIMM (262-pin)
SpeedDDR5-6400 (6,400 MT/s)
Kit capacity64 GB (2 × 32 GB)
Timings34-38-38-95
CAS latencyCL34
First-word latency10.63 ns
Voltage1.35 V
ProfileAMD EXPO
ECCOn-die ECC (not system ECC)
Power managementOn-module PMIC
Heat spreaderNone (low profile)

Related guides

DDR5 Memory ExplainedDDR4 vs DDR5CAS Latency (CL) and RAM TimingsXMP vs EXPO

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Cite this page: Hardware Spec Index, “Lumora DR-3971 Ultra DDR5-6400 64GB (2×32GB) CL34 SO-DIMM Kit”, https://vextor7.com/item/6865804 (accessed 2026-10-21).