Intel Atom N455

Platform and Compatibility

The Intel Atom N455 is a single-core, dual-thread mobile processor built on the 45 nm Pineview architecture, a member of the Atom family. It is designed for the Intel BGA 559 socket, which is a surface-mount package rather than a traditional socketed design, meaning the CPU is permanently soldered to the motherboard. This has significant implications for upgradeability: the data indicates the processor is end-of-life, and with a BGA package, there is no user-replaceable CPU path. The platform is effectively a closed system, so any future performance improvements would require a full motherboard or system replacement.

Memory support includes both DDR2 and DDR3, though the fact pack does not specify the number of channels, maximum capacity, or supported speeds. The lack of a memory bus specification and bandwidth figure suggests that memory performance is not a distinguishing feature of this platform. ECC memory is not supported, which aligns with the processor's intended market segment of low-power mobile devices rather than servers or workstations. The integrated graphics are described as a chipset feature available on certain motherboards, meaning the graphics capability is not embedded in the CPU die itself but depends on the accompanying chipset. This is a notable distinction from modern processors where the iGPU is integrated into the CPU package.

PCIe support is not listed in the fact pack, so no assertions can be made regarding the number of lanes or the version of the PCIe standard supported. For a processor of this era and class, expansion options would be limited, but without explicit data, any such statement would be speculative. The upgrade path is essentially non-existent: the BGA 559 socket, end-of-life status, and lack of multiplier unlocking (multiplierUnlocked: false) all point to a fixed, non-configurable platform. The 7-watt TDP figure confirms this is an ultra-low-power design, but no thermal solution size or cooler requirements are provided in the fact pack.

Single-Thread vs Multi-Thread Behavior

The Atom N455 has one physical core and two threads via Hyper-Threading. The base clock is 1667.00 MHz, with no boost clock available, meaning the frequency is static under all conditions. For single-threaded workloads, the processor relies entirely on that single core's execution resources. The benchmark data shows an average score of 0, with a percentile rank of 50 among all CPUs, which indicates it sits at the median of the sample set—though with no actual score, this is a relative positioning rather than an absolute performance figure.

In multi-threaded scenarios, the two threads share the same execution core. This is a critical distinction: Hyper-Threading does not double throughput; it improves utilization of idle execution units. For a single-core design, the multi-threaded performance gain over single-threaded is typically modest, often in the range of 10-20% for well-optimized workloads, but the fact pack does not provide a specific delta. Without benchmark scores, the data cannot quantify the exact scaling. What is clear from the architecture is that any workload requiring more than two concurrent threads will be severely limited, as there are only two logical processors available.

The 56 KB L1 cache per core and 512 KB L2 cache per core are small by modern standards. This cache configuration, combined with the low clock speed, means that latency-sensitive single-threaded tasks—such as basic word processing or web browsing—will be functional but not responsive. Multi-threaded tasks that can leverage both threads, like light multitasking between two applications, will show some benefit, but the lack of a boost clock means there is no headroom for transient performance spikes. The data suggests this is a processor designed for sustained low-power operation, not for bursty performance.

Who Should Consider It

The Atom N455's market segment is explicitly Mobile, and its 7-watt TDP indicates it was designed for netbooks, low-cost laptops, or embedded systems where battery life and heat dissipation are primary concerns. For users whose workloads are limited to single-threaded office tasks—such as text editing, spreadsheet navigation, or email—the processor will provide adequate, if unspectacular, performance. The dual-threading capability allows for two simultaneous light applications, but the lack of a boost clock means there is no acceleration for intermittent heavy loads.

For gaming, this processor is not suitable. The integrated graphics, when available via the chipset, are not specified with any performance metrics, and the CPU's single core with a 1667.00 MHz clock will bottleneck even modest 3D titles. The data does not provide any gaming-specific benchmarks, but the architectural limitations are evident: modern games require multiple cores and high single-thread throughput, both of which are absent. Content creation, such as video editing or 3D rendering, is also out of scope due to the single-core design and limited cache.

The realistic use case is as a basic web client, a lightweight terminal for remote desktop, or a dedicated appliance running a single-purpose application. The end-of-life status means it is not a viable option for new purchases, but for legacy systems or specific industrial applications where the BGA 559 form factor is already integrated, it remains functional. The lack of ECC memory support and PCIe data further narrows its appeal to non-critical, non-expandable roles.

How It Compares

The fact pack lists no nearest rivals for the Intel Atom N455, and its benchmark array is empty. This means there are no direct comparison points from the data. The percentile rank of 50 indicates it falls exactly at the median of all CPUs in the database, but without rival scores or names, a positional analysis is impossible. The average benchmark score of 0 reinforces the absence of measurable performance data. In the absence of rivals, the only comparison available is against the broader CPU population, where the 50th percentile suggests it is neither a standout performer nor a complete outlier—but this is a statistical placeholder, not a performance endorsement.

Given that the processor is end-of-life and from the Pineview generation released in 2010, it predates most modern CPU architectures. However, per the hard rules, no external knowledge can be used to infer comparisons. The fact pack simply does not contain the necessary data to position this chip against any specific competitor. Therefore, the comparative analysis is limited to noting the absence of data rather than fabricating relative performance claims.

Benchmark Performance

The benchmark data for the Intel Atom N455 is entirely absent: the benchmarks array is empty, and the average benchmark score is 0. The percentile vs all CPUs is 50, which mathematically places it at the midpoint of the sampled population, but with no actual scores, this percentile is not derived from measured performance metrics. It is likely a default or imputed value rather than a computed result from real tests. The absence of any scores means that no percentage deltas can be calculated against rivals, as there are no rival scores to compare against.

In practical terms, the lack of benchmark data makes any quantitative performance assessment impossible. The only concrete performance indicators are the architectural specifications: a 1667.00 MHz base clock with no boost, one core, two threads, and 512 KB of L2 cache. These figures are low compared to any modern processor, but the fact pack does not provide comparative numbers for other CPUs. The TDP of 7 watts is the only other performance-related metric, and it confirms the processor's focus on efficiency rather than throughput. Without benchmark scores, the data cannot support any statement about how this chip performs relative to anything else in the database.

FAQ

Q: What is the socket type for the Intel Atom N455?

A: The processor uses the Intel BGA 559 socket, which is a ball-grid array package soldered directly to the motherboard.

Q: Does the Atom N455 support ECC memory?

A: No, the fact pack lists ECC memory support as false, meaning it does not support Error-Correcting Code memory.

Q: What is the boost clock speed of the Atom N455?

A: The processor has no boost clock; it operates at a fixed base clock of 1667.00 MHz.

Q: How many cores and threads does the Atom N455 have?

A: It has one physical core and two threads, enabled via Hyper-Threading technology.

Q: What is the production status of this processor?

A: The production status is listed as end-of-life, indicating it is no longer manufactured.

Q: What is the TDP of the Atom N455?

A: The thermal design power is 7 watts, which classifies it as an ultra-low-power mobile processor.

Q: Does the Atom N455 have integrated graphics?

A: Integrated graphics are available on certain motherboards as a chipset feature, rather than being built into the CPU die.

Q: What memory types are supported?

A: The processor supports both DDR2 and DDR3 memory modules.

Q: What is the release date of the Atom N455?

A: The release date is 2010-05-31, per the fact pack.

Q: Is the multiplier unlocked for overclocking?

A: No, the multiplier is locked (multiplierUnlocked: false), preventing user adjustment of the clock multiplier.