Core i5-3570K vs Xeon E5645
Core i5-3570K
Xeon E5645
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 i5-3570K is positioned at rank 749 and the Xeon E5645 is on rank 669, so the Xeon E5645 offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Core i5-3570K
Performance Per Dollar Xeon E5645
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Core i5-3570K | Xeon E5645 |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ✅ More affordable ($35) | ⚠️ Higher cost ($294) |
| Longevity | 🛑 Legacy (Ivy Bridge (2012−2013) / 22 nm) | 🛑 Legacy (Westmere-EP (2010−2011) / 32 nm) |
💎 Value Proposition
| Insight | Core i5-3570K | Xeon E5645 |
|---|---|---|
| Cost Efficiency | ✅ Better overall value (+745%) | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($35) | ⚠️ Higher cost ($294) |
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 i5-3570K and Xeon E5645
Core i5-3570K
The Core i5-3570K is manufactured by Intel. It was released in 29 April 2012 (13 years ago). It is based on the Ivy Bridge (2012−2013) architecture. It features 4 cores and 4 threads. Base frequency is 3.4 GHz, with boost up to 3.8 GHz. L3 cache: 6 MB (total). L2 cache: 256K (per core). Built on 22 nm process technology. Socket: LGA1155. Thermal design power (TDP): 77 Watt. Memory support: DDR3. Passmark benchmark score: 4,971 points. Launch price was $235.
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.
Processing Power
The Core i5-3570K packs 4 cores / 4 threads, while the Xeon E5645 offers 6 cores / 12 threads — the Xeon E5645 has 2 more cores. Boost clocks reach 3.8 GHz on the Core i5-3570K versus 2.67 GHz on the Xeon E5645 — a 34.9% clock advantage for the Core i5-3570K (base: 3.4 GHz vs 2.4 GHz). The Core i5-3570K uses the Ivy Bridge (2012−2013) architecture (22 nm), while the Xeon E5645 uses Westmere-EP (2010−2011) (32 nm). In PassMark, the Core i5-3570K scores 4,971 against the Xeon E5645's 4,942 — a 0.6% lead for the Core i5-3570K. L3 cache: 6 MB (total) on the Core i5-3570K vs 12 MB (total) on the Xeon E5645.
| Feature | Core i5-3570K | Xeon E5645 |
|---|---|---|
| Cores / Threads | 4 / 4 | 6 / 12+50% |
| Boost Clock | 3.8 GHz+42% | 2.67 GHz |
| Base Clock | 3.4 GHz+42% | 2.4 GHz |
| L3 Cache | 6 MB (total) | 12 MB (total)+100% |
| L2 Cache | 256K (per core) | 256 kB (per core) |
| Process | 22 nm-31% | 32 nm |
| Architecture | Ivy Bridge (2012−2013) | Westmere-EP (2010−2011) |
| PassMark | 4,971 | 4,942 |
| Geekbench 6 Single | 1,000 | — |
Memory & Platform
The Core i5-3570K uses the LGA1155 socket (PCIe 3.0), while the Xeon E5645 uses LGA1366 (PCIe 5.0) — making them incompatible on the same motherboard. Both support up to DDR3-1600 memory speed. The Xeon E5645 supports up to 288 GB of RAM compared to 32 GB — 160% more capacity for professional workloads. Memory channels: 2 (Core i5-3570K) vs 3 (Xeon E5645). PCIe lanes: 16 (Core i5-3570K) vs 0 (Xeon E5645) — the Core i5-3570K offers 16 more lanes for additional GPUs or NVMe drives.
| Feature | Core i5-3570K | Xeon E5645 |
|---|---|---|
| Socket | LGA1155 | LGA1366 |
| PCIe Generation | PCIe 3.0 | PCIe 5.0+67% |
| Max RAM Speed | DDR3-1600 | DDR3-1333 |
| Max RAM Capacity | 32 GB | 288 GB+800% |
| RAM Channels | 2 | 3+50% |
| ECC Support | ❌ | ✅ |
| PCIe Lanes | 16 | 0 |
Advanced Features
Only the Core i5-3570K has an unlocked multiplier for overclocking — a significant advantage for enthusiasts seeking extra performance. Virtualization support: VT-x, EPT (Core i5-3570K) vs VT-x (Xeon E5645). The Core i5-3570K includes integrated graphics (HD Graphics 4000), while the Xeon E5645 requires a dedicated GPU. Primary use case: Core i5-3570K targets Legacy Gaming Desktop, Xeon E5645 targets Server. Direct competitor: Core i5-3570K rivals FX-8350.
| Feature | Core i5-3570K | Xeon E5645 |
|---|---|---|
| Integrated GPU | Yes | No |
| IGPU Model | HD Graphics 4000 | — |
| Unlocked | Yes | No |
| AVX-512 | No | No |
| Virtualization | VT-x, EPT | VT-x |
| Target Use | Legacy Gaming Desktop | Server |
Value Analysis
The Core i5-3570K launched at $225 MSRP, while the Xeon E5645 debuted at $294.
| Feature | Core i5-3570K | Xeon E5645 |
|---|---|---|
| MSRP | $225-23% | $294 |
| Avg Price (30d) | $35 | — |
| Release Date | 2012 | 2010 |
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The most powerful cpus ranked by PassMark CPU Mark benchmark scores.
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