Intel Core i5-9600KF socket: LGA 1151
The Intel Core i5-9600KF uses the LGA 1151 socket on revision 2 boards. It matches the 6-core 9600K in every way except graphics, so a separate card is mandatory on 300 series boards.
- Socket
- LGA 1151
- Launched
- January 2019
- Cores and threads
- 6 and 6
- Base power
- 95 W
- Codename
- Coffee Lake Refresh
- Segment
- Desktop
- Family
- Intel Core i5
- Clocks
- 3.7 / 4.6 GHz
Intel Core i5-9600KF specifications
| Cores | 6 |
|---|---|
| Threads | 6 (no Hyper-Threading) |
| Core architecture | Skylake based cores on 14 nm |
| Clocks | 3.7 GHz base, up to 4.6 GHz (Turbo Boost 2.0) |
| Cache | 9 MB Intel Smart Cache (L3) |
| Processor base power (TDP) | 95 W |
| Manufacturing process | 14 nm |
| Memory support | DDR4 up to 2666 MT/s, two channels, up to 128 GB |
| PCI Express | 16 lanes from the CPU, PCIe 3.0 |
| Integrated graphics | None (the F suffix means no graphics, a separate card is required) |
| Multiplier | Unlocked (KF series) |
| Package | FCLGA1151 |
| Cooler in the box | None |
| ECC memory | Not supported |
Motherboard and chipset compatibility
Intel Core i5-9600KF needs a motherboard with a LGA 1151 socket. The table shows which chipset series accept it.
| Series | Chipsets | Support |
|---|---|---|
| 300 series: B365 and Z390 | Z390, B365 | Works out of the box |
| 300 series: H310, B360, H370, Q370, Z370 | Z370, H370, B360, H310, Q370 | Needs a BIOS update Needs a BIOS update before a 9th Gen processor will start. Check the board maker's CPU support list. |
| 200 series | Z270, H270, B250, Q270, Q250 | Not supported |
| 100 series | Z170, H170, B150, H110, Q170, Q150 | Not supported |
Board makers publish a CPU support list for every model. Check it for your exact board before buying. Chipset details for LGA 1151.
Recommended GPU pairing
| Recommended tier | Mid-range 1080p |
|---|---|
| Example GPUs | GeForce GTX 1660 Ti, Radeon RX 5600 XT |
| Target resolution | 1080p high settings |
Six physical cores with boost to 4.6 GHz, 16 PCIe 3.0 lanes and DDR4 line up with mid-range 1080p cards from early 2019. A faster card still works and the balance shifts with game, settings and resolution.
This is a rough match for a new build at the stated resolution, not a limit. A faster card still works and helps at higher resolutions or in games that load the GPU more than the CPU. A slower card is fine for lighter games and office use. The exact balance shifts with the game, the settings and the resolution, so no percentage is given.
LGA 1151 at a glance
| Type | LGA, 1,151 contacts |
|---|---|
| Package size | 37.5 × 37.5 mm |
| Introduced | August 2015 |
| Memory | DDR4 on most boards (some early boards use DDR3L). DDR4 only on the second revision |
| Cooler mounting holes | 75 × 75 mm |
What the Core i5-9600KF is
The Core i5-9600KF is a six core, six thread processor that Intel released in early 2019 with the 9th Gen desktop range. Its cores run 3.7 GHz base to 4.6 GHz turbo with Turbo Boost 2.0. Cache is 9 MB of shared L3.
The chip equals the 9600K in compute and differs in two cuts: no Hyper-Threading and no integrated GPU, so all display output comes from a discrete card. The TDP is 95 W on the 14 nm process.
The multiplier is unlocked. On memory tuning, Z390 and Z370 boards accept XMP kits past DDR4-2666 while H-series and B-series boards hold narrower ranges, so the board decides how far a kit runs.
Socket and motherboard compatibility
The 9600KF fits the LGA 1151 socket on revision 2 boards only. Z390 and B365 boards accept it with the shipping BIOS. Z370, H370, B360, H310 and Q370 boards need a BIOS update carrying 9th Gen support. Revision 1 boards never support it.
Every boot needs a discrete card, since the board's display connectors stay inactive. Multiplier overclocking needs a Z-series board, while B-series boards run stock clocks with memory tuning.
Confirm the minimum BIOS version in the maker's CPU support list. A board with USB BIOS flashback updates without a working chip installed.
Memory, PCIe and cooling
The memory controller supports DDR4 up to 2666 MT/s officially. Two channels carry up to 128 GB. Streaming builds that leaned on Quick Sync should note the missing encoder and choose a discrete card with a capable media block.
The CPU supplies 16 PCIe 3.0 lanes for the discrete graphics card. The discrete card owns all display output.
Budget cooling around the 95 W base figure alone will throttle under boost. Size for high peaks with a capable tower cooler on the 75 mm LGA 1151 pattern. The CPU cooler compatibility by socket guide covers aftermarket brackets.
No threading, no graphics, revision 2 only
The KF combines the 9th Gen i5's missing threading with missing graphics for the lowest-cost unlocked six cores of the generation. Games of the era rarely missed either cut, while rendering and encoding did.
The LGA 1151 revision split still applies: revision 2 boards only, never 100 or 200 series. Without onboard graphics, a failed boot shows nothing on screen, so keep a known-good discrete card handy until the build proves stable. B360 boards pair low cost with locked memory behavior that suits the chip, while Z390 adds multiplier overclocking and wider XMP support for faster kits today on boards that allow it.
Upgrade paths
Against the Intel Core i5-9600K, the KF performs identically wherever a discrete card is fitted. Against the Intel Core i7-9700K, it trades two cores for savings on the same socket.
Moving to LGA 1200 needs a new board while keeping DDR4. The 9600KF fits a gaming tower that will always include a discrete card.
Frequently asked questions
What socket does the Intel Core i5-9600KF use?
It uses LGA 1151 on revision 2 boards with 300 series chipsets, written FCLGA1151 in Intel's documents. A discrete graphics card is required.
Does the 9600KF have Hyper-Threading?
No. Like the K, the KF has no Hyper-Threading, so 6 cores give 6 threads.
Does the 9600KF run in a Z270 motherboard?
No. Z270 and other 100 and 200 series boards are revision 1 and never support 9th Gen processors.
What memory speed does the 9600KF support?
Officially up to DDR4-2666. Faster kits run through XMP profiles, which count as overclocking.
Does the 9600KF come with a cooler?
No. KF-series processors ship without a cooler.
Sources and verification
Facts last checked against these sources on . Page last edited on .