Core i5-8257U
Intel
PassMark
7,427
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.
Overview
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.
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.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar
FPS Benchmarks
Predicted performance for Core i5-8257U across popular games. Tested paired with RTX 4090 to isolate CPU performance.
Counter-Strike 2
Dead by Daylight
Deadlock
League of Legends
Left 4 Dead 2
Palworld
Path of Exile 2
Phasmophobia
Stardew Valley
Starfield
Technical Analysis
Detailed breakdown of Core i5-8257U specifications and capabilities.
Processing Power
The Core i5-8257U is a 4-core / 8-thread processor based on the Coffee Lake-U (2018−2019) architecture, manufactured on a 14 nm process node. It reaches a maximum boost clock of 3.9 GHz from a base frequency of 1.4 GHz— higher boost clocks directly translate to better single-threaded performance and responsiveness in gaming. It carries 6 MB of L3 cache, plus 1 MB of L2 cache and 256 kB of L1 cache per core. In the PassMark benchmark (a comprehensive multi-threaded test), it scores 7,427, placing it in the Entry Level performance tier as a Legacy generation product. Geekbench 6 single-core (the most relevant metric for gaming FPS) records 1,100, while multi-core reaches 4,000. Cinebench R23 multi-core (measuring sustained rendering workload performance) scores 4,017.
| Specification | Core i5-8257U |
|---|---|
| Cores / ThreadsPhysical/logical processing units | 4C / 8T |
| Max Boost ClockPeak single-core speed under boost | 3.9 GHz |
| Base ClockGuaranteed minimum operating frequency | 1.4 GHz |
| ArchitectureCPU microarchitecture design | Coffee Lake-U (2018−2019) |
| Process NodeFabrication technology — smaller = more efficient | 14 nm |
| L3 CacheShared cache — reduces memory latency for all cores | 6 MB |
| L2 CachePer-core fast cache for frequently accessed data | 1 MB |
| L1 CacheUltra-fast per-core cache | 256 kB |
| Bus SpeedData bus frequency | 4 GT/s |
| Max TemperatureMaximum safe operating temperature (Tjmax) | 100 °C |
| 64-bit Support | Yes |
| Windows 11 Compatible | Yes |
| PassMark ScoreOverall multi-threaded benchmark score | 7,427 |
| Cinebench R23 MultiSustained multi-core rendering performance | 4,017 |
| Geekbench 6 SingleSingle-core performance — most relevant for gaming | 1,100 |
| Geekbench 6 MultiMulti-core parallel workload performance | 4,000 |
Memory & Platform
The Core i5-8257U fits into the FCBGA1528 socket and supports PCIe 3.0 with 16 total PCIe lanes for expansion cards and storage. It supports DDR4 memory at speeds up to DDR4-2400 (faster RAM improves bandwidth-sensitive workloads), with a maximum capacity of 32 GB across 2 channels (dual-channel doubles bandwidth). Integrated graphics: Intel Iris Plus Graphics 645 — allows display output without a dedicated GPU, useful for troubleshooting and light tasks.
| Specification | Core i5-8257U |
|---|---|
| TypeDesktop or Laptop processor | Laptop |
| SeriesProduct family | Intel Core i5 |
| SocketMotherboard socket required | FCBGA1528 |
| PCIe GenerationPeripheral interconnect speed — affects GPU and SSD bandwidth | PCIe 3.0 |
| PCIe LanesTotal available lanes for GPUs, NVMe drives, and expansion | 16 |
| RAM TypeSupported memory standard | DDR4 |
| Max RAM SpeedMaximum officially supported memory frequency | DDR4-2400 |
| Max RAM CapacityMaximum installable memory | 32 GB |
| RAM ChannelsDual-channel doubles bandwidth vs single-channel | 2 |
| ECC SupportError-Correcting Code memory — prevents data corruption | No |
| Integrated GPUBuilt-in graphics processor | Intel Iris Plus Graphics 645 |
| Compatible ChipsetsMotherboard chipsets that support this CPU | 300 Series |
| Max CPUs in ConfigMulti-socket support for servers | 1 |
Advanced Features
The Core i5-8257U is primarily designed for Ultrabook. Virtualization: VT-x, VT-d — enables running virtual machines efficiently (important for development and server workloads).
| Specification | Core i5-8257U |
|---|---|
| Primary Use CaseIntended workload category | Ultrabook |
| OverclockingWhether CPU clock can be manually increased | 🔒 Locked |
| AVX-512Advanced vector instructions for AI/ML workloads | ❌ Not Supported |
| VirtualizationHardware-assisted virtualization technology | VT-x, VT-d |
Power & Cooling
The Core i5-8257U has a rated TDP (Thermal Design Power) of 15 Watt — this indicates the amount of heat generated under sustained load and determines what cooling solution is needed. No stock cooler is included — you will need to purchase an aftermarket cooler separately. Recommended cooling: Laptop Cooling.
| Specification | Core i5-8257U |
|---|---|
| TDPThermal Design Power — heat output under sustained workload | 15 Watt |
| Max TemperatureMaximum safe junction temperature (Tjmax) | 100 °C |
| Included CoolerStock cooler bundled in the box | None |
| Recommended CoolerSuggested aftermarket cooling solution | Laptop Cooling |
Value Analysis
Performance ranking position: #1522 out of all indexed processors.
| Specification | Core i5-8257U |
|---|---|
| Launch PriceOriginal retail price at launch | $149 |
| Performance RankPosition in overall performance ranking | #1522 |
| Release DateLaunch date | 10 July 2019 (6 years ago) |
| Release Year | 2019 |
| DesignerArchitecture designer (e.g. Intel, AMD) | Intel |
Specifications Reference
Raw spec sheet for quick lookup. The analysis cards above explain what these fields mean in practice.
4 categories
General Information
7 specs
General Information
7 specs
| Type | Laptop |
| Series | Intel Core i5 |
| Designer | Intel |
| Launch Price | $149 |
| Release Date | 10 July 2019 (6 years ago) |
| Architecture Codename | Coffee Lake-U (2018−2019) |
| Performance Ranking Position | 1522 |
Technical Specifications
12 specs
Technical Specifications
12 specs
| Cores | 4 |
| Threads | 8 |
| L1 Cache | 256 kB |
| L2 Cache | 1 MB |
| L3 Cache | 6 MB |
| Bus Speed | 4 GT/s |
| Max Frequency | 3.9 GHz |
| 64-Bit Support | + |
| Base Frequency | 1.4 GHz |
| Process Technology | 14 nm |
| Max Core Temperature | 100 °C |
| Windows 11 Compatible | + |
Compatibility
4 specs
Compatibility
4 specs
| Socket | FCBGA1528 |
| PCIe Generation | PCIe 3.0 |
| Power Consumption (TDP) | 15 Watt |
| Max Processors In Config | 1 |
Memory
4 specs
Memory
4 specs
| RAM Types | DDR4 |
| Memory Channels | 2 |
| Memory Bandwidth | 37.5 GB/s |
| Max Memory Capacity | 32 GB |
Similar Performance
Processors with benchmark scores closest to the current hardware, grouped by manufacturer.
Intel (8)
AMD (8)
Our Recommendation for Core i5-8257U
Suggested pairings based on performance balance
Minimum (Avoid Bottleneck) (12)
Recommended (Balanced) (12)
High-End (Max Performance) (12)
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