Atom C3958

Details and Benchmarks for Intel Atom C3958

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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 C3958 based on all benchmark results gathered. Look at this like a meta score, you will find more specific workload ratings below.

4,266 Rank: 1567
Rank Name Score Visual
1563 Phenom 9650 4,269
+0.1%
1564 Pentium Gold 4415Y 4,268
+0%
1565 Xeon L5420 4,267
+0%
1566 Core i3-2350M 4,266
+0%
1567 Atom C3958 4,266
1568 Core 2 Duo T5750 4,266
+0%
1569 Core i3-530 4,266
+0%
1570 Athlon II X3 440 4,265
+-0%
1571 Pentium Silver N5000 4,264
+-0%
1572 Core i3-2330M 4,261
-0.1%

View full ranking →

Multicore Score

Multicore performance score for Atom C3958 based on multi-threaded benchmark results.

4,937 Rank: 689
Rank Name Score Visual
685 Core i7-4910MQ 4,942
+0.1%
686 Core i7-4770T 4,940
+0.1%
687 Core i7-4790 4,939
+0%
688 Core i5-10400H 4,938
+0%
689 Atom C3958 4,937
690 Core i7-9850H 4,936
+-0%
691 Core i5-1035G7 4,935
+-0%
692 Xeon E-2124G 4,934
-0.1%
693 Xeon E-2124 4,934
-0.1%
694 Core i3-7100T 4,934
-0.1%

View full ranking →

Singlecore Score

Single-core performance score for Atom C3958 based on single-threaded benchmark results.

3,819 Rank: 1873
Rank Name Score Visual
1869 Core 2 Duo T7200 3,830
+0.3%
1870 Celeron J3355 3,827
+0.2%
1871 Celeron 430 3,821
+0.1%
1872 Athlon 64 X2 4000+ 3,821
+0.1%
1873 Atom C3958 3,819
1874 Celeron 2955U 3,817
-0.1%
1875 Phenom X3 8750 3,817
-0.1%
1876 Turion II Neo N40L 3,816
-0.1%
1877 Pentium 987 3,814
-0.1%
1878 Core i3-2375M 3,814
-0.1%

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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 C3958 based on integer math, floating point math, and prime number computation benchmarks.

4,579 Rank: 1034
Rank Name Score Visual
1030 Xeon E5520 4,580
+0%
1031 A10 PRO-7800B 4,580
+0%
1032 Core i7-7660U 4,579
+0%
1033 Core i7-7560U 4,579
+0%
1034 Atom C3958 4,579
1035 A12-9800E 4,579
+0%
1036 A8-7600 4,579
+0%
1037 A10-7800 4,579
+0%
1038 Xeon E5450 4,579
+0%
1039 Pentium Gold G5420 4,578
+-0%

View full ranking →

Data Processing

Aggregated score for Atom C3958 based on data encryption, data compression, and string sorting benchmarks.

4,609 Rank: 878
Rank Name Score Visual
874 Xeon W3580 4,612
+0.1%
875 Xeon E5-2609 v4 4,611
+0%
876 Core i5-4590 4,611
+0%
877 Athlon Gold 7220U 4,610
+0%
878 Atom C3958 4,609
879 Xeon X5667 4,609
+0%
880 Xeon E3-1225 v6 4,608
+-0%
881 Athlon 240GE 4,607
+-0%
882 Xeon E3-1220 v5 4,607
+-0%
883 Core i5-6500 4,607
+-0%

View full ranking →

Physics & Compute

Aggregated score for Atom C3958 based on physics simulation and extended instruction set (SSE/AVX) benchmarks.

4,552 Rank: 1096
Rank Name Score Visual
1092 Athlon 200GE 4,553
+0%
1093 Pentium G4560 4,553
+0%
1094 Core i5-4300M 4,553
+0%
1095 Core i7-5500U 4,553
+0%
1096 Atom C3958 4,552
1097 Core i5-5287U 4,552
+0%
1098 Core i5-750 4,552
+0%
1099 Phenom II X6 1090T 4,552
+0%
1100 Core M3-7Y32 4,551
+-0%
1101 Athlon X4 845 4,551
+-0%

View full ranking →

Atom C3958 Details

Ranking #1566 of 2060 in overall performance, the Intel Atom C3958 presents a surprising case of modest single-core efficiency paired with strong multicore throughput for its class. While its single-core score of 3819 places it near the lower end of the ranking—slightly behind older dual-core Pentiums and Celerons—it's the multicore score of 4937 that sets it apart, positioning it just above several modern Intel Core i7 and i5 processors. This suggests the C3958 is not designed for high-frequency single-threaded tasks but rather for sustained parallel workloads, especially in environments where power efficiency and core count are prioritized.

Built on Intel’s Goldmont microarchitecture and fabricated on a 14 nm process, the Atom C3958 is a 16-core, 16-thread processor designed for embedded and network storage applications. It operates at a base frequency of 2.0 GHz with a locked clock multiplier, and it supports both DDR3L-1600 and DDR4-2400 memory, allowing for flexible memory configurations. The chip includes 0.875 MiB of L1 cache (0.375 MiB L1D and 0.5 MiB L1I), 16 MiB of L2 cache, and a shared 16 MiB L3 cache—typical for its segment but limited compared to mainstream desktop CPUs.

With a TDP of just 31 W and a compact FCBGA-1310 package, the Atom C3958 is optimized for low-power, high-density environments such as edge servers, storage appliances, and industrial control systems. Its integrated Intel QuickAssist Technology (QAT) and support for Intel VT-x, VT-d, and EPT indicate a focus on virtualization and data processing workloads. Despite lacking integrated graphics, the processor supports up to 20 PCIe 3.0 lanes and up to 16 SATA ports, making it suitable for high-throughput I/O applications.

In benchmark testing, the C3958 achieves a Passmark Number Crunching score of 4579, placing it above most mobile and low-power processors but well below mainstream desktop and server CPUs. Its data processing and physics compute scores of 4609 and 4552, respectively, reflect its strength in multithreaded workloads, particularly those that benefit from wide SIMD execution and memory bandwidth. However, the processor’s single-core performance remains a bottleneck, limiting its appeal in applications requiring low-latency responsiveness.

As of March 2026, the Atom C3958 is a niche solution, best suited for embedded systems where core count and power efficiency outweigh raw performance. While it may not compete with modern high-end processors, its balanced multicore performance and low power draw make it a viable option for network-attached storage, virtualization hosts, and industrial automation platforms.
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Intel Atom C3958

Main Specifications

Designer: Intel
Name: Atom C3958
Family: Atom
Series: 3000
Model Number: C3958
Cores: 16
Threads: 16
Base Frequency: 2000 MHz
Clock Multiplier: 20x (locked)
Microarchitecture: Goldmont
Core Name: Denverton
Core Family: 6
Core Model: 95
Package: FCBGA-1310
Target Segment: Embedded
Max CPUs: 1
TDP: 31 W
Release Price: $449.00

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 EIST VT-x VT-d EPT MPX SHA QAT
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