CPU
GPU
Core i9-9900X
Xeon Gold 5218
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 Core i9-9900X
Performance Per Dollar Xeon Gold 5218
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Core i9-9900X | Xeon Gold 5218 |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ✅ More affordable ($300) | ⚠️ Higher cost ($500) |
| Longevity | ✨ Modern (Skylake (server) (2017−2018) / 14 nm) | ✨ Modern (Cascade Lake (2019−2020) / 14 nm) |
💎 Value Proposition
| Insight | Core i9-9900X | Xeon Gold 5218 |
|---|---|---|
| Cost Efficiency | ✅ Better overall value (+67%) | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($300) | ⚠️ Higher cost ($500) |
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 Core i9-9900X and Xeon Gold 5218
Core i9-9900X
The Core i9-9900X is manufactured by Intel. It was released in 19 October 2018 (7 years ago). It is based on the Skylake (server) (2017−2018) architecture. It features 10 cores and 20 threads. Base frequency is 3.5 GHz, with boost up to 4.5 GHz. L3 cache: 19.25 MB (total). L2 cache: 1 MB (per core). Built on 14 nm process technology. Socket: LGA2066. Thermal design power (TDP): 165 Watt. Memory support: DDR4-2666. Passmark benchmark score: 21,655 points. Launch price was $989.
Xeon Gold 5218
The Xeon Gold 5218 is manufactured by Intel. It was released in 2 April 2019 (6 years ago). It is based on the Cascade Lake (2019−2020) architecture. It features 16 cores and 32 threads. Base frequency is 2.3 GHz, with boost up to 3.9 GHz. L3 cache: 22 MB. L2 cache: 16 MB. Built on 14 nm process technology. Socket: LGA3647. Thermal design power (TDP): 125 Watt. Memory support: DDR4-2667. Passmark benchmark score: 21,586 points. Launch price was $1,273.
Processing Power
The Core i9-9900X packs 10 cores / 20 threads, while the Xeon Gold 5218 offers 16 cores / 32 threads — the Xeon Gold 5218 has 6 more cores. Boost clocks reach 4.5 GHz on the Core i9-9900X versus 3.9 GHz on the Xeon Gold 5218 — a 14.3% clock advantage for the Core i9-9900X (base: 3.5 GHz vs 2.3 GHz). The Core i9-9900X uses the Skylake (server) (2017−2018) architecture (14 nm), while the Xeon Gold 5218 uses Cascade Lake (2019−2020) (14 nm). In PassMark, the Core i9-9900X scores 21,655 against the Xeon Gold 5218's 21,586 — a 0.3% lead for the Core i9-9900X. L3 cache: 19.25 MB (total) on the Core i9-9900X vs 22 MB on the Xeon Gold 5218.
| Feature | Core i9-9900X | Xeon Gold 5218 |
|---|---|---|
| Cores / Threads | 10 / 20 | 16 / 32+60% |
| Boost Clock | 4.5 GHz+15% | 3.9 GHz |
| Base Clock | 3.5 GHz+52% | 2.3 GHz |
| L3 Cache | 19.25 MB (total) | 22 MB+14% |
| L2 Cache | 1 MB (per core) | 16 MB+1500% |
| Process | 14 nm | 14 nm |
| Architecture | Skylake (server) (2017−2018) | Cascade Lake (2019−2020) |
| PassMark | 21,655 | 21,586 |
| Cinebench R23 Multi | 13,985 | — |
| Geekbench 6 Single | 1,459 | — |
| Geekbench 6 Multi | 9,475 | — |
Memory & Platform
The Core i9-9900X uses the LGA2066 socket (PCIe 3.0), while the Xeon Gold 5218 uses LGA3647 (PCIe 3.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR4-2666 on the Core i9-9900X versus 2666 on the Xeon Gold 5218 — the Xeon Gold 5218 supports 199.4% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Xeon Gold 5218 supports up to 768 of RAM compared to 128 GB — 142.9% more capacity for professional workloads. Memory channels: 4 (Core i9-9900X) vs 6 (Xeon Gold 5218). PCIe lanes: 44 (Core i9-9900X) vs 48 (Xeon Gold 5218) — the Xeon Gold 5218 offers 4 more lanes for additional GPUs or NVMe drives. Chipset compatibility: X299 (Core i9-9900X) and C621 (Xeon Gold 5218).
| Feature | Core i9-9900X | Xeon Gold 5218 |
|---|---|---|
| Socket | LGA2066 | LGA3647 |
| PCIe Generation | PCIe 3.0 | PCIe 3.0 |
| Max RAM Speed | DDR4-2666 | 2666+66550% |
| Max RAM Capacity | 128 GB+17476167% | 768 |
| RAM Channels | 4 | 6+50% |
| ECC Support | ❌ | ✅ |
| PCIe Lanes | 44 | 48+9% |
Advanced Features
Only the Core i9-9900X 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. Both support VT-x, VT-d virtualization.
| Feature | Core i9-9900X | Xeon Gold 5218 |
|---|---|---|
| Integrated GPU | No | No |
| IGPU Model | — | None |
| Unlocked | Yes | No |
| AVX-512 | Yes | Yes |
| Virtualization | VT-x, VT-d | VT-x, VT-d |
Value Analysis
The Core i9-9900X launched at $989 MSRP, while the Xeon Gold 5218 debuted at $1273. At current prices ($300 vs $500), the Core i9-9900X is $200 cheaper. In terms of value (PassMark points per dollar), the Core i9-9900X delivers 72.2 pts/$ vs 43.2 pts/$ for the Xeon Gold 5218 — making the Core i9-9900X the 50.3% better value option.
| Feature | Core i9-9900X | Xeon Gold 5218 |
|---|---|---|
| MSRP | $989-22% | $1273 |
| Avg Price (30d) | $300-40% | $500 |
| Performance per Dollar | 72.2+67% | 43.2 |
| Release Date | 2018 | 2019 |
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