Core i7-8706G vs Core i5-8257U
Core i7-8706G
Core i5-8257U
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 i7-8706G is positioned at rank 916 and the Core i5-8257U is on rank 235, so the Core i5-8257U offers better cost-efficiency for playing games.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Core i7-8706G
Performance Per Dollar Core i5-8257U
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Core i7-8706G | Core i5-8257U |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | Equivalent pricing | Equivalent pricing |
| Longevity | ✨ Modern (Kaby Lake G (2018) / 14 nm) | ✨ Modern (Coffee Lake-U (2018−2019) / 14 nm) |
💎 Value Proposition
| Insight | Core i7-8706G | Core i5-8257U |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | Equivalent pricing | Equivalent pricing |
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 i7-8706G and Core i5-8257U
Core i7-8706G
The Core i7-8706G is manufactured by Intel. It was released in 1 February 2018 (7 years ago). It is based on the Kaby Lake G (2018) architecture. It features 4 cores and 8 threads. Base frequency is 3.1 GHz, with boost up to 4.1 GHz. L3 cache: 8 MB (total). L2 cache: 256K (per core). Built on 14 nm process technology. Socket: FCBGA2270. Thermal design power (TDP): 65 Watt. Memory support: DDR4. Passmark benchmark score: 7,383 points. Launch price was $149.
Core i5-8257U
The Core i5-8257U is manufactured by Intel. It was released in 10 July 2019 (6 years ago). It is based on the Coffee Lake-U (2018−2019) architecture. It features 4 cores and 8 threads. Base frequency is 1.4 GHz, with boost up to 3.9 GHz. L3 cache: 6 MB. L2 cache: 1 MB. Built on 14 nm process technology. Socket: FCBGA1528. Thermal design power (TDP): 15 Watt. Memory support: DDR4. Passmark benchmark score: 7,427 points. Launch price was $149.
Processing Power
Both the Core i7-8706G and Core i5-8257U share an identical 4-core/8-thread configuration. Boost clocks reach 4.1 GHz on the Core i7-8706G versus 3.9 GHz on the Core i5-8257U — a 5% clock advantage for the Core i7-8706G (base: 3.1 GHz vs 1.4 GHz). The Core i7-8706G uses the Kaby Lake G (2018) architecture (14 nm), while the Core i5-8257U uses Coffee Lake-U (2018−2019) (14 nm). In PassMark, the Core i7-8706G scores 7,383 against the Core i5-8257U's 7,427 — a 0.6% lead for the Core i5-8257U. L3 cache: 8 MB (total) on the Core i7-8706G vs 6 MB on the Core i5-8257U.
| Feature | Core i7-8706G | Core i5-8257U |
|---|---|---|
| Cores / Threads | 4 / 8 | 4 / 8 |
| Boost Clock | 4.1 GHz+5% | 3.9 GHz |
| Base Clock | 3.1 GHz+121% | 1.4 GHz |
| L3 Cache | 8 MB (total)+33% | 6 MB |
| L2 Cache | 256K (per core) | 1 MB+300% |
| Process | 14 nm | 14 nm |
| Architecture | Kaby Lake G (2018) | Coffee Lake-U (2018−2019) |
| PassMark | 7,383 | 7,427 |
| Cinebench R23 Multi | — | 4,017 |
| Geekbench 6 Single | — | 1,100 |
| Geekbench 6 Multi | — | 4,000 |
Memory & Platform
The Core i7-8706G uses the FCBGA2270 socket (PCIe 3.0), while the Core i5-8257U uses FCBGA1528 (PCIe 3.0) — making them incompatible on the same motherboard.
| Feature | Core i7-8706G | Core i5-8257U |
|---|---|---|
| Socket | FCBGA2270 | FCBGA1528 |
| PCIe Generation | PCIe 3.0 | PCIe 3.0 |
| Max RAM Speed | — | DDR4-2400 |
| Max RAM Capacity | — | 32 GB |
| RAM Channels | — | 2 |
| ECC Support | — | ❌ |
| PCIe Lanes | — | 16 |
Advanced Features
Virtualization: not specified (Core i7-8706G) / VT-x, VT-d (Core i5-8257U). The Core i5-8257U includes integrated graphics (Intel Iris Plus Graphics 645), while the Core i7-8706G requires a dedicated GPU. Primary use case: Core i5-8257U targets Ultrabook.
| Feature | Core i7-8706G | Core i5-8257U |
|---|---|---|
| Integrated GPU | — | Yes |
| IGPU Model | — | Intel Iris Plus Graphics 645 |
| Unlocked | — | No |
| AVX-512 | — | No |
| Virtualization | — | VT-x, VT-d |
| Target Use | — | Ultrabook |
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