Ryzen 9 9955HX3D vs Xeon Gold 6448Y
Ryzen 9 9955HX3D
Xeon Gold 6448Y
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 Gold 6448Y
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Ryzen 9 9955HX3D | Xeon Gold 6448Y |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ✅ More affordable ($749) | ⚠️ Higher cost ($3,583) |
| 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 Gold 6448Y |
|---|---|---|
| Cost Efficiency | ✅ Better overall value (+387%) | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($749) | ⚠️ Higher cost ($3,583) |
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 Gold 6448Y
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 Gold 6448Y
The Xeon Gold 6448Y 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 4.1 GHz. L3 cache: 60 MB. L2 cache: 2 MB (per core). Built on Intel 7 nm process technology. Socket: LGA4677. Thermal design power (TDP): 225 Watt. Memory support: DDR5-4800, DDR5-4400. Passmark benchmark score: 60,449 points. Launch price was $3,583.
Processing Power
The Ryzen 9 9955HX3D packs 16 cores / 32 threads, while the Xeon Gold 6448Y offers 32 cores / 64 threads — the Xeon Gold 6448Y has 16 more cores. Boost clocks reach 5.4 GHz on the Ryzen 9 9955HX3D versus 4.1 GHz on the Xeon Gold 6448Y — a 27.4% 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 Gold 6448Y uses Sapphire Rapids (2023−2024) (Intel 7 nm). In PassMark, the Ryzen 9 9955HX3D scores 61,578 against the Xeon Gold 6448Y's 60,449 — a 1.9% lead for the Ryzen 9 9955HX3D. L3 cache: 128 MB (total) on the Ryzen 9 9955HX3D vs 60 MB on the Xeon Gold 6448Y.
| Feature | Ryzen 9 9955HX3D | Xeon Gold 6448Y |
|---|---|---|
| Cores / Threads | 16 / 32 | 32 / 64+100% |
| Boost Clock | 5.4 GHz+32% | 4.1 GHz |
| Base Clock | 2.5 GHz+19% | 2.1 GHz |
| L3 Cache | 128 MB (total)+113% | 60 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+2% | 60,449 |
Memory & Platform
The Ryzen 9 9955HX3D uses the FL1 socket (PCIe 5.0), while the Xeon Gold 6448Y 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 Gold 6448Y — the Ryzen 9 9955HX3D supports 15.4% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Xeon Gold 6448Y 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 Gold 6448Y). PCIe lanes: 28 (Ryzen 9 9955HX3D) vs 80 (Xeon Gold 6448Y) — the Xeon Gold 6448Y offers 52 more lanes for additional GPUs or NVMe drives. Chipset compatibility: FL1 (Ryzen 9 9955HX3D) and C741 (Xeon Gold 6448Y).
| Feature | Ryzen 9 9955HX3D | Xeon Gold 6448Y |
|---|---|---|
| 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 Gold 6448Y). The Ryzen 9 9955HX3D includes integrated graphics (AMD Radeon 610M), while the Xeon Gold 6448Y requires a dedicated GPU. Direct competitor: Ryzen 9 9955HX3D rivals Core Ultra 9 185H; Xeon Gold 6448Y rivals EPYC 9354.
| Feature | Ryzen 9 9955HX3D | Xeon Gold 6448Y |
|---|---|---|
| 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 Gold 6448Y debuted at $3583.
| Feature | Ryzen 9 9955HX3D | Xeon Gold 6448Y |
|---|---|---|
| MSRP | $749-79% | $3583 |
| Release Date | 2025 | 2023 |
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