Intel Core i5 X-Series 7640X 4-core LGA2066
The unlocked 4.0GHz base clock and LGA 2066 socket on the Kaby Lake-X chip provide a direct entry point to the X299 platform’s overclocking headroom and quad-channel memory potential. Its single-core PassMark score of 2541 delivers competent VR-ready performance when paired with a discrete GPU, though the 112W TDP and lack of included cooler demand robust aftermarket cooling. This processor is best for budget-conscious system builders who prioritize future scalability to higher core-count X-Series CPUs over immediate multi-threaded productivity.
No current retailer price
Snapshot
Pros & Cons
Pros
- Strong single thread (72nd percentile) 72nd
- Strong social proof (69th percentile) 69th
- Strong platform (69th percentile) 69th
Cons
- Below average user sentiment (9th percentile)
What owners think
How owner sentiment changed over time
ExclusiveBased on when customers actually wrote their reviews - so you can see whether early praise held up.
- Q4 201750/100
Mixed reviews: some praise overclocking and gaming performance, but others warn of high cost, platform expense, and a strong recommendation to avoid in favor of AMD Ryzen.
- Excellent overclocking potential, reaching 5.2GHz with good cooling.
- Strongly advised against purchase; called garbage and recommended AMD Ryzen instead.
- Great gaming performance but overpriced compared to i7-8700K and higher platform cost.
- Quad-core design may lack future longevity for gaming.
- Q3 201787/100
Buyers report strong overclocking performance and stable operation, with one user noting high temperatures under extreme stress tests but effective throttling.
- Overclocking to 5.0 GHz runs great with no issues.
- Good upgrade from i7-7700K for high-end gaming or work machines.
- Stress testing shows high temps (100°C) under Prime95 but CPU throttles safely.
- No onboard graphics, but acceptable for this category with discrete GPU.
Based on 8 dated customer reviews, grouped by calendar quarter. Period analysis is in English.
The proof
Performance
Specifications
Full Specifications
Processor
| Brand | Intel |
| Series | Core i5 |
| Model | 7640X |
| Codename | Kaby Lake X |
| Class | desktop |
| Process | 14 |
Cores & Clocks
| Cores | 4 |
| Threads | 4 |
| Base Clock | 4000 |
| Boost Clock | 4200 |
Cache
| L2 Cache | 1 |
| L3 Cache | 6 MB |
Performance
| PassMark Multi | 7096 |
| PassMark Single | 2541 |
Memory
| Memory Type | DDR4 |
| Max Speed | 2666 |
| Channels | 2 |
| Max Memory | 64 |
Platform & Power
| Socket | LGA 2066 |
| PCIe | 3 |
| PCIe Lanes | 16 |
| TDP | 112 |
| Unlocked | Yes |
vs Competition
| Spec | Intel Core i5 X-Series 7640X | AMD Ryzen 7 9800X3D | SMC EPYC 9555P | D&H Core i9 BX80673I99940X | Dell Inspiron 7700 | fosa1 fosa4ycn78izud |
|---|---|---|---|---|---|---|
| Cores | 4 | 8 | 64 | 14 | 10 | 6 |
| Threads | 4 | 16 | 128 | 28 | 12 | 12 |
| Boost Clock Mhz | 4200 | 5200 | 4400 | 4400 | 4700 | 3060 |
| L3 Cache Mb | 6 | 96 | 256 | 19.25 | 12 | 12 |
| Tdp W | 112 | 120 | 360 | 165 | 15 | 95 |
| Socket | LGA 2066 | AM5 | AMD Socket SP5 | LGA2066 | Intel BGA 1744 | LGA1366 |
| Integrated Graphics | - | AMD Radeon Graphics | - | - | Iris Xe 96EU | - |
| Compare | Compare | Compare | Compare | Compare |
| Product | AI | Feature | Platform | User Sentiment | Efficiency | Multi Thread | Social Proof | Single Thread |
|---|---|---|---|---|---|---|---|---|
| Intel Core i5 X-Series 7640X | 57.3 | 62.4 | 68.5 | 8.6 | 44 | 48 | 68.9 | 71.7 |
| AMD Ryzen 7 9800X3D Compare | 91.3 | 98.5 | 95.1 | 92.7 | 87.7 | 90 | 96.5 | 95.7 |
| SMC EPYC 9555P Compare | 99.3 | 76.9 | 96.8 | 0 | 90.8 | 99.5 | 0 | 88.7 |
| D&H Core i9 BX80673I99940X Compare | 87.3 | 62.4 | 77.1 | 0 | 72.2 | 84.7 | 73.7 | 73.9 |
| Dell Inspiron 7700 Compare | 62.6 | 69.6 | 71.1 | 0 | 99.4 | 66.6 | 25.1 | 82.1 |
| fosa1 fosa4ycn78izud Compare | 26.2 | 20.3 | 65.1 | 0 | 25.1 | 25 | 64 | 36.6 |
Price
Value & Pricing
Price History
Usage Scores
A full written review is coming soon. The specs, scores, prices and charts above are always up to date.
