Intel Core i7-4790S socket: LGA 1150
The Intel Core i7-4790S uses the LGA 1150 socket. It is a low power quad Haswell part with eight threads at 3.2 GHz with turbo to 4.0 GHz and 65 W with HD Graphics 4600.
- Socket
- LGA 1150
- Launched
- May 2014
- Cores and threads
- 4 and 8
- Base power
- 65 W
- Codename
- Haswell
- Segment
- Desktop
- Family
- Intel Core i7
- Clocks
- 3.2 / 4.0 GHz
Intel Core i7-4790S specifications
| Cores | 4 |
|---|---|
| Threads | 8 |
| Core architecture | Haswell cores on 22 nm |
| Clocks | 3.2 GHz base, up to 4.0 GHz turbo |
| Cache | 8 MB Smart Cache |
| Processor base power (TDP) | 65 W |
| Manufacturing process | 22 nm |
| Memory support | DDR3-1333 and 1600, DDR3L-1333 and 1600, two channels, up to 32 GB |
| PCI Express | PCIe 3.0, 16 lanes |
| Integrated graphics | Intel HD Graphics 4600 (350 MHz to 1.2 GHz) |
| Multiplier | Locked |
| Package | FCLGA1150 (37.5 × 37.5 mm) |
Motherboard and chipset compatibility
Intel Core i7-4790S needs a motherboard with a LGA 1150 socket. The table shows which chipset series accept it.
| Series | Chipsets | Support |
|---|---|---|
| 9 series | Z97, H97 | Works out of the box |
| 8 series | Z87, H87, Q87, Q85, B85, H81 | Works out of the box |
Board makers publish a CPU support list for every model. Check it for your exact board before buying. Chipset details for LGA 1150.
LGA 1150 at a glance
| Type | LGA, 1,150 contacts |
|---|---|
| Package size | 37.5 × 37.5 mm |
| Introduced | June 2013 |
| Memory | DDR3 and DDR3L |
| Cooler mounting holes | 75 × 75 mm |
What the Core i7-4790S is
The Core i7-4790S is an efficient Haswell i7 for compact performance desktops on LGA 1150. Intel set four cores and eight threads at 3.2 GHz base with turbo to 4.0 GHz. Eight megabytes of Smart Cache serve creation and multitasking. Power is 65 W on 22 nm from May 2014. It keeps the 4.0 GHz ceiling of the 84 W i7-4790 while trimming sustained power for smaller coolers.
High turbo preserves single thread bursts where users feel speed. Lower base holds heat inside 65 W during all core loads. Eight threads handle builds, edits and virtual machines beside office apps. An SSD completes the feel for daily work. Builders pick the S where a standard 84 W i7 would stress slim airflow.
HD Graphics 4600 from 350 MHz to 1.2 GHz drives office monitors. DDR3-1333 and 1600 plus DDR3L variants across two channels to 32 GB feed cores and graphics at up to 25.6 GB/s. It is a Haswell socket for buyers who want i7 threads at 65 W.
Socket and motherboard compatibility
The 4790S fits LGA 1150 on 8 series boards such as H81, B85, H87 and Z87, and on 9 series boards such as H97 and Z97. Haswell is native on both series, so boards accept it with standard firmware. Check slim OEM CPU lists that gate S support by BIOS.
The 75 × 75 mm mount suits low profile 65 W coolers. The CPU cooler compatibility by socket guide lists fits. Chips for LGA 1151 never fit. The Socket vs chipset: what decides whether a CPU works guide explains series tiers.
H81 and B85 compact boards are the hosts with 65 W tables. Set power limits for quiet bursts in small cases.
Memory, PCIe and cooling
DDR3-1333 and 1600 with DDR3L-1333 and 1600 in dual channel to 32 GB is the memory spec. Sixteen gigabytes suits creation with an SSD. Two equal sticks help HD 4600 in video work. ECC is not supported on this desktop i7.
Sixteen PCIe 3.0 lanes from the CPU feed one graphics slot or adapters. Most 4790S offices keep integrated video. Chipset lanes add SATA and USB. Nine series boards add M.2 adapter paths where listed.
Stock 65 W cooling holds 3.2 GHz with bursts to 4.0 GHz in ventilated cases. The 37.5 × 37.5 mm FCLGA1150 package fits standard mounts. Keep intakes clear for repeat turbo.
Upgrade paths
On the same socket the Intel Core i7-4790 at 3.6 GHz to 4.0 GHz is the standard power twin with higher base on the same boards. The Intel Core i7-4790K at 4.0 GHz to 4.4 GHz unlocked is the tuning step for Z boards with stronger cooling. Both reuse DDR3.
DDR4 needs a new socket and board. The 4790S covers efficient Haswell desks where i7 threads at 65 W are ideal.
Frequently asked questions
What socket does the Core i7-4790S use?
It uses LGA 1150 on 8 and 9 series boards.
How many cores does the Core i7-4790S have?
Four cores and eight threads at 3.2 GHz base with turbo to 4.0 GHz.
Which graphics does the Core i7-4790S include?
Intel HD Graphics 4600 from 350 MHz to 1.2 GHz.
What is the TDP of the Core i7-4790S?
65 W for efficient towers.
Sources and verification
- Intel Core i7-4790S specifications (Intel, 8M Cache up to 4.00 GHz 65W)
- 4th Generation Intel Core i7 Processors (Intel, 4790S Q2 14 HD4600)
- LGA 1150 (Wikipedia, chipsets and memory)
Facts last checked against these sources on . Page last edited on .