Intel Core i7 5820K 6-core LGA2011
The 22nm Haswell-E architecture delivers 6 cores and 12 threads with a 3.6GHz boost clock, supported by a substantial 15MB L3 cache for demanding multitasking. Its unlocked multiplier and quad-channel DDR4 memory support on the LGA 2011-v3 socket provide strong overclocking headroom for its era. This processor is best for budget-conscious PC builders seeking a used 6-core chip for older workstation tasks and entry-level content creation.
Snapshot
Pros & Cons
Pros
- Strong social proof (97th percentile) 97th
- Strong user sentiment (93rd percentile) 93rd
- Strong platform (80th percentile) 80th
Cons
What owners think
How owner sentiment changed over time
ExclusiveBased on when customers actually wrote their reviews - so you can see whether early praise held up.
Based on 41 dated customer reviews, grouped by calendar quarter. Period analysis is in English.
The proof
Performance
Specifications
Full Specifications
Processor
| Brand | Intel |
| Series | Core i7 |
| Model | 5820K |
| Codename | Haswell-E |
| Class | desktop |
| Process | 22 |
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 |
Memory
| Memory Type | DDR4 |
| Max Speed | 3200 |
| Channels | 4 |
| Max Memory | 64 |
| ECC | No |
Platform & Power
| Socket | LGA 2011-v3 |
| PCIe | 3 |
| PCIe Lanes | 28 |
| TDP | 140 |
| Unlocked | Yes |
vs Competition
| Spec | Intel Core i7 5820K | AMD Ryzen 7 9800X3D | SMC EPYC 9555P | Dell Inspiron 7700 | HP Celeron 14-dq3000dx | DAKboard CPU v4 |
|---|---|---|---|---|---|---|
| Cores | 6 | 8 | 64 | 10 | 2 | 4 |
| Threads | 12 | 16 | 128 | 12 | 2 | - |
| Boost Clock Mhz | 3600 | 5200 | 4400 | 4700 | 2800 | - |
| L3 Cache Mb | 15 | 96 | 256 | 12 | 4 | - |
| Tdp W | 140 | 120 | 360 | 15 | 6 | - |
| Socket | LGA 2011-v3 | AM5 | AMD Socket SP5 | Intel BGA 1744 | Intel BGA 1338 | BGA |
| Integrated Graphics | - | AMD Radeon Graphics | - | Iris Xe 96EU | Intel UHD Graphics | - |
| Compare | Compare | Compare | Compare | Compare |
| Product | AI | Feature | Platform | User Sentiment | Efficiency | Multi Thread | Social Proof | Single Thread |
|---|---|---|---|---|---|---|---|---|
| Intel Core i7 5820K | 61.5 | 62.2 | 79.9 | 92.6 | 47.1 | 61.6 | 96.5 | 52.7 |
| AMD Ryzen 7 9800X3D Compare | 91.2 | 98.4 | 95.1 | 92.6 | 87.5 | 90 | 96.5 | 95.6 |
| SMC EPYC 9555P Compare | 99.3 | 76.8 | 96.7 | 0 | 90.6 | 99.5 | 1.5 | 88.7 |
| Dell Inspiron 7700 Compare | 62.3 | 69.4 | 70.8 | 0 | 99.4 | 66.4 | 27.4 | 82 |
| HP Celeron 14-dq3000dx Compare | 17.2 | 54.4 | 54.4 | 0 | 32 | 10.9 | 9.1 | 30.2 |
| DAKboard CPU v4 Compare | 12.6 | 20.1 | 17.5 | 0 | 11.9 | 17 | 59.7 | 20 |
Price
Value & Pricing
Amazon 1 offer From ₹20,789
We started tracking prices for this product on Nov 6, 2026. The chart appears once we have more data.
Usage Scores
A full written review is coming soon. The specs, scores, prices and charts above are always up to date.
