Core i7-6900K vs Xeon Silver 4215R
Core i7-6900K
Xeon Silver 4215R
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 i7-6900K
Performance Per Dollar Xeon Silver 4215R
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Core i7-6900K | Xeon Silver 4215R |
|---|---|---|
| Gaming | Balanced gaming performance | Balanced gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ⚠️ Higher cost ($1,089) | ✅ More affordable ($0) |
| Longevity | 🛑 Legacy (Broadwell-E (2016) / 14 nm) | ✨ Modern (Cascade Lake (2019−2020) / 14 nm) |
💎 Value Proposition
| Insight | Core i7-6900K | Xeon Silver 4215R |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ⚠️ Higher cost ($1,089) | ✅ More affordable ($0) |
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 i7-6900K and Xeon Silver 4215R
Core i7-6900K
The Core i7-6900K is manufactured by Intel. It was released in 31 May 2016 (9 years ago). It is based on the Broadwell-E (2016) architecture. It features 8 cores and 16 threads. Base frequency is 3.2 GHz, with boost up to 4 GHz. L3 cache: 20 MB (total). L2 cache: 256 kB (per core). Built on 14 nm process technology. Socket: LGA2011. Thermal design power (TDP): 140 Watt. Memory support: DDR4. Passmark benchmark score: 14,682 points. Launch price was $1,020.
Xeon Silver 4215R
The Xeon Silver 4215R is manufactured by Intel. It was released in 24 February 2020 (5 years ago). It is based on the Cascade Lake (2019−2020) architecture. It features 8 cores and 16 threads. Base frequency is 3.2 GHz, with boost up to 4 GHz. L3 cache: 11 MB. L2 cache: 8 MB. Built on 14 nm process technology. Socket: LGA3647. Thermal design power (TDP): 130 Watt. Memory support: DDR4-2400. Passmark benchmark score: 14,683 points. Launch price was $794.
Processing Power
Both the Core i7-6900K and Xeon Silver 4215R share an identical 8-core/16-thread configuration. Boost clocks reach 4 GHz on the Core i7-6900K versus 4 GHz on the Xeon Silver 4215R — identical boost frequencies (base: 3.2 GHz vs 3.2 GHz). The Core i7-6900K uses the Broadwell-E (2016) architecture (14 nm), while the Xeon Silver 4215R uses Cascade Lake (2019−2020) (14 nm). In PassMark, the Core i7-6900K scores 14,682 against the Xeon Silver 4215R's 14,683 — a 0% lead for the Xeon Silver 4215R. L3 cache: 20 MB (total) on the Core i7-6900K vs 11 MB on the Xeon Silver 4215R.
| Feature | Core i7-6900K | Xeon Silver 4215R |
|---|---|---|
| Cores / Threads | 8 / 16 | 8 / 16 |
| Boost Clock | 4 GHz | 4 GHz |
| Base Clock | 3.2 GHz | 3.2 GHz |
| L3 Cache | 20 MB (total)+82% | 11 MB |
| L2 Cache | 256 kB (per core) | 8 MB+3100% |
| Process | 14 nm | 14 nm |
| Architecture | Broadwell-E (2016) | Cascade Lake (2019−2020) |
| PassMark | 14,682 | 14,683 |
| Geekbench 6 Single | 1,273 | — |
| Geekbench 6 Multi | 7,591 | — |
Memory & Platform
The Core i7-6900K uses the LGA2011 socket (PCIe 3.0), while the Xeon Silver 4215R uses LGA3647 (PCIe 3.0) — making them incompatible on the same motherboard.
| Feature | Core i7-6900K | Xeon Silver 4215R |
|---|---|---|
| Socket | LGA2011 | LGA3647 |
| PCIe Generation | PCIe 3.0 | PCIe 3.0 |
| Max RAM Speed | DDR4-2400 | — |
| Max RAM Capacity | 128 GB | — |
| RAM Channels | 4 | — |
| ECC Support | ❌ | — |
| PCIe Lanes | 40 | — |
Advanced Features
Virtualization: VT-x, VT-d (Core i7-6900K) / not specified (Xeon Silver 4215R). Primary use case: Core i7-6900K targets High-End Desktop.
| Feature | Core i7-6900K | Xeon Silver 4215R |
|---|---|---|
| Integrated GPU | No | — |
| IGPU Model | None | — |
| Unlocked | Yes | — |
| AVX-512 | No | — |
| Virtualization | VT-x, VT-d | — |
| Target Use | High-End Desktop | — |
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