Core i5-1155G7 vs Core i7-5820K
Core i5-1155G7
Core i7-5820K
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 i5-1155G7 is positioned at rank 677 and the Core i7-5820K is on rank 686, so the Core i5-1155G7 offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Core i5-1155G7
Performance Per Dollar Core i7-5820K
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Core i5-1155G7 | Core i7-5820K |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ✅ More affordable ($0) | ⚠️ Higher cost ($103) |
| Longevity | ✨ Modern (Tiger Lake-UP3 (2020−2021) / 10 nm SuperFin) | 🛑 Legacy (Haswell-E (2014) / 22 nm) |
💎 Value Proposition
| Insight | Core i5-1155G7 | Core i7-5820K |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($0) | ⚠️ Higher cost ($103) |
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 i5-1155G7 and Core i7-5820K
Core i5-1155G7
The Core i5-1155G7 is manufactured by Intel. It was released in 31 May 2021 (4 years ago). It is based on the Tiger Lake-UP3 (2020−2021) architecture. It features 4 cores and 8 threads. Base frequency is 2.5 GHz, with boost up to 4.5 GHz. L3 cache: 8 MB (total). L2 cache: 1.25 MB (per core). Built on 10 nm SuperFin process technology. Socket: FCBGA1449. Thermal design power (TDP): 28 Watt. Memory support: DDR4. Passmark benchmark score: 9,686 points. Launch price was $309.
Core i7-5820K
The Core i7-5820K is manufactured by Intel. It was released in 1 September 2014 (11 years ago). It is based on the Haswell-E (2014) architecture. It features 6 cores and 12 threads. Base frequency is 3.3 GHz, with boost up to 3.6 GHz. L3 cache: 15 MB (total). L2 cache: 256 kB (per core). Built on 22 nm process technology. Socket: LGA2011. Thermal design power (TDP): 140 Watt. Memory support: DDR4. Passmark benchmark score: 9,826 points. Launch price was $410.
Processing Power
The Core i5-1155G7 packs 4 cores / 8 threads, while the Core i7-5820K offers 6 cores / 12 threads — the Core i7-5820K has 2 more cores. Boost clocks reach 4.5 GHz on the Core i5-1155G7 versus 3.6 GHz on the Core i7-5820K — a 22.2% clock advantage for the Core i5-1155G7 (base: 2.5 GHz vs 3.3 GHz). The Core i5-1155G7 uses the Tiger Lake-UP3 (2020−2021) architecture (10 nm SuperFin), while the Core i7-5820K uses Haswell-E (2014) (22 nm). In PassMark, the Core i5-1155G7 scores 9,686 against the Core i7-5820K's 9,826 — a 1.4% lead for the Core i7-5820K. L3 cache: 8 MB (total) on the Core i5-1155G7 vs 15 MB (total) on the Core i7-5820K.
| Feature | Core i5-1155G7 | Core i7-5820K |
|---|---|---|
| Cores / Threads | 4 / 8 | 6 / 12+50% |
| Boost Clock | 4.5 GHz+25% | 3.6 GHz |
| Base Clock | 2.5 GHz | 3.3 GHz+32% |
| L3 Cache | 8 MB (total) | 15 MB (total)+88% |
| L2 Cache | 1.25 MB (per core)+400% | 256 kB (per core) |
| Process | 10 nm SuperFin-55% | 22 nm |
| Architecture | Tiger Lake-UP3 (2020−2021) | Haswell-E (2014) |
| PassMark | 9,686 | 9,826+1% |
| Cinebench R23 Multi | — | 5,700 |
| Geekbench 6 Single | — | 1,134 |
| Geekbench 6 Multi | — | 5,383 |
Memory & Platform
The Core i5-1155G7 uses the FCBGA1449 socket (PCIe 4.0), while the Core i7-5820K uses LGA2011 (PCIe 3.0) — making them incompatible on the same motherboard.
| Feature | Core i5-1155G7 | Core i7-5820K |
|---|---|---|
| Socket | FCBGA1449 | LGA2011 |
| PCIe Generation | PCIe 4.0+33% | PCIe 3.0 |
| Max RAM Speed | — | DDR4-2133 |
| Max RAM Capacity | — | 64 GB |
| RAM Channels | — | 4 |
| ECC Support | — | ❌ |
| PCIe Lanes | — | 28 |
Advanced Features
Virtualization: not specified (Core i5-1155G7) / Yes (Core i7-5820K). Primary use case: Core i7-5820K targets Enthusiast Workstation. Direct competitor: Core i7-5820K rivals Ryzen 5 1600.
| Feature | Core i5-1155G7 | Core i7-5820K |
|---|---|---|
| Integrated GPU | — | No |
| Unlocked | — | Yes |
| AVX-512 | — | No |
| Virtualization | — | Yes |
| Target Use | — | Enthusiast Workstation |
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