Core i7-6800K vs Xeon E5-4655 v4
Core i7-6800K
Xeon E5-4655 v4
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 i7-6800K is positioned at rank 691 and the Xeon E5-4655 v4 is on rank 1019, so the Core i7-6800K offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Core i7-6800K
Performance Per Dollar Xeon E5-4655 v4
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Core i7-6800K | Xeon E5-4655 v4 |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ✅ More affordable ($120) | ⚠️ Higher cost ($4,616) |
| Longevity | 🛑 Legacy (Broadwell-E (2016) / 14 nm) | 🛑 Legacy (Broadwell (2015−2019) / 14 nm) |
💎 Value Proposition
| Insight | Core i7-6800K | Xeon E5-4655 v4 |
|---|---|---|
| Cost Efficiency | ✅ Better overall value (+3677%) | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($120) | ⚠️ Higher cost ($4,616) |
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 i7-6800K and Xeon E5-4655 v4
Core i7-6800K
The Core i7-6800K 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 6 cores and 12 threads. Base frequency is 3.4 GHz, with boost up to 3.8 GHz. L3 cache: 15 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: 10,715 points. Launch price was $345.
Xeon E5-4655 v4
The Xeon E5-4655 v4 is manufactured by Intel. It was released in 20 June 2016 (9 years ago). It is based on the Broadwell (2015−2019) architecture. It features 8 cores and 16 threads. Base frequency is 2.5 GHz, with boost up to 3.2 GHz. L3 cache: 30 MB. L2 cache: 2 MB. Built on 14 nm process technology. Socket: LGA2011. Thermal design power (TDP): 135 Watt. Memory support: DDR4. Passmark benchmark score: 10,912 points. Launch price was $4,616.
Processing Power
The Core i7-6800K packs 6 cores / 12 threads, while the Xeon E5-4655 v4 offers 8 cores / 16 threads — the Xeon E5-4655 v4 has 2 more cores. Boost clocks reach 3.8 GHz on the Core i7-6800K versus 3.2 GHz on the Xeon E5-4655 v4 — a 17.1% clock advantage for the Core i7-6800K (base: 3.4 GHz vs 2.5 GHz). The Core i7-6800K uses the Broadwell-E (2016) architecture (14 nm), while the Xeon E5-4655 v4 uses Broadwell (2015−2019) (14 nm). In PassMark, the Core i7-6800K scores 10,715 against the Xeon E5-4655 v4's 10,912 — a 1.8% lead for the Xeon E5-4655 v4. L3 cache: 15 MB (total) on the Core i7-6800K vs 30 MB on the Xeon E5-4655 v4.
| Feature | Core i7-6800K | Xeon E5-4655 v4 |
|---|---|---|
| Cores / Threads | 6 / 12 | 8 / 16+33% |
| Boost Clock | 3.8 GHz+19% | 3.2 GHz |
| Base Clock | 3.4 GHz+36% | 2.5 GHz |
| L3 Cache | 15 MB (total) | 30 MB+100% |
| L2 Cache | 256 kB (per core) | 2 MB+700% |
| Process | 14 nm | 14 nm |
| Architecture | Broadwell-E (2016) | Broadwell (2015−2019) |
| PassMark | 10,715 | 10,912+2% |
Memory & Platform
Both processors use the LGA2011 socket with PCIe 3.0.
| Feature | Core i7-6800K | Xeon E5-4655 v4 |
|---|---|---|
| Socket | LGA2011 | LGA2011 |
| PCIe Generation | PCIe 3.0 | PCIe 5.0+67% |
| Max RAM Speed | — | DDR4-2400 |
| Max RAM Capacity | — | 1536 GB |
| RAM Channels | — | 4 |
| ECC Support | — | ✅ |
| PCIe Lanes | — | 40 |
Advanced Features
Virtualization: not specified (Core i7-6800K) / VT-x, VT-d (Xeon E5-4655 v4). Primary use case: Xeon E5-4655 v4 targets Server.
| Feature | Core i7-6800K | Xeon E5-4655 v4 |
|---|---|---|
| Integrated GPU | — | No |
| Unlocked | — | No |
| AVX-512 | — | No |
| Virtualization | — | VT-x, VT-d |
| Target Use | — | Server |
Value Analysis
The Core i7-6800K launched at $434 MSRP, while the Xeon E5-4655 v4 debuted at $4616.
| Feature | Core i7-6800K | Xeon E5-4655 v4 |
|---|---|---|
| MSRP | $434-91% | $4616 |
| Avg Price (30d) | $120 | — |
| Release Date | 2016 | 2016 |
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