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Intel Celeron G1820 review and testing

The present review is devoted to CPU Intel Celeron G1820 which is a good candidate to build inexpensive office computer as it has all necessary capabilities: sufficient performance level to cope with everyday tasks, low power consumption, integrated graphics core and of course low price.

Intel Celeron G1820

It belongs to Intel Celeron family which is presented by three processors:

CPU model

Intel Celeron G1820T

Intel Celeron G1820

Intel Celeron G1830

Quantity of CPU cores/threads

2 / 2

2 / 2

2 / 2

Basic/dynamic clock frequency, MHz

2400 / -

2700 / -

2800 / -

Graphics core

Intel HD Graphics

Intel HD Graphics

Intel HD Graphics

Basic/dynamic frequency of graphics core, MHz

200 / 1050

350 / 1050

350 / 1050

L3 cache memory capacity, MB




Maximum speed of DDR3 memory, MHz




Thermal package (TDP), W




As we can see from the table, the tested model Intel Celeron G1820 takes an intermediate position and has enough balanced performance.

Packaging, set of delivery and  packaged cooling system

Intel Celeron G1820

The box is very colorful and is characterized by a large number of printing with a predominance of blue and yellow colors. The most informative element of the front side is a small sticker with the name of the model and used CPU socket.

Intel Celeron G1820

On the side there are key features of Intel Celeron G1820:

• two cores operating in two-threaded mode;• support of Intel Smart Cache technology;• graphic core Intel HD Graphics;• integrated memory controller;• support of dual-channel mode for memory DDR3;• limited warranty for three years.

Intel Celeron G1820

Intel Celeron G1820

Upper edge of the box is equipped transparent opening that allows read the marking on the processor case. On the reverse side there is a sticker with the basic features and serial number of CPU.

Intel Celeron G1820

Set of delivery includes:

  • cooling system;
  • user’s manual;
  • warranty card;
  • sticker for computer case.

This set is quite standard for most inexpensive Intel processors. However, it contains everything you need to start the work.

Intel Celeron G1820

Cooling system consists of a small fan and round aluminum radiator. Intel E97379-001 model produced at the company Foxconn is used as a fan. Its operating voltage is 12 V and current strength is 0.17 A. The connection to the motherboard is performed via standard 4-pin connector.

Intel Celeron G1820

Radiator is made of aluminum without any additional copper parts. In general this cooling system should be enough for the processor Intel Celeron G1820 with TDP value of 53W. Let’s remind that a similar cooling system is shipped with more productive solution Intel Core i3-4130.

Design and technical specification

Intel Celeron G1820 Intel Celeron G1820

The case of the CPU contains the information about clock frequency and producer country (Malaysia) and also has a full model name and marking. The reverse side contains the contacts for connection to Socket LGA1150.

The specs:


Intel Celeron G1820



CPU socket

Socket LGA1150

Basic clock frequency, MHz




Basic frequency of system bus, MHz


L1 cache-memory capacity, KB

2 х 32 (data memory)

2 х 32 (instruction memory)

L2 cache-memory capacity, KB

2 х 256

L3 cache-memory capacity, KB



Intel Haswell

Number of cores/threads


Instruction set

MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, EM64T, VT-x



Power voltage, V


Max design power (TDP), W


Critical temperature, °C



Technological process, nm


Technology set

Virtualization of Intel (VT-x)

Intel VT-x with tables Extended Page Tables (EPT)

Architecture Intel 64

Idle condition

Intel SpeedStep

Technologies of thermal control

On-board memory controller

Max memory capacity, GB


Memory type


Number of memory channels


Maximum carrying capacity, GB/s


ECC memory support


On-board graphics core Intel HD Graphics

Basic frequency, MHz


Maximum frequency Turbo Boost, MHz


Capacity of used memory, GB


Technologies support

Intel Quick Sync Video

Maximum quantity of supported displays


Producer website

Product page


Intel Celeron G1820

Intel Celeron G1820

Intel Celeron G1820

Using utility CPU-Z 1.69 it became possible to obtain detailed information about the processor at full load. Intel Celeron G1820 does not support Intel Turbo Boost technology and its nominal cock frequency at the moments of reading was 2702 MHz. Multiplier index was “x27” and the core voltage 0.975V. Let’s note that a bench cooler was used for cooling during testing process and CPU temperature did not exceed 40°C.

Intel Celeron G1820

Intel Celeron G1820

After the transition to idle mode the multiplier index was dropped to “x8” which led to a reduction of clock frequency up to 800MHz. In this mode the supply voltage was reduced to 0,711V and the temperature up to 30°C.

Intel Celeron G1820

Now let's examine the scheme of cache memory distribution. There are 32 KB of cache memory per core with 8 associativity channels for caching the data and instructions. Also 256 KB of L2 cache with 8 associativity channels per each core and 2MB of total cache memory in L3 with 8 associativity channels is available.

Intel Celeron G1820

Built-in memory controller does not support the memory capacity more than 1333MHz. The maximum memory capacity is 32 GB which more than enough for this low cost CPU.

Intel Celeron G1820

Intel Celeron G1820

Information about the integrated graphic core Intel HD Graphics was obtained using the GPU-Z 0.7.8 program. It includes 10 universal shader pipelines, 2 rasterization blocks and 2 texture units and also has the support of instructions OpenCL and DirectCompute 5.0. Basic GPU frequency is 350MHz and dynamic speed reaches 1050MHz. During testing under load its temperature did not exceed 36°C. Data exchange between the graphics chip and memory was performed via 128-bit bus with carrying capacity 21.3 GB/s. 

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