Intel® Celeron® B840

The Intel Celeron B840 is a laptop processor with 2 cores and 2 threads, built on the Sandy Bridge architecture. It launched in Jul 2011. A 2-MB L3 cache backs the cores (1.6 MB per core). Rated TDP is 35 W.

The Intel Celeron B840 scores 886 in single-core performance and 975 in multi-core performance (PassMark CPU Mark ratings). From those two ratings Feex computes 929 for overall performance, 1,874 for productivity performance, 2,131 for creator performance, 908 for engineering performance and 2,902 for gaming performance. Its multi-core throughput works out to 488 per core, 488 per thread and 28 per watt. Its computed efficiency index is 157. Its performance index is 12, so its overall performance is 88% below the Intel Core i5-12400 (index 100). Each bar shows the score as a share of a reference ceiling, which is the larger of the 99th-percentile score across the Feex CPU database and a fixed baseline.

Scores for individual PassMark CPU Mark test categories. Higher is better. These are measured test scores, not computed from the single-core and multi-core ratings.

In the individual workload tests the Intel Celeron B840 scores 3,959 in integer math, 2,085 in floating-point math, 18,290 in compression, 187 in cryptography, 140 in physics simulation, 707 in vector SIMD, 9 in the prime sieve and 2,456 in sorting. Higher is better. Compared with the Intel Core i5-12400, it is 93% below in integer math, 95% below in floating-point math, 92% below in compression, 98% below in cryptography, 87% below in physics simulation, 95% below in vector SIMD, 87% below in the prime sieve and 89% below in sorting. Each bar shows the score as a share of that workload's reference ceiling, the larger of the 99th-percentile score across CPUs with a recorded value and a fixed baseline.

The Intel Celeron B840 has 2 physical cores and runs 2 logical threads. It does not use a hybrid performance and efficiency core layout. It does not support simultaneous multithreading, so its thread count equals its core count. It runs at a base clock of 1.90 GHz.

The Intel Celeron B840 is a laptop processor, belongs to the Intel Celeron family, uses the Sandy Bridge architecture and carries the codename Sandy Bridge. It launched in Jul 2011.

The Intel Celeron B840 has 256 KB of L1 cache, 1 MB of L2 cache and 2 MB of L3 cache. That adds up to about 3.3 MB of cache, or 1.63 MB per core.

The Intel Celeron B840 has a 3-level cache hierarchy: L1 at 256 KB, L2 at 1 MB and L3 at 2 MB. L3 is the largest level and makes up about 62% of the cache listed here.

The Intel Celeron B840 includes integrated graphics (HD Graphics (6 EUs)) and clocks the graphics up to 1.00 GHz.

The Intel Celeron B840 has a rated TDP of 35 W.

Instruction sets, security, virtualization, AI acceleration and OS readiness. Features are listed as supported, explicitly not supported, or not recorded; a feature that is not recorded is not the same as unsupported.

The Intel Celeron B840 is manufactured by Intel. It launched at a price of $86.

Feex has recorded 46% of the specifications it tracks for the Intel Celeron B840. Values Feex does not hold are shown as "Not recorded" rather than estimated.

Not recorded: Core Configuration: Efficiency Cores, All-Core Boost and Unlocked Multiplier. Architecture & Generation: ISA Family and Market Status. Cache: L2 Cache (per Core) and L4 Cache. Memory Support: Max Memory, Memory Channels, Memory Bandwidth, Memory Types, DDR5 Support, DDR4 Support, LPDDR Support, ECC Memory and Max Memory Speed. Graphics: Execution Units, Display Outputs and Max Video Memory. Platform & Compatibility: Socket, Package, Package Size, PCIe Generation and PCIe Lanes. Power & Thermals: Base Power, Maximum Turbo Power, Configurable TDP (Min), Configurable TDP (Max), Max Junction Temperature and Tcase. Physical & Manufacturing: Transistor Count, Die Size, Die Count and Foundry. Naming & Aliases: SKU, Model Number, Processor Number and Part Number.

Processors close to the Intel Celeron B840 in the Feex database, matched by socket, family, segment, architecture, core count, TDP and benchmark scores, include Intel Celeron G3930T, Intel Celeron G3930TE, Intel Celeron G6900T, Intel Celeron G5900T and Intel Celeron G6900TE.