CPU Comparison
Core i7-7700K vs Intel Core i7-8700K
A side-by-side comparison of specs, performance and value. The Intel Core i7-7700K is a high-performance desktop processor launched in January 2017, representing the flagship of the Kaby Lake mainstream lineup. Built on the 14nm+ process, this quad-core CPU features Hyper-Threading, delivering 8 concurrent threads. It operates at an aggressive base clock of 4.2 GHz and boosts up to 4.5 GHz out of the box, providing exceptional single-threaded performance. The K suffix denotes an unlocked multiplier, making it a favorite among enthusiasts for overclocking, often pushing beyond 5.0 GHz with adequate cooling. With a 91W TDP, it demands robust cooling, especially since it uses thermal paste instead of solder between the die and IHS, a point of criticism among the community. It features 8MB of L3 cache and supports dual-channel DDR4-2400 memory. The integrated Intel HD Graphics 630 offers basic display capabilities, though its primary market is gamers relying on discrete GPUs. The i7-7700K marked the pinnacle of Intel's quad-core dominance before market pressures forced a core count increase.
The Bottom Line
Overview & Launch
Specifications Compared
Performance Compared
Productivity
12 threads and high clocks make quick work of compiling and rendering.
Gaming
Still handles modern GPUs and high-refresh-rate gaming with ease.
Virtualization
Great for home labs and virtualization.
Efficiency
Consumes more power than newer generations when overclocked.
Specialized Performance
AI / ML
No data
- No AI hardware
- Strong CPU inference due to high clocks
Content Creation
No data
Gaming
No data
- Won't bottleneck RTX 3080/4080 class GPUs
- Excellent for 144Hz+ gaming
- Overclocking increases frame rates further
Industry Impact
Best CPU by Use Case
Target Audience
Strengths & Weaknesses
Pros
- Excellent single-core performance
- Unlocked for overclocking
- Easily hits 5.0 GHz with AIO cooling
- Great for high-refresh-rate 1080p gaming
Cons
- Only 4 cores
- Uses thermal paste instead of solder (runs hot)
- High power draw when overclocked
- LGA 1151 is a dead platform
Pros
- Unlocked for overclocking
- Excellent single-core performance
- 6 cores / 12 threads
- Great for high-refresh gaming
Cons
- Runs hot under load
- Requires delidding for extreme OC
- Older 14nm process
- No PCIe 4.0
Competitors & Alternatives
Core i7-7700K
- AMD Ryzen 7 1700Rival
Performance Desktop
- AMD Ryzen 5 1600XRival
Performance Desktop
- Compare head-to-headIntel Core i7-6700KRival
Performance Desktop
- Compare head-to-headIntel Core i5-7600KRival
Mainstream Desktop
- AMD FX-9590Rival
Performance Desktop
- Intel Core i7-7700Alt
Locked version with lower TDP if overclocking isn't needed.
- AMD Ryzen 5 1600Alt
More cores for multi-threaded workloads at a similar price.
Next-gen upgrade with 6 cores.
Compare head-to-head- AMD Ryzen 5 3600Alt
Much newer architecture with better IPC and efficiency.
Intel Core i7-8700K
- AMD Ryzen 7 2700XRival
Desktop Enthusiast
- AMD Ryzen 7 1700XRival
Desktop Enthusiast
- RivalCompare head-to-head
- Compare head-to-headIntel Core i5-8600KRival
Desktop Enthusiast
- AMD Ryzen 5 2600XRival
Desktop Enthusiast
Successor with higher clocks and soldered IHS.
Compare head-to-head- Intel Core i5-12400FAlt
Modern alternative with equal performance and lower price.
- AMD Ryzen 5 5600XAlt
Better efficiency and newer platform.
Similar architecture, higher clocks.
Compare head-to-head- AMD Ryzen 7 5800X3DAlt
Vastly superior gaming performance.
Our Verdict on Each
A legendary overclocker that delivered top-tier single-core performance in 2017, but its 4-core limit shows its age in modern multi-threaded workloads.
Best for: Upgrading an existing Z270 system cheaply
Read the full reviewAn iconic processor that brought 6 cores to the mainstream, offering incredible overclocking headroom and gaming performance that holds up today.
Best for: Legacy system upgrade for high-refresh gaming without spending on a new platform.
Read the full reviewFrequently Asked Questions
Which is better, Core i7-7700K or Intel Core i7-8700K?
Based on our editorial ratings, the Intel Core i7-8700K comes out ahead with a score of 9.5/10. That said, the best choice depends on your workload — check the spec and performance breakdown above for gaming, productivity and efficiency differences.
Which is faster for gaming, Core i7-7700K or Intel Core i7-8700K?
For gaming, the Intel Core i7-8700K leads with a gaming performance score of 92/100 among Core i7-7700K and Intel Core i7-8700K.
Which uses less power?
The Core i7-7700K has the lowest rated TDP. Power draw across these chips: Core i7-7700K (91 W), Intel Core i7-8700K (95 W).
Do Core i7-7700K and Intel Core i7-8700K use the same socket?
No. They use different sockets (Core i7-7700K: LGA 1151, Intel Core i7-8700K: Intel Socket 1151), so each needs a compatible motherboard.
Which has more cores?
The Intel Core i7-8700K has the most cores. Core counts: Core i7-7700K (4 cores), Intel Core i7-8700K (6 cores).
Which is faster in multi-core benchmarks?
The Intel Core i7-8700K posts the highest multi-core benchmark score. Multi-core results: Core i7-7700K (0), Intel Core i7-8700K (16,000). Benchmark figures are approximate and workload-dependent.