Xeon E5-2666 V3 vs Core i5-10600KF
Xeon E5-2666 V3
Core i5-10600KF
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 Xeon E5-2666 V3
Performance Per Dollar Core i5-10600KF
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Xeon E5-2666 V3 | Core i5-10600KF |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ✅ More affordable ($0) | ⚠️ Higher cost ($145) |
| Longevity | 🛑 Legacy (Haswell-EP (2014−2015) / 22 nm) | ✨ Modern (Comet Lake (2020−2025) / 14 nm) |
💎 Value Proposition
| Insight | Xeon E5-2666 V3 | Core i5-10600KF |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($0) | ⚠️ Higher cost ($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 Xeon E5-2666 V3 and Core i5-10600KF
Xeon E5-2666 V3
The Xeon E5-2666 V3 is manufactured by Intel. It was released in 2015-01-01. It is based on the Haswell-EP (2014−2015) architecture. It features 10 cores and 20 threads. Base frequency is 2.9 GHz, with boost up to 3.5 GHz. L3 cache: 25 MB (total). L2 cache: 256K (per core). Built on 22 nm process technology. Socket: LGA2011-3. Thermal design power (TDP): 135 Watt. Memory support: DDR3, DDR4 2133 MHz Quad-channel. Passmark benchmark score: 14,044 points. Launch price was $800.
Core i5-10600KF
The Core i5-10600KF is manufactured by Intel. It was released in 30 April 2020 (5 years ago). It is based on the Comet Lake (2020−2025) architecture. It features 6 cores and 12 threads. Base frequency is 4.1 GHz, with boost up to 4.8 GHz. L3 cache: 12 MB (total). L2 cache: 256K (per core). Built on 14 nm process technology. Socket: LGA1200. Thermal design power (TDP): 125 Watt. Memory support: DDR4-2666. Passmark benchmark score: 14,140 points. Launch price was $149.
Processing Power
The Xeon E5-2666 V3 packs 10 cores / 20 threads, while the Core i5-10600KF offers 6 cores / 12 threads — the Xeon E5-2666 V3 has 4 more cores. Boost clocks reach 3.5 GHz on the Xeon E5-2666 V3 versus 4.8 GHz on the Core i5-10600KF — a 31.3% clock advantage for the Core i5-10600KF (base: 2.9 GHz vs 4.1 GHz). The Xeon E5-2666 V3 uses the Haswell-EP (2014−2015) architecture (22 nm), while the Core i5-10600KF uses Comet Lake (2020−2025) (14 nm). In PassMark, the Xeon E5-2666 V3 scores 14,044 against the Core i5-10600KF's 14,140 — a 0.7% lead for the Core i5-10600KF. L3 cache: 25 MB (total) on the Xeon E5-2666 V3 vs 12 MB (total) on the Core i5-10600KF.
| Feature | Xeon E5-2666 V3 | Core i5-10600KF |
|---|---|---|
| Cores / Threads | 10 / 20+67% | 6 / 12 |
| Boost Clock | 3.5 GHz | 4.8 GHz+37% |
| Base Clock | 2.9 GHz | 4.1 GHz+41% |
| L3 Cache | 25 MB (total)+108% | 12 MB (total) |
| L2 Cache | 256K (per core) | 256K (per core) |
| Process | 22 nm | 14 nm-36% |
| Architecture | Haswell-EP (2014−2015) | Comet Lake (2020−2025) |
| PassMark | 14,044 | 14,140 |
Memory & Platform
The Xeon E5-2666 V3 uses the LGA2011-3 socket (PCIe 3.0), while the Core i5-10600KF uses LGA1200 (PCIe 3.0) — making them incompatible on the same motherboard.
| Feature | Xeon E5-2666 V3 | Core i5-10600KF |
|---|---|---|
| Socket | LGA2011-3 | LGA1200 |
| 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: not specified (Xeon E5-2666 V3) / VT-x, VT-d (Core i5-10600KF). Primary use case: Core i5-10600KF targets Gaming.
| Feature | Xeon E5-2666 V3 | Core i5-10600KF |
|---|---|---|
| Integrated GPU | — | No |
| Unlocked | — | Yes |
| AVX-512 | — | No |
| Virtualization | — | VT-x, VT-d |
| Target Use | — | Gaming |
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