Atom C3858
Intel
PassMark
5,040
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 Atom C3858 is manufactured by Intel. It was released in 15 August 2017 (8 years ago). It is based on the Goldmont (2016−2017) architecture. It features 12 cores and 12 threads. Base frequency is 2 GHz, with boost up to 2 GHz. L3 cache: 12 MB. L2 cache: 12 MB. Built on 14 nm process technology. Socket: FCBGA1310. Thermal design power (TDP): 25 Watt. Memory support: DDR4: 2400. Passmark benchmark score: 5,040 points. Launch price was $332.
Value Upgrade Path
This is the official ChipVERSUS Value Rating, comparing raw performance (PassMark) per dollar. The Atom C3858 is positioned at rank #310 in our cost-efficiency ranking, representing a Lower cost-benefit for your build. 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 Atom C3858
FPS Benchmarks
Predicted performance for Atom C3858 across popular games. Tested paired with RTX 4090 to isolate CPU performance.
Path of Exile 2
Counter-Strike 2
League of Legends
Valorant
Technical Analysis
Detailed breakdown of Atom C3858 specifications and capabilities.
Processing Power
The Atom C3858 is a 12-core / 12-thread processor based on the Goldmont (2016−2017) architecture, manufactured on a 14 nm process node. It reaches a maximum boost clock of 2 GHz from a base frequency of 2 GHz— higher boost clocks directly translate to better single-threaded performance and responsiveness in gaming. It carries 12 MB of L3 cache, plus 12 MB of L2 cache and 672 kB of L1 cache per core. In the PassMark benchmark (a comprehensive multi-threaded test), it scores 5,040, placing it in the Entry Level performance tier as a Legacy generation product.
| Specification | Atom C3858 |
|---|---|
| Cores / ThreadsPhysical/logical processing units | 12C / 12T |
| Max Boost ClockPeak single-core speed under boost | 2 GHz |
| Base ClockGuaranteed minimum operating frequency | 2 GHz |
| ArchitectureCPU microarchitecture design | Goldmont (2016−2017) |
| Process NodeFabrication technology — smaller = more efficient | 14 nm |
| L3 CacheShared cache — reduces memory latency for all cores | 12 MB |
| L2 CachePer-core fast cache for frequently accessed data | 12 MB |
| L1 CacheUltra-fast per-core cache | 672 kB |
| Max TemperatureMaximum safe operating temperature (Tjmax) | 83 °C |
| 64-bit Support | Yes |
| Windows 11 Compatible | No |
| PassMark ScoreOverall multi-threaded benchmark score | 5,040 |
Memory & Platform
The Atom C3858 fits into the FCBGA1310 socket and supports PCIe 3.0 with 12 total PCIe lanes for expansion cards and storage. It supports DDR4: 2400 memory at speeds up to DDR4-2400 (faster RAM improves bandwidth-sensitive workloads), with a maximum capacity of 256 GB across 2 channels (dual-channel doubles bandwidth). It supports ECC memory, providing error-correcting capabilities — essential for mission-critical workloads and servers.
| Specification | Atom C3858 |
|---|---|
| TypeDesktop or Laptop processor | server |
| SeriesProduct family | Intel Atom |
| SocketMotherboard socket required | FCBGA1310 |
| PCIe GenerationPeripheral interconnect speed — affects GPU and SSD bandwidth | PCIe 3.0 |
| PCIe LanesTotal available lanes for GPUs, NVMe drives, and expansion | 12 |
| RAM TypeSupported memory standard | DDR4: 2400 |
| Max RAM SpeedMaximum officially supported memory frequency | DDR4-2400 |
| Max RAM CapacityMaximum installable memory | 256 GB |
| RAM ChannelsDual-channel doubles bandwidth vs single-channel | 2 |
| ECC SupportError-Correcting Code memory — prevents data corruption | Yes |
| Integrated GPUBuilt-in graphics processor | No |
| Compatible ChipsetsMotherboard chipsets that support this CPU | Intel FCBGA1310 |
| Max CPUs in ConfigMulti-socket support for servers | 1 (Uniprocessor) |
Power & Cooling
The Atom C3858 has a rated TDP (Thermal Design Power) of 25 Watt — this indicates the amount of heat generated under sustained load and determines what cooling solution is needed.
| Specification | Atom C3858 |
|---|---|
| TDPThermal Design Power — heat output under sustained workload | 25 Watt |
| Max TemperatureMaximum safe junction temperature (Tjmax) | 83 °C |
Value Analysis
It currently holds Rank #310 in the overall cost-benefit ranking — this ranking factors in performance-per-dollar relative to all available processors. Performance ranking position: #1871 out of all indexed processors.
| Specification | Atom C3858 |
|---|---|
| Launch PriceOriginal retail price at launch | $332 |
| Cost-Benefit RankPosition in overall value ranking | #310 |
| Performance RankPosition in overall performance ranking | #1871 |
| Release DateLaunch date | 15 August 2017 (8 years ago) |
| Release Year | 2017 |
| DesignerArchitecture designer (e.g. Intel, AMD) | Intel |
Similar Performance
Processors with benchmark scores closest to the current hardware, grouped by manufacturer.
Intel (12)
AMD (12)
Our Recommendation for Atom C3858
Suggested pairings based on performance balance
Minimum (Avoid Bottleneck) (12)
Recommended (Balanced) (12)
High-End (Max Performance) (12)
Popular Comparisons
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