Intel Atom E645CT

The Intel Atom E645CT is a 2010-era mobile processor built on the 45 nm Stellarton architecture, featuring a single physical core with two threads via Hyper-Threading. With a base clock of 1000.00 MHz and no boost capability, it targets low-power embedded and mobile applications rather than performance-oriented computing.

Benchmark Performance

The benchmark data for the Intel Atom E645CT is notably sparse: the average benchmark score is 0, and there are no recorded entries in the benchmarks array. This places the processor at the 50th percentile among all CPUs in the database, which is a median position, but this percentile is largely a placeholder given the absence of actual performance scores. Without concrete benchmark numbers, direct performance comparisons to rivals are impossible from the provided data. The lack of any scores means that the E645CT has not been validated in standardized tests within this database, making its real-world performance a matter of inference from its architectural specifications rather than measured results.

What can be interpreted is the inherent performance ceiling implied by the hardware: a single core at 1000.00 MHz with 64 KB of L1 cache and 512 KB of L2 cache per core. This configuration is characteristic of ultra-low-power Atom parts designed for basic tasks like light web browsing, document editing, or embedded control systems. The absence of a boost clock means the processor operates at a fixed frequency, so performance is consistent but never accelerates under load. In the context of the database, the 50th percentile rank is misleading, it does not reflect a competitive midpoint but rather the default position when no data exists. Any discussion of benchmark performance must therefore be framed around the architectural limits rather than measured deltas, as the nearestRivals array is empty and no percentage differences can be cited.

Power and Thermals

The Intel Atom E645CT carries a TDP of 4 watts, which places it in the ultra-low-power class of processors. This TDP figure is exceptionally low, indicating that the chip dissipates minimal heat and requires only the most basic cooling solution. In practical terms, a passive heatsink or a very small, low-speed fan is sufficient to maintain safe operating temperatures. The 45 nm process node, while old by modern standards, contributes to this efficiency by keeping leakage currents manageable at the modest 1000.00 MHz clock speed.

For system builders, the 4-watt TDP implies that thermal management is nearly a non-issue. The processor can be used in fanless designs, which is a significant advantage in silent PCs, thin-and-light mobile devices, or industrial embedded systems where reliability and low noise are priorities. The socket is Intel BGA 1466, meaning the chip is soldered directly to the motherboard, so cooling solutions must be attached to the board itself rather than the CPU package. The integrated GMA 600 graphics also share the same thermal envelope, so the total system heat output remains minimal. Given the end-of-life production status, replacement parts are scarce, but for existing systems, the cooling requirements are trivial, a simple aluminum heatsink with adequate airflow is more than capable. The lack of a boost clock further ensures that power draw never spikes, keeping thermals flat even under sustained load.

Who Should Consider It

The Intel Atom E645CT is not a processor for gamers, content creators, or anyone running demanding applications. Its single core at 1000.00 MHz, paired with 512 KB of L2 cache, is suited for basic, single-threaded tasks. For office work involving word processing, spreadsheets, and email, the E645CT can handle these workloads, but only with patience, the lack of multi-core performance means multitasking will cause noticeable slowdowns. The two threads via Hyper-Threading provide some semblance of parallelism, but the physical single core limits throughput.

Given the 4-watt TDP and the integrated GMA 600 graphics, this processor is best suited for embedded applications such as point-of-sale terminals, thin clients, or simple industrial controllers where software is lightweight and predictable. It is also viable for a dedicated, low-power home server running a single lightweight service like a print server or a basic firewall, where the low power draw is a benefit. For general-purpose mobile computing, the E645CT is inadequate, modern operating systems and web pages require more processing headroom. The 2010 release date and end-of-life status mean that it is not a viable purchase for new builds, but for legacy system maintenance or retro computing projects, the processor offers a functional, if slow, experience. The DDR2 memory support further limits the platform to older, slower memory, reinforcing that this is a chip for specific, low-intensity roles rather than daily driver use.

How It Compares

The nearestRivals array for the Intel Atom E645CT is empty, meaning there are no direct comparison points provided in the database. This absence of rival data is itself informative: it suggests that the processor occupies a niche with few comparable parts in the benchmark database. Without named competitors, no percentage deltas can be calculated, and no positional analysis against specific models is possible. The 50th percentile ranking, in the absence of any scores, is a default value rather than a meaningful comparison.

In a broader sense, the E645CT would sit below most Atom successors and all modern Celeron or Pentium parts in performance, but those comparisons cannot be quantified here due to the missing data. The processor’s single core and low clock speed place it at the bottom of the performance hierarchy, but the lack of rival entries means this is an inference from the specification sheet rather than a measured result. For anyone evaluating this chip, the practical takeaway is that it is not competitive with any modern processor, and its value lies solely in its low power consumption and simplicity. Since no rival scores are listed, the only honest statement is that the E645CT is an unmeasured outlier in the database, with its performance profile defined by its architecture rather than head-to-head benchmarks.

Single-Thread vs Multi-Thread Behavior

The Intel Atom E645CT has one physical core and two threads, with a base clock of 1000.00 MHz. This configuration means that single-thread performance is the primary determinant of overall responsiveness. The 64 KB L1 cache and 512 KB L2 cache are small by modern standards, so the processor benefits from workloads that fit within this cache footprint. Single-threaded tasks like basic arithmetic, simple scripting, or legacy application execution will run at the fixed 1000.00 MHz speed, with no boost to accelerate transient loads.

The dual-thread capability, via Hyper-Threading, allows the single core to handle two threads simultaneously, but this does not double throughput. In practice, multi-threaded performance is only marginally better than single-threaded, as the core still has to share its execution resources. For real workloads, this means that a heavily multi-threaded application, such as video encoding or modern web browsing with many tabs, will cause the processor to saturate quickly, leading to stuttering or freezing. Conversely, a single-threaded workload that is not CPU-bound, like a text editor waiting for keyboard input, will feel adequate. The lack of a boost clock is the key limitation here: there is no headroom for bursty tasks that momentarily need extra speed. The data indicates a processor that is strictly linear in performance, with no adaptive frequency behavior. For users, this means that the E645CT is best paired with one focused application at a time, and any attempt at parallel workloads will expose the single-core bottleneck.

FAQ

Q: What is the base clock speed of the Intel Atom E645CT?

A: The base clock speed is 1000.00 MHz, with no boost clock available, so the processor runs at a fixed frequency.

Q: Does the Intel Atom E645CT support ECC memory?

A: No, ECC memory is not supported, and the processor only supports DDR2 memory.

Q: What is the thermal design power (TDP) of this processor?

A: The TDP is 4 watts, which is extremely low and allows for passive or near-passive cooling solutions.

Q: How many cores and threads does the Intel Atom E645CT have?

A: It has 1 core and 2 threads, using Hyper-Threading on a single physical core.

Q: What integrated graphics does the Intel Atom E645CT include?

A: It includes integrated GMA 600 graphics, which are basic and suitable for simple display output.

Q: When was the Intel Atom E645CT released, and what is its production status?

A: It was released on 2010-11-21 and is now marked as end-of-life in production status.