Celeron B820

Details and Benchmarks for Intel Celeron B820

Sysbuilds Alpha Stage!

Please take all results with a big grain of salt. Sysbuilds is in alpha stage at the moment which can lead to wrong data, strange counting errors, silly results and more. This site is under active development.

Benchmark Results

Combined benchmark scores based on multiple data points, giving a quick overview of this processor's performance.

Overall Score

Overall score for Celeron B820 based on all benchmark results gathered. Look at this like a meta score, you will find more specific workload ratings below.

4,030 Rank: 1860
Rank Name Score Visual
1856 Athlon II P360 4,034
+0.1%
1857 Celeron J3455 4,033
+0.1%
1858 A6-7000 4,032
+0%
1859 A4-3305M 4,031
+0%
1860 Celeron B820 4,030
1861 Athlon II M300 4,030
+0%
1862 Sempron 140 4,030
+0%
1863 Phenom X4 9600B 4,026
-0.1%
1864 Pentium N3540 4,025
-0.1%
1865 V140 4,024
-0.1%

View full ranking →

Multicore Score

Multicore performance score for Celeron B820 based on multi-threaded benchmark results.

4,320 Rank: 1685
Rank Name Score Visual
1681 Pentium G2020 4,322
+0%
1682 A4-7300 4,322
+0%
1683 Intel Celeron N3160 4,321
+0%
1684 A6-7400K 4,321
+0%
1685 Celeron B820 4,320
1686 A9-9420 4,320
+0%
1687 Core 2 Duo T9800 4,320
+0%
1688 Athlon II X2 215 4,320
+0%
1689 Core i5-430M 4,320
+0%
1690 Core i3-380M 4,320
+0%

View full ranking →

Singlecore Score

Single-core performance score for Celeron B820 based on single-threaded benchmark results.

3,836 Rank: 1864
Rank Name Score Visual
1860 Pentium J4205 3,849
+0.3%
1861 Celeron N3350 3,848
+0.3%
1862 Celeron E1500 3,848
+0.3%
1863 Phenom X4 9850 3,841
+0.1%
1864 Celeron B820 3,836
1865 Athlon 64 X2 4800+ 3,834
-0.1%
1866 Pentium 997 3,833
-0.1%
1867 Intel Pentium P6100 3,831
-0.1%
1868 Pentium N3540 3,830
-0.2%
1869 Core 2 Duo T7200 3,830
-0.2%

View full ranking →

Workload Scores

Performance scores grouped by workload type, normalized and aggregated from multiple raw benchmark results.

Number Crunching

Aggregated score for Celeron B820 based on integer math, floating point math, and prime number computation benchmarks.

4,483 Rank: 1648
Rank Name Score Visual
1644 Atom x5-Z8550 4,484
+0%
1645 Celeron N3160 4,484
+0%
1646 Celeron E3500 4,484
+0%
1647 Phenom X3 8550 4,484
+0%
1648 Celeron B820 4,483
1649 Atom C3338 4,483
+0%
1650 Athlon II X2 B24 4,483
+0%
1651 Athlon II X2 245 4,483
+0%
1652 A4-4355M 4,483
+0%
1653 Celeron B815 4,482
+-0%

View full ranking →

Data Processing

Aggregated score for Celeron B820 based on data encryption, data compression, and string sorting benchmarks.

4,444 Rank: 1680
Rank Name Score Visual
1676 Celeron E1500 4,446
+0%
1677 Athlon II X2 260u 4,446
+0%
1678 Celeron B810 4,445
+0%
1679 Celeron 2955U 4,445
+0%
1680 Celeron B820 4,444
1681 Celeron 1017U 4,444
+0%
1682 E2-3000M 4,444
+0%
1683 Celeron N2840 4,444
+0%
1684 Pentium P6000 4,444
+0%
1685 Celeron B815 4,443
+-0%

View full ranking →

Physics & Compute

Aggregated score for Celeron B820 based on physics simulation and extended instruction set (SSE/AVX) benchmarks.

4,470 Rank: 1599
Rank Name Score Visual
1595 Celeron 2955U 4,471
+0%
1596 A6-5357M 4,471
+0%
1597 Pentium N3700 4,470
+0%
1598 Celeron J4005 4,470
+0%
1599 Celeron B820 4,470
1600 Athlon II X2 270 4,470
+0%
1601 E2-7110 4,470
+0%
1602 Celeron N3150 4,470
+0%
1603 A6-5350M 4,470
+0%
1604 A4-5300B 4,470
+0%

View full ranking →

Celeron B820 Details

As of March 2026, the Intel Celeron B820 remains a relic of a bygone era in mobile computing, having been launched in July 2012. Despite its age, the processor still finds niche relevance in low-cost systems or legacy hardware support, particularly where power efficiency and basic functionality are prioritized over performance. Built on Intel's Sandy Bridge microarchitecture at a 32 nm process, the B820 is a dual-core, dual-thread mobile CPU designed for entry-level laptops. Its base frequency of 1.7 GHz, paired with a 35 W TDP, makes it a low-power option, though its performance is now well below modern standards.

The Celeron B820 features a 2 MB L3 cache and supports dual-channel DDR3-1333/DDR3-1066 memory with a maximum capacity of 16 GB and a bandwidth of 19.87 GiB/s. It integrates Intel HD Graphics (Sandy Bridge), which operates at a base frequency of 650 MHz and can boost to 1.05 GHz, offering basic graphics performance suitable for light multimedia tasks and 1080p video playback. The processor is socketed in rPGA988B, also known as Socket G2, and supports Intel's virtualization technologies, including VT-x and EIST, which enhance efficiency and system responsiveness.

In benchmark testing, the Celeron B820 achieves an overall score of 4030, ranking #1860 out of 2060 processors, with a single-core score of 3836 (#1864) and a multicore score of 4320 (#1685). While it outperforms a few older or lower-tier processors such as the Pentium N3540 and Athlon II X4 600e, it falls significantly behind modern low-power chips like the Celeron N3160 and Atom x5-Z8550. Its multicore performance is notably stronger than its single-core performance, suggesting that its architecture benefits more from parallel workloads than from raw clock speed.

Despite its outdated nature, the Celeron B820 remains relevant in specific contexts, such as embedded systems, industrial control units, or devices where long-term software compatibility is essential. Its 32 nm process and 504 million transistors reflect the state of mobile computing over a decade ago, and while it lacks modern features like AVX-512 or PCIe 4.0, it does support essential instruction sets such as SSE4.1, SSE4.2, and AES-NI, ensuring basic software compatibility.

In conclusion, the Intel Celeron B820 is a product of its time, suitable only for minimal computing tasks in environments where cost, power consumption, and compatibility outweigh performance demands. For users seeking modern computing experiences, even the most basic contemporary processors far surpass its capabilities, making the B820 a historical footnote in the evolution of Intel's mobile lineup.
Frequently Compared

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Intel Celeron B820

Main Specifications

Designer: Intel
Name: Celeron B820
Family: Celeron
Series: 800
Model Number: B820
Cores: 2
Threads: 2
Base Frequency: 1700 MHz
Clock Multiplier: 17x (locked)
Microarchitecture: Sandy Bridge
Core Name: Sandy Bridge M
Core Family: 6
Core Model: 42
Socket: Socket
Package: rPGA988B
Chipset: Cougar
Target Segment: Mobile
Max CPUs: 1
TDP: 35 W
Release Price: $86.00

Cache Specifications

L1 Cache: 128 KiB
L1 Instruction Cache: 64 KiB (8-way set associative)
L1 Data Cache: 64 KiB (8-way set associative)
L2 Cache: 0.5 MiB (8-way set associative)
L3 Cache: 2 MiB (8-way set associative)

Memory Specifications

Supported Memory Type: DDR3-1333 and DDR3-1066
Memory Channels: 2
Maximum Memory: 16 GB
Maximum Bandwidth: 19.87 GB/s
ECC Support: No

PCI-Express Specifications

PCIe Revision: 2.0
PCIe Lanes: 16
PCIe Configuration: 1x16, 2x8, 1x8+2x4

Integrated Graphics

GPU: HD
GPU Designer: Intel
GPU Max Frequency: 1050 MHz
Execution Units: 6

Physical Specifications

Process: 32 nm
Die Area: 131 mm²
Transistor Count: 0.50 billion
Manufacturer: Intel
Technology: CMOS
Word Size: 64-bit
ISA: x86-64 (x86)

CPU Features

MMX EMMX SSE SSE2 SSE3 SSSE3 SSE4.1 SSE4.2 AVX AVX2 BMI1 BMI2 FMA3 AES CLMUL F16C x86-16 x86-32 x86-64 Real Protected SMM FPU NX HT TBT 2.0 EIST TXT vPro VT-x VT-d EPT Secure Key SMEP SIPP IPT TSX Flex Memory FMA
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