Intel Celeron G1840 socket: LGA 1150

What the Celeron G1840 is

The Celeron G1840 is the standard power Haswell Celeron for entry desktops on LGA 1150. Intel set two cores and two threads at 2.8 GHz with 2 MB of cache. Power is 53 W on 22 nm from May 2014. Fixed clocks without turbo suit fleets where steady behavior matters more than peak speed.

At 2.8 GHz the chip handles browsing, office suites and media playback with light multitasking. Two threads limit heavy parallel work, but SSD storage keeps the feel quick for everyday tasks. The 53 W rating fits tower and mid slim cases with stock cooling. System builders like the low price for schools and call centers.

Intel HD Graphics for 4th Generation processors drives up to three displays for office use. DDR3-1333 and DDR3L-1333 in two channels to 32 GB feed the cores. ECC support on business boards helps always on terminals. The mix is a basic Haswell socket with modern I/O for its year.

Socket and motherboard compatibility

The G1840 fits LGA 1150 on 8 series chipsets such as H81, B85, H87 and Z87, and on 9 series chipsets such as H97 and Z97. Haswell is native on both series, so boards accept it with the shipping BIOS in most cases. Check the maker CPU list for the exact board revision, since OEM boards sometimes lag on new SKUs.

Cooler mounting is 75 × 75 mm, shared with LGA 1155, 1151 and 1200. The CPU cooler compatibility by socket guide lists patterns. Processors for LGA 1151 do not fit despite similar holes. The Socket vs chipset: what decides whether a CPU works guide explains 8 versus 9 series choice.

H81 boards are the natural match for this price class, with two DIMM slots and basic PCIe. Z boards add lanes and ports but do not unlock this locked chip.

Memory, PCIe and cooling

Memory support is DDR3-1333 and DDR3L-1333 over two channels to 32 GB. Eight gigabytes in two sticks suits Windows with an SSD. Single channel works but trims graphics speed in video calls. Business boards with C220 series chipsets can use ECC where the board wires it.

The CPU gives 16 lanes of PCIe 3.0 for graphics or expansion. A single x16 slot carries a low profile card where needed. Most G1840 builds use integrated graphics and spend lanes on network or storage adapters. Chipset PCIe 2.0 lanes cover extra USB and SATA.

Cooling fits the stock Intel cooler for 53 W in boxed versions with PCG 2013C guidance. Tower cases run quietly at 2.8 GHz. Keep the 37.5 × 37.5 mm package area clear of tall VRM heatsinks when fitting aftermarket low profile units.

Upgrade paths

Within the socket the Intel Pentium G3250 at 3.2 GHz with 3 MB of cache is a direct speed step on the same boards and cooler. The Intel Core i3-4150 at 3.5 GHz adds Hyper-Threading with four threads for heavier office multitasking. Both share DDR3 memory, so only board support needs a check.

A move beyond Haswell needs a new board and memory, since DDR4 never fits LGA 1150. The G1840 covers entry fleets where two cores at 2.8 GHz meet the task list.