CPU Comparison
Intel Core i5-8420 vs Intel Core i5-9500
A side-by-side comparison of specs, performance and value. The Intel Core i5-8420 is a mainstream six-core desktop processor that quietly filled the gaps in Intel's 8th Generation Coffee Lake lineup, offering a compelling mix of clock speeds and core counts for budget-conscious users.
The Bottom Line
Overview & Launch
Specifications Compared
Performance Compared
Productivity
Handles office tasks and moderate programming workloads efficiently.
Adequate for office tasks but slow for heavy rendering.
Gaming
Capable of smooth 1080p gaming when paired with a mid-range discrete GPU.
Struggles with modern gaming unless paired with a low-end GPU.
Virtualization
Good for basic VMs, but 6 threads limit heavy parallel virtualization.
Limited by the lack of Hyper-Threading.
Efficiency
Balanced performance within a standard 65W power envelope.
Excellent power efficiency for daily tasks.
Specialized Performance
AI / ML
- No AI-specific hardware
- CPU inference is slow due to lack of threads
- Not suitable for AI workloads
Content Creation
Gaming
- Excellent for budget gaming builds
- Handles eSports titles flawlessly
- May bottleneck high-end modern GPUs at 1080p
- Low clock speeds limit performance
- Lacks HT for modern engines
- Only suitable for e-sports titles
Industry Impact
Best CPU by Use Case
Target Audience
Strengths & Weaknesses
Pros
- Excellent price-to-performance ratio historically
- Strong single-core speeds for gaming
- Includes integrated UHD Graphics 630
- Standard 65W TDP is easy to cool
- Wide compatibility with 300-series motherboards
Cons
- No Hyper-Threading (only 6 threads)
- Locked multiplier prevents overclocking
- End-of-life platform (LGA 1151)
- Officially limited to DDR4-2666
- Not supported by Windows 11 officially
Pros
- Low power consumption
- Good for basic office tasks
- Includes integrated graphics
- Affordable on the used market
Cons
- No Hyper-Threading
- Low base clock
- End-of-life platform
- Limited multi-threading capability
Competitors & Alternatives
Intel Core i5-8420
- AMD Ryzen 5 2600Rival
Mainstream Desktop
- Compare head-to-headIntel Core i5-8400Rival
Mainstream Desktop
- AMD Ryzen 5 1600Rival
Mainstream Desktop
- Compare head-to-headIntel Core i5-8500Rival
Mainstream Desktop
- Intel Core i7-7700Rival
Mainstream Desktop
Slightly newer generation with similar specifications.
Compare head-to-headNewer platform with 8 threads and similar gaming performance.
Compare head-to-head
Intel Core i5-9500
- AMD Ryzen 5 2600Rival
Mainstream Desktop
- Compare head-to-headIntel Core i5-8400Rival
Mainstream Desktop
- AMD Ryzen 5 1600Rival
Mainstream Desktop
- Compare head-to-headIntel Core i5-9400FRival
Mainstream Desktop
- AMD Ryzen 3 3300XRival
Budget Desktop
Better performance and upgrade path.
Compare head-to-head- AMD Ryzen 5 3600Alt
Superior multi-threading and modern architecture.
Modern budget alternative with better single-core speed.
Compare head-to-head- AMD Ryzen 5 5600GAlt
Much better integrated graphics.
Slightly higher clock speeds on the same platform.
Compare head-to-head
Our Verdict on Each
A highly cost-effective 6-core processor that delivers excellent value for mainstream users, though lacking Hyper-Threading limits its heavy multitasking ceiling.
Best for: Upgrading an older LGA 1151 system on a budget, or building an office/HTPC machine.
Read the full reviewA dependable 6-core CPU for basic computing, though its lack of Hyper-Threading and older architecture make it obsolete for modern upgrades.
Best for: Cheap upgrade for an older LGA 1151 system
Read the full reviewFrequently Asked Questions
Which is better, Intel Core i5-8420 or Intel Core i5-9500?
Based on our editorial ratings, the Intel Core i5-8420 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 i5-8420 or Intel Core i5-9500?
For gaming, the Intel Core i5-8420 leads with a gaming performance score of 78/100 among Intel Core i5-8420 and Intel Core i5-9500.
Do Intel Core i5-8420 and Intel Core i5-9500 use the same socket?
No. They use different sockets (Intel Core i5-8420: Intel Socket 1151, Intel Core i5-9500: LGA 1151), so each needs a compatible motherboard.