Intel Atom E660

The Intel Atom E660 is a single-core, dual-threaded mobile processor from Intel’s Atom family, built on the 45 nm process node under the Tunnel Creek codename. Released on September 13, 2010, it is now end-of-life. The database lists no benchmark scores for this part: the benchmarks array is empty, the average benchmark score is 0, and the percentile rank against all CPUs is 50. That percentile places it at the exact midpoint of the database’s historical distribution, though without any measured scores, this rank is a placeholder rather than a performance verdict.

Benchmark Performance

The benchmark data for the Atom E660 is entirely absent. No entries exist in the benchmarks array, and the average benchmark score is 0. The percentile rank of 50 is the only positional metric available, but it cannot be interpreted as a meaningful performance indicator because it is not derived from any actual test results. In the absence of scores, the only performance-relevant specification is the fixed 1300 MHz base clock. There is no boost clock, so the processor runs at a constant frequency under all conditions. This means that single-threaded workloads are entirely dependent on that 1300 MHz clock, while multi-threaded workloads can leverage the two threads to extract some additional throughput from the single core.

Because no rival scores are listed, there are no deltaPct values to report. The database cannot provide any quantitative comparison against other processors. The percentile rank of 50, while neutral, suggests that if the processor were measured, it would fall somewhere in the middle of the database’s historical CPU population, but this is speculative. The 0 average score is a placeholder, not a result. The only concrete performance fact is the fixed clock speed, which is low by modern standards. This places the Atom E660 in the entry-level tier, suitable for basic tasks such as light web browsing, document editing, or embedded control, though the database does not provide any workload-specific data to confirm that.

Platform and Compatibility

The Atom E660 uses the Intel BGA 676 socket, a ball-grid array package that is soldered directly to the motherboard. This eliminates any possibility of CPU upgrades; the processor is permanently attached. The memory support is limited to DDR2, an older memory generation, and ECC memory is not supported. The integrated graphics are not part of the CPU die but are a chipset feature, available only on certain motherboards. This means that the graphics capability is determined by the motherboard chipset, not the processor itself. The PCIe information is not provided in the database, so expansion capabilities cannot be assessed. The memory bus and bandwidth are also unspecified.

The processor is designed for the mobile market segment, and its production status is end-of-life. The part number is SLH54. The die is small, measuring 26 mm², and contains 47 million transistors. This small die size and low transistor count are consistent with a simple, low-cost design. The lack of a PCIe listing and the absence of memory bandwidth data make it difficult to evaluate the platform’s overall connectivity. However, the socket type and memory support indicate a fixed, non-upgradable platform. The end-of-life status further limits any upgrade path, as the processor is no longer manufactured. The integrated graphics, when present, are a chipset feature, so the CPU itself does not contribute to graphics performance.

Power and Thermals

The Atom E660 has a TDP of 3W. This is an extremely low thermal design power, placing it in the lowest tier of processor power consumption. The 3W figure means that the processor generates very little heat, which in turn implies that cooling requirements are minimal. A basic heatsink or even a passive cooling solution could suffice, though the database does not specify any particular cooler. The low TDP also makes the processor suitable for battery-powered devices, where power efficiency is critical. The 45 nm process node, while old, is still capable of achieving this low power draw because the processor has only one core and a fixed 1300 MHz clock. The absence of a boost clock means that power consumption is constant under load, rather than varying with dynamic frequency scaling. The 3W TDP is a key specification for system designers, as it allows for compact, fanless designs. However, the trade-off is that the processor’s computational capability is correspondingly limited. The thermal design is a direct consequence of the single core and low clock speed, and it is a defining characteristic of this Atom part.

How It Compares

The database lists no nearest rivals for the Intel Atom E660. The nearestRivals array is empty, so there are no rival names, scores, or deltaPct values to reference. This absence of comparison data means that any direct performance comparison is impossible. The only positional metric is the percentile rank of 50, but without benchmark scores, that rank cannot be used to infer a relative standing. The processor’s single core and two threads are the only architectural facts that can be used for indirect comparison. Any multi-core processor would naturally outperform it in multi-threaded workloads, but no specific rival is provided. The lack of benchmark data is a significant limitation for this page. The Atom E660 is a low-power, single-core part from 2010, and its position in the database is essentially undefined. The percentile rank of 50 is a placeholder, not a performance measurement. Without a nearest rival, we cannot state whether it is faster or slower than any other CPU.

Single-Thread vs Multi-Thread Behavior

The Atom E660 has one core and two threads, which indicates support for hyper-threading. This allows a single physical core to execute two threads simultaneously. The base clock of 1300 MHz applies to both threads. In single-threaded workloads, the entire core is dedicated to one thread, but the clock speed is low, so performance is modest. In multi-threaded workloads, the two threads share the core’s execution resources, which can improve throughput for tasks that are not dependent on a single thread. However, the benefit is limited because there is only one physical core. The cache hierarchy includes a 64 KB L1 cache per core and a 512 KB L2 cache per core. These are small by modern standards, and the L2 cache is per core, which, with one core, means it is the only cache level. The lack of a boost clock means that the processor cannot increase its frequency for single-threaded tasks, so the 1300 MHz clock is the maximum and minimum. The fixed clock speed means that the single-thread and multi-thread performance are both constant. The database provides no benchmark scores to quantify the difference between single-thread and multi-thread performance. The architectural split suggests that the processor is better suited to multi-threaded tasks that can utilize the second thread, but the single core limits the overall throughput. The small caches and low clock speed further constrain performance. This processor is not designed for high-performance computing, but rather for low-power, basic tasks where efficiency is more important than speed.