Intel Core i3-8100 socket: LGA 1151

What the Core i3-8100 is

The Core i3-8100 is a four core, four thread desktop processor from the 8th Gen Core family. It launched in October 2017 with a fixed 3.6 GHz at 65 W. Four Coffee Lake cores without Hyper-Threading cover office towers and first gaming builds where a steady clock beats burst behavior.

Six megabytes of Smart Cache support office multitasking across four threads. The fixed clock keeps behavior simple for shared PCs, since there is no Turbo table to learn. Four threads cover foreground work plus updates and security scans.

UHD Graphics 630 from 350 MHz to 1100 MHz drives office displays without a discrete card. The process is 14 nm. DDR4-2400 in two channels up to 64 GB suits quad core offices with SSDs.

Intel positions the 8100 as the entry quad core of Coffee Lake, against dual core 7th Gen i3 parts before it. The launch price of $117 made it a common pick for volume office towers. Locked multiplier keeps tuning out of scope.

Socket and motherboard compatibility

The 8100 fits LGA 1151 on revision 2 boards only. H310, B360 and H370 office boards pair it with DDR4 for quiet towers. Early Z370 may need a BIOS update for Coffee Lake, while B365 and Z390 accept it natively. Revision 1 boards with 100 or 200 series chipsets never support it.

The Socket vs chipset: what decides whether a CPU works guide explains why revision 2 needs 300 series boards. Board makers list the 8100 on nearly every 300 series CPU support page, which makes used board matching simple.

Single socket towers are the home. The unlocked Intel Core i3-8350K on the same socket adds clocks and overclocking where Z series boards allow it.

Memory, PCIe and cooling

DDR4-2400 in two channels up to 64 GB with up to 37.5 GB per sec of bandwidth gives smooth offices. Start with 8 GB in two modules for dual channel operation. Faster modules run at 2400 on this SKU unless the board allows more.

Sixteen PCIe 3.0 lanes from the CPU can hold a single graphics card or NVMe SSDs through board slots. Most office towers skip discrete cards and use integrated graphics for two or three displays. Gaming towers add an entry card later without changing the board.

Sixty five watt cooling from a stock tower cooler covers the fixed 3.6 GHz load. The 75 mm mounting pattern matches LGA 1155, 1150 and LGA 1200 coolers. Small towers should keep front intake clear for sustained loads.

Upgrade paths

On the same socket the step up is a six core Core i5 such as the 8400 or 8600K where threads help creation, keeping board and DDR4. A used Core i7-8700 adds Hyper-Threading for mixed work. All need 300 series boards with a BIOS that lists the part.

Moving past LGA 1151 means a new board and often new memory, since later sockets change pinouts. Office owners usually add an SSD and memory before replacing processors. The locked multiplier removes overclocking as a tuning path.