Specs, our gaming estimate and the graphics cards it pairs well with.
The Core i3-8100 is a D-tier gaming processor: #145 of 238 in our list, with 4 cores and 4 threads up to 3.6 GHz. At 1080p it can feed a card like the GeForce RTX 5050 Laptop without a CPU bottleneck above 10%, and at 1440p a Radeon RX 7600 XT.
Updated October 3, 2026
Gaming index (Ryzen 7 9800X3D = 100) against the processors closest to it.
The Core i3-8100 scores 25 on our gaming index, where the Ryzen 7 9800X3D is 100. That puts it #145 of 238 processors we track, in D tier. It is an older or entry level chip. Fine for light games and mid-range cards, but a fast graphics card will often wait on it.
It has 4 cores and 4 threads, boosting to 3.6 GHz. With 4 cores, the newest games will stutter or limit your frame rate, because they are built for six or more.
The Core i3-8100 uses the LGA1151 socket, so it fits motherboards with that socket. The fastest chips we track on the same socket are Core i9-9900K and Core i7-9700K, which would be a drop-in upgrade without changing the motherboard.
It is rated at 65 W. That is easy to cool; a decent tower cooler is enough, and the box cooler works on some models.
At 1080p, where the processor matters most, the Core i3-8100 can feed a card up to the GeForce RTX 5050 Laptop before it starts to hold the card back by more than 10 percent. At 1440p the limit moves to the Radeon RX 7600 XT. At 4K, where the card does most of the work, it can keep up with the Radeon RX 7800 XT. The full list of graphics cards for the Core i3-8100 has the options for each resolution.
The Core i3-8100 is fine for older games, light titles and a modest card, but it will hold back a newer mid-range card.
Graphics card performance index it keeps up with at each resolution.
The Core i3-8100 is a D-tier gaming processor: #145 of 238 in our list, with 4 cores and 4 threads up to 3.6 GHz. At 1080p it can feed a card like the GeForce RTX 5050 Laptop without a CPU bottleneck above 10%, and at 1440p a Radeon RX 7600 XT.
At 1080p it can feed a card like the GeForce RTX 5050 Laptop without a CPU bottleneck above 10%. At 1440p, a card like the Radeon RX 7600 XT is a reasonable ceiling.