Atom N455

Details and Benchmarks for Intel Atom N455

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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 N455 based on all benchmark results gathered. Look at this like a meta score, you will find more specific workload ratings below.

3,956 Rank: 1926
Rank Name Score Visual
1922 E2-6110 3,960
+0.1%
1923 Atom N450 3,959
+0.1%
1924 Pentium SU4100 3,957
+0%
1925 Celeron 807UE 3,956
+0%
1926 Atom N455 3,956
1927 Celeron N3060 3,953
-0.1%
1928 Celeron 807 3,952
-0.1%
1929 Phenom X3 8450 3,950
-0.2%
1930 Core i3-2365M 3,944
-0.3%
1931 Sempron 3850 3,943
-0.3%

View full ranking →

Multicore Score

Multicore performance score for Atom N455 based on multi-threaded benchmark results.

4,231 Rank: 1959
Rank Name Score Visual
1955 E2-1800 4,232
+0%
1956 E-450 4,231
+0%
1957 E-350 4,231
+0%
1958 Atom N450 4,231
+0%
1959 Atom N455 4,231
1960 A6-9500E 4,230
+-0%
1961 Core 2 Duo P7450 4,230
+-0%
1962 Intel Core i5-430UM 4,229
+-0%
1963 Core i3-4005U 4,229
+-0%
1964 Core 2 Duo T6670 4,229
+-0%

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Singlecore Score

Single-core performance score for Atom N455 based on single-threaded benchmark results.

3,772 Rank: 1911
Rank Name Score Visual
1907 E2-7110 3,776
+0.1%
1908 Intel Pentium P6000 3,774
+0.1%
1909 E2-9000e 3,774
+0.1%
1910 Athlon 64 3500+ 3,773
+0%
1911 Atom N455 3,772
1912 Celeron N2840 3,766
-0.2%
1913 Phenom X4 9650 3,766
-0.2%
1914 A6-3410MX 3,765
-0.2%
1915 Celeron N3450 3,761
-0.3%
1916 A4-6210 3,760
-0.3%

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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 N455 based on integer math, floating point math, and prime number computation benchmarks.

4,452 Rank: 1764
Rank Name Score Visual
1760 Athlon 64 3200+ 4,455
+0.1%
1761 Sempron 2500+ 4,454
+0%
1762 Atom D2500 4,453
+0%
1763 Atom N450 4,452
+0%
1764 Atom N455 4,452
1765 Atom E3815 4,452
+0%
1766 Atom D425 4,451
+-0%
1767 Sempron LE-1250 4,431
-0.5%
1768 Atom 230 4,429
-0.5%
1769 Atom N280 4,426
-0.6%

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Data Processing

Aggregated score for Atom N455 based on data encryption, data compression, and string sorting benchmarks.

4,418 Rank: 1764
Rank Name Score Visual
1760 Pentium SU2700 4,419
+0%
1761 Sempron 2500+ 4,419
+0%
1762 Celeron 807UE 4,418
+0%
1763 Atom N450 4,418
+0%
1764 Atom N455 4,418
1765 Sempron 3200+ 4,418
+0%
1766 Atom N280 4,417
+-0%
1767 Atom E3815 4,417
+-0%
1768 Atom D425 4,417
+-0%
1769 Atom N270 4,415
-0.1%

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Physics & Compute

Aggregated score for Atom N455 based on physics simulation and extended instruction set (SSE/AVX) benchmarks.

4,433 Rank: 1762
Rank Name Score Visual
1758 Athlon 64 3200+ 4,435
+0%
1759 C-50 4,434
+0%
1760 Athlon 64 4000+ 4,433
+0%
1761 Atom N450 4,433
+0%
1762 Atom N455 4,433
1763 Sempron LE-1250 4,433
+0%
1764 Atom N280 4,432
+-0%
1765 Atom D425 4,432
+-0%
1766 Atom E3815 4,431
+-0%
1767 Atom Z520 4,430
-0.1%

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Atom N455 Details

The Intel Atom N455, launched in June 2010, represents an early iteration of Intel's low-power mobile processor lineup, designed for ultra-compact and energy-efficient devices such as netbooks and entry-level laptops. Built on a 45 nm process and based on the Pineview microarchitecture, the N455 is a single-core processor with a base clock of 1.66 GHz, capable of reaching up to 1.86 GHz in turbo mode. Despite its age, the chip remains notable for its extremely low thermal design power (TDP) of just 6.5 watts, making it ideal for systems where power efficiency and passive cooling are priorities.

The N455 leverages Intel's Hyper-Threading technology to support two threads, effectively doubling its concurrency at the software level. It features 512 KB of L2 cache and supports DDR2 and DDR3 memory types, with a maximum capacity of 2 GB and a memory bandwidth of 6.4 GB/s. The integrated GMA 3150 graphics engine operates at up to 756 MHz and supports up to two displays, enabling basic multimedia playback and light graphical tasks. While the GPU lacks modern features like DirectX 12 or hardware video decoding, it remains sufficient for office applications and web browsing.

In terms of performance, the Atom N455 holds a PassMark Overall Score of 3956, ranking it #1925 out of 2060 processors in the database. Its Singlecore Score of 3772 places it just above the lower tier of older CPUs, while its Multicore Score of 4231 indicates limited scalability due to its single-core design. When compared to contemporaries like the Atom N450 and Celeron N2840, the N455 holds a modest lead in performance, though it trails significantly behind modern processors. In the broader context of the top 50 CPUs, the N455 falls far short of high-end offerings such as the Ryzen Threadripper PRO 9995WX or Core Ultra 9 285K, which achieve over 9,000 in overall score.

The N455 supports a wide array of Intel technologies, including AES-NI, VT-x virtualization, and EIST for power management, though it lacks support for newer instruction sets like SSE4.2 or AVX2. Its socket is FC-BGA559, and it is packaged in a BGA format, meaning it is not user-upgradable. Given its release over a decade ago, the N455 is now obsolete for modern computing needs but remains relevant in niche applications such as embedded systems, thin clients, or legacy hardware maintenance.

As of March 2026, the Atom N455 serves as a reminder of Intel’s early efforts in creating low-power mobile computing solutions. While it offers excellent energy efficiency and basic functionality, its performance is no longer competitive in any mainstream use case. It is best suited for environments where power consumption and cost are more critical than processing power, such as in older educational devices or industrial automation systems.
Frequently Compared

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Intel Atom N455

Main Specifications

Designer: Intel
Name: Atom N455
Model Number: N455
Cores: 1
Threads: 2
Base Frequency: 1660 MHz
Clock Multiplier: 14x (locked)
Core Name: Pineview
Socket: FCBGA559
Package: FC-BGA8
Target Segment: Mobile
Max CPUs: 1
TDP: 6.5 W

Cache Specifications

L1 Cache: 62.464 KiB
L2 Cache: 0.488 MiB

Memory Specifications

Supported Memory Type: DDR2/3
Memory Channels: 1
Maximum Memory: 0 GB
Maximum Bandwidth: 6.4 GB/s
ECC Support: No

PCI-Express Specifications

PCIe Revision: 2.0
PCIe Lanes: 4
PCIe Configuration: 1x4/2x2/1x2 + 2x1/4x1

Integrated Graphics

GPU: Integrated
GPU Designer: Intel
GPU Max Frequency: 756 MHz

Physical Specifications

Process: 45 nm
Die Area: 66 mm²
Transistor Count: 0.00 billion
Manufacturer: Intel
Word Size: 64-bit

CPU Features

MMX EMMX SSE SSE2 SSE3 SSSE3 SSE4.1 SSE4.2 AVX2 AES x86-64 HT EIST TXT vPro VT-x VT-d EPT Secure Key SMEP SIPP IPT TSX Flex Memory FMA 3DNow! E3DNow!
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