Specs, our gaming estimate and the graphics cards it pairs well with.
The Core i3-3240 is a E-tier gaming processor: #206 of 239 in our list, with 2 cores and 4 threads up to 3.4 GHz. At 1080p it can feed a card like the Radeon RX 6500 XT without a CPU bottleneck above 10%, and at 1440p a GeForce GTX 1070.
Updated October 3, 2026
Gaming index (Ryzen 7 9800X3D = 100) against the processors closest to it.
The Core i3-3240 scores 13 on our gaming index, where the Ryzen 7 9800X3D is 100. That puts it #206 of 239 processors we track, in E tier. It is slow by current standards, and recent games will often run well below what the graphics card can do.
It has 2 cores and 4 threads, boosting to 3.4 GHz. With 2 cores, the newest games will stutter or limit your frame rate, because they are built for six or more.
The Core i3-3240 uses the LGA1155 socket, so it fits motherboards with that socket. The fastest chips we track on the same socket are Core i7-3770K and Core i7-3770, which would be a drop-in upgrade without changing the motherboard.
It is rated at 55 W. That is low enough for small cases and quiet builds.
At 1080p, where the processor matters most, the Core i3-3240 can feed a card up to the Radeon RX 6500 XT before it starts to hold the card back by more than 10 percent. At 1440p the limit moves to the GeForce GTX 1070. At 4K, where the card does most of the work, it can keep up with the GeForce RTX 5050.
The Core i3-3240 is old or low power. Expect new games to run poorly, and look at an upgrade before you buy a new graphics card.
Graphics card performance index it keeps up with at each resolution.
The Core i3-3240 is a E-tier gaming processor: #206 of 239 in our list, with 2 cores and 4 threads up to 3.4 GHz. At 1080p it can feed a card like the Radeon RX 6500 XT without a CPU bottleneck above 10%, and at 1440p a GeForce GTX 1070.
At 1080p it can feed a card like the Radeon RX 6500 XT without a CPU bottleneck above 10%. At 1440p, a card like the GeForce GTX 1070 is a reasonable ceiling.