Core i5-1245U vs Ryzen 7 5800X
Core i5-1245U
Popular choices:
Ryzen 7 5800X
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. The Core i5-1245U is positioned at rank #535 in our cost-efficiency ranking, representing a Lower cost-benefit for your build. Components placed above yours deliver better value for money.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Core i5-1245U
Performance Per Dollar Ryzen 7 5800X
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Core i5-1245U | Ryzen 7 5800X |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ✅ More affordable ($0) | ⚠️ Higher cost ($180) |
| Longevity | ✨ Modern (Alder Lake-U (2022) / Intel 7 nm) | ✨ Modern (Vermeer (Zen 3) (2020−2022) / 7 nm, 12 nm) |
💎 Value Proposition
| Insight | Core i5-1245U | Ryzen 7 5800X |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($0) | ⚠️ Higher cost ($180) |
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 i5-1245U and Ryzen 7 5800X
Core i5-1245U
The Core i5-1245U is manufactured by Intel. It was released in 23 February 2022 (3 years ago). It is based on the Alder Lake-U (2022) architecture. It features 10 cores and 12 threads. Base frequency is 1.6 GHz, with boost up to 4.4 GHz. L3 cache: 12 MB (total). L2 cache: 1.25 MB (per core). Built on Intel 7 nm process technology. Socket: FCBGA1744. Thermal design power (TDP): 15 Watt. Memory support: DDR4, DDR5. Passmark benchmark score: 12,964 points. Launch price was $149.
Ryzen 7 5800X
The Ryzen 7 5800X is manufactured by AMD. It was released in 5 November 2020 (5 years ago). It is based on the Vermeer (Zen 3) (2020−2022) architecture. It features 8 cores and 16 threads. Base frequency is 3.8 GHz, with boost up to 4.7 GHz. L3 cache: 32 MB. L2 cache: 512K (per core). Built on 7 nm, 12 nm process technology. Socket: AM4. Thermal design power (TDP): 105 Watt. Memory support: DDR4. Passmark benchmark score: 27,712 points. Launch price was $449.
Processing Power
The Core i5-1245U packs 10 cores / 12 threads, while the Ryzen 7 5800X offers 8 cores / 16 threads — the Core i5-1245U has 2 more cores. Boost clocks reach 4.4 GHz on the Core i5-1245U versus 4.7 GHz on the Ryzen 7 5800X — a 6.6% clock advantage for the Ryzen 7 5800X (base: 1.6 GHz vs 3.8 GHz). The Core i5-1245U uses the Alder Lake-U (2022) architecture (Intel 7 nm), while the Ryzen 7 5800X uses Vermeer (Zen 3) (2020−2022) (7 nm, 12 nm). In PassMark, the Core i5-1245U scores 12,964 against the Ryzen 7 5800X's 27,712 — a 72.5% lead for the Ryzen 7 5800X. L3 cache: 12 MB (total) on the Core i5-1245U vs 32 MB on the Ryzen 7 5800X.
| Feature | Core i5-1245U | Ryzen 7 5800X |
|---|---|---|
| Cores / Threads | 10 / 12+25% | 8 / 16 |
| Boost Clock | 4.4 GHz | 4.7 GHz+7% |
| Base Clock | 1.6 GHz | 3.8 GHz+137% |
| L3 Cache | 12 MB (total) | 32 MB+167% |
| L2 Cache | 1.25 MB (per core)+150% | 512K (per core) |
| Process | Intel 7 nm | 7 nm, 12 nm |
| Architecture | Alder Lake-U (2022) | Vermeer (Zen 3) (2020−2022) |
| PassMark | 12,964 | 27,712+114% |
| Geekbench 6 Single | 2,150 | — |
Memory & Platform
The Core i5-1245U uses the FCBGA1744 socket (PCIe 5.0), while the Ryzen 7 5800X uses AM4 (PCIe 4.0) — making them incompatible on the same motherboard. Maximum memory speed reaches LPDDR5-5200 on the Core i5-1245U versus DDR4-3200 on the Ryzen 7 5800X — the Core i5-1245U supports 22.2% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Ryzen 7 5800X supports up to 128 GB of RAM compared to 64 GB — 66.7% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 20 (Core i5-1245U) vs 24 (Ryzen 7 5800X) — the Ryzen 7 5800X offers 4 more lanes for additional GPUs or NVMe drives.
| Feature | Core i5-1245U | Ryzen 7 5800X |
|---|---|---|
| Socket | FCBGA1744 | AM4 |
| PCIe Generation | PCIe 5.0+25% | PCIe 4.0 |
| Max RAM Speed | LPDDR5-5200+25% | DDR4-3200 |
| Max RAM Capacity | 64 GB | 128 GB+100% |
| RAM Channels | 2 | 2 |
| ECC Support | ❌ | ✅ |
| PCIe Lanes | 20 | 24+20% |
Advanced Features
Only the Ryzen 7 5800X has an unlocked multiplier for overclocking — a significant advantage for enthusiasts seeking extra performance. Virtualization support: VT-x, VT-d, EPT (Core i5-1245U) vs AMD-V (Ryzen 7 5800X). The Core i5-1245U includes integrated graphics (Iris Xe Graphics 80EU), while the Ryzen 7 5800X requires a dedicated GPU. Primary use case: Core i5-1245U targets Business Laptop, Ryzen 7 5800X targets Desktop. Direct competitor: Core i5-1245U rivals Ryzen 5 PRO 6650U.
| Feature | Core i5-1245U | Ryzen 7 5800X |
|---|---|---|
| Integrated GPU | Yes | No |
| IGPU Model | Iris Xe Graphics 80EU | — |
| Unlocked | No | Yes |
| AVX-512 | No | No |
| Virtualization | VT-x, VT-d, EPT | AMD-V |
| Target Use | Business Laptop | Desktop |
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