Intel Celeron B800

The Intel Celeron B800 is a dual-core mobile processor built on Intel's Sandy Bridge architecture. Released on June 18, 2011, it operates at a fixed 1500 MHz base clock with no boost capability, and it pairs 2 cores with 2 threads. The integrated Intel HD (Sandy Bridge) graphics handle display output. The database places this chip at the 50th percentile among all CPUs, although its average benchmark score is recorded as 0, a data artifact of having no submitted benchmarks rather than a literal performance result.

Single-Thread vs Multi-Thread Behavior

The B800 is a 2-core, 2-thread processor. There is no hyper-threading; each core handles exactly one thread. The base clock is fixed at 1500 MHz, and no boost clock is specified, meaning the operating frequency does not rise under load. For single-threaded workloads, the performance ceiling is set by that 1500 MHz clock combined with the Sandy Bridge microarchitecture. Cache layout is straightforward: 64 KB of L1 per core, 256 KB of L2 per core, and 2 MB of shared L3. These cache sizes are small by modern standards, but they are consistent with the chip's 2011 release and its position at the low end of the Celeron line.

In real-world terms, the single-thread behavior is adequate for tasks that are not time-sensitive and do not demand high clock speeds. Applications like text editing, spreadsheet work, and basic web browsing with a few tabs will run, but they will not feel snappy when the CPU is the bottleneck. The lack of a boost clock means there is no headroom for bursty single-thread loads; the chip stays at 1500 MHz regardless of demand.

Multi-threaded behavior is more constrained. With only 2 threads available, the processor can execute two independent instruction streams simultaneously. Anything that scales beyond two threads, modern video encoding, large compilation jobs, or multitasking across many applications, will see the B800 fall behind. The 2 MB shared L3 cache is a single pool for both cores, which helps with data sharing between threads but does not compensate for the low thread count. For workloads that are genuinely parallel, the B800 is limited by the hardware thread count, not by the cache hierarchy.

The database's 50th percentile rank suggests that, among all CPUs tracked, this chip sits exactly in the middle. However, that rank is based on the spec profile rather than measured performance, since the average benchmark score is 0. The practical takeaway is that the B800 is a single-thread-leaning part by necessity, it has only two threads, so any workload that is not parallel will dominate its behavior.

Power and Thermals

The B800 carries a TDP of 35 watts. For a mobile processor, this is a moderate power envelope. It implies that a basic cooling solution, a small fan and heatpipe assembly, or a larger passive heatsink in a chassis with good airflow, is sufficient. The 35 W figure is the thermal design point; sustained loads will stay within that budget, and the lack of a boost clock means there are no power spikes from frequency ramping.

The underlying process technology helps explain the power profile. The chip is fabricated on a 32 nm process at Intel's own foundry, with 504 million transistors packed into a 131 mm² die. The 32 nm node was a mature generation at the time of release, and the transistor count is modest by later standards. A smaller die area generally reduces thermal density, and the 35 W TDP reflects a design that prioritizes predictable power draw over peak performance.

For cooling, the practical implication is that the B800 does not require an exotic cooler. A capable air cooler, one sized for a low-power mobile chip, will hold it at safe temperatures. Because the multiplier is locked (multiplierUnlocked: false), there is no overclocking headroom, so cooling does not need to account for enthusiast tuning. The end-of-life production status means this chip is no longer manufactured, but systems that still run it will not challenge modern cooling hardware.

Thermal behavior is also influenced by the integrated Intel HD (Sandy Bridge) graphics. The GPU shares the die with the CPU cores, so combined CPU+GPU loads will push the 35 W envelope. Light graphics tasks, video playback, 2D rendering, will draw additional power within the same TDP budget. The absence of a boost clock means the CPU portion does not dynamically increase its power draw, which keeps thermals predictable.

Platform and Compatibility

The B800 uses Intel Socket G2 (988B), a mobile socket from the Sandy Bridge era. This socket is exclusive to laptop and small-form-factor mobile boards; it is not compatible with desktop sockets. The chip is end-of-life, so new boards are not produced, and the upgrade path is effectively closed. A system built around this socket cannot move to a newer generation without a full board replacement.

Memory support is DDR3, running on a dual-channel bus. Dual-channel operation means the memory controller can access two DIMMs simultaneously, which improves bandwidth for memory-sensitive workloads. ECC memory is not supported, so this is not a chip for error-correcting memory configurations. The lack of ECC is typical for a consumer mobile Celeron.

The integrated graphics are Intel HD (Sandy Bridge). This GPU provides basic display output and hardware acceleration for video decode, but it is not designed for demanding 3D workloads. The memory bus feeds both the CPU and the integrated GPU, so dual-channel DDR3 is the practical minimum for acceptable graphics performance.

The multiplier is locked, so the CPU frequency cannot be adjusted beyond the stock 1500 MHz. The part number is SR0EW. The process node is 32 nm, with a 131 mm² die and 504 million transistors. There is no PCIe information recorded in the database, so expansion capabilities cannot be assessed from this data. For a mobile chip, PCIe lanes would typically connect to a discrete GPU or storage, but the absence of that data means it cannot be confirmed here.

The production status is end-of-life, and the release date of June 18, 2011, places it in the early Sandy Bridge cycle. The Celeron generation label confirms this is a low-end part within that architecture family.

How It Compares

The database does not list any nearest rivals for the Intel Celeron B800. The nearestRivals field is empty, so there are no direct comparison scores or deltaPct values to reference. This means a spec-level comparison must rely on the chip's own characteristics rather than head-to-head benchmark deltas.

Positioning the B800 without rivals requires looking at its place in the product stack. It is a dual-core, dual-thread mobile chip with a 1500 MHz base clock and no boost. That places it at the entry level of the Sandy Bridge mobile lineup. The 35 W TDP is lower than what a performance-oriented mobile chip would draw, and the integrated Intel HD graphics are the only GPU option. The 2 MB shared L3 cache is small, and the dual-channel DDR3 memory support is standard for the era.

Against a hypothetical modern low-end chip, the B800 would lag significantly in both single-thread and multi-thread performance due to its age, clock speed, and thread count. But because no rival data is provided, such a comparison cannot be quantified. The only numerical anchor is the 50th percentile rank, which suggests the database views it as an average CPU, but with an average benchmark score of 0, that rank is provisional.

The lack of rivals also means there are no deltaPct values to cite. In a database where most processors have a set of nearby competitors, the B800 stands alone. This is likely a consequence of its age and end-of-life status; few modern workloads are benchmarked on this hardware. The practical conclusion is that the B800 occupies a niche with no directly tracked competition in the current database.

Benchmark Performance

The benchmark data for the B800 is sparse. The average benchmark score is 0, and the percentile versus all CPUs is 50. A score of 0 in this database typically indicates that no benchmark runs have been submitted or recorded for the processor. It does not mean the chip executes zero instructions; rather, it reflects an absence of measurement data. The 50th percentile is the rank assigned to the chip among all CPUs tracked, but without a non-zero score, that rank is not backed by performance measurements.

Interpreting the percentile: a 50th percentile position means half of the tracked CPUs are above and half are below. But because the score is 0, this percentile is likely derived from the spec sheet, core count, clock speed, cache, rather than from empirical results. For the B800, the spec sheet describes a 2-core, 2-thread chip at 1500 MHz with 2 MB of L3 cache. Those specifications would place it below most modern desktop and mobile processors, which typically have higher clocks, more cores, and larger caches.

Without benchmark scores, the performance analysis must lean on the architecture. Sandy Bridge was a solid generation for Intel, but the Celeron B800 is the lowest tier of that generation. The 1500 MHz clock is low, and the lack of a boost clock means no dynamic frequency increase. In single-thread tasks, the B800 would score far below a modern chip with a substantially higher clock. In multi-thread tasks, the 2-thread limit caps throughput.

The deltaPct values are not available because there are no rivals. In a typical comparison, a meaningful delta would indicate a gap; here, no such numbers exist. The only concrete figures are the 0 average score and the 50th percentile. The 0 score should be read as "no data," and the 50th percentile as a placeholder rank. For anyone evaluating the B800, the absence of benchmark data is itself informative: this chip is not tested in modern suites, which suggests it is not a target for current workloads.

Who Should Consider It

The B800 is a chip for legacy and low-intensity use. With 2 cores, 2 threads, and a 1500 MHz base clock, it is suited to single-tasking office work, word processing, spreadsheets, and email. The integrated Intel HD graphics can drive a basic display and handle video playback, but not modern 3D games or GPU-accelerated rendering. The 35 W TDP makes it viable in small, lightly cooled mobile chassis.

For gaming, the B800 is not a viable option. The 2-thread limit and low clock speed will bottleneck any modern game, and the integrated graphics lack the shader throughput for 3D titles. The 50th percentile rank does not rescue it; that rank is a database artifact, not a performance endorsement. A user considering this chip for gaming should look elsewhere.

For content creation, video editing, 3D modeling, audio production, the B800 is equally unsuitable. These workloads scale with thread count and clock speed, and the B800 has neither. The 2 MB shared L3 cache is too small for large working sets, and the dual-channel DDR3 memory, while adequate for the era, is far below modern bandwidth. The absence of a boost clock means there is no transient performance headroom for render bursts.

The realistic audience for the B800 is someone maintaining an old laptop for basic tasks. Web browsing with a few tabs, document editing, and light spreadsheet work will run within the chip's capabilities. The 35 W TDP keeps cooling simple, and the end-of-life status means replacement parts are scarce but the chip itself is stable. For a secondary machine or a dedicated text-entry device, the B800 is workable. For anything demanding, it is not.

The database's average benchmark score of 0 reinforces this: no one is benchmarking this chip for serious work. The 50th percentile is a neutral placement, but the spec sheet tells the real story. A dual-core, 1500 MHz, no-boost mobile Celeron from 2011 is a historical part, not a performance part. Anyone considering it should match it to workloads that respect its limits, single-threaded, low-demand, and patient.