CPU Comparison
Intel Core i5-9600KF vs Intel Core i7-7740X
A side-by-side comparison of specs, performance and value. The Intel Core i5-9600KF is an unlocked 6-core, 6-thread desktop processor from the 9th Gen Coffee Lake Refresh lineup, designed for budget overclockers but lacking integrated graphics.
The Bottom Line
Overview & Launch
Specifications Compared
Performance Compared
Productivity
Adequate but limited by 6 threads.
Quad-core limits performance in heavily parallelized applications compared to higher core-count alternatives.
Gaming
Strong 1080p gaming performance when overclocked.
Paired with a strong discrete GPU, the high clocks enable smooth high-refresh gaming, though newer platforms offer better efficiency and future-proofing.
Virtualization
Not ideal due to lack of HT.
Adequate for light VM workloads, but limited core count and memory channels make it less suitable for heavy virtualization.
Efficiency
Power draw increases significantly when overclocked.
112 W TDP for a quad-core results in higher power draw per core than many modern designs.
Specialized Performance
AI / ML
- No AI-specific hardware
- No dedicated AI acceleration hardware
- Suited only for CPU-bound inference and older ML frameworks
Content Creation
Gaming
- Excellent single-core speed
- Can hit 5GHz with good cooling
- Lacks threads for future-proofing
- Strong single-threaded core performance keeps frame rates competitive in many titles
- Best paired with mid-to-high-end discrete GPUs
- Modern gaming CPUs with more cores and faster memory often deliver better 1% lows
Industry Impact
Best CPU by Use Case
Target Audience
Strengths & Weaknesses
Pros
- Unlocked for overclocking
- High single-core performance
- Affordable on used market
- Soldered IHS for better cooling
Cons
- Requires discrete GPU
- No Hyper-Threading
- 95W TDP runs warm
- End-of-life platform
Pros
- High out-of-box clocks
- Unlocked for overclocking
- X299 platform offers flexible chipset PCIe lanes and storage options
- Strong single-threaded performance for its era
- Can breathe life into idle LGA2066 boards
Cons
- Quad core count limits multi-threaded performance
- Only 16 CPU PCIe lanes
- No integrated graphics
- 112 W TDP for four cores is relatively power-hungry
- Platform is discontinued with limited future upgrade options
Competitors & Alternatives
Intel Core i5-9600KF
- AMD Ryzen 5 2600XRival
Enthusiast Desktop
- Compare head-to-headIntel Core i5-9600KRival
Enthusiast Desktop
- AMD Ryzen 5 3600Rival
Enthusiast Desktop
- Compare head-to-headIntel Core i5-8600KRival
Enthusiast Desktop
- AMD Ryzen 7 2700Rival
Enthusiast Desktop
Adds Hyper-Threading and higher clocks.
Compare head-to-head- Intel Core i3-10400FAlt
Cheaper with similar gaming performance.
- AMD Ryzen 5 5600XAlt
Massive single-core and multi-core upgrade.
Intel Core i7-7740X
- AMD Ryzen 5 1600XRival
Gaming & Productivity
- AMD Ryzen 7 1700Rival
Creator
- Intel Core i7-7700KRival
Gaming
- Intel Core i5-7640XRival
Gaming
- Compare head-to-headIntel Core i7-7820XRival
Workstation
More cores and better value for gaming and productivity.
Compare head-to-head- AMD Ryzen 7 2700XAlt
Higher multi-threaded performance and efficiency.
Strong all-round performance on mainstream platforms.
Compare head-to-headMore cores and newer platform features.
Compare head-to-head- AMD Ryzen 5 3600Alt
Much better performance per watt and platform longevity.
Our Verdict on Each
A great overclocking chip for budget gamers who already own a dedicated graphics card, though limited by its 6-thread count.
Best for: Used budget gaming build
Read the full reviewA niche, high-clock quad-core for X299 that delivers strong single-threaded performance but lacks the PCIe and memory bandwidth of Skylake-X siblings, making sense only at low prices for specific reuse scenarios.
Best for: Reusing an existing LGA2066 board for gaming or general tasks when the CPU is acquired at very low cost.
Read the full reviewFrequently Asked Questions
Which is better, Intel Core i5-9600KF or Intel Core i7-7740X?
Based on our editorial ratings, the Intel Core i5-9600KF comes out ahead with a score of 7.5/10. 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, Intel Core i5-9600KF or Intel Core i7-7740X?
For gaming, the Intel Core i7-7740X leads with a gaming performance score of 78/100 among Intel Core i5-9600KF and Intel Core i7-7740X.
Which uses less power?
The Intel Core i5-9600KF has the lowest rated TDP. Power draw across these chips: Intel Core i5-9600KF (95 W), Intel Core i7-7740X (112 W).
Do Intel Core i5-9600KF and Intel Core i7-7740X use the same socket?
No. They use different sockets (Intel Core i5-9600KF: LGA 1151, Intel Core i7-7740X: LGA2066), so each needs a compatible motherboard.
Which has more cores?
The Intel Core i5-9600KF has the most cores. Core counts: Intel Core i5-9600KF (6 cores), Intel Core i7-7740X (4 cores).