Hardware Spec Index

Lumora DR-7991 XT DDR5-8400 64GB (4×16GB) CL40 Kit

Memory · Lumora · SKU DR7991-XT · Released 2024 · Updated 2026-10-26

Key facts

Benchmark index7,784 (Memory scale)
Category rank#46,597
Street price$309
Power22 W
Performance per dollar25.19
Released2024

Specifications

BrandLumora
ModelLumora DR-7991 XT
Memory typeDDR5 UDIMM (288-pin)
SpeedDDR5-8400 (8,400 MT/s)
Kit capacity64 GB (4 × 16 GB)
Timings40-44-44-100
CAS latencyCL40
First-word latency9.52 ns
Voltage1.40 V
ProfileXMP 3.0 + EXPO
ECCOn-die ECC (not system ECC)
Power managementOn-module PMIC
Heat spreaderAluminum, no lighting

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-7991 XT DDR5-8400 64GB (4×16GB) CL40 Kit”, https://vextor7.com/item/2355340 (accessed 2026-10-26).