CPU Comparison
Intel Core i5-10400 vs Intel Core i7-8670
A side-by-side comparison of specs, performance and value. The Intel Core i5-10400 is a 6-core, 12-thread desktop processor built on the 14nm Comet Lake architecture, offering solid mainstream performance with integrated UHD 630 graphics.
The Bottom Line
Overview & Launch
Specifications Compared
Performance Compared
Productivity
Handles everyday productivity and multitasking without issues.
12 threads make quick work of office and compiling tasks.
Gaming
Capable of smooth 1080p gaming when paired with a mid-range GPU.
Handles modern games easily when paired with a mid-to-high-end GPU.
Virtualization
Suitable for basic virtualization needs with 12 threads.
Capable of running multiple VMs smoothly.
Efficiency
Power consumption is reasonable, though the 14nm process is less efficient than newer nodes.
Good efficiency within the 65W envelope.
Specialized Performance
AI / ML
- No dedicated AI hardware
- Relies on CPU-based AVX2 instructions for inference
- No AI hardware
- Standard CPU inference
Content Creation
Gaming
- Excellent 1080p performance
- Slightly limited by 2666 MT/s memory speed
- Best paired with GTX 1660 or RTX 3060 class GPUs
- Won't bottleneck RTX 3060 or RX 6600 class GPUs
- High turbo boost ensures smooth frame times
- Great for 60Hz and 144Hz gaming
Industry Impact
Best CPU by Use Case
Target Audience
Strengths & Weaknesses
Pros
- Excellent value for money
- 6 cores and 12 threads
- Includes integrated graphics
- Low 65W base TDP
- Wide motherboard compatibility
Cons
- Locked multiplier
- 14nm process runs warmer under load
- Limited to PCIe 3.0
- Memory speed capped at 2666 MT/s natively
Pros
- Excellent price-to-performance
- 6 cores / 12 threads
- Easy to cool (65W)
- Good turbo boost speeds
Cons
- Locked multiplier
- Older 14nm process
- Limited upgrade path on LGA 1151
- Marginal improvement over i7-8700
Competitors & Alternatives
Intel Core i5-10400
- AMD Ryzen 5 3600Rival
Mainstream Desktop
- AMD Ryzen 5 2600Rival
Budget Desktop
- Compare head-to-headIntel Core i5-10400FRival
Mainstream Desktop
- Compare head-to-headIntel Core i5-9400Rival
Budget Desktop
- AMD Ryzen 3 3300XRival
Budget Desktop
- Intel Core i5-11400Alt
Offers better IPC and faster memory support.
A cheaper alternative for purely budget gaming.
Compare head-to-head- AMD Ryzen 5 5600Alt
Significantly faster single-core and gaming performance.
- Intel Core i5-12400Alt
Newer platform with DDR5 and PCIe 5.0 support.
Intel Core i7-8670
- AMD Ryzen 5 2600Rival
Desktop
- AMD Ryzen 5 2600XRival
Desktop
- Compare head-to-headIntel Core i5-8600Rival
Desktop
- Compare head-to-headIntel Core i7-8700Rival
Desktop
- AMD Ryzen 7 2700Rival
Desktop
- AMD Ryzen 5 5600Alt
Much faster single-core and newer platform.
- Intel Core i5-12400FAlt
Better performance and modern features.
Cheaper 10th gen alternative with similar performance.
Compare head-to-head- AMD Ryzen 7 5700XAlt
More cores and better efficiency.
Our Verdict on Each
A highly cost-effective 6-core CPU that delivers excellent value for 1080p gaming and general computing, despite its locked multiplier and older 14nm process.
Best for: The Intel Core i5-10400 is highly recommended for users building a budget to mid-range 1080p gaming PC or a general-purpose home/office computer. Its 6-core, 12-thread configuration provides excellent longevity for everyday tasks, light content creation, and modern gaming when paired with a mid-range GPU like an RTX 3060 or RX 6600. The inclusion of UHD 630 graphics means the system is functional even if a discrete GPU fails or is delayed in purchase. Because it is a locked processor, there is no need to invest in expensive Z-series motherboards or high-end cooling; a simple B460 board and the stock cooler are sufficient. This makes it an ideal choice for budget-conscious buyers who prioritize stability, reliability, and maximum value over enthusiast-level tweaking or extreme frame rates.
Read the full reviewA well-balanced 65W hexa-core CPU that offers excellent value for 1080p gaming and everyday productivity without the premium of K-series chips.
Best for: Upgrading an older LGA 1151 system for 1080p gaming.
Read the full reviewFrequently Asked Questions
Which is better, Intel Core i5-10400 or Intel Core i7-8670?
Based on our editorial ratings, the Intel Core i7-8670 comes out ahead with a score of 8.5/10. 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 i5-10400 or Intel Core i7-8670?
For gaming, the Intel Core i7-8670 leads with a gaming performance score of 85/100 among Intel Core i5-10400 and Intel Core i7-8670.
Do Intel Core i5-10400 and Intel Core i7-8670 use the same socket?
No. They use different sockets (Intel Core i5-10400: LGA 1200, Intel Core i7-8670: Intel Socket 1151), so each needs a compatible motherboard.
Which is faster in multi-core benchmarks?
The Intel Core i5-10400 posts the highest multi-core benchmark score. Multi-core results: Intel Core i5-10400 (14,500), Intel Core i7-8670 (14,000). Benchmark figures are approximate and workload-dependent.