amd ryzen 9 5900x

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At a glance

Core specs we use for comparisons and CPU pairing — no need to decode database codes.

Cores / threads12 / 24Physical cores and logical threads (SMT / hyper-threading).

SocketAM4Motherboard CPU socket — must match for upgrades.

TDP105 WThermal design profile — size your cooler accordingly.

L3 cache64 MBLast-level cache — larger often helps latency-sensitive workloads.

PCIe (CPU)Gen 4Maximum PCIe generation from platform specs when available.

MemoryDDR4Supported memory generation for the CPU platform.

Clocks3.7 GHz base · 4.8 GHz boostFrom our catalog metadata when the source reported them.

Play index53Normalized score (0-100) weighted toward single-thread performance and interactive, real-time play workloads. Catalog percentile: 51.

Work index42Normalized score (0-100) weighted toward multi-core throughput and parallel professional workloads. Catalog percentile: 47.

Balanced score48Blend of play and work scores.

Efficiency score49Performance-per-watt percentile (normalized 0-100).

Value score

48/100Budget

Composite percentile among desktop CPUs in our catalog — same band as the Rank column on the CPU index. Tier label: Budget.

How we score

Numbers on this page use a 0–100 scale for comparison. Rankings follow our internal formulas from published specs.

Play index — single-thread and cache-friendly behavior for interactive play.
Work index — multi-thread throughput for creative apps and parallel work.
Balanced score — blend of play and work strength.
Efficiency score — performance per watt (thermals, noise, power).
Value score — composite percentile vs other desktop CPUs in our catalog (matches the index Rank badge).

Where to buy

When we have them, partner offers with prices appear above. Under that, pick a region and store—we open a search for this CPU so you can compare listings and check stock.

United States

Amazon (US)eBay (US)

United Kingdom

Amazon (UK)eBay (UK)

Each link opens that store's search in a new tab. Prices and availability change often and depend on the seller and region.

GPUs that pair well

Ranked picks from our GPU catalog and pairing engine (scores + balance heuristics). Each card opens RankedGPU in a new tab for full specs and deals.

Pricing context

Reference pricing only — always confirm live retailer pricing before buying.

Manufacturer's Suggested Retail Price (reference): $549 USD