Xeon Gold 6423N vs Ryzen 9 5900X
Xeon Gold 6423N
Ryzen 9 5900X
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 Xeon Gold 6423N
Performance Per Dollar Ryzen 9 5900X
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Xeon Gold 6423N | Ryzen 9 5900X |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ⚠️ Higher cost ($2,161) | ✅ More affordable ($350) |
| Longevity | ✨ Modern (Legacy / Intel 7 nm) | ✨ Modern (Vermeer (Zen3) (2020−2022) / 7 nm, 12 nm) |
💎 Value Proposition
| Insight | Xeon Gold 6423N | Ryzen 9 5900X |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ✅ Better overall value (+319%) |
| Upfront Cost | ⚠️ Higher cost ($2,161) | ✅ More affordable ($350) |
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 Xeon Gold 6423N and Ryzen 9 5900X
Xeon Gold 6423N
The Xeon Gold 6423N is manufactured by Intel. It was released in 2023-07-01. It features 28 cores and 56 threads. Base frequency is 2 GHz, with boost up to 3.6 GHz. L3 cache: 52.5 MB. Built on Intel 7 nm process technology. Socket: LGA4677. Thermal design power (TDP): 195 Watt. Memory support: DDR5-4400. Passmark benchmark score: 57,434 points. Launch price was $2,161.
Ryzen 9 5900X
The Ryzen 9 5900X is manufactured by AMD. It was released in 5 November 2020 (5 years ago). It is based on the Vermeer (Zen3) (2020−2022) architecture. It features 12 cores and 24 threads. Base frequency is 3.7 GHz, with boost up to 4.8 GHz. L3 cache: 64 MB. L2 cache: 512K (per core). Built on 7 nm, 12 nm process technology. Socket: AM4. Thermal design power (TDP): 105 Watt. Memory support: DDR4-3200. Passmark benchmark score: 38,955 points. Launch price was $549.
Processing Power
The Xeon Gold 6423N packs 28 cores / 56 threads, while the Ryzen 9 5900X offers 12 cores / 24 threads — the Xeon Gold 6423N has 16 more cores. Boost clocks reach 3.6 GHz on the Xeon Gold 6423N versus 4.8 GHz on the Ryzen 9 5900X — a 28.6% clock advantage for the Ryzen 9 5900X (base: 2 GHz vs 3.7 GHz). The Ryzen 9 5900X is built on the Vermeer (Zen3) (2020−2022) architecture. In PassMark, the Xeon Gold 6423N scores 57,434 against the Ryzen 9 5900X's 38,955 — a 38.3% lead for the Xeon Gold 6423N. L3 cache: 52.5 MB on the Xeon Gold 6423N vs 64 MB on the Ryzen 9 5900X.
| Feature | Xeon Gold 6423N | Ryzen 9 5900X |
|---|---|---|
| Cores / Threads | 28 / 56+133% | 12 / 24 |
| Boost Clock | 3.6 GHz | 4.8 GHz+33% |
| Base Clock | 2 GHz | 3.7 GHz+85% |
| L3 Cache | 52.5 MB | 64 MB+22% |
| L2 Cache | — | 512K (per core) |
| Process | Intel 7 nm | 7 nm, 12 nm |
| Architecture | — | Vermeer (Zen3) (2020−2022) |
| PassMark | 57,434+47% | 38,955 |
| Cinebench R23 Multi | — | 21,000 |
| Geekbench 6 Single | — | 2,174 |
| Geekbench 6 Multi | — | 11,888 |
Memory & Platform
The Xeon Gold 6423N uses the LGA4677 socket (PCIe 5.0), while the Ryzen 9 5900X uses AM4 (PCIe 4.0) — making them incompatible on the same motherboard. Maximum memory speed reaches 4800 on the Xeon Gold 6423N versus DDR4-3200 on the Ryzen 9 5900X — the Xeon Gold 6423N supports 199.7% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Xeon Gold 6423N supports up to 4096 of RAM compared to 128 GB — 187.9% more capacity for professional workloads. Memory channels: 8 (Xeon Gold 6423N) vs 2 (Ryzen 9 5900X). PCIe lanes: 80 (Xeon Gold 6423N) vs 24 (Ryzen 9 5900X) — the Xeon Gold 6423N offers 56 more lanes for additional GPUs or NVMe drives. Chipset compatibility: C741 (Xeon Gold 6423N) and A320,B350,X370,B450,X470,B550,X570 (Ryzen 9 5900X).
| Feature | Xeon Gold 6423N | Ryzen 9 5900X |
|---|---|---|
| Socket | LGA4677 | AM4 |
| PCIe Generation | PCIe 5.0+25% | PCIe 4.0 |
| Max RAM Speed | 4800+119900% | DDR4-3200 |
| Max RAM Capacity | 4096 | 128 GB+3276700% |
| RAM Channels | 8+300% | 2 |
| ECC Support | ✅ | ✅ |
| PCIe Lanes | 80+233% | 24 |
Advanced Features
Only the Ryzen 9 5900X has an unlocked multiplier for overclocking — a significant advantage for enthusiasts seeking extra performance. Only the Xeon Gold 6423N supports AVX-512 instructions — important for machine learning and scientific applications. Virtualization support: VT-x, VT-d (Xeon Gold 6423N) vs AMD-V (Ryzen 9 5900X). Primary use case: Ryzen 9 5900X targets Workstation. Direct competitor: Xeon Gold 6423N rivals EPYC 9354; Ryzen 9 5900X rivals Core i9-12900K.
| Feature | Xeon Gold 6423N | Ryzen 9 5900X |
|---|---|---|
| Integrated GPU | No | No |
| IGPU Model | None | — |
| Unlocked | No | Yes |
| AVX-512 | Yes | No |
| Virtualization | VT-x, VT-d | AMD-V |
| Target Use | — | Workstation |
Value Analysis
The Xeon Gold 6423N launched at $2161 MSRP, while the Ryzen 9 5900X debuted at $549. At current prices ($2161 vs $350), the Ryzen 9 5900X is $1811 cheaper. In terms of value (PassMark points per dollar), the Xeon Gold 6423N delivers 26.6 pts/$ vs 111.3 pts/$ for the Ryzen 9 5900X — making the Ryzen 9 5900X the 122.9% better value option.
| Feature | Xeon Gold 6423N | Ryzen 9 5900X |
|---|---|---|
| MSRP | $2161 | $549-75% |
| Avg Price (30d) | $2161 | $350-84% |
| Performance per Dollar | 26.6 | 111.3+318% |
| Release Date | 2023 | 2020 |
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