Intel Core i7-8559U socket: BGA 1528
The Intel Core i7-8559U uses BGA 1528, a soldered performance thin laptop package. The quad core 28 W chip cannot be replaced.
- Socket
- BGA 1528
- Launched
- April 2018
- Cores and threads
- 4 and 8
- Base power
- 28 W
- Codename
- Coffee Lake-U
- Segment
- Mobile (soldered)
- Family
- Intel Core i7
- Clocks
- 2.7 / 4.5 GHz
Intel Core i7-8559U specifications
| Cores | 4 |
|---|---|
| Threads | 8 |
| Core architecture | Coffee Lake-U cores on 14 nm |
| Clocks | 2.7 GHz base, up to 4.5 GHz |
| Cache | 8 MB Intel Smart Cache (L3) |
| Processor base power (TDP) | 28 W |
| Manufacturing process | 14 nm |
| Memory support | DDR4, two channels, up to 32 GB |
| PCI Express | 16 lanes from the CPU, PCIe 3.0 |
| Integrated graphics | Intel Iris Plus Graphics 655 (up to 1.2 GHz, 128 MB eDRAM) |
| Multiplier | Locked |
| Package | FCBGA1528 (soldered) |
Motherboard compatibility
Intel Core i7-8559U needs a motherboard with a BGA 1528 socket. Chipset by chipset data for this codename is not recorded yet. See the BGA 1528 chipset list and the board maker's CPU support list.
BGA 1528 at a glance
| Type | BGA, 1,528 contacts |
|---|---|
| Package size | 46 × 24 mm |
| Introduced | August 2018 |
| Memory | DDR4-2133 to DDR4-2666, LPDDR3-1866 and LPDDR3-2133 plus LPDDR4-2933, two channels, up to 64 GB |
| Cooler mounting holes | Not applicable (soldered) |
What the Core i7-8559U is
The Core i7-8559U packs four cores with eight threads into a 28 W thin laptop envelope. It launched in April 2018 with a 2.7 GHz base and up to 4.5 GHz boost. Intel positions it as the Iris Plus flagship for premium thin bodies that need graphics without a discrete card.
Eight megabytes of Smart Cache support multitasking across eight threads. The 2.7 GHz base sustains office work in thin chassis. Boost to 4.5 GHz lifts single thread bursts in creative apps.
Iris Plus Graphics 655 up to 1200 MHz with 128 MB eDRAM handle 4K displays. The process is 14 nm. DDR4 in two channels suits premium thin designs. Note that cpu_list shows BGA 1526 for this SKU, while Intel and Technical City list FCBGA1528, and this page uses FCBGA1528.
Socket and motherboard compatibility
The 8559U solders to BGA 1528 permanently. Premium thin makers tune 28 W with dual heat pipes for sustained Iris Plus loads. There is no socketed path.
Memory is DDR4 in two channels up to 32 GB. Dual channel operation is critical for Iris Plus frame rates. The How to find your CPU socket type guide confirms FCBGA1528.
BGA 1526 Ice Lake boards cannot take this Coffee Lake part. Contacts and chipsets differ. Laptop replacement is required for more speed.
Memory, PCIe and cooling
DDR4 in two channels up to 32 GB pairs with fast SSDs for premium thin notebooks. Start with 16 GB.
PCIe 3.0 with 16 lanes from the CPU feeds NVMe plus board devices. Most premium thin bodies prioritize storage speed.
Dual pipe 28 W cooling holds boost quietly. No retail pattern exists.
Upgrade paths
Soldered BGA blocks upgrades. SSD expansion where slots allow extends premium life.
Within BGA 1528, the Intel Core i7-8569U offers similar threads with higher base clocks at the same 28 W. The Intel Core i7-8557U trims to 15 W for thinner bodies. Both share BGA 1528 after board checks.
Past BGA 1528 newer thin generations need other sockets. The 8559U covers Iris Plus flagships where graphics must travel.
Frequently asked questions
What socket does the Core i7-8559U use?
It uses BGA 1528 soldered to the thin laptop board, not BGA 1526 as some lists show.
How many cores does the 8559U have?
Four cores with Hyper-Threading give eight threads. Base is 2.7 GHz with boost to 4.5 GHz.
Which graphics does the 8559U include?
Iris Plus 655 up to 1200 MHz with eDRAM.
What memory does the 8559U support?
DDR4 in two channels up to 32 GB.
When did the 8559U launch?
April 2018 with Coffee Lake-U.
Sources and verification
Facts last checked against these sources on . Page last edited on .