Ryzen 9 7945HX vs EPYC 4545P
Ryzen 9 7945HX
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 7945HX
Performance Per Dollar EPYC 4545P
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Ryzen 9 7945HX | EPYC 4545P |
|---|---|---|
| Gaming | Balanced gaming performance | Balanced gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ✅ More affordable ($0) | ⚠️ Higher cost ($595) |
| Longevity | ✨ Modern (Dragon Range-HX (Zen 4) (2023−2024) / CCD = 5 nm, I/O = 6 nm) | ✨ Modern (Grado (2025) / 4 nm) |
💎 Value Proposition
| Insight | Ryzen 9 7945HX | EPYC 4545P |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($0) | ⚠️ 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 7945HX and EPYC 4545P
Ryzen 9 7945HX
The Ryzen 9 7945HX is manufactured by AMD. It was released in 2023-03-12. It is based on the Dragon Range-HX (Zen 4) (2023−2024) architecture. It features 16 cores and 32 threads. Base frequency is 2.5 GHz, with boost up to 5.4 GHz. L3 cache: 64 MB (total). L2 cache: 1 MB (per core). Built on CCD = 5 nm, I/O = 6 nm process technology. Socket: FL1. Thermal design power (TDP): 55 Watt. Memory support: DDR5. Passmark benchmark score: 54,425 points. Launch price was $700.
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
Both the Ryzen 9 7945HX and EPYC 4545P share an identical 16-core/32-thread configuration. Boost clocks reach 5.4 GHz on the Ryzen 9 7945HX versus 5.4 GHz on the EPYC 4545P — identical boost frequencies (base: 2.5 GHz vs 3 GHz). The Ryzen 9 7945HX uses the Dragon Range-HX (Zen 4) (2023−2024) architecture (CCD = 5 nm, I/O = 6 nm), while the EPYC 4545P uses Grado (2025) (4 nm). In PassMark, the Ryzen 9 7945HX scores 54,425 against the EPYC 4545P's 54,255 — a 0.3% lead for the Ryzen 9 7945HX. Both processors carry 64 MB (total) of L3 cache.
| Feature | Ryzen 9 7945HX | EPYC 4545P |
|---|---|---|
| Cores / Threads | 16 / 32 | 16 / 32 |
| Boost Clock | 5.4 GHz | 5.4 GHz |
| Base Clock | 2.5 GHz | 3 GHz+20% |
| L3 Cache | 64 MB (total) | 64 MB (total) |
| L2 Cache | 1 MB (per core) | 1 MB (per core) |
| Process | CCD = 5 nm, I/O = 6 nm | 4 nm-20% |
| Architecture | Dragon Range-HX (Zen 4) (2023−2024) | Grado (2025) |
| PassMark | 54,425 | 54,255 |
| Cinebench R23 Multi | 34,521 | — |
| Geekbench 6 Single | 2,774 | — |
| Geekbench 6 Multi | 16,214 | — |
Memory & Platform
The Ryzen 9 7945HX uses the FL1 socket (PCIe 5.0), while the EPYC 4545P uses AM5 (PCIe 4.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR5-5200 on the Ryzen 9 7945HX 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 EPYC 4545P supports up to 192 of RAM compared to 64 GB — 100% more capacity for professional workloads. Both feature 2-channel memory with ECC support. Both provide 28 PCIe lanes. Chipset compatibility: FL1 (Ryzen 9 7945HX) and AM5 (EPYC 4545P).
| Feature | Ryzen 9 7945HX | EPYC 4545P |
|---|---|---|
| Socket | FL1 | AM5 |
| PCIe Generation | PCIe 5.0+25% | PCIe 4.0 |
| Max RAM Speed | DDR5-5200 | 5600+111900% |
| Max RAM Capacity | 64 GB+34952433% | 192 |
| RAM Channels | 2 | 2 |
| ECC Support | ✅ | ✅ |
| PCIe Lanes | 28 | 28 |
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 7945HX) vs VT-x, VT-d, AMD-V (EPYC 4545P). Both include integrated graphics — Radeon 610M (Ryzen 9 7945HX) and AMD Radeon Graphics (EPYC 4545P) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Primary use case: Ryzen 9 7945HX targets Extreme Gaming / Mobile Workstation. Direct competitor: Ryzen 9 7945HX rivals Core i9-14900HX; EPYC 4545P rivals Ryzen 9 7900X.
| Feature | Ryzen 9 7945HX | 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 |
| Target Use | Extreme Gaming / Mobile Workstation | — |
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