AMD K6-2+ 475ACZM

The AMD K6-2+ 475ACZM is a single-core, single-threaded mobile processor built on the 180 nm process node, featuring a 64 KB L1 cache and 128 KB L2 cache. Its architecture is designated as K7 with the codename Sharptooth, and it operates at a base clock of 475.00 MHz with a 13W TDP for the Super Socket 7 platform. The data shows this is an end-of-life mobile part with a percentile score of 50, placing it exactly in the middle of the benchmark distribution for all CPUs tracked, though its average benchmark score is zero, indicating no direct performance measurements are available in the current dataset.

Benchmark Performance

The database provides no direct benchmark scores for the K6-2+ 475ACZM, as its benchmark array is empty and the average score is zero. This absence of data necessitates a careful interpretation of its percentile standing. A percentile rank of 50 means the processor sits at the median of all CPUs in the database, but without a numeric score, this can only be understood as a positional marker rather than a performance figure. The lack of nearest rivals further complicates direct performance analysis, as there are no comparative delta percentages available to quantify its standing against other specific processors.

In practical terms, the absence of benchmark results suggests this processor was either not subjected to the standard testing suite or its results were not recorded before its end-of-life status. The 475 MHz clock speed, combined with the single-core and single-thread configuration, indicates a baseline level of computational capability that would have been competitive in its 2000 release era but is now severely limited by modern standards. The 50th percentile placement implies it is neither a standout performer nor a bottom-tier part, but this is a relative rank based on the entire historical database, which includes many far more powerful and far weaker processors.

Power and Thermals

The K6-2+ 475ACZM is rated for a 13W TDP, which classifies it firmly in the low-power mobile segment. This thermal design power figure is modest even for its time, enabling passive or minimal active cooling solutions in thin and light laptops. The 13W envelope means a simple heatsink with a small fan would have been sufficient, and the processor would not have required the robust cooling assemblies seen on desktop counterparts. The 180 nm process node, while large by modern standards, was appropriate for the era and contributed to this manageable power draw.

For thermal management, the 13W TDP implies that system integrators could design around a compact thermal solution without significant engineering effort. The processor's mobile market segment further reinforces this, as battery life and heat dissipation were primary concerns for portable devices in 2000. The low TDP also suggests that sustained operation at the 475 MHz base clock would not push temperatures to problematic levels, even in poorly ventilated chassis. This makes the K6-2+ well-suited for fanless or near-silent designs, though the performance ceiling would be reached quickly under load.

Single-Thread vs Multi-Thread Behavior

With exactly one core and one thread, the K6-2+ 475ACZM exhibits no split between single-threaded and multi-threaded performance; all workloads execute on a single execution path. This means the processor's entire computational capability is dedicated to one thread at a time, making its 475 MHz clock speed the sole determinant of performance in every application. For single-threaded tasks, this is a straightforward situation: the processor can only process one instruction stream, and its speed is directly tied to the clock frequency and architectural efficiency of the Sharptooth core.

Real-world implications of this single-thread-only design are significant for multitasking and modern workloads. Any operating system or application that attempts to use multiple threads will see the processor time-slice between them, resulting in apparent slowdowns as context switching overhead accumulates. For period-appropriate software, this was acceptable, but the data shows no multi-thread advantage whatsoever, meaning the processor cannot benefit from parallel execution in any form. The 64 KB L1 and 128 KB L2 caches help mitigate latency but do not alter the fundamental single-thread nature of the part.

How It Compares

The nearest rivals list for the K6-2+ is empty, providing no direct comparative data against other specific processors. This absence means there are no deltaPct values or rival names to reference, making a quantitative comparison impossible within the available dataset. In the absence of direct rivals, the only comparative measure is the percentile rank of 50, which places it at the midpoint of all CPUs in the database. This suggests it performs better than half of all tracked processors and worse than the other half, though this is a historical comparison that includes both contemporary and modern parts.

Without rival scores, the K6-2+ can only be positioned qualitatively. Its 475 MHz clock and single-core design put it in the lower tier of processors from its era, likely competing with other late-1990s mobile chips of similar clock speeds. The 13W TDP and mobile segment indicate it was designed for battery-powered systems rather than desktop performance. The lack of any nearest rival data is itself notable, suggesting the database does not have sufficient comparable entries to establish a performance cluster around this processor.

Who Should Consider It

The K6-2+ 475ACZM is not suitable for gaming, content creation, or any modern office productivity workload that requires even basic multitasking capability. Its single-core, single-thread design means it will be overwhelmed by contemporary operating systems, web browsers, and productivity suites that rely on multiple threads for responsiveness. The 475 MHz clock speed, while reasonable for 2000, is orders of magnitude below what current software expects, making the processor effectively unusable for any task beyond the simplest single-threaded operations.

For collectors, retro-computing enthusiasts, or those maintaining period-specific hardware, the K6-2+ could serve as an authentic component for a Super Socket 7 system running era-appropriate software. Its 13W TDP makes it easy to cool, and the 128 KB L2 cache provides adequate memory buffering for workloads from its release period. The 50th percentile rank suggests it was an average performer in its day, neither a flagship nor an entry-level part. However, for any practical modern use, the data clearly shows this processor is outclassed by virtually every subsequent CPU, and its end-of-life status means no further software optimization or driver support is forthcoming.