CPU Comparison
Intel Core i5-9600K vs Intel Core i5-7640X X-series
A side-by-side comparison of specs, performance and value. The Intel Core i5-9600K is a 6-core, 6-thread unlocked desktop processor from the Coffee Lake Refresh family, featuring high clock speeds and integrated graphics for mainstream gamers.
The Bottom Line
Overview & Launch
Specifications Compared
Performance Compared
Productivity
Lacks threads for heavy productivity.
Four cores with no Hyper-Threading limit multi-threaded workloads; better suited to light productivity than heavy rendering or compiling.
Gaming
Still performs well in gaming when overclocked.
Sufficient for high-refresh gaming when paired with a strong GPU, but constrained by lack of Hyper-Threading and limited core count in modern titles.
Virtualization
Not ideal due to 6 thread limit.
Can run modest VM loads, but core and thread count make it less ideal for multiple concurrent VMs.
Efficiency
Can draw significant power when pushed to 5GHz.
High 112 W TDP for a quad-core design results in lower performance-per-watt than newer mainstream platforms.
Specialized Performance
AI / ML
- No dedicated AI hardware
- No dedicated AI acceleration; CPU-bound inference only.
- Lacks AVX-512; limited to SSE4.1/4.2 and AVX2 instruction sets.
Content Creation
Gaming
- Excellent single-core speed
- Often hits 5GHz
- Bottlenecked by 6 threads in new games
- High clocks help in CPU-bound scenarios, but modern games increasingly benefit from more cores/threads.
- Requires a discrete GPU; no integrated graphics.
- Performance comparable to contemporary mainstream Kaby Lake i5s when GPU-bound.
Industry Impact
Best CPU by Use Case
Target Audience
Strengths & Weaknesses
Pros
- Unlocked for overclocking
- Soldered IHS for great thermals
- High single-core speed
- Includes integrated graphics
Cons
- No Hyper-Threading
- 95W TDP requires good cooling
- End-of-life platform
- Struggles in modern multi-threaded games
Pros
- High base and boost clock speeds
- Unlocked multiplier for overclocking
- Supports Intel Optane Memory
- VT-x and VT-d virtualization support
- DDR4-2666 dual-channel memory support
Cons
- No integrated graphics requires a discrete GPU
- No Hyper-Threading; only four threads
- Only dual-channel memory on a HEDT platform
- Only 16 CPU PCIe 3.0 lanes
- Discontinued platform with limited upgrade options
Competitors & Alternatives
Intel Core i5-9600K
- AMD Ryzen 5 2600XRival
Enthusiast Desktop
- Compare head-to-headIntel Core i5-8600KRival
Enthusiast Desktop
- AMD Ryzen 5 3600Rival
Enthusiast Desktop
- Compare head-to-headIntel Core i7-8700Rival
High-End Desktop
- AMD Ryzen 7 2700Rival
Enthusiast Desktop
Adds Hyper-Threading for better multi-threading.
Compare head-to-head- Intel Core i5-12400FAlt
Modern budget king with much better performance.
- AMD Ryzen 5 5600XAlt
Massive single-core upgrade.
Cheaper variant if you already have a GPU.
Compare head-to-head
Intel Core i5-7640X X-series
- AMD Ryzen 5 1600Rival
Mainstream
- AMD Ryzen 5 1500XRival
Mainstream
- Compare head-to-headIntel Core i5-7600KRival
Mainstream
- Intel Core i7-7700KRival
Mainstream
- RivalCompare head-to-head
Six-core mainstream Coffee Lake with better multi-threaded performance.
Compare head-to-head- AMD Ryzen 5 2600Alt
Six cores, 12 threads on AM4 with superior efficiency and upgrade path.
Later-generation six-core with higher clocks and improved platform longevity.
Compare head-to-head- AMD Ryzen 5 3600Alt
Zen 2 six-core with much higher IPC and efficiency on AM4.
Six-core, 12-thread Comet Lake on modern platform with DDR4 and better connectivity.
Compare head-to-head
Our Verdict on Each
A legendary overclocker that dominated 1080p gaming in its era, though its 6-thread limitation shows its age in modern multi-threaded workloads.
Best for: Upgrading an existing Z390/Z370 system
Read the full reviewA capable but ill-positioned quad-core for the X299 HEDT platform, offering strong clock speeds yet lacking Hyper-Threading, integrated graphics, and the multi-threaded punch of contemporaries; mainly relevant today for specific upgrades or used-market builds.
Best for: Upgrading an existing X299 system on a tight budget or acquiring used parts at low cost
Read the full reviewFrequently Asked Questions
Which is better, Intel Core i5-9600K or Intel Core i5-7640X X-series?
Based on our editorial ratings, the Intel Core i5-9600K comes out ahead with a score of 8/10. 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 i5-9600K or Intel Core i5-7640X X-series?
For gaming, the Intel Core i5-9600K leads with a gaming performance score of 78/100 among Intel Core i5-9600K and Intel Core i5-7640X X-series.
Which uses less power?
The Intel Core i5-9600K has the lowest rated TDP. Power draw across these chips: Intel Core i5-9600K (95 W), Intel Core i5-7640X X-series (112 W).
Do Intel Core i5-9600K and Intel Core i5-7640X X-series use the same socket?
No. They use different sockets (Intel Core i5-9600K: LGA 1151, Intel Core i5-7640X X-series: FCLGA2066), so each needs a compatible motherboard.
Which has more cores?
The Intel Core i5-9600K has the most cores. Core counts: Intel Core i5-9600K (6 cores), Intel Core i5-7640X X-series (4 cores).