Ryzen 9 5900X
Xeon w5-2555X
Ryzen 9 5900X vs Xeon w5-2555X Performance Spectrum
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.
Ryzen 9 5900X vs Xeon w5-2555X FPS Benchmarks
Predicted gaming performance across popular games. Tested paired with GeForce RTX 5090 to isolate CPU performance.
Search any supported game below to compare 1080p FPS for both components.
Path of Exile 2
Counter-Strike 2
League of Legends
Valorant
Among Us
Apex Legends
ARC Raiders
Baldur's Gate 3
Call of Duty: Black Ops 6
Ryzen 9 5900X vs Xeon w5-2555X: Pros, Cons & Final Verdict
See where each CPU makes more sense in practice: gaming, heavier work, platform cost, power draw, and upgrade path.
Ryzen 9 5900X
2020Why buy it
- ✅Better for gaming: +5.8% higher average FPS across 50 shared CPU benchmark tests.
- ✅+89.6% larger total L3 cache (64 MB vs 34 MB).
- ✅Costs $520 less on MSRP ($549 MSRP vs $1,069 MSRP).
- ✅Delivers 59.2% more PassMark for each dollar spent, at 71.0 vs 44.6 PassMark/$ ($549 MSRP vs $1,069 MSRP).
- ✅Draws 105W instead of 252W, a 147W reduction.
Trade-offs
- ❌Lower PassMark (38,955 vs 47,638).
- ❌Less compelling for workstation-style loads than Xeon w5-2555X, which brings 14 cores / 28 threads and 112 PCIe lanes.
- ❌Older platform position on AM4 with DDR4, while Xeon w5-2555X moves to LGA4677 and DDR5.
Xeon w5-2555X
2024Why buy it
- ✅+22.3% higher PassMark.
- ✅Better for workstations and heavier parallel workloads: 14 cores / 28 threads, plus 112 PCIe lanes vs 24.
- ✅Newer platform on LGA4677 with DDR5 support instead of AM4 and DDR4.
- ✅366.7% more PCIe lanes (112 vs 24) for storage and expansion-heavy builds.
Trade-offs
- ❌Worse for gaming: lower average FPS than Ryzen 9 5900X across 50 shared CPU benchmark tests.
- ❌Smaller total L3 cache (34 MB vs 64 MB).
- ❌Lower PassMark per dollar, at 44.6 vs 71.0 PassMark/$ ($1,069 MSRP vs $549 MSRP).
- ❌140% higher power demand at 252W vs 105W.
Quick Answers
So, is Ryzen 9 5900X better than Xeon w5-2555X?
Which one is better for streaming, content creation, and heavy multitasking?
Which one is the smarter buy today, not just the cheaper CPU?
Which one is more future-proof for 2026 and beyond?
Ryzen 9 5900X vs Xeon w5-2555X Technical Specifications
Side-by-side specs, architecture details, clocks, memory, power, and platform differences.
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.
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 5900X 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 4.8 GHz on the Ryzen 9 5900X versus 4.8 GHz on the Xeon w5-2555X — identical boost frequencies (base: 3.7 GHz vs 3.3 GHz). The Ryzen 9 5900X is built on the Vermeer (Zen3) (2020−2022) architecture. In PassMark, the Ryzen 9 5900X scores 38,955 against the Xeon w5-2555X's 47,638 — a 20.1% lead for the Xeon w5-2555X. L3 cache: 64 MB on the Ryzen 9 5900X vs 33.75 MB Intel® Smart Cache on the Xeon w5-2555X.
| Feature | Ryzen 9 5900X | Xeon w5-2555X |
|---|---|---|
| Cores / Threads | 12 / 24 | 14 / 28+17% |
| Boost Clock | 4.8 GHz | 4.8 GHz |
| Base Clock | 3.7 GHz+12% | 3.3 GHz |
| L3 Cache | 64 MB+90% | 33.75 MB Intel® Smart Cache |
| L2 Cache | 512K (per core) | — |
| Process | 7 nm, 12 nm | Intel 7 nm |
| Architecture | Vermeer (Zen3) (2020−2022) | — |
| PassMark | 38,955 | 47,638+22% |
| Cinebench R23 Multi | 21,000 | — |
| Geekbench 6 Single | 2,174 | — |
| Geekbench 6 Multi | 11,888 | — |
Memory & Platform
The Ryzen 9 5900X uses the AM4 socket (PCIe 4.0), while the Xeon w5-2555X uses LGA4677 (PCIe 5.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR4-3200 on the Ryzen 9 5900X versus 4800 on the Xeon w5-2555X — the Xeon w5-2555X supports 50% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Xeon w5-2555X supports up to 4096 GB of RAM compared to 128 GB — 3100% more capacity for professional workloads. Memory channels: 2 (Ryzen 9 5900X) vs 8 (Xeon w5-2555X). PCIe lanes: 24 (Ryzen 9 5900X) vs 112 (Xeon w5-2555X) — the Xeon w5-2555X offers 88 more lanes for additional GPUs or NVMe drives. Chipset compatibility: A320,B350,X370,B450,X470,B550,X570 (Ryzen 9 5900X) and W790 (Xeon w5-2555X).
| Feature | Ryzen 9 5900X | Xeon w5-2555X |
|---|---|---|
| Socket | AM4 | LGA4677 |
| PCIe Generation | PCIe 4.0 | PCIe 5.0+25% |
| Max RAM Speed | DDR4-3200 | 4800+50% |
| Max RAM Capacity | 128 GB | 4096 GB+3100% |
| RAM Channels | 2 | 8+300% |
| ECC Support | Yes | Yes |
| PCIe Lanes | 24 | 112+367% |
Advanced Features
Both processors feature an unlocked multiplier for overclocking. Only the Xeon w5-2555X supports AVX-512 instructions — important for machine learning and scientific applications. Virtualization support: AMD-V (Ryzen 9 5900X) vs VT-x, VT-d (Xeon w5-2555X). Primary use case: Ryzen 9 5900X targets Workstation. Direct competitor: Ryzen 9 5900X rivals Core i9-12900K; Xeon w5-2555X rivals Threadripper PRO 7965WX.
| Feature | Ryzen 9 5900X | Xeon w5-2555X |
|---|---|---|
| Integrated GPU | No | No |
| IGPU Model | — | None |
| Unlocked | Yes | Yes |
| AVX-512 | No | Yes |
| Virtualization | AMD-V | VT-x, VT-d |
| Target Use | Workstation | — |
Value Analysis
At launch, the Ryzen 9 5900X was priced at $549, while the Xeon w5-2555X came in at $1069. On launch pricing ($549 vs $1069), Ryzen 9 5900X was $520 cheaper. In terms of value on MSRP (PassMark points per dollar), the Ryzen 9 5900X delivers 71.0 pts/$ vs 44.6 pts/$ for the Xeon w5-2555X — making the Ryzen 9 5900X the 45.7% better value option.
| Feature | Ryzen 9 5900X | Xeon w5-2555X |
|---|---|---|
| MSRP | $549-49% | $1069 |
| Performance per Dollar | 71.0+59% | 44.6 |
| Release Date | 2020 | 2024 |
Affiliate Disclosure
ChipVERSUS is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. We may earn a commission on qualifying purchases made through our links. This comes at no additional cost to you and helps support our work in providing comprehensive PC building guides and tools.
Amazon and the Amazon logo are trademarks of Amazon.com, Inc. or its affiliates.
Top Performing CPUs
The most powerful cpus ranked by PassMark CPU Mark benchmark scores.
You May Also Compare
Similar CPU comparisons based on Ryzen 9 5900X and Xeon w5-2555X
