Intel Core i7-4790S
Intel Core i7-4790S: A Comprehensive Review of an Outdated Yet Relevant Processor
April 2025
1. Key Specifications: Architecture, Performance, and Key Features
Code Name and Manufacturing Process
The Intel Core i7-4790S, released in 2014, is based on the Haswell microarchitecture and manufactured using a 22nm process technology. This allowed for reduced power consumption (TDP 65W) while maintaining high performance for its time.
Cores, Threads, and Cache
- 4 Cores / 8 Threads thanks to Hyper-Threading.
- Base Frequency: 3.2 GHz, with a maximum Turbo Boost of 4.0 GHz.
- L3 Cache: 8 MB, which speeds up the handling of multi-threaded tasks.
Integrated Graphics
The integrated Intel HD 4600 GPU supports DirectX 11.1 and 4K displays via HDMI 1.4 or DisplayPort. It's sufficient for light tasks (office work, 1080p video), but it struggles with demanding games like Minecraft or Dota 2 at low settings.
Performance
- Geekbench 6: 1239 (Single-Core), 3872 (Multi-Core).
In comparison, the modern budget Intel Core i3-13100 (2023) scores around 2400/8800. This indicates that the i7-4790S is only suitable for basic tasks.
Key Features
- Support for Intel VT-x for virtualization.
- Power-saving technologies (e.g., Enhanced SpeedStep).
2. Compatible Motherboards: Sockets and Chipsets
LGA1150 Socket
The processor requires motherboards with an LGA1150 socket. Popular chipsets include:
- H81/B85: Budget boards without RAID or overclocking support.
- Z87/Z97: For enthusiasts (support for SLI/CrossFire, memory overclocking).
Example Models
- ASUS H81M-K: Basic board priced at $60-70 (2025 - remaining new units).
- Gigabyte Z97X-Gaming 3: Gaming motherboard with USB 3.0 and SATA 6 Gb/s.
Selection Features
- Ensure that the BIOS is updated to the latest version (relevant for boards from 2014-2015).
- Check for the necessary ports (e.g., HDMI for integrated graphics).
3. Supported Memory
Memory Type
The processor only works with DDR3 (does not support DDR4/DDR5).
- Max Capacity: 32 GB (depends on the motherboard).
- Frequencies: Up to 1600 MHz (in XMP mode - up to 1866-2133 MHz on Z87/Z97 chipsets).
Tip
Use dual-channel mode to enhance performance (2 modules of 8 GB instead of one 16 GB module).
4. Power Supply Recommendations
Power Calculation
- Processor TDP: 65W.
- With integrated graphics: A PSU of 300-400W (e.g., Corsair CX450).
- With a discrete graphics card (e.g., GTX 1650): A PSU of 450-500W (EVGA 500 BR).
Important
Older PSUs may not have PCIe 8-pin connectors for modern graphics cards – check compatibility.
5. Pros and Cons
Pros
- Low power consumption (suitable for HTPC or office PCs).
- Reliability and a time-tested architecture.
- Integrated graphics for basic tasks.
Cons
- No support for DDR4, PCIe 4.0, USB 3.1.
- Limited performance in modern games and applications.
- Challenges with upgrading (new components are incompatible).
6. Use Cases
Office and Multimedia
- Working with documents, browsers, YouTube 1080p.
- Watching movies via HDMI (4K@30Hz).
Light Gaming
- Games up to 2015: GTA V on medium settings (with GTX 750 Ti).
- Emulators (e.g., PS2 via PCSX2).
Server Tasks
- Home NAS or media server (thanks to low TDP).
7. Comparison with Competitors
AMD FX-8350 (2012)
- 8 cores but weaker in single-threaded tasks (Geekbench 6 Single-Core ~800).
- Higher power consumption (125W).
Intel Core i5-10400 (2020)
- 6 cores/12 threads, Geekbench 6 ~1800/6000.
- Support for DDR4 and PCIe 3.0.
Conclusion
The i7-4790S falls behind even budget modern CPUs but still holds its own in used market prices ($30-50 compared to $120 for i5-10400).
8. Practical Assembly Tips
For an Office PC
- Motherboard: ASUS H81M-K + 16 GB DDR3.
- Storage: 256 GB SSD (Kingston A400).
- PSU: 400W (without a graphics card).
For a Media Center
- Case with passive cooling (e.g., Silverstone ML05).
- Wi-Fi adapter with 5 GHz support.
Where to Buy
New components are almost unavailable. Look for leftovers on Amazon or at local stores. The main source is the used market (eBay, local ads).
9. Final Conclusion: Who is the i7-4790S Suitable For?
This processor is suitable for:
- Owners of old PCs looking to extend the life of their system.
- Enthusiasts building budget media centers or NAS.
- Offices where high performance is not required.
Why in 2025?
Affordability (used at $30), reliability, and sufficient power for basic tasks. However, for gaming, video editing, or AI work, it’s better to choose modern CPUs.
If you find this processor in an old computer, don’t rush to throw it away. With the right setup, it can serve you for several more years!