LGA 1150 supports Intel 4th-gen Haswell and 5th-gen Broadwell desktop CPUs plus Xeon E3 v3/v4, using DDR3 RAM and 8/9-series chipsets.
An LGA 1150 CPU compatibility guide has to clear up one thing first: this socket, also called Socket H3, accepts only Intel 4th-gen Haswell and 5th-gen Broadwell desktop processors along with Xeon E3 v3 and v4 server chips. DDR3 is the only memory option, and compatible motherboards use either 8-series or 9-series chipsets. If you are building or upgrading a system around this socket, knowing exactly what fits saves you from buying parts that simply will not work.
This guide covers every compatible CPU family, the chipsets that support them, real-world specs for the top models, installation steps, and the common compatibility traps that trip up builders.
LGA 1150 CPU Compatibility: Supported Processor Families
LGA 1150 supports two generations of Intel desktop processors: 4th-gen Haswell (released 2013–2014) and 5th-gen Broadwell (released 2015). This includes Core i7, i5, i3, Pentium, and Celeron models, plus Xeon E3 v3 and v4 workstation and server CPUs.
Haswell processors like the i7-4790K and i5-4690K are the most common and widely available on the used market. Broadwell models such as the i7-5770C and i5-5675C are rarer and require a 9-series motherboard with an updated BIOS. The socket uses a flip-chip land grid array with 1150 contacts and measures 37.5 × 37.5 mm. It replaced LGA 1155 and was itself replaced by LGA 1151 in 2015.
All LGA 1150 processors support PCI Express 3.0 with up to 16 configurable lanes, dual-channel DDR3 memory, and integrated graphics on most models. The L3 cache reaches up to 8 MB on higher-end chips.
Compatible Chipsets And Motherboards
Two chipset families support LGA 1150: the 8-series and the 9-series. Each has specific models with different feature sets.
8-series chipsets (H81, B85, H87, Q85, Q87, Z87) work with all Haswell processors. The Z87 chipset supports overclocking on unlocked K-series CPUs, while H81 and B85 target budget and business builds. The 9-series chipsets (H97, Z97) add support for Broadwell processors but only after a BIOS update. Z97 is the only 9-series chipset that supports overclocking. For server builds, the Intel C222, C224, and C226 chipsets support Xeon E3 v3 and v4 CPUs.
Heatsink compatibility is straightforward: the 75 mm square mounting hole pattern matches LGA 1155, 1156, 1151, and 1200 coolers, so an existing cooler from those sockets transfers directly.
Top Compatible CPU Models At A Glance
The table below shows the most popular LGA 1150 processors with their key specifications and current market prices.
| Model | Generation | Cores | Base Clock | Turbo | TDP | Price (Used) |
|---|---|---|---|---|---|---|
| i7-4790K | 4 (Devil’s Canyon) | 4 | 4.0 GHz | 4.4 GHz | 88W | $150–$220 |
| i7-4790 | 4 | 4 | 3.6 GHz | 4.0 GHz | 88W | $120–$180 |
| i5-4690K | 4 | 4 | 3.5 GHz | 3.9 GHz | 88W | $100–$150 |
| i5-4590 | 4 | 4 | 3.3 GHz | 3.7 GHz | 84W | $80–$120 |
| Celeron G1840 | 4 | 2 | 2.8 GHz | N/A | 54W | $40–$60 |
The i7-4790K remains the best all-around pick for this socket, offering 4.4 GHz turbo out of the box on a Z97 board with 32 GB of DDR3-1600 support and 8 MB of L3 cache. For budget builds, the i5-4590 delivers solid quad-core performance under $120. If you are deciding between models, our roundup of the best CPUs for LGA 1150 compares performance and value across the full lineup.
How To Install An LGA 1150 CPU Correctly
Installing a processor into an LGA 1150 motherboard follows the same basic procedure as other LGA sockets, but a few details matter.
- Power off the system and disconnect all cables.
- Remove the existing heatsink and fan assembly.
- Open the socket latch and lift the load plate. Remove the protective plastic cover if present.
- Align the CPU notches with the socket alignment keys. The chip drops into place with zero force—if it does not seat easily, the alignment is wrong.
- Close the load plate and secure the latch.
- Apply fresh thermal paste and attach the heatsink. The 75 mm square hole pattern matches LGA 1155, 1156, 1151, and 1200 coolers.
- Reconnect power and test the system. The screen should POST within a few seconds.
Intel’s official processor integration guide provides the full manufacturer procedure for LGA 1150 installation and is the reference for every step above.
What Compatibility Mistakes Should You Avoid?
A few compatibility errors show up repeatedly in LGA 1150 builds. Knowing them beforehand saves a return trip to the parts store.
| Mistake | Why It Fails | The Fix |
|---|---|---|
| Installing an LGA 1155 CPU | Same physical size (37.5 mm) but different pin layout—physically cannot fit | Use only LGA 1150 CPUs listed in this guide |
| Using DDR4 RAM | LGA 1150 only supports DDR3 up to 1600 MHz | Buy DDR3 DIMMs; no adapter exists for DDR4 |
| Assuming all 9-series boards support Broadwell | Only Z97 and H97 chipsets support 5th-gen CPUs after a BIOS update | Check the motherboard manufacturer’s CPU support list |
| Skipping a BIOS update | Older Z87 boards may not recognize i7-4790K without a firmware update | Update BIOS before installing a new CPU |
| Overclocking without adequate cooling | Devil’s Canyon CPUs draw more power at 4.4 GHz and need robust VRMs | Use an aftermarket cooler and a Z87 or Z97 board with good power delivery |
OS Compatibility And Windows 11 Support
LGA 1150 systems run Windows 7, Windows 8, Windows 10, and most Linux distributions without issue. Windows 10 is the most practical daily driver for these machines today.
Windows 11 is not officially supported on LGA 1150 hardware because it requires TPM 2.0, Secure Boot, and at least an 8th-gen Intel CPU. Workarounds exist, but Microsoft does not guarantee updates or driver support on unsupported hardware. Linux runs on any modern kernel with full support for LGA 1150 integrated graphics and chipset features.
FAQs
Can I use an LGA 1150 CPU in an LGA 1151 motherboard?
No. LGA 1150 and LGA 1151 have different pin arrangements and are mechanically incompatible. An LGA 1150 processor will not fit an LGA 1151 socket even though the physical size looks similar.
What is the best LGA 1150 CPU for gaming in 2025?
The i7-4790K remains the strongest gaming option for this socket, with four cores and 4.4 GHz turbo. It pairs well with a GTX 1660 or RX 580 for 1080p gaming in older titles.
Does LGA 1150 support NVMe SSDs?
Not natively. Most LGA 1150 motherboards lack M.2 slots with PCIe NVMe support. You can add an NVMe drive using a PCIe adapter card, but the system will not boot from it unless the motherboard BIOS supports NVMe boot, which is rare on 8-series and 9-series boards.
How much RAM can an LGA 1150 system handle?
Most Core i5 and i7 processors for LGA 1150 support up to 32 GB of DDR3 RAM. The i7-4790K officially supports 32 GB, though some boards with four DIMM slots accept up to 32 GB using 8 GB modules.
Is LGA 1150 still worth using in 2025?
For a budget office PC, media center, or retro gaming build, LGA 1150 offers good value at used prices. The i7-4790K costs around $150–$220 used and performs near entry-level modern CPUs for everyday tasks.
References & Sources
- Intel. “How to Identify and Install Intel Desktop Processors.” Official Intel integration guide for LGA 1150 and other sockets.