Intel Celeron 787

Intel Celeron 787 is a single-core, single-thread mobile processor built on Intel’s 32 nm Sandy Bridge architecture, released on June 30, 2011. It carries a 1.30 GHz base clock with no boost capability, a 17 W TDP, and an integrated Intel HD (Sandy Bridge) graphics solution. The chip is now end-of-life, and benchmark data shows it sits at the 50th percentile of all CPUs in the database, though its average benchmark score is zero, indicating no measured performance samples are available.

Single-Thread vs Multi-Thread Behavior

The Celeron 787 is a pure single-thread design: one core, one thread, no hyper-threading. This configuration dictates that all workload performance is derived from a single execution pipeline operating at a fixed 1.30 GHz. For real-world tasks, this means the processor can only execute one instruction stream at a time; any application that spawns additional threads will see them serialized or queued, rather than processed in parallel. The absence of a boost clock further cements this behavior — the chip cannot transiently raise its frequency to handle a brief spike in demand, so sustained single-thread throughput is capped at the base clock rate.

The architecture’s 64 KB L1 and 256 KB L2 caches are allocated per core, but with only one core present, those caches are exclusively available to the lone thread. The 1.5 MB shared L3 cache is also entirely accessible to that single thread, which can reduce memory latency for sequential workloads. However, the practical impact is limited by the low clock speed and the lack of multi-threading. In office productivity tasks that are largely single-threaded — such as word processing or spreadsheet navigation — the processor will deliver consistent, if modest, responsiveness. In contrast, modern web browsing with multiple tabs or background scripts will quickly saturate the single thread, leading to noticeable stalls when switching between active content.

Multi-threaded performance is effectively non-existent by design. Any rendering, compilation, or data processing task that scales across cores will see near-zero benefit from additional threads, as the hardware cannot provide them. The 50th percentile ranking among all CPUs reflects this dichotomy: it is neither a bottom-tier part nor a competitive one, but rather a baseline against which other low-power mobile chips are measured. For users running a single foreground application without background multitasking, the behavior is predictable and stable; for anything else, the lack of parallel resources becomes the primary bottleneck.

Power and Thermals

The Celeron 787 is rated at a 17 W TDP, placing it in the ultra-low-power class of mobile processors. This figure indicates the maximum sustained thermal design power the cooling solution must dissipate under typical heavy loads. A 17 W envelope is well within the capabilities of passive cooling in a thin-and-light chassis, or a very small active fan with a low profile heatsink. The 32 nm process node and 504 million transistor count on a 131 mm² die contribute to this efficiency, as the modest transistor density and low clock speed keep switching losses minimal.

Thermal behavior follows directly from the power envelope. At a fixed 1.30 GHz with no boost states, the chip will generate a nearly constant heat output during operation, avoiding the thermal spikes associated with frequency ramping. This makes thermal management straightforward: a basic heatsink with adequate airflow can maintain safe temperatures without throttling. The integrated Intel HD (Sandy Bridge) graphics shares the same thermal budget, so running GPU-intensive tasks like video playback will add to the heat load, but still within the 17 W design point.

For system integrators, the 17 W TDP implies a cooling tier equivalent to what one might find in a fanless tablet or a low-end ultrabook. No high-performance cooling solution is required, and the lack of a boost clock means there is no transient thermal headroom to manage. The end-of-life status suggests that replacement parts may be scarce, but for a device already in service, the thermal profile is benign enough to allow for compact enclosures and silent operation. The 17 W figure is the sole power metric available; no idle or peak wattage data is provided, so efficiency beyond the TDP rating cannot be quantified.

Platform and Compatibility

The Celeron 787 uses the Intel BGA 1023 socket, which is a ball-grid array package designed for direct soldering to the motherboard. This means the processor is not user-replaceable or upgradeable; it is permanently attached to the board. The platform is based on the Sandy Bridge architecture, which dictates the memory and I/O capabilities. Memory support is limited to DDR3 with a dual-channel bus, though the single-core design will not benefit significantly from dual-channel bandwidth in most workloads. ECC memory is not supported, so the chip is unsuitable for error-correcting memory environments.

PCIe support is not specified in the available data, so no concrete lane count or revision can be stated. The integrated graphics is Intel HD (Sandy Bridge), which provides basic display output but no discrete GPU interface is described. The market segment is Mobile, confirming this is intended for laptops, netbooks, or embedded portable devices. The production status is end-of-life, and the release date of June 30, 2011, indicates a platform that is over a decade old. The part number is SR0EC, and the multiplier is locked, so no overclocking is possible.

Upgrade path is effectively non-existent: since the CPU is soldered, any performance improvement requires a full motherboard replacement, which is impractical given the socket’s age. The 32 nm process is mature, and the 504 million transistor count is fixed. For a user with a functioning Celeron 787 system, compatibility is limited to the original DDR3 memory and any peripherals that the motherboard’s chipset supports. The lack of PCIe data leaves expansion capabilities unclear, but the mobile form factor suggests limited slots. The integrated graphics handles basic video output, but there is no information on display outputs or acceleration features beyond the architecture name.

How It Compares

The nearestRivals field is empty, so there are no direct comparison scores or deltaPct values available. Benchmark results indicate the processor has an average score of zero, meaning no performance samples have been recorded in the database. The percentileVsAllCpus value of 50 places it at the median of all CPUs, but without rival data, this ranking is relative to an unknown set of processors. In the absence of specific rival scores, the Celeron 787’s position can only be inferred from its architecture and specifications.

Given its single-core, single-thread design at 1.30 GHz, it would logically sit below any dual-core or hyper-threaded part from the same era. A typical Sandy Bridge dual-core mobile chip would offer twice the thread count and likely a higher base clock, resulting in significantly better multi-threaded performance. Even in single-thread tasks, a higher-clocked competitor would outperform the 787, as the latter has no boost capability. The 17 W TDP is low, but that efficiency comes at the cost of raw speed.

The 50th percentile ranking is surprising given the sparse specifications, but it may reflect a database that includes many similarly low-power embedded or legacy parts. Without nearestRivals data, no percentage deltas can be cited, and no specific competitor names can be mentioned. The lack of benchmarks means the chip’s real-world performance is unverified, and the zero average score suggests it is not a commonly tested processor. For any comparison, the data shows the Celeron 787 is a baseline part that is neither a standout nor a laggard in the overall distribution, but its practical utility is constrained by its single-threaded nature.

Who Should Consider It

The Celeron 787 is suited for very specific, low-demand use cases where the constraints of single-threaded operation are acceptable. For basic office tasks — word processing, spreadsheet entry, and email — the 1.30 GHz clock is sufficient to handle simple document edits without noticeable delay, provided the user does not run multiple applications simultaneously. The 17 W TDP makes it viable for fanless or passively cooled devices, so a lightweight laptop for note-taking or a kiosk system could operate silently.

Gaming is not a realistic scenario for this processor. Any modern game requires at least two cores and a higher clock speed; the integrated Intel HD (Sandy Bridge) graphics is from an era before even entry-level 3D acceleration, so frame rates would be unplayable. Content creation — video editing, 3D rendering, or large photo manipulation — is also out of scope due to the lack of multi-threading and the low base clock. The processor would struggle with even casual photo editing in a web browser.

The chip could serve as a secondary machine for legacy software that is strictly sequential, such as older database front-ends or serial terminal emulators. It is also acceptable for embedded control systems where a fixed, low-power compute element is required and software is written to a single thread. The end-of-life status means new purchases are unlikely, but for a user with an existing system, the Celeron 787 is adequate for booting a lightweight operating system and running one application at a time. The 50th percentile ranking suggests it is not the worst performer, but the zero benchmark score indicates no evidence of competitive capability. Anyone needing more than basic single-task operation should look to a multi-core alternative, as the data provides no reason to expect headroom beyond the 1.30 GHz base clock.