Xeon E5645 vs Core i5-13600K
Xeon E5645
Core i5-13600K
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. The Xeon E5645 is positioned at rank #669 in our cost-efficiency ranking, representing a Lower cost-benefit for your build. 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 E5645
Performance Per Dollar Core i5-13600K
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Xeon E5645 | Core i5-13600K |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ✅ More affordable ($294) | ⚠️ Higher cost ($319) |
| Longevity | 🛑 Legacy (Westmere-EP (2010−2011) / 32 nm) | ✨ Modern (Raptor Lake, Raptor Cove, Gracemont (2022) / Intel 7 nm) |
💎 Value Proposition
| Insight | Xeon E5645 | Core i5-13600K |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ✅ Better overall value (+602%) |
| Upfront Cost | ✅ More affordable ($294) | ⚠️ Higher cost ($319) |
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 E5645 and Core i5-13600K
Xeon E5645
The Xeon E5645 is manufactured by Intel. It was released in 16 March 2010 (15 years ago). It is based on the Westmere-EP (2010−2011) architecture. It features 6 cores and 12 threads. Base frequency is 2.4 GHz, with boost up to 2.67 GHz. L3 cache: 12 MB (total). L2 cache: 256 kB (per core). Built on 32 nm process technology. Socket: LGA1366. Thermal design power (TDP): 80 Watt. Memory support: DDR3. Passmark benchmark score: 4,942 points. Launch price was $294.
Core i5-13600K
The Core i5-13600K is manufactured by Intel. It was released in 27 September 2022 (3 years ago). It is based on the Raptor Lake, Raptor Cove, Gracemont (2022) architecture. It features 14 cores and 20 threads. Base frequency is 3.5 GHz, with boost up to 5.1 GHz. L3 cache: 24 MB. L2 cache: 2 MB (per core). Built on Intel 7 nm process technology. Socket: LGA1700. Thermal design power (TDP): 125 Watt. Memory support: DDR4, DDR5. Passmark benchmark score: 37,655 points. Launch price was $319.
Processing Power
The Xeon E5645 packs 6 cores / 12 threads, while the Core i5-13600K offers 14 cores / 20 threads — the Core i5-13600K has 8 more cores. Boost clocks reach 2.67 GHz on the Xeon E5645 versus 5.1 GHz on the Core i5-13600K — a 62.5% clock advantage for the Core i5-13600K (base: 2.4 GHz vs 3.5 GHz). The Xeon E5645 uses the Westmere-EP (2010−2011) architecture (32 nm), while the Core i5-13600K uses Raptor Lake, Raptor Cove, Gracemont (2022) (Intel 7 nm). In PassMark, the Xeon E5645 scores 4,942 against the Core i5-13600K's 37,655 — a 153.6% lead for the Core i5-13600K. L3 cache: 12 MB (total) on the Xeon E5645 vs 24 MB on the Core i5-13600K.
| Feature | Xeon E5645 | Core i5-13600K |
|---|---|---|
| Cores / Threads | 6 / 12 | 14 / 20+133% |
| Boost Clock | 2.67 GHz | 5.1 GHz+91% |
| Base Clock | 2.4 GHz | 3.5 GHz+46% |
| L3 Cache | 12 MB (total) | 24 MB+100% |
| L2 Cache | 256 kB (per core) | 2 MB (per core)+700% |
| Process | 32 nm | Intel 7 nm-78% |
| Architecture | Westmere-EP (2010−2011) | Raptor Lake, Raptor Cove, Gracemont (2022) |
| PassMark | 4,942 | 37,655+662% |
Memory & Platform
The Xeon E5645 uses the LGA1366 socket (PCIe 5.0), while the Core i5-13600K uses LGA1700 (PCIe 5.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR3-1333 on the Xeon E5645 versus DDR5-5600 on the Core i5-13600K — the Core i5-13600K supports 50% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Xeon E5645 supports up to 288 GB of RAM compared to 192 GB — 40% more capacity for professional workloads. Memory channels: 3 (Xeon E5645) vs 2 (Core i5-13600K). PCIe lanes: 0 (Xeon E5645) vs 20 (Core i5-13600K) — the Core i5-13600K offers 20 more lanes for additional GPUs or NVMe drives.
| Feature | Xeon E5645 | Core i5-13600K |
|---|---|---|
| Socket | LGA1366 | LGA1700 |
| PCIe Generation | PCIe 5.0 | PCIe 5.0 |
| Max RAM Speed | DDR3-1333 | DDR5-5600+67% |
| Max RAM Capacity | 288 GB+50% | 192 GB |
| RAM Channels | 3+50% | 2 |
| ECC Support | ✅ | ✅ |
| PCIe Lanes | 0 | 20 |
Advanced Features
Only the Core i5-13600K has an unlocked multiplier for overclocking — a significant advantage for enthusiasts seeking extra performance. Virtualization support: VT-x (Xeon E5645) vs VT-x, VT-d (Core i5-13600K). The Core i5-13600K includes integrated graphics (UHD Graphics 770), while the Xeon E5645 requires a dedicated GPU. Primary use case: Xeon E5645 targets Server, Core i5-13600K targets Desktop.
| Feature | Xeon E5645 | Core i5-13600K |
|---|---|---|
| Integrated GPU | No | Yes |
| IGPU Model | — | UHD Graphics 770 |
| Unlocked | No | Yes |
| AVX-512 | No | No |
| Virtualization | VT-x | VT-x, VT-d |
| Target Use | Server | Desktop |
Value Analysis
The Xeon E5645 launched at $294 MSRP, while the Core i5-13600K debuted at $329.
| Feature | Xeon E5645 | Core i5-13600K |
|---|---|---|
| MSRP | $294-11% | $329 |
| Avg Price (30d) | — | $319 |
| Release Date | 2010 | 2022 |
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