CPU
GPU
Ryzen 9 7900
Xeon w5-2555X
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 7900
Performance Per Dollar Xeon w5-2555X
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Ryzen 9 7900 | Xeon w5-2555X |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ✅ More affordable ($370) | ⚠️ Higher cost ($1,145) |
| Longevity | ✨ Modern (Raphael (Zen4) (2022−2023) / 5 nm) | ✨ Modern (Legacy / Intel 7 nm) |
💎 Value Proposition
| Insight | Ryzen 9 7900 | Xeon w5-2555X |
|---|---|---|
| Cost Efficiency | ✅ Better overall value (+213%) | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($370) | ⚠️ Higher cost ($1,145) |
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 7900 and Xeon w5-2555X
Ryzen 9 7900
The Ryzen 9 7900 is manufactured by AMD. It was released in 14 January 2023 (2 years ago). It is based on the Raphael (Zen4) (2022−2023) architecture. It features 12 cores and 24 threads. Base frequency is 3.7 GHz, with boost up to 5.4 GHz. L3 cache: 64 MB (total). L2 cache: 1 MB (per core). Built on 5 nm process technology. Socket: AM5. Thermal design power (TDP): 65 Watt. Memory support: DDR5-5200. Passmark benchmark score: 48,168 points. Launch price was $429.
Xeon w5-2555X
The Xeon w5-2555X is manufactured by Intel. It was released in 2015-01-01. It features 14 cores and 28 threads. Base frequency is 3.3 GHz, with boost up to 4.8 GHz. L3 cache: 33.75 MB Intel® Smart Cache. Built on Intel 7 nm process technology. Socket: LGA4677. Thermal design power (TDP): 252 Watt. Memory support: DDR5-4800. Passmark benchmark score: 47,638 points. Launch price was $800.
Processing Power
The Ryzen 9 7900 packs 12 cores / 24 threads, while the Xeon w5-2555X offers 14 cores / 28 threads — the Xeon w5-2555X has 2 more cores. Boost clocks reach 5.4 GHz on the Ryzen 9 7900 versus 4.8 GHz on the Xeon w5-2555X — a 11.8% clock advantage for the Ryzen 9 7900 (base: 3.7 GHz vs 3.3 GHz). The Ryzen 9 7900 is built on the Raphael (Zen4) (2022−2023) architecture. In PassMark, the Ryzen 9 7900 scores 48,168 against the Xeon w5-2555X's 47,638 — a 1.1% lead for the Ryzen 9 7900. L3 cache: 64 MB (total) on the Ryzen 9 7900 vs 33.75 MB Intel® Smart Cache on the Xeon w5-2555X.
| Feature | Ryzen 9 7900 | Xeon w5-2555X |
|---|---|---|
| Cores / Threads | 12 / 24 | 14 / 28+17% |
| Boost Clock | 5.4 GHz+13% | 4.8 GHz |
| Base Clock | 3.7 GHz+12% | 3.3 GHz |
| L3 Cache | 64 MB (total)+90% | 33.75 MB Intel® Smart Cache |
| L2 Cache | 1 MB (per core) | — |
| Process | 5 nm-29% | Intel 7 nm |
| Architecture | Raphael (Zen4) (2022−2023) | — |
| PassMark | 48,168+1% | 47,638 |
| Cinebench R23 Multi | 24,600 | — |
| Geekbench 6 Single | 2,800 | — |
| Geekbench 6 Multi | 18,000 | — |
Memory & Platform
The Ryzen 9 7900 uses the AM5 socket (PCIe 5.0), while the Xeon w5-2555X uses LGA4677 (PCIe 5.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR5-5200 on the Ryzen 9 7900 versus 4800 on the Xeon w5-2555X — the Xeon w5-2555X supports 199.6% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Xeon w5-2555X supports up to 4096 of RAM compared to 128 GB — 187.9% more capacity for professional workloads. Memory channels: 2 (Ryzen 9 7900) vs 8 (Xeon w5-2555X). PCIe lanes: 28 (Ryzen 9 7900) vs 112 (Xeon w5-2555X) — the Xeon w5-2555X offers 84 more lanes for additional GPUs or NVMe drives. Chipset compatibility: AMD X670E,AMD X670,AMD B650E,AMD B650,AMD A620 (Ryzen 9 7900) and W790 (Xeon w5-2555X).
| Feature | Ryzen 9 7900 | Xeon w5-2555X |
|---|---|---|
| Socket | AM5 | LGA4677 |
| PCIe Generation | PCIe 5.0 | PCIe 5.0 |
| Max RAM Speed | DDR5-5200 | 4800+95900% |
| Max RAM Capacity | 128 GB+3276700% | 4096 |
| RAM Channels | 2 | 8+300% |
| ECC Support | ✅ | ✅ |
| PCIe Lanes | 28 | 112+300% |
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: true (Ryzen 9 7900) vs VT-x, VT-d (Xeon w5-2555X). The Ryzen 9 7900 includes integrated graphics (Radeon Graphics (Raphael)), while the Xeon w5-2555X requires a dedicated GPU. Direct competitor: Ryzen 9 7900 rivals Core i9-13900; Xeon w5-2555X rivals Threadripper PRO 7965WX.
| Feature | Ryzen 9 7900 | Xeon w5-2555X |
|---|---|---|
| Integrated GPU | Yes | No |
| IGPU Model | Radeon Graphics (Raphael) | None |
| Unlocked | Yes | Yes |
| AVX-512 | Yes | Yes |
| Virtualization | true | VT-x, VT-d |
Value Analysis
The Ryzen 9 7900 launched at $429 MSRP, while the Xeon w5-2555X debuted at $1069. At current prices ($370 vs $1145), the Ryzen 9 7900 is $775 cheaper. In terms of value (PassMark points per dollar), the Ryzen 9 7900 delivers 130.2 pts/$ vs 41.6 pts/$ for the Xeon w5-2555X — making the Ryzen 9 7900 the 103.1% better value option.
| Feature | Ryzen 9 7900 | Xeon w5-2555X |
|---|---|---|
| MSRP | $429-60% | $1069 |
| Avg Price (30d) | $370-68% | $1145 |
| Performance per Dollar | 130.2+213% | 41.6 |
| Release Date | 2023 | 2024 |
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