Ryzen 9 9900X vs EPYC 4545P
Ryzen 9 9900X
EPYC 4545P
Performance Spectrum - CPU
About PassMark
PassMark CPU Mark evaluates processor speed through complex mathematical computations. It provides a reliable metric to compare multi-core performance, where higher scores indicate faster processing for multitasking, gaming, and heavy workloads.
Value Upgrade Path
This is the official ChipVERSUS Value Rating, comparing raw performance (PassMark) per dollar. Components placed above yours deliver better value for money.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Ryzen 9 9900X
Performance Per Dollar EPYC 4545P
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Ryzen 9 9900X | EPYC 4545P |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ✅ More affordable ($370) | ⚠️ Higher cost ($595) |
| Longevity | ✨ Modern (Granite Ridge (2024−2025) / 4 nm) | ✨ Modern (Grado (2025) / 4 nm) |
💎 Value Proposition
| Insight | Ryzen 9 9900X | EPYC 4545P |
|---|---|---|
| Cost Efficiency | ✅ Better overall value (+62%) | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($370) | ⚠️ Higher cost ($595) |
Performance Check
To accurately isolate CPU performance, all benchmarks below use an NVIDIA RTX 4090 as the reference GPU. This eliminates GPU-side bottlenecks and highlights pure processing throughput differences between the CPUs.
Note: Real-world results may vary based on your actual GPU. CPU performance impact is more visible in processing-intensive titles and high-refresh-rate gaming scenarios.
Technical Specifications
Side-by-side comparison of Ryzen 9 9900X and EPYC 4545P
Ryzen 9 9900X
The Ryzen 9 9900X is manufactured by AMD. It was released in 15 August 2024 (1 year ago). It is based on the Granite Ridge (2024−2025) architecture. It features 12 cores and 24 threads. Base frequency is 4.4 GHz, with boost up to 5.6 GHz. L3 cache: 64 MB (total). L2 cache: 1 MB (per core). Built on 4 nm process technology. Socket: AM5. Thermal design power (TDP): 120 Watt. Memory support: DDR5. Passmark benchmark score: 54,530 points. Launch price was $499.
EPYC 4545P
The EPYC 4545P is manufactured by AMD. It was released in 13 May 2025 (less than a year ago). It is based on the Grado (2025) architecture. It features 16 cores and 32 threads. Base frequency is 3 GHz, with boost up to 5.4 GHz. L3 cache: 64 MB (total). L2 cache: 1 MB (per core). Built on 4 nm process technology. Socket: AM5. Thermal design power (TDP): 65 Watt. Memory support: DDR5. Passmark benchmark score: 54,255 points. Launch price was $549.
Processing Power
The Ryzen 9 9900X packs 12 cores / 24 threads, while the EPYC 4545P offers 16 cores / 32 threads — the EPYC 4545P has 4 more cores. Boost clocks reach 5.6 GHz on the Ryzen 9 9900X versus 5.4 GHz on the EPYC 4545P — a 3.6% clock advantage for the Ryzen 9 9900X (base: 4.4 GHz vs 3 GHz). The Ryzen 9 9900X uses the Granite Ridge (2024−2025) architecture (4 nm), while the EPYC 4545P uses Grado (2025) (4 nm). In PassMark, the Ryzen 9 9900X scores 54,530 against the EPYC 4545P's 54,255 — a 0.5% lead for the Ryzen 9 9900X. Both processors carry 64 MB (total) of L3 cache.
| Feature | Ryzen 9 9900X | EPYC 4545P |
|---|---|---|
| Cores / Threads | 12 / 24 | 16 / 32+33% |
| Boost Clock | 5.6 GHz+4% | 5.4 GHz |
| Base Clock | 4.4 GHz+47% | 3 GHz |
| L3 Cache | 64 MB (total) | 64 MB (total) |
| L2 Cache | 1 MB (per core) | 1 MB (per core) |
| Process | 4 nm | 4 nm |
| Architecture | Granite Ridge (2024−2025) | Grado (2025) |
| PassMark | 54,530 | 54,255 |
| Cinebench R23 Multi | 33,003 | — |
| Geekbench 6 Single | 3,401 | — |
| Geekbench 6 Multi | 19,756 | — |
Memory & Platform
Both processors use the AM5 socket with PCIe 5.0. Maximum memory speed reaches DDR5-5600 on the Ryzen 9 9900X versus 5600 on the EPYC 4545P — the EPYC 4545P supports 199.6% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Ryzen 9 9900X supports up to 256 GB of RAM compared to 192 — 28.6% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 24 (Ryzen 9 9900X) vs 28 (EPYC 4545P) — the EPYC 4545P offers 4 more lanes for additional GPUs or NVMe drives. Chipset compatibility: A620,B650,X670,X870 (Ryzen 9 9900X) and AM5 (EPYC 4545P).
| Feature | Ryzen 9 9900X | EPYC 4545P |
|---|---|---|
| Socket | AM5 | AM5 |
| PCIe Generation | PCIe 5.0+25% | PCIe 4.0 |
| Max RAM Speed | DDR5-5600 | 5600+111900% |
| Max RAM Capacity | 256 GB+139810033% | 192 |
| RAM Channels | 2 | 2 |
| ECC Support | ✅ | ✅ |
| PCIe Lanes | 24 | 28+17% |
Advanced Features
Both processors feature an unlocked multiplier for overclocking. Both support AVX-512 instructions, benefiting scientific computing, AI inference, and encryption workloads. Virtualization support: AMD-V (Ryzen 9 9900X) vs VT-x, VT-d, AMD-V (EPYC 4545P). Both include integrated graphics — Radeon 610M (Ryzen 9 9900X) and AMD Radeon Graphics (EPYC 4545P) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Direct competitor: EPYC 4545P rivals Ryzen 9 7900X.
| Feature | Ryzen 9 9900X | EPYC 4545P |
|---|---|---|
| Integrated GPU | Yes | Yes |
| IGPU Model | Radeon 610M | AMD Radeon Graphics |
| Unlocked | Yes | Yes |
| AVX-512 | Yes | Yes |
| Virtualization | AMD-V | VT-x, VT-d, AMD-V |
Value Analysis
The Ryzen 9 9900X launched at $499 MSRP, while the EPYC 4545P debuted at $549. At current prices ($370 vs $595), the Ryzen 9 9900X is $225 cheaper. In terms of value (PassMark points per dollar), the Ryzen 9 9900X delivers 147.4 pts/$ vs 91.2 pts/$ for the EPYC 4545P — making the Ryzen 9 9900X the 47.1% better value option.
| Feature | Ryzen 9 9900X | EPYC 4545P |
|---|---|---|
| MSRP | $499-9% | $549 |
| Avg Price (30d) | $370-38% | $595 |
| Performance per Dollar | 147.4+62% | 91.2 |
| Release Date | 2024 | 2025 |
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