Hardware Spec Index

Caldera DR-9639 Ultra DDR5-6400 48GB (2×24GB) CL34 Kit

Memory · Caldera · SKU DR9639-ULTRA · Released 2023 · Updated 2026-10-20

Key facts

Benchmark index5,497 (Memory scale)
Category rank#28,619
Street price$149
Power9 W
Performance per dollar36.89
Released2023

Specifications

BrandCaldera
ModelCaldera DR-9639 Ultra
Memory typeDDR5 UDIMM (288-pin)
SpeedDDR5-6400 (6,400 MT/s)
Kit capacity48 GB (2 × 24 GB)
Timings34-38-38-95
CAS latencyCL34
First-word latency10.63 ns
Voltage1.35 V
ProfileIntel XMP 3.0
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, “Caldera DR-9639 Ultra DDR5-6400 48GB (2×24GB) CL34 Kit”, https://vextor7.com/item/4765152 (accessed 2026-10-20).