Intel Celeron N2820 socket: BGA 1170

What the Celeron N2820 is

Intel Celeron N2820 is a dual core Bay Trail-M notebook SoC that Intel released in December 2013 for value laptops. It uses the Silvermont core design on a 22 nm process, running at 2.13 GHz with burst to 2.39 GHz. The cache is 1 MB L2 (512 KB per core). Power is 7.5 W (4.5 W SDP), with scenario design power below that for thin chassis. Graphics come from Intel HD Graphics for Atom Z3700 series (313 MHz to 756 MHz), which drives the laptop display without a separate chip.

The cores are complete Silvermont cores with no Hyper-Threading, so threads equal cores at 2. Each core carries 512 KB of L2, shared in pairs per module. Silvermont differs from the Saltwell cores in Clover Trail: it is out of order with a wider front end, which lifts per clock throughput at the same power. The SoC integrates the memory controller, graphics and tablet I/O on die.

At 7.5 W (4.5 W SDP) the Celeron N2820 belongs to the dual core N2800 group of the Celeron N series. The 2.13 GHz base with 2.39 GHz burst suits web, office and classroom work with fanless or single fan cooling. Laptops pair it with eMMC or SATA SSD storage. The How to find your CPU socket type guide shows how to confirm the package before ordering parts.

Socket and motherboard compatibility

The Celeron N2820 solders to BGA 1170 with 1,170 balls in a 25 by 27 mm footprint and cannot be moved to another board. Laptop makers qualify each model with a specific board and BIOS, so even another Bay Trail-M part is not a drop in upgrade. Boards follow value notebook layouts with soldered memory in many thin designs.

Power and firmware decide service results. The 7.5 W (4.5 W SDP) envelope sizes the heat spreader and fan curve, and the board BIOS must list the exact Celeron N2820 string. The CPU cooler compatibility by socket guide notes that soldered mobile parts have no desktop mount pattern. Socket vs chipset: what decides whether a CPU works covers Intel pairing basics.

Memory, PCIe and cooling

Memory support is ddr3l-1066, two channels, up to 8 gb. Single channel keeps board cost down on dual core value bodies, with up to 4 GB in most designs. Many thin boards solder the memory, so capacity locks at purchase.

PCI Express is PCIe 2.0 with 4 lanes in a 1 by 4 split. Notebook boards wire lanes to Wi-Fi and SSDs rather than graphics slots. A SATA SSD matches the power budget without wasting lanes, and there is no graphics card slot to consider.

Cooling uses the laptop thermal solution, not a retail mount. The 7.5 W envelope suits single fan thin bodies with a spreader over the SoC. Repaste and fan cleaning help sustained burst more than any setting change.

Upgrade paths

There is no CPU upgrade path on soldered BGA 1170. The Celeron N2820 cannot be removed, so a faster Bay Trail-M part means a new board or a new laptop. Within the family, Intel Celeron N2830 shows another BGA 1170 option, but boards and firmware rarely mix across makers.

A platform move means a new laptop. Current Intel mobile lives on newer BGA packages with DDR4 or LPDDR4 and current wireless, which no BGA 1170 board can reach. Batteries, displays and keyboards also age with the board, so a whole system replacement usually beats a board swap. Recycle the old laptop through a proper e waste path once data is wiped.