Intel Core i7-5820K vs Intel Core Ultra 5 245K
20.7Single-core83.2
30.2Multi-core70.2
37.1Gamingspec-based58.4
2 spec wins — Intel Core i7-5820K17 spec wins — Intel Core Ultra 5 245K
InnoReviews verdict
Intel Core Ultra 5 245K wins this desktop processor face-off, 71.2 to 29.1, pulling ahead mainly in single-core (+63) and multi-core (+40). Intel Core i7-5820K still makes sense if its price or standout specs fit your needs better.
Which would you pick?
Key differences
Reasons to pick the Intel Core i7-5820K
- 100% higher Memory channels: 4 vs 2
- 17% higher CPU PCIe lanes: 28 vs 24
Reasons to pick the Intel Core Ultra 5 245K
- Stronger single-core score: 83 vs 21
- Stronger multi-core score: 70 vs 30
- 1633% higher L2 cache: 26 MB vs 2 MB
- 300% higher Max memory: 256 GB vs 64 GB
- 292% higher Cinebench R23 (multi): 25,066 vs 6,400
- Lower launch price: $309 vs $389
General
| Spec | Intel Core i7-5820K | Intel Core Ultra 5 245K |
|---|---|---|
| Announced | 2014 | 2024 |
| Socket | LGA2011-v3 | LGA1851 |
| Process | 22 nm | 3 nm+86% |
| Base TDP | 140 W | 125 W+11% |
| Max turbo power | — | 159 W |
| Unlocked multiplier | Yes | Yes |
| Cooler included | No | No |
Cores & Clocks
| Spec | Intel Core i7-5820K | Intel Core Ultra 5 245K |
|---|---|---|
| Cores | 6 | 14+133% |
| Performance cores | 6 | 6 |
| Efficiency cores | 0 | 8 |
| Threads | 12 | 14+17% |
| Base clock | 3.3 GHz | 4.2 GHz+27% |
| Boost clock | 3.6 GHz | 5.2 GHz+44% |
| L2 cache | 2 MB | 26 MB+1633% |
| L3 cache | 15 MB | 24 MB+60% |
Integrated GPU
| Spec | Intel Core i7-5820K | Intel Core Ultra 5 245K |
|---|---|---|
| iGPU | — | Intel Graphics |
| iGPU clock | — | 1,900 MHz |
Memory
| Spec | Intel Core i7-5820K | Intel Core Ultra 5 245K |
|---|---|---|
| Memory support | DDR4-2133 | DDR5-6400 |
| Max memory | 64 GB | 256 GB+300% |
| Memory channels | 4+100% | 2 |
Platform
| Spec | Intel Core i7-5820K | Intel Core Ultra 5 245K |
|---|---|---|
| PCIe version | 3 | 5+67% |
| CPU PCIe lanes | 28+17% | 24 |
Benchmarks
| Spec | Intel Core i7-5820K | Intel Core Ultra 5 245K |
|---|---|---|
| Geekbench 6 (single) | 1,040Bottom 6% | 3,040+192%Top 17% |
| Geekbench 6 (multi) | 5,100Bottom 24% | 17,575+245%Top 23% |
| Cinebench R23 (single) | 890Bottom 5% | 2,132+140%Top 17% |
| Cinebench R23 (multi) | 6,400Bottom 19% | 25,066+292%Top 20% |
| PassMark | 12,700Bottom 20% | 43,049+239%Top 22% |
Related comparisons
Intel Core i7-5820Kvs Intel Core i5-8400VSIntel Core i7-5820Kvs Intel Core i3-10100FVSIntel Core i7-5820Kvs Intel Core i7-5930KVSIntel Core i7-5820Kvs Intel Core i5-9400FVSIntel Core Ultra 5 245Kvs AMD Ryzen 7 9700XVSIntel Core Ultra 5 245Kvs AMD Ryzen 9 5950XVSIntel Core Ultra 5 245Kvs AMD Ryzen 7 7800X3DVSIntel Core Ultra 5 245Kvs Intel Core i9-12900KVS