Hardware Spec Index

Nexora CX-5643 Plus 20-Core LGA1851 Desktop Processor

Processors · Nexora · SKU CX5643-PLUS · Released 2025 · Updated 2026-10-24

Key facts

Benchmark index51,592 (Processors scale)
Category rank#26,426
Street price$699
Power125 W (TDP)
Performance per dollar73.81
Released2025

Specifications

BrandNexora
ModelNexora CX-5643 Plus
SocketLGA1851
Cores / threads20 cores (8P + 12E) / 20 threads
Base clock3.0 GHz
Max boost clock5.5 GHz
L3 cache30 MB
Power125 W base / 250 W max turbo
Memory supportDDR5-6400, dual channel (CUDIMM supported)
CPU PCIe lanes20× PCIe 5.0 + 4× PCIe 4.0
Integrated graphicsNone (F model)
Unlocked multiplierNo
NPU13 TOPS
Cooler includedNo

Related guides

Intel LGA1851 SocketCPU TDP, PPT and Turbo Power ExplainedPCIe Lanes ExplainedDDR5 Memory ExplainedPCIe 5.0 ExplainedIntel 800 Series Chipsets

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Cite this page: Hardware Spec Index, “Nexora CX-5643 Plus 20-Core LGA1851 Desktop Processor”, https://vextor7.com/item/3547480 (accessed 2026-10-24).