Intel Core i7-8700K Desktop Processor: specs, socket and who it suits

The Intel Core i7-8700K is a desktop processor from Intel's eighth-generation Core family. It has six cores, handles 12 threads and has an unlocked multiplier for overclocking. It is a part for building or upgrading a desktop PC, and it only fits certain motherboards. This page explains what the listed specs mean.

Six cores, twelve threads

The processor has 6 cores and 12 threads. A core is an independent processing unit, and Intel's hyper-threading lets each core handle two streams of work at once, which is where the 12 threads come from. In general, more cores and threads help with tasks that can be split up, such as video editing, rendering, running several programs at once and streaming while gaming. Intel's description mentions live-streaming or recording, editing and posting gameplay highlights.

Clock speeds and cache

The base frequency is 3.70 GHz, and the maximum turbo frequency is up to 4.70 GHz. Turbo is a boost the chip applies automatically when conditions such as temperature and power allow, typically on a few cores at a time. It has 12 MB of cache, a small block of very fast memory on the chip that holds frequently used data. The listed power draw is 95W, which affects the cooler and power supply you choose.

Unlocked for overclocking

The "K" in the name marks an unlocked processor, which lets you raise clock speeds beyond the stock settings if your motherboard and cooling allow it. Overclocking adds heat and power use. Note that the listing describes the processor but doesn't mention a cooler, and unlocked Intel retail processors of this type are generally sold without one, so confirm what is in the box with the seller.

Built-in graphics

It includes Intel UHD Graphics 630, so it can drive a display without a separate graphics card. That is handy for office work, video playback and light use. For modern gaming, most people add a dedicated graphics card.

Socket and motherboard compatibility

This is the key point. The processor uses the LGA1151 socket and works only with motherboards based on Intel 300 Series chipsets. An older 100 or 200 series LGA1151 board looks similar, but the listing says it is compatible only with 300 Series boards. The memory type listed is DDR4, and Intel Optane Memory is supported, a cache technology that could speed up a hard drive.

Who it suits

It suits people building or repairing an LGA1151 desktop who want a six-core chip, as well as enthusiasts who like to tune their system. It also fits someone upgrading within an existing 300 Series motherboard. Anyone starting a new build today would typically weigh it against newer processor generations, which need different sockets and memory.

What to check before you buy

• Motherboard: confirm the board uses an Intel 300 Series chipset, and check the maker's compatibility list.
• Cooling: at 95W, plan for a capable cooler, and check whether one comes in the box.
• Memory: it uses DDR4, so match your memory to the board.
• Graphics: the integrated graphics are fine for everyday use, but gaming usually needs a dedicated card.
• Power supply: make sure the supply and the board's power delivery suit an unlocked chip if you overclock.

The short version

• A six-core, 12-thread Intel Core i7-8700K for LGA1151 desktops.
• 3.70 GHz base and up to 4.70 GHz turbo, with 12 MB of cache and a 95W power figure.
• Unlocked for overclocking; Intel UHD Graphics 630 built in.
• Works only with Intel 300 Series chipset motherboards; DDR4 memory.
• Check the cooler and motherboard before you order.

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