Altrix CX-4991 Prime 20-Core LGA1851 Desktop Processor
Processors · Altrix · SKU CX4991-PRIME · Released 2026 · Updated 2026-10-26
Key facts
| Benchmark index | 45,213 (Processors scale) |
|---|---|
| Category rank | #25,574 |
| Street price | $559 |
| Power | 125 W (TDP) |
| Performance per dollar | 80.88 |
| Released | 2026 |
Specifications
| Brand | Altrix |
|---|---|
| Model | Altrix CX-4991 Prime |
| Socket | LGA1851 |
| Cores / threads | 20 cores (8P + 12E) / 20 threads |
| Base clock | 2.7 GHz |
| Max boost clock | 5.4 GHz |
| L3 cache | 30 MB |
| Power | 125 W base / 250 W max turbo |
| Memory support | DDR5-6400, dual channel (CUDIMM supported) |
| CPU PCIe lanes | 20× PCIe 5.0 + 4× PCIe 4.0 |
| Integrated graphics | None (F model) |
| Unlocked multiplier | Yes |
| NPU | 13 TOPS |
| Cooler included | No |
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, “Altrix CX-4991 Prime 20-Core LGA1851 Desktop Processor”, https://vextor7.com/item/31495267 (accessed 2026-10-26).