IntelOutdated for demanding workloadsServer

Intel Atom C3858 @ 2.00GHz

Explore Intel Atom C3858 @ 2.00GHz technical reviews, specifications and benchmark results, with practical context for server workloads and platform planning.

Last updated: 2026-10-20
3.3/ 10
Technical rating

Outdated for demanding workloads

Intel Atom C3858 @ 2.00GHz is a Server processor with 12 cores and 12 threads. Its base clock is 2 GHz. It records a PassMark CPU Mark of 5040 and a single-thread rating of 702. Its stated TDP is 25 W.

CPU Mark5,040
3 samples
Single Thread702
Overall rank#2,584
of 6,054
Reference price$332.00

Technical assessment

A summary based on specifications and results.

Outdated for demanding workloads
3.3Outdated for demanding workloads

Intel Atom C3858 @ 2.00GHz is a Server processor with 12 cores and 12 threads. Its base clock is 2 GHz. It records a PassMark CPU Mark of 5040 and a single-thread rating of 702. Its stated TDP is 25 W.

Specification context

What do these specifications mean in practice?

The Intel Atom C3858 @ 2.00GHz is a Server released in 2018. Recorded specifications include 12 cores and 12 threads, a 25 W reference TDP, a 5,040 CPU Mark. Use these figures to understand its position, then compare the results with your software and the complete platform.

Reading guide

Read the performance results

The 5,040 CPU Mark is a broad overall-performance measure, while the 702 single-thread result adds context for less-parallel work. Compare the nearby alternatives on this page and do not treat one score as a verdict for every application.

Platform and compatibility

It uses socket FCBGA1310. A matching socket is only the first check; confirm the official motherboard CPU-support list, BIOS revision and board power limits.

Memory and power

The 25 W TDP helps size the cooling class, but it is not the same as peak wall-power consumption.

FAQ

Common processor questions

What are the key Intel Atom C3858 @ 2.00GHz specifications?

The main recorded details are 12 cores and 12 threads, a 25 W reference TDP, a 5,040 CPU Mark. The tables on this page show socket, memory, cache and graphics data when available.

Is the Intel Atom C3858 @ 2.00GHz good for gaming?

The product name or CPU Mark alone cannot answer that. Check single-thread performance, core count, the target graphics card, gaming resolution and results from the games you play.

Which motherboards support the Intel Atom C3858 @ 2.00GHz?

Start with FCBGA1310 motherboards, then confirm the official CPU-support list and required BIOS revision for the exact board before buying.

How much power does the Intel Atom C3858 @ 2.00GHz use?

The recorded reference TDP is 25 W. Real consumption can be lower or higher depending on power limits, motherboard, workload and cooling.

This guidance interprets recorded specifications and results; it does not claim hands-on device testing. Results can vary with motherboard, power, memory and cooling.

Multi-axis comparison

How does this processor compare?

A direct comparison with nearby processors from the same brand and a similar core count.

5 CPU

Overall and multi-core performance

A higher CPU Mark indicates stronger overall performance.

01Intel Xeon X5677 @ 3.47GHzIntel5,064 points
02Intel Atom C3858 @ 2.00GHzThis CPU5,040 points
03Intel Xeon E3-1235 @ 3.20GHzIntel5,037 points
04Intel Xeon X5672 @ 3.20GHzIntel5,036 points
05Intel Xeon E5-2420 @ 1.90GHzIntel5,026 points

Single-thread performance

Measures speed in tasks that depend on one CPU thread.

01Intel Xeon X5677 @ 3.47GHzIntel1,611 points
02Intel Xeon E3-1235 @ 3.20GHzIntel1,600 points
03Intel Xeon X5672 @ 3.20GHzIntel1,552 points
04Intel Xeon E5-2420 @ 1.90GHzIntel1,079 points
05Intel Atom C3858 @ 2.00GHzThis CPU702 points

Performance per watt

Estimated as CPU Mark divided by TDP.

01Intel Atom C3858 @ 2.00GHzThis CPU201.6 Mark/W
03Intel Xeon X5672 @ 3.20GHzIntel53.0 Mark/W
05Intel Xeon X5677 @ 3.47GHzIntel39.0 Mark/W

Bars are relative to the processors shown here, not a global ranking of every CPU.

Detailed benchmark results

Snapshot from 2026-10-20

Data CompressionKBytes/Sec
106,722.00
Data EncryptionMBytes/Sec
4,724.00
Extended InstructionsMillion Matrices/Sec
2,351.00
Find Prime NumbersMillion Primes/Sec
17.00
Floating Point MathMOps/Sec
8,844.00
Integer MathMOps/Sec
32,465.00
PhysicsFrames/Sec
416.00
Random String SortingThousand Strings/Sec
14,320.00

Core specifications

BrandIntel
CategoryServer
Release year2018
SocketFCBGA1310
Cores / threads12 / 12
Base clock2.00 GHz
Max turbo—
TDP25 W
Integrated graphics—

Memory support

—
Memory type—
Official speed—
Maximum capacity—

Cache hierarchy

L1I16 x 32 KB
L1D16 x 24 KB
L24 x 2048 KB