Atom C3955

Details and Benchmarks for Intel Atom C3955

Sysbuilds Alpha Stage!

Please take all results with a big grain of salt. Sysbuilds is in alpha stage at the moment which can lead to wrong data, strange counting errors, silly results and more. This site is under active development.

Benchmark Results

Combined benchmark scores based on multiple data points, giving a quick overview of this processor's performance.

Overall Score

Overall score for Atom C3955 based on all benchmark results gathered. Look at this like a meta score, you will find more specific workload ratings below.

4,273 Rank: 1559
Rank Name Score Visual
1555 Phenom II X4 B95 4,276
+0.1%
1556 A10-5757M 4,275
+0%
1557 Pentium G640T 4,274
+0%
1558 Core i3-2100T 4,274
+0%
1559 Atom C3955 4,273
1560 Xeon E3110 4,272
+-0%
1561 Core 2 Duo T7250 4,271
+-0%
1562 Phenom II X3 B75 4,270
-0.1%
1563 Phenom 9650 4,269
-0.1%
1564 Pentium Gold 4415Y 4,268
-0.1%

View full ranking →

Multicore Score

Multicore performance score for Atom C3955 based on multi-threaded benchmark results.

4,795 Rank: 846
Rank Name Score Visual
842 Core i7-8559U 4,800
+0.1%
843 Core i7-6700TE 4,800
+0.1%
844 Core i7-8665U 4,799
+0.1%
845 Core i7 965 4,796
+0%
846 Atom C3955 4,795
847 Xeon E3-1271 v3 4,795
+0%
848 Core i7-4702HQ 4,795
+0%
849 Intel Core i3-390M 4,793
+-0%
850 FX-8370E 4,793
+-0%
851 Pentium Gold G4560 4,792
-0.1%

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Singlecore Score

Single-core performance score for Atom C3955 based on single-threaded benchmark results.

3,925 Rank: 1820
Rank Name Score Visual
1816 A8-7100 3,935
+0.3%
1817 Pentium P6000 3,935
+0.3%
1818 Athlon 64 X2 5200+ 3,935
+0.3%
1819 Turion II Mobile M500 3,929
+0.1%
1820 Atom C3955 3,925
1821 Turion II Neo N54L 3,925
+0%
1822 A10-7300 3,918
-0.2%
1823 Atom C3758 3,917
-0.2%
1824 A4-3320M 3,917
-0.2%
1825 Core 2 Duo T5850 3,910
-0.4%

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Workload Scores

Performance scores grouped by workload type, normalized and aggregated from multiple raw benchmark results.

Number Crunching

Aggregated score for Atom C3955 based on integer math, floating point math, and prime number computation benchmarks.

-- Rank: --

Number Crunching score not yet available.

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Data Processing

Aggregated score for Atom C3955 based on data encryption, data compression, and string sorting benchmarks.

-- Rank: --

Data Processing score not yet available.

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Physics & Compute

Aggregated score for Atom C3955 based on physics simulation and extended instruction set (SSE/AVX) benchmarks.

-- Rank: --

Physics & Compute score not yet available.

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Atom C3955 Details

For users requiring high core counts in energy-efficient embedded systems, the Intel Atom C3955 presents a compelling option, though its performance reflects its age and niche positioning. Released in 2016, the processor is now over seven years old, placing it in the category of legacy hardware. Despite its outdated status, the Atom C3955 is engineered for server and cloud storage applications, where its 16 cores and 16 threads deliver significant multithreaded throughput for workloads that benefit from parallel processing. Built on Intel's 14 nm process and based on the Goldmont microarchitecture, the C3955 operates at a base frequency of 2.1 GHz with a turbo frequency of 2.4 GHz, supported by a 32 W TDP that ensures efficient power consumption in compact, low-power environments. The chip features 0.875 MiB of L1 cache (0.375 MiB for L1D and 0.5 MiB for L1I), 16 MiB of L2 cache, and a shared 16 MiB L3 cache, while supporting up to 262 GB of DDR3L-1600 and DDR4-2400 memory across two channels, with a maximum memory bandwidth of 35.76 GiB/s. The processor is packaged in a FCBGA-1310 socket and supports PCIe 3.0 with up to 16 lanes, making it suitable for high-throughput storage and networking tasks.

The Atom C3955's benchmark performance places it in the mid-to-lower tier of modern processors. It achieves an overall score of 4,273, ranking #1,559 out of 2,060 CPUs, with a single-core score of 3,925 (#1,820) and a multicore score of 4,795 (#846). While its multicore performance is relatively strong compared to other processors in its age bracket, its single-core performance is notably weaker, highlighting a design that prioritizes throughput over raw speed. The processor competes with older Intel Core i3 and Pentium models, as well as AMD's low-end offerings, but falls significantly short of contemporary high-performance CPUs. Its closest competitors in the multicore rankings include the Core i7-8665U and Core i7-8559U, both of which offer higher clock speeds and more advanced architectures. In the broader context of top-tier processors, the C3955 lags far behind leaders like the Ryzen Threadripper PRO 9995WX and Core Ultra 9 285K, which achieve scores over 9,000 and 8,000, respectively.

Despite its age, the Atom C3955 retains relevance in embedded and server environments due to its robust feature set, including support for Intel VT-x, VT-d, and EPT for virtualization, as well as AES-NI, SHA extensions, and Intel Enhanced SpeedStep technology. It also supports ECC memory, making it suitable for mission-critical applications where data integrity is paramount. However, its lack of integrated graphics and limited single-core performance restrict its use to server and cloud storage applications rather than general computing or gaming. As of March 2026, the processor remains a viable option for legacy systems and embedded workloads where power efficiency and core count are more critical than peak performance.
Frequently Compared

Intel Core i3-6320 22 views

Intel Xeon Silver 4116 21 views

AMD Ryzen 3 PRO 2200GE 20 views

Intel Core i7-6920HQ 20 views

Intel Xeon Silver 4116T 20 views

Intel Core i7-7820EQ 19 views

Intel Core i7-7700 19 views

Intel Xeon Silver 4214 19 views

AMD Ryzen 9 PRO 3900 17 views

AMD Ryzen 5 PRO 3500U 16 views

Intel Atom C3955

Main Specifications

Designer: Intel
Name: Atom C3955
Family: Atom
Series: 3000
Model Number: C3955
Cores: 16
Threads: 16
Base Frequency: 2100 MHz
Turbo Frequency (1 core): 2400 MHz
Clock Multiplier: 21x (locked)
Microarchitecture: Goldmont
Core Name: Denverton
Core Family: 6
Core Model: 95
Package: FCBGA-1310
Target Segment: Embedded
Max CPUs: 1
TDP: 32 W
Release Price: $434.00

Cache Specifications

L1 Cache: 896 KiB
L1 Instruction Cache: 512 KiB (8-way set associative)
L1 Data Cache: 384 KiB (6-way set associative)
L2 Cache: 16 MiB (16-way set associative)

Memory Specifications

Supported Memory Type: DDR3L-1600 and DDR4-2400
Memory Channels: 2
Maximum Memory: 256 GB
Maximum Bandwidth: 35.76 GB/s
ECC Support: Yes

PCI-Express Specifications

PCIe Revision: 3.0
PCIe Lanes: 16
PCIe Configuration: x8, x4, x2, x1

Physical Specifications

Process: 14 nm
Manufacturer: Intel
Technology: CMOS
Word Size: 64-bit
ISA: x86-64 (x86)

CPU Features

MMX EMMX SSE SSE2 SSE3 SSSE3 SSE4.1 SSE4.2 AES RdRand x86-16 x86-32 x86-64 Real Protected SMM FPU NX TBT 2.0 EIST VT-x VT-d EPT MPX SHA
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