CPU
GPU
Ryzen 9 9955HX3D
Xeon Platinum 8454H
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 9955HX3D
Performance Per Dollar Xeon Platinum 8454H
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Ryzen 9 9955HX3D | Xeon Platinum 8454H |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ✅ More affordable ($749) | ⚠️ Higher cost ($6,540) |
| Longevity | ✨ Modern (Fire Range-HX (Zen 5) (2025) / 4 nm) | ✨ Modern (Sapphire Rapids (2023−2024) / Intel 7 nm) |
💎 Value Proposition
| Insight | Ryzen 9 9955HX3D | Xeon Platinum 8454H |
|---|---|---|
| Cost Efficiency | ✅ Better overall value (+762%) | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($749) | ⚠️ Higher cost ($6,540) |
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 9955HX3D and Xeon Platinum 8454H
Ryzen 9 9955HX3D
The Ryzen 9 9955HX3D is manufactured by AMD. It was released in 2025-01-01. It is based on the Fire Range-HX (Zen 5) (2025) architecture. It features 16 cores and 32 threads. Base frequency is 2.5 GHz, with boost up to 5.4 GHz. L3 cache: 128 MB (total). L2 cache: 1 MB (per core). Built on 4 nm process technology. Socket: FL1. Thermal design power (TDP): 55 Watt. Memory support: DDR5. Passmark benchmark score: 61,578 points. Launch price was $700.
Xeon Platinum 8454H
The Xeon Platinum 8454H is manufactured by Intel. It was released in 10 January 2023 (2 years ago). It is based on the Sapphire Rapids (2023−2024) architecture. It features 32 cores and 64 threads. Base frequency is 2.1 GHz, with boost up to 3.4 GHz. L3 cache: 82.5 MB. L2 cache: 2 MB (per core). Built on Intel 7 nm process technology. Socket: LGA4677. Thermal design power (TDP): 270 Watt. Memory support: DDR5-4800, DDR5-4400. Passmark benchmark score: 62,347 points. Launch price was $6,540.
Processing Power
The Ryzen 9 9955HX3D packs 16 cores / 32 threads, while the Xeon Platinum 8454H offers 32 cores / 64 threads — the Xeon Platinum 8454H has 16 more cores. Boost clocks reach 5.4 GHz on the Ryzen 9 9955HX3D versus 3.4 GHz on the Xeon Platinum 8454H — a 45.5% clock advantage for the Ryzen 9 9955HX3D (base: 2.5 GHz vs 2.1 GHz). The Ryzen 9 9955HX3D uses the Fire Range-HX (Zen 5) (2025) architecture (4 nm), while the Xeon Platinum 8454H uses Sapphire Rapids (2023−2024) (Intel 7 nm). In PassMark, the Ryzen 9 9955HX3D scores 61,578 against the Xeon Platinum 8454H's 62,347 — a 1.2% lead for the Xeon Platinum 8454H. L3 cache: 128 MB (total) on the Ryzen 9 9955HX3D vs 82.5 MB on the Xeon Platinum 8454H.
| Feature | Ryzen 9 9955HX3D | Xeon Platinum 8454H |
|---|---|---|
| Cores / Threads | 16 / 32 | 32 / 64+100% |
| Boost Clock | 5.4 GHz+59% | 3.4 GHz |
| Base Clock | 2.5 GHz+19% | 2.1 GHz |
| L3 Cache | 128 MB (total)+55% | 82.5 MB |
| L2 Cache | 1 MB (per core) | 2 MB (per core)+100% |
| Process | 4 nm-43% | Intel 7 nm |
| Architecture | Fire Range-HX (Zen 5) (2025) | Sapphire Rapids (2023−2024) |
| PassMark | 61,578 | 62,347+1% |
Memory & Platform
The Ryzen 9 9955HX3D uses the FL1 socket (PCIe 5.0), while the Xeon Platinum 8454H uses LGA4677 (PCIe 5.0) — making them incompatible on the same motherboard. Maximum memory speed reaches 5600 on the Ryzen 9 9955HX3D versus 4800 on the Xeon Platinum 8454H — the Ryzen 9 9955HX3D supports 15.4% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Xeon Platinum 8454H supports up to 4096 of RAM compared to 96 — 190.8% more capacity for professional workloads. Memory channels: 2 (Ryzen 9 9955HX3D) vs 8 (Xeon Platinum 8454H). PCIe lanes: 28 (Ryzen 9 9955HX3D) vs 80 (Xeon Platinum 8454H) — the Xeon Platinum 8454H offers 52 more lanes for additional GPUs or NVMe drives. Chipset compatibility: FL1 (Ryzen 9 9955HX3D) and C741 (Xeon Platinum 8454H).
| Feature | Ryzen 9 9955HX3D | Xeon Platinum 8454H |
|---|---|---|
| Socket | FL1 | LGA4677 |
| PCIe Generation | PCIe 5.0 | PCIe 5.0 |
| Max RAM Speed | 5600+17% | 4800 |
| Max RAM Capacity | 96 | 4096+4167% |
| RAM Channels | 2 | 8+300% |
| ECC Support | ✅ | ✅ |
| PCIe Lanes | 28 | 80+186% |
Advanced Features
Only the Ryzen 9 9955HX3D has an unlocked multiplier for overclocking — a significant advantage for enthusiasts seeking extra performance. Both support AVX-512 instructions, benefiting scientific computing, AI inference, and encryption workloads. Virtualization support: VT-x, VT-d, AMD-V (Ryzen 9 9955HX3D) vs VT-x, VT-d (Xeon Platinum 8454H). The Ryzen 9 9955HX3D includes integrated graphics (AMD Radeon 610M), while the Xeon Platinum 8454H requires a dedicated GPU. Direct competitor: Ryzen 9 9955HX3D rivals Core Ultra 9 185H; Xeon Platinum 8454H rivals EPYC 9354.
| Feature | Ryzen 9 9955HX3D | Xeon Platinum 8454H |
|---|---|---|
| Integrated GPU | Yes | No |
| IGPU Model | AMD Radeon 610M | None |
| Unlocked | Yes | No |
| AVX-512 | Yes | Yes |
| Virtualization | VT-x, VT-d, AMD-V | VT-x, VT-d |
Value Analysis
The Ryzen 9 9955HX3D launched at $749 MSRP, while the Xeon Platinum 8454H debuted at $6540.
| Feature | Ryzen 9 9955HX3D | Xeon Platinum 8454H |
|---|---|---|
| MSRP | $749-89% | $6540 |
| Release Date | 2025 | 2023 |
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