The processor Intel Core i7-8557U is developed on the 14 nm technology node and architecture Coffee Lake U. Its base clock speed is 1.70 GHz, and maximum clock speed in turbo boost - 3.40 GHz. Intel Core i7-8557U contains 4 processing cores. To make a right choice for computer upgrading, please get familiar with the detailed technical specifications and benchmark results. Check socket compatibility before choosing.
 CPU Cores and Base Frequency |
||||
|---|---|---|---|---|
| Frequency | 1.70 GHz | Cores | 4 | |
| Turbo (1 Core) | 4.50 GHz | CPU Threads | 8 | |
| Turbo (All Cores) | 3.40 GHz | |||
| Hyperthreading ? | Yes | Overclocking ? | No | |
| Core architecture | normal | |||
 Internal Graphics |
|
|---|---|
| GPU name | Intel Iris Plus Graphics 645 |
| GPU frequency | 0.30 GHz |
| GPU (Turbo) | 1.15 GHz |
| Generation | |
| DirectX Version | 12 |
| Execution units | 48 |
| Shader | 384 |
| Max. Memory | 32 GB |
| Max. displays | 3 |
| Technology | 14 nm |
| Release date | Q4/2017 |
 Hardware codec support
|
|
|---|---|
| H264 | Decode / Encode |
| H265 / HEVC (8 bit) | Decode / Encode |
| H265 / HEVC (10 bit) | Decode / Encode |
| VP8 | Decode / Encode |
| VP9 | Decode / Encode |
| AV1 | No |
| AV1 | No |
| AVC | Decode / Encode |
| JPEG | Decode / Encode |
 Memory & PCIe
| ||||
|---|---|---|---|---|
| Memory type | DDR4-2400 SO-DIMMLPDDR3-2133 | |||
| Max. Memory | ||||
| Memory channels | 2 | ECC | No | |
| PCIe version | 3.0 | PCIe lanes | 16 | |
 Thermal Management
| ||||
|---|---|---|---|---|
| TDP (PL1) | 15 W | TDP (PL2) | ||
| TDP up | -- | TDP down | -- | |
| Tjunction max | -- | |||
 Technical details
| |
|---|---|
| Instruction set (ISA) | x86-64 (64 bit) |
| Architecture | Coffee Lake U |
| L2-Cache | -- |
| L3-Cache | 8.00 MB |
| Technology | 14 nm |
| Virtualization | VT-x, VT-x EPT, VT-d |
| Release date | Q3/2019 |
| Socket | BGA 1528 |
Cinebench R20 is the successor of Cinebench R15 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
Cinebench R20 is the successor of Cinebench R15 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
The theoretical computing performance of the internal graphics unit of the processor with simple accuracy (32 bit) in GFLOPS. GFLOPS indicates how many billion floating point operations the iGPU can perform per second.
Cinebench R15 is the successor of Cinebench 11.5 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
Cinebench R15 is the successor of Cinebench 11.5 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
