Intel Core i7-4790K Processor (8M Cache, up to 4.40 GHz) BX80646I74790K
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AI Verdict
This is a legendary but now-ancient gaming CPU for budget builders who already own a compatible LGA 1150 motherboard and need a drop-in upgrade.
This CPU is a strong performer for its age, but it's locked to the obsolete LGA 1150 platform. It only makes sense if you can get it for cheap and are plugging it into a compatible Z97 motherboard you already own. For a new build, its use of DDR3 memory and limited core count make it a poor choice against modern budget CPUs.
If this isn't enough, your next step is a full platform upgrade; look for a modern CPU with at least 6 cores on a socket that supports DDR5 memory.
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Pros
- High 4.0 GHz base and 4.4 GHz boost clock speeds were top-tier for its time.
- Unlocked 'K' designation allows for significant overclocking, with users often hitting 4.6-4.7 GHz.
- Hyper-Threading provides 8 threads, which helps it remain competent for multitasking and streaming older games.
- Still capable of running many esports and older AAA titles at 60 FPS or more at 1080p.
- Uses cheaper DDR3 RAM, making it a budget-friendly platform if you have the parts.
Cons
- The LGA 1150 socket is a dead-end platform with no upgrade path to modern CPUs.
- Relies on older DDR3 memory, which is a significant bandwidth bottleneck compared to DDR4/DDR5.
- Can run very hot, with many users reporting temperatures hitting 90-100°C under load without a high-end cooler or undervolting.
- Lacks support for modern instruction sets like AVX-512 and has only 16 PCIe 3.0 lanes.
- Its 4-core design struggles with modern, CPU-intensive open-world games, leading to FPS drops.
Dimension Scores
Its high 4.4 GHz boost clock keeps it surprisingly relevant for tasks that rely on one core, but it's easily beaten by modern budget CPUs.
Four cores and eight threads is below average by today's standards, where 6-core CPUs are the new baseline for gaming.
The 22nm process and high power draw under load, especially when overclocked, make it very inefficient compared to modern processors.
The LGA 1150 socket is a dead end; there are no further CPU upgrades and it's limited to PCIe 3.0 and DDR3 memory.
Best For
- Giving a final, powerful upgrade to an existing PC with a Z87 or Z97 motherboard.
- Building a retro gaming rig specifically for titles from the 2010-2018 era.
- A budget 1080p gaming setup for esports titles like Counter-Strike 2 or Valorant.
- A home server or media PC where power efficiency isn't the top priority.
Not Recommended For
- Building a new PC from scratch in 2026 and beyond.
- High-refresh-rate gaming (144Hz+) in modern titles.
- Pairing with a high-end modern graphics card like an RTX 40-series, which it will severely bottleneck.
Watch Out For
- Runs extremely hot out of the box; many motherboards supply too much voltage by default, requiring manual undervolting in the BIOS or with Intel's XTU software to avoid hitting 100°C.
- The stock Intel cooler is completely inadequate; you absolutely need a substantial aftermarket air or liquid cooler to handle its heat output, especially when overclocking.
- The thermal interface material (TIM) used by Intel under the heat spreader degrades over time, leading to even worse temperatures; many enthusiasts resort to 'delidding' the CPU to replace it.
- Finding a new, reliable Z97 motherboard is nearly impossible; you'll likely be buying used, which carries its own risks.
- Some older Z87 or even early Z97 motherboards may require a BIOS update to recognize the 4790K, which is a problem if you don't have an older compatible CPU to perform the update.
Full Specifications
| ASIN | B00KPRWAX8 |
| Brand | Intel |
| CPU Model | Core i7 |
| CPU Speed | 4.1 GHz |
| CPU Socket | LGA 1150 |
| Item Weight | 11.2 ounces |
| Manufacturer | Intel |
| CPU Manufacturer | Intel |
| Item model number | BX80646I74790K |
| Product Dimensions | 4.6 x 4.4 x 3.1 inches |
| Is Discontinued By Manufacturer | No |
What Buyers Say
The most surprising thing about the i7-4790K is just how well it holds on years after its release. For anyone dropping it into an old Z97 board, it feels like a massive leap, especially coming from an old i5. The big catch is the heat; this thing runs hot, and many users find themselves in forums trying to figure out why they're hitting 90+ degrees. The answer is almost always that the motherboard's auto-voltage is too aggressive, and you need a beefy cooler. Once you tame the temperatures, it's a reliable chip that still delivers a solid 1080p gaming experience in a lot of titles.
“i cant believe this old beast still shreds, i dropped it in my dusty z97 board and it brought my gtx 1080 back to life for 1080p gaming, just make sure you get a monster cooler cause this thing runs like a furnace!!”
Common Praise
- Still provides a smooth 1080p/60fps experience in many popular and older games.
- Overclocks easily to 4.6GHz or 4.7GHz on a good Z97 motherboard with proper cooling.
- Hyper-Threading makes a noticeable difference over older i5s for multitasking while gaming.
- Extremely reliable, with many users reporting their systems have been running for 5+ years without a single issue.
- A fantastic, budget-friendly way to get the absolute maximum performance out of an old LGA 1150 system.
Common Complaints
- Runs dangerously hot without a high-end aftermarket cooler and manual voltage tweaks.
- The underlying LGA 1150 platform is obsolete, with no support for DDR4/DDR5 RAM or PCIe 4.0.
- Struggles and causes frame drops in modern CPU-heavy games that utilize more than 4 cores.
- Power consumption is high, especially when overclocked, leading to more heat and a higher electricity bill.
- Finding a new Z97 motherboard is nearly impossible, forcing buyers into the used market.
Ownership Tips
- After a few years, you might notice temperatures creeping up, which is a sign the original thermal paste under the lid is failing and it may need to be delidded.
- You'll quickly find the CPU at 100% utilization in newer games, which becomes the main bottleneck for smoother frame rates, even with a decent GPU.
- While it officially supports Windows 11, the lack of modern security features and instruction sets might cause compatibility issues down the line.
- The performance gain from overclocking memory from 1600MHz to 2133MHz or 2400MHz DDR3 is surprisingly noticeable, especially in reducing stutters.
Frequently Asked Questions
Does the i7-4790K come with a stock cooler?
No, the unlocked 'K' series processors like this one do not typically come with a cooler. You will need to purchase a capable aftermarket cooler, as this CPU runs hot.
What motherboard do I need for the i7-4790K?
You need a motherboard with an LGA 1150 socket. To take advantage of its overclocking capabilities, a Z97 chipset motherboard is highly recommended, though Z87 boards also work but may need a BIOS update.
Can the i7-4790K run games in 2026?
Yes, it can still run many games, especially older titles and esports games, quite well at 1080p. However, it will struggle and may cause stuttering in the latest CPU-heavy open-world games.
Why is my i7-4790K running so hot?
These chips are known to run hot due to high default voltages from motherboards and aging internal thermal paste. Ensure you have a good cooler and consider manually setting a lower, stable voltage in your BIOS.
Is it worth upgrading from an i5 on the same platform to this i7-4790K?
Yes, if you have an older i5 (like the i5-4690K) on a Z97 motherboard, upgrading to the i7-4790K is often the most powerful and cost-effective final upgrade for that system, giving you Hyper-Threading for better multitasking and gaming performance.
What kind of RAM does the i7-4790K use?
It uses dual-channel DDR3 memory, officially up to 1600 MT/s, but can often run faster with overclocking on a Z-series motherboard.
Buying Guide
You're not just buying a CPU, you're buying into a platform that's over a decade old. Only get this if you're doing a drop-in upgrade for an existing LGA 1150 motherboard. For that specific purpose, it's the king. For any new build, you should absolutely go with a modern platform that supports DDR4 or DDR5 memory, as that will give you a much better foundation and an actual upgrade path.
Socket: LGA 1150
This is the physical connector type. Think of it like a specific type of keyhole. This CPU only fits in motherboards with an LGA 1150 socket, which are from the 2013-2015 era.
Unlocked Clock Multiplier ('K' series)
The 'K' means you can easily overclock it to run faster than its factory settings. It's like having a car where the manufacturer lets you easily tune the engine for more horsepower, but you need a good cooling system (radiator) to handle the extra heat.
Cores/Threads: 4 Cores, 8 Threads
Think of cores as workers and threads as the number of tasks they can handle at once. Four workers that can each juggle two tasks was great back then, but modern games and applications are now designed for teams of six or more workers.
Alternatives
If this CPU isn't for you, search for a processor with at least 6 cores and 12 threads on a platform that supports DDR4 or, ideally, DDR5 memory for a modern, future-proof build.
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