Intel Celeron G1840T socket: LGA 1150

What the Celeron G1840T is

The Celeron G1840T is a low power Haswell dual core for small office desktops on LGA 1150. Intel set two cores and two threads at a fixed 2.5 GHz with 2 MB of cache. Power is 35 W on 22 nm from May 2014. No turbo keeps clocks steady for thin cases and always on use.

Two cores cover web apps, documents and point of sale software with modest background tools. Fixed frequency simplifies thermal planning in slim OEM bodies. The 35 W rating allows small coolers and compact power supplies. Buyers pick the T suffix where a 53 W Celeron would stress airflow.

Intel HD Graphics for 4th Generation processors runs from 200 MHz to 1.05 GHz and drives office monitors over eDP, DisplayPort, HDMI, DVI and VGA. DDR3-1333 and DDR3L-1333 over two channels to 32 GB feed the chip. The value is a low power Haswell socket with ECC support on business boards.

Socket and motherboard compatibility

The G1840T fits LGA 1150 on 8 series boards such as H81, B85, H87 and Z87, plus 9 series boards such as H97 and Z97. Haswell support is native across both series, so no BIOS step is needed for this codename. Makers list T SKUs in CPU support tables, so check the exact board entry before swapping a standard power chip for a T in a used slim PC.

The 75 × 75 mm cooler mount matches LGA 1155, 1151 and 1200, so many tower and low profile coolers fit. A move to LGA 1151 is not possible, since processors never cross sockets despite similar mounts. The Socket vs chipset: what decides whether a CPU works guide covers 8 and 9 series pairing in more detail.

Low power BIOS profiles suit the 35 W limit in slim cases. Pair the chip with a board that lists 35 W T support for stable fan curves.

Memory, PCIe and cooling

Memory is DDR3-1333 and DDR3L-1333 across two channels to 32 GB. Four gigabytes covers thin clients, while eight gigabytes suits office fleets with SSDs. Paired sticks help integrated graphics in video calls. ECC memory is supported with business chipsets and boards that wire it.

PCIe arrives as 16 lanes of PCIe 3.0 from the CPU for a single slot or an adapter. Most T builds stay integrated to protect thermals. A low profile network or serial card fits where the chassis allows. Chipset lanes add SATA and USB for drives and peripherals.

Cooling uses the LGA 1150 75 mm pattern from the CPU cooler compatibility by socket guide. Low height 35 W coolers run quietly in small cases. Keep intakes clear, since slim bodies recycle warm air quickly at 2.5 GHz.

Upgrade paths

On the same socket the Intel Core i3-4150T at 2.9 GHz with four threads is the next office step where threads help, sharing boards and 35 W cooling. The Intel Pentium G3250T at 2.8 GHz with 3 MB of cache is a nearby low power option with slightly higher clocks. Both keep the board and memory, so only BIOS support and thermals need checks.

A larger jump means a newer socket with new board and memory. The G1840T covers compact Haswell fleets where 35 W is the ceiling and two cores are enough.