8th Gen Intel Core i7 8557U
- iGPU:
- Intel Iris Plus Graphics 645
- Boost/Base Clock:
- 4.5 GHz / 1.7 GHz
- Core/Thread Count:
- 4 Core / 8 Thread
- Cache:
- 8MB L3 + 1MB L2 + 256KB L1
- TDP:
- 28 Watts
- CPU Process Node:
- 14 Nanometers
- CPU Socket:
- FCBGA1528
- CPU Series:
- Coffee Lake
- Memory Support:
- DDR4-2400
- Form Factor:
- Laptop
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Manufacturer: Intel Last updated: September 9, 2026
8th Gen Intel Core i7 8557U Review
The 8th Gen Intel Core i7 8557U is a 4-core, 8-thread ultraportable processor built on Coffee Lake, running a 1.7 GHz base clock that boosts to 4.5 GHz within a 28 Watt TDP, paired with genuinely strong Iris Plus graphics.
The Iris Plus 645 graphics configuration was a real step up from standard UHD graphics of its era, making this chip a popular choice in premium ultraportables wanting better light creative and gaming capability.
Intel Iris Plus Graphics 645
A genuinely stronger integrated GPU than standard UHD graphics of its era, capable of handling light creative work and casual gaming more comfortably.
How Is the Core i7 8557U in Terms of Performance
The 4-core, 8-thread layout with a 28W power envelope gives this chip solid sustained performance for a premium ultraportable, with the strong Iris Plus graphics being a genuine differentiator over standard integrated graphics.
Benchmarks
Cinebench R20 single-core scores of 434 reflect solid per-core performance for a 28W ultraportable chip, appropriate for the premium thin-and-light laptops this processor commonly appeared in.
Specifications
Identity
| Brand | Intel |
|---|---|
| Product Line | Core i7 |
| Model Number | 8557U |
Segment and platform
| Microarchitecture | Coffee Lake, 8th Gen Intel Core |
|---|---|
| Socket | FCBGA1528 |
| Process Node | 14 nm |
Memory
| Memory Type | DDR4-2400, LPDDR3-2133 |
|---|
| Form Factor | Laptop |
|---|---|
| Core/Thread Count | 4 Core / 8 Thread |
| TDP | 28 W |
| iGPU | Intel Iris Plus Graphics 645 |
| Cache | 8MB L3 + 1MB L2 + 256KB L1 |
| Boost/Base Clock | 4.5 GHz / 1.7 GHz |
Expert Review
Reviewed by Burooj Alam. Rated by us, not by users.
Best for
- Premium ultraportable laptops wanting genuinely stronger integrated graphics than standard UHD configurations
Not for
- Buyers needing dedicated gaming or heavy creative graphics capability — a discrete GPU remains necessary for that
FAQs
What are the key specifications of the 8th Gen Intel Core i7 8557U?
The 8th Gen Intel Core i7 8557U is a processor from Intel. Key specs: iGPU Intel Iris Plus Graphics 645, Boost/Base Clock 4.5 GHz / 1.7 GHz, Core/Thread Count 4 Core / 8 Thread, Cache 8MB L3 + 1MB L2 + 256KB L1, TDP 28 Watts.
Will the 8th Gen Intel Core i7 8557U work with my current setup?
The 8th Gen Intel Core i7 8557U lists CPU Socket is FCBGA1528. Check that against the hardware you already own before buying, since this is the field that most often decides whether a part fits.
Who is the 8th Gen Intel Core i7 8557U best suited to?
It suits premium ultraportable laptops wanting genuinely stronger integrated graphics than standard uhd configurations.
What are the drawbacks of the 8th Gen Intel Core i7 8557U?
It is a poor fit for buyers needing dedicated gaming or heavy creative graphics capability — a discrete gpu remains necessary for that.