Intel Core i7 5820K 6-core LGA1155
The 6-core, 12-thread Haswell-E architecture with a 3.6GHz boost clock and unlocked multiplier provides strong multi-threaded throughput for its era, evidenced by a 9825 PassMark score. Its 15MB of L3 cache and quad-channel memory support on the X99 platform offer a tangible upgrade path over mainstream desktop parts. This processor is best for budget-conscious PC builders seeking a used entry point into older high-end desktop platforms for moderate content creation and multitasking.
Cores 6
Threads 12
Boost Clock 3600 MHz
L3 Cache 15 MB
TDP 140 W
Socket LGA1155
40 Overall Score
Price $330
Snapshot
Pros & Cons
Pros
Cons
- Below average platform (18th percentile)
The proof
Performance
Specifications
Full Specifications
Processor
| Brand | Intel |
| Series | Core i7 |
| Model | 5820K |
| Codename | Haswell-E |
| Class | desktop |
Cores & Clocks
| Cores | 6 |
| Threads | 12 |
| Base Clock | 3300 |
| Boost Clock | 3600 |
Cache
| L2 Cache | 1.5 |
| L3 Cache | 15 MB |
Performance
| PassMark Multi | 9830 |
| PassMark Single | 1991 |
Platform & Power
| Socket | LGA1155 |
| TDP | 140 |
| Unlocked | Yes |
vs Competition
| Spec | Intel Core i7 5820K | AMD Ryzen 7 9800X3D | G.Skill Trident Z Neo | Lenovo Ryzen 5 Sparepart: | WowWee Xeon Gold 5120 | CISCO SYSTEMS - ENTERPRISE Xeon E5-2699v4 |
|---|---|---|---|---|---|---|
| Cores | 6 | 8 | 6 | 6 | 14 | 22 |
| Threads | 12 | 16 | 12 | 12 | 28 | 12 |
| Boost Clock Mhz | 3600 | 5200 | 4200 | 4000 | 3200 | 3600 |
| L3 Cache Mb | 15 | 96 | 32 | 8 | 19.25 | 39 |
| Tdp W | 140 | 120 | 65 | 15 | 105 | - |
| Socket | LGA1155 | AM5 | AMD Socket AM4 | AM4 | LGA 3647 | LGA2011-3 |
| Integrated Graphics | - | AMD Radeon Graphics | - | AMD Integrated Graphics | - | - |
| Compare | Compare | Compare | Compare | Compare |
| Product | AI | Feature | Platform | Efficiency | Multi Thread | Social Proof | Single Thread |
|---|---|---|---|---|---|---|---|
| Intel Core i7 5820K | 61.5 | 62.2 | 17.5 | 47.1 | 61.6 | 38.3 | 52.7 |
| AMD Ryzen 7 9800X3D Compare | 91.2 | 98.4 | 95.1 | 87.5 | 90 | 96.5 | 95.6 |
| G.Skill Trident Z Neo Compare | 72.4 | 87 | 78.2 | 82.9 | 73.4 | 1.5 | 72.3 |
| Lenovo Ryzen 5 Sparepart: Compare | 63.9 | 54.4 | 56.6 | 99.2 | 64.6 | 11.8 | 66.2 |
| WowWee Xeon Gold 5120 Compare | 73.7 | 20.1 | 17.5 | 72.6 | 74.3 | 38.3 | 44.2 |
| CISCO SYSTEMS - ENTERPRISE Xeon E5-2699v4 Compare | 44.2 | 46.1 | 17.5 | 29.7 | 52.4 | 51.2 | 9.9 |
Price
Value & Pricing
From $330
Amazon 1 offer From $330
Price History
Usage Scores
A full written review is coming soon. The specs, scores, prices and charts above are always up to date.
