Intel Core i5-7400 socket: LGA 1151
The Intel Core i5-7400 uses the LGA 1151 socket on revision 1 boards with 100 and 200 series chipsets. It is a quad core chip at 65 W with boost to 3.5 GHz.
- Socket
- LGA 1151 (revision 1)
- Launched
- January 2017
- Cores and threads
- 4 and 4
- Base power
- 65 W
- Codename
- Kaby Lake
- Segment
- Desktop
- Family
- Intel Core i5
- Clocks
- 3.0 / 3.5 GHz
Intel Core i5-7400 specifications
| Cores | 4 |
|---|---|
| Threads | 4 |
| Core architecture | Kaby Lake on 14 nm |
| Clocks | 3.0 GHz base, up to 3.5 GHz Turbo |
| Cache | 6 MB Intel Smart Cache |
| Processor base power (TDP) | 65 W |
| Manufacturing process | 14 nm |
| Memory support | DDR4-2133/2400 and DDR3L 1333/1600, two channels, up to 64 GB |
| PCI Express | PCIe 3.0, 16 lanes from the CPU |
| Integrated graphics | Intel HD Graphics 630 (350 MHz base, up to 1000 MHz) |
| Multiplier | Locked |
| Package | FCLGA1151 (37.5 × 37.5 mm) |
Motherboard and chipset compatibility
Intel Core i5-7400 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 | Not supported |
| 300 series: H310, B360, H370, Q370, Z370 | Z370, H370, B360, H310, Q370 | Not supported |
| 200 series | Z270, H270, B250, Q270, Q250 | Works out of the box |
| 100 series | Z170, H170, B150, H110, Q170, Q150 | Needs a BIOS update Needs a BIOS update before a 7th Gen processor will start. |
Board makers publish a CPU support list for every model. Check it for your exact board before buying. Chipset details for LGA 1151.
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 i5-7400 is
The Core i5-7400 is a four core, four thread desktop processor from Kaby Lake. It launched in January 2017 with a 3.0 GHz base and up to 3.5 GHz Turbo at 65 W. Four cores cover office towers and entry creation where multitasking matters more than high clocks.
Six megabytes of Smart Cache feed office suites with background updates. The 3.0 GHz base sustains multitasking well, while 3.5 GHz burst lifts interactive work. Sixty five watts fit stock tower cooling.
HD Graphics 630 from 350 MHz to 1000 MHz drives office monitors with 4K output. Hardware decode keeps video smooth. Four cores handle multitasking without Hyper-Threading.
On 14 nm the 7400 was the entry i5 of Kaby Lake above i3 threads. Intel listed it near $182 tray pricing. Locked multiplier keeps it a stock part.
Socket and motherboard compatibility
The 7400 fits LGA 1151 revision 1 only. B250 and H270 accept it natively, while H110 may need a BIOS update. Three hundred series boards never support it.
The Socket vs chipset: what decides whether a CPU works guide explains board generations. Office B250 towers pair it with DDR4 for volume fleets.
The Core i5-7500 on the same socket adds clocks. The low power 7400T is the 35 W alternative for small cases.
Memory, PCIe and cooling
DDR4-2133/2400 or DDR3L up to 64 GB in two channels is the memory support. Dual channel DDR4-2400 helps office pace and graphics. Two modules are standard for fleets.
Sixteen PCIe 3.0 lanes support a single graphics card or NVMe storage. Office towers use integrated output for two displays. Entry gaming towers add a discrete card later.
Sixty five watts work with stock coolers on the 75 mm pattern shared with LGA 1155, 1150 and LGA 1200.
Upgrade paths
On the same socket Core i5-7600 adds clocks, while Core i7-7700 adds threads. Both reuse board and DDR4.
Past revision 1 a new board is required. SSD upgrades help office fleets most.
Frequently asked questions
What socket does the Core i5-7400 use?
It uses LGA 1151 revision 1 on 100 and 200 series boards.
How many cores does the i5-7400 have?
Four cores with four threads at 3.0 GHz base with up to 3.5 GHz Turbo.
What graphics are in the i5-7400?
Intel HD Graphics 630 from 350 MHz to 1000 MHz.
When did the i5-7400 launch?
January 2017 with the Kaby Lake desktop lineup.
Sources and verification
- Intel Core i5-7400 specifications (Intel)
- 7th Gen Core desktop spec update with 7400 graphics (Intel)
Facts last checked against these sources on . Page last edited on .