CPU
GPU
Ryzen 9 9955HX3D
Xeon Gold 6438Y+
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 6438Y+
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Ryzen 9 9955HX3D | Xeon Gold 6438Y+ |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ⚠️ Higher cost ($749) | ✅ More affordable ($389) |
| Longevity | ✨ Modern (Fire Range-HX (Zen 5) (2025) / 4 nm) | ✨ Modern (Sapphire Rapids (2023−2024) / 10 nm) |
💎 Value Proposition
| Insight | Ryzen 9 9955HX3D | Xeon Gold 6438Y+ |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ✅ Better overall value (+96%) |
| Upfront Cost | ⚠️ Higher cost ($749) | ✅ More affordable ($389) |
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 6438Y+
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 6438Y+
The Xeon Gold 6438Y+ 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 GHz, with boost up to 4 GHz. L3 cache: 60 MB. L2 cache: 2 MB (per core). Built on 10 nm process technology. Socket: LGA4677. Thermal design power (TDP): 205 Watt. Memory support: DDR5-4800. Passmark benchmark score: 62,660 points. Launch price was $3,141.
Processing Power
The Ryzen 9 9955HX3D packs 16 cores / 32 threads, while the Xeon Gold 6438Y+ offers 32 cores / 64 threads — the Xeon Gold 6438Y+ has 16 more cores. Boost clocks reach 5.4 GHz on the Ryzen 9 9955HX3D versus 4 GHz on the Xeon Gold 6438Y+ — a 29.8% clock advantage for the Ryzen 9 9955HX3D (base: 2.5 GHz vs 2 GHz). The Ryzen 9 9955HX3D uses the Fire Range-HX (Zen 5) (2025) architecture (4 nm), while the Xeon Gold 6438Y+ uses Sapphire Rapids (2023−2024) (10 nm). In PassMark, the Ryzen 9 9955HX3D scores 61,578 against the Xeon Gold 6438Y+'s 62,660 — a 1.7% lead for the Xeon Gold 6438Y+. L3 cache: 128 MB (total) on the Ryzen 9 9955HX3D vs 60 MB on the Xeon Gold 6438Y+.
| Feature | Ryzen 9 9955HX3D | Xeon Gold 6438Y+ |
|---|---|---|
| Cores / Threads | 16 / 32 | 32 / 64+100% |
| Boost Clock | 5.4 GHz+35% | 4 GHz |
| Base Clock | 2.5 GHz+25% | 2 GHz |
| L3 Cache | 128 MB (total)+113% | 60 MB |
| L2 Cache | 1 MB (per core) | 2 MB (per core)+100% |
| Process | 4 nm-60% | 10 nm |
| Architecture | Fire Range-HX (Zen 5) (2025) | Sapphire Rapids (2023−2024) |
| PassMark | 61,578 | 62,660+2% |
Memory & Platform
The Ryzen 9 9955HX3D uses the FL1 socket (PCIe 5.0), while the Xeon Gold 6438Y+ 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 6438Y+ — the Ryzen 9 9955HX3D supports 15.4% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Xeon Gold 6438Y+ 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 6438Y+). PCIe lanes: 28 (Ryzen 9 9955HX3D) vs 80 (Xeon Gold 6438Y+) — the Xeon Gold 6438Y+ offers 52 more lanes for additional GPUs or NVMe drives. Chipset compatibility: FL1 (Ryzen 9 9955HX3D) and C741 (Xeon Gold 6438Y+).
| Feature | Ryzen 9 9955HX3D | Xeon Gold 6438Y+ |
|---|---|---|
| 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 6438Y+). The Ryzen 9 9955HX3D includes integrated graphics (AMD Radeon 610M), while the Xeon Gold 6438Y+ requires a dedicated GPU. Direct competitor: Ryzen 9 9955HX3D rivals Core Ultra 9 185H; Xeon Gold 6438Y+ rivals EPYC 9354.
| Feature | Ryzen 9 9955HX3D | Xeon Gold 6438Y+ |
|---|---|---|
| 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 6438Y+ debuted at $2607.
| Feature | Ryzen 9 9955HX3D | Xeon Gold 6438Y+ |
|---|---|---|
| MSRP | $749-71% | $2607 |
| Avg Price (30d) | — | $389 |
| Release Date | 2025 | 2023 |
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