Core i5-8400 vs Xeon Silver 4108
Core i5-8400
Xeon Silver 4108
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. The Core i5-8400 is positioned at rank 421 and the Xeon Silver 4108 is on rank 306, so the Xeon Silver 4108 offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Core i5-8400
Performance Per Dollar Xeon Silver 4108
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Core i5-8400 | Xeon Silver 4108 |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ⚠️ Higher cost ($95) | ✅ More affordable ($46) |
| Longevity | ✨ Modern (Coffee Lake-S (2017−2018) / 14 nm) | ✨ Modern (Skylake (server) (2017−2018) / 14 nm) |
💎 Value Proposition
| Insight | Core i5-8400 | Xeon Silver 4108 |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ✅ Better overall value (+105%) |
| Upfront Cost | ⚠️ Higher cost ($95) | ✅ More affordable ($46) |
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 i5-8400 and Xeon Silver 4108
Core i5-8400
The Core i5-8400 is manufactured by Intel. It was released in 5 October 2017 (8 years ago). It is based on the Coffee Lake-S (2017−2018) architecture. It features 6 cores and 6 threads. Base frequency is 2.8 GHz, with boost up to 4 GHz. L3 cache: 9 MB (total). L2 cache: 256K (per core). Built on 14 nm process technology. Socket: LGA1151. Thermal design power (TDP): 65 Watt. Memory support: DDR3, DDR4. Passmark benchmark score: 9,229 points. Launch price was $182.
Xeon Silver 4108
The Xeon Silver 4108 is manufactured by Intel. It was released in 11 July 2017 (8 years ago). It is based on the Skylake (server) (2017−2018) architecture. It features 8 cores and 16 threads. Base frequency is 1.8 GHz, with boost up to 3 GHz. L3 cache: 11 MB. L2 cache: 8 MB. Built on 14 nm process technology. Socket: LGA3647. Thermal design power (TDP): 85 Watt. Memory support: DDR4-2400. Passmark benchmark score: 9,177 points. Launch price was $417.
Processing Power
The Core i5-8400 packs 6 cores / 6 threads, while the Xeon Silver 4108 offers 8 cores / 16 threads — the Xeon Silver 4108 has 2 more cores. Boost clocks reach 4 GHz on the Core i5-8400 versus 3 GHz on the Xeon Silver 4108 — a 28.6% clock advantage for the Core i5-8400 (base: 2.8 GHz vs 1.8 GHz). The Core i5-8400 uses the Coffee Lake-S (2017−2018) architecture (14 nm), while the Xeon Silver 4108 uses Skylake (server) (2017−2018) (14 nm). In PassMark, the Core i5-8400 scores 9,229 against the Xeon Silver 4108's 9,177 — a 0.6% lead for the Core i5-8400. L3 cache: 9 MB (total) on the Core i5-8400 vs 11 MB on the Xeon Silver 4108.
| Feature | Core i5-8400 | Xeon Silver 4108 |
|---|---|---|
| Cores / Threads | 6 / 6 | 8 / 16+33% |
| Boost Clock | 4 GHz+33% | 3 GHz |
| Base Clock | 2.8 GHz+56% | 1.8 GHz |
| L3 Cache | 9 MB (total) | 11 MB+22% |
| L2 Cache | 256K (per core) | 8 MB+3100% |
| Process | 14 nm | 14 nm |
| Architecture | Coffee Lake-S (2017−2018) | Skylake (server) (2017−2018) |
| PassMark | 9,229 | 9,177 |
Memory & Platform
The Core i5-8400 uses the LGA1151 socket (PCIe 3.0), while the Xeon Silver 4108 uses LGA3647 (PCIe 3.0) — making them incompatible on the same motherboard.
| Feature | Core i5-8400 | Xeon Silver 4108 |
|---|---|---|
| Socket | LGA1151 | LGA3647 |
| PCIe Generation | PCIe 3.0 | PCIe 3.0 |
| Max RAM Speed | DDR4-2666 | — |
| Max RAM Capacity | 128 GB | — |
| RAM Channels | 2 | — |
| ECC Support | ❌ | — |
| PCIe Lanes | 16 | — |
Advanced Features
Virtualization: VT-x, VT-d (Core i5-8400) / not specified (Xeon Silver 4108). The Core i5-8400 includes integrated graphics (UHD Graphics 630), while the Xeon Silver 4108 requires a dedicated GPU. Primary use case: Core i5-8400 targets Desktop.
| Feature | Core i5-8400 | Xeon Silver 4108 |
|---|---|---|
| Integrated GPU | Yes | — |
| IGPU Model | UHD Graphics 630 | — |
| Unlocked | No | — |
| AVX-512 | No | — |
| Virtualization | VT-x, VT-d | — |
| Target Use | Desktop | — |
Value Analysis
The Core i5-8400 launched at $182 MSRP, while the Xeon Silver 4108 debuted at $417. At current prices ($95 vs $46), the Xeon Silver 4108 is $49 cheaper. In terms of value (PassMark points per dollar), the Core i5-8400 delivers 97.1 pts/$ vs 199.5 pts/$ for the Xeon Silver 4108 — making the Xeon Silver 4108 the 69% better value option.
| Feature | Core i5-8400 | Xeon Silver 4108 |
|---|---|---|
| MSRP | $182-56% | $417 |
| Avg Price (30d) | $95 | $46-52% |
| Performance per Dollar | 97.1 | 199.5+105% |
| Release Date | 2017 | 2017 |
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