Ryzen 9 9900X vs Xeon Platinum 8358
Ryzen 9 9900X
Xeon Platinum 8358
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 9900X
Performance Per Dollar Xeon Platinum 8358
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Ryzen 9 9900X | Xeon Platinum 8358 |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ✅ More affordable ($370) | ⚠️ Higher cost ($3,145) |
| Longevity | ✨ Modern (Granite Ridge (2024−2025) / 4 nm) | ✨ Modern (Ice Lake-SP (2021) / 10 nm) |
💎 Value Proposition
| Insight | Ryzen 9 9900X | Xeon Platinum 8358 |
|---|---|---|
| Cost Efficiency | ✅ Better overall value (+752%) | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($370) | ⚠️ Higher cost ($3,145) |
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 9900X and Xeon Platinum 8358
Ryzen 9 9900X
The Ryzen 9 9900X is manufactured by AMD. It was released in 15 August 2024 (1 year ago). It is based on the Granite Ridge (2024−2025) architecture. It features 12 cores and 24 threads. Base frequency is 4.4 GHz, with boost up to 5.6 GHz. L3 cache: 64 MB (total). L2 cache: 1 MB (per core). Built on 4 nm process technology. Socket: AM5. Thermal design power (TDP): 120 Watt. Memory support: DDR5. Passmark benchmark score: 54,530 points. Launch price was $499.
Xeon Platinum 8358
The Xeon Platinum 8358 is manufactured by Intel. It was released in 2021-04-06. It is based on the Ice Lake-SP (2021) architecture. It features 32 cores and 64 threads. Base frequency is 2.6 GHz, with boost up to 3.4 GHz. L3 cache: 48 MB (total). L2 cache: 1 MB (per core). Built on 10 nm process technology. Socket: LGA4189. Thermal design power (TDP): 250 Watt. Memory support: DDR4-3200. Passmark benchmark score: 54,416 points. Launch price was $3,950.
Processing Power
The Ryzen 9 9900X packs 12 cores / 24 threads, while the Xeon Platinum 8358 offers 32 cores / 64 threads — the Xeon Platinum 8358 has 20 more cores. Boost clocks reach 5.6 GHz on the Ryzen 9 9900X versus 3.4 GHz on the Xeon Platinum 8358 — a 48.9% clock advantage for the Ryzen 9 9900X (base: 4.4 GHz vs 2.6 GHz). The Ryzen 9 9900X uses the Granite Ridge (2024−2025) architecture (4 nm), while the Xeon Platinum 8358 uses Ice Lake-SP (2021) (10 nm). In PassMark, the Ryzen 9 9900X scores 54,530 against the Xeon Platinum 8358's 54,416 — a 0.2% lead for the Ryzen 9 9900X. L3 cache: 64 MB (total) on the Ryzen 9 9900X vs 48 MB (total) on the Xeon Platinum 8358.
| Feature | Ryzen 9 9900X | Xeon Platinum 8358 |
|---|---|---|
| Cores / Threads | 12 / 24 | 32 / 64+167% |
| Boost Clock | 5.6 GHz+65% | 3.4 GHz |
| Base Clock | 4.4 GHz+69% | 2.6 GHz |
| L3 Cache | 64 MB (total)+33% | 48 MB (total) |
| L2 Cache | 1 MB (per core) | 1 MB (per core) |
| Process | 4 nm-60% | 10 nm |
| Architecture | Granite Ridge (2024−2025) | Ice Lake-SP (2021) |
| PassMark | 54,530 | 54,416 |
| Cinebench R23 Multi | 33,003 | — |
| Geekbench 6 Single | 3,401 | — |
| Geekbench 6 Multi | 19,756 | — |
Memory & Platform
The Ryzen 9 9900X uses the AM5 socket (PCIe 5.0), while the Xeon Platinum 8358 uses LGA4189 (PCIe 4.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR5-5600 on the Ryzen 9 9900X versus 3200 on the Xeon Platinum 8358 — the Xeon Platinum 8358 supports 199.4% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Xeon Platinum 8358 supports up to 4096 of RAM compared to 256 GB — 176.5% more capacity for professional workloads. Memory channels: 2 (Ryzen 9 9900X) vs 8 (Xeon Platinum 8358). PCIe lanes: 24 (Ryzen 9 9900X) vs 64 (Xeon Platinum 8358) — the Xeon Platinum 8358 offers 40 more lanes for additional GPUs or NVMe drives. Chipset compatibility: A620,B650,X670,X870 (Ryzen 9 9900X) and C621A (Xeon Platinum 8358).
| Feature | Ryzen 9 9900X | Xeon Platinum 8358 |
|---|---|---|
| Socket | AM5 | LGA4189 |
| PCIe Generation | PCIe 5.0+25% | PCIe 4.0 |
| Max RAM Speed | DDR5-5600 | 3200+63900% |
| Max RAM Capacity | 256 GB+6553500% | 4096 |
| RAM Channels | 2 | 8+300% |
| ECC Support | ✅ | ✅ |
| PCIe Lanes | 24 | 64+167% |
Advanced Features
Only the Ryzen 9 9900X 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: AMD-V (Ryzen 9 9900X) vs VT-x, VT-d (Xeon Platinum 8358). The Ryzen 9 9900X includes integrated graphics (Radeon 610M), while the Xeon Platinum 8358 requires a dedicated GPU. Direct competitor: Xeon Platinum 8358 rivals EPYC 7543.
| Feature | Ryzen 9 9900X | Xeon Platinum 8358 |
|---|---|---|
| Integrated GPU | Yes | No |
| IGPU Model | Radeon 610M | None |
| Unlocked | Yes | No |
| AVX-512 | Yes | Yes |
| Virtualization | AMD-V | VT-x, VT-d |
Value Analysis
The Ryzen 9 9900X launched at $499 MSRP, while the Xeon Platinum 8358 debuted at $4607. At current prices ($370 vs $3145), the Ryzen 9 9900X is $2775 cheaper. In terms of value (PassMark points per dollar), the Ryzen 9 9900X delivers 147.4 pts/$ vs 17.3 pts/$ for the Xeon Platinum 8358 — making the Ryzen 9 9900X the 158% better value option.
| Feature | Ryzen 9 9900X | Xeon Platinum 8358 |
|---|---|---|
| MSRP | $499-89% | $4607 |
| Avg Price (30d) | $370-88% | $3145 |
| Performance per Dollar | 147.4+752% | 17.3 |
| Release Date | 2024 | 2021 |
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