CPU Comparison
Intel Core i7-3635QM vs Intel Core i7-4870HQ
A side-by-side comparison of specs, performance and value. The Intel Core i7-3635QM is a high-performance mobile processor launched in late 2012 as part of the Ivy Bridge generation. Designed for premium laptops and mobile workstations, it features four cores and eight threads, delivering robust parallel processing capabilities. It operates at a base clock of 2.4 GHz and can boost up to 3.4 GHz using Intel Turbo Boost 2.0. Unlike the socketed 3630QM, the 3635QM utilizes a BGA 1224 package, meaning it is soldered directly to the motherboard. This allows for slightly thinner laptop designs but prevents CPU upgrades. With a 45-watt thermal design power, it balances high performance with the thermal constraints of premium mobile chassis. The integrated Intel HD 4000 graphics offer capable multimedia decoding. This CPU was a popular choice for system integrators building compact, high-performance laptops where board space and component height were critical factors.
The Bottom Line
Overview & Launch
Specifications Compared
Performance Compared
Productivity
8 threads handle everyday multitasking and office workloads without issues.
Adequate for standard office tasks and light content creation.
Gaming
Handles older or eSports titles well when paired with a discrete GPU.
Handles older or less demanding games well, but struggles with modern titles.
Virtualization
Can run light VMs, but limited by DDR3 bandwidth and 45W power.
Can handle basic VMs but limited by 47W TDP and older architecture.
Efficiency
22nm Ivy Bridge is not as efficient as modern mobile processes.
22nm process is inefficient compared to modern mobile chips.
Specialized Performance
AI / ML
- No dedicated AI hardware
- CPU inference is slow
- No dedicated AI hardware
- Slow inference times
Content Creation
Gaming
- Needs a discrete GPU for gaming
- Capable of 60fps in older titles
- Will bottleneck modern high-end mobile GPUs
- Good for retro gaming
- Iris Pro eDRAM helps frame rates
- Not suitable for modern AAA games
Industry Impact
Best CPU by Use Case
Target Audience
Strengths & Weaknesses
Pros
- Good quad-core performance for its era
- BGA design allows for thinner laptops
- Strong turbo boost frequencies
- Decent 6MB L3 cache
Cons
- Soldered to motherboard, cannot be upgraded
- Older 22nm process
- Supports only DDR3
- Weak integrated graphics
Pros
- Strong integrated graphics for its era
- Good multi-threaded performance
- Includes eDRAM cache
Cons
- End-of-life platform
- High TDP for mobile
- Poor efficiency by modern standards
Competitors & Alternatives
Intel Core i7-3635QM
- AMD A10-4600MRival
Mobile
- Compare head-to-headIntel Core i7-3630QMRival
Mobile
- Intel Core i7-3612QMRival
Mobile
- AMD FX-6100Rival
Desktop
- Compare head-to-headIntel Core i5-3210MRival
Mobile
Newer Haswell architecture with better efficiency.
Compare head-to-head- AMD Ryzen 5 3500UAlt
Modern mobile alternative with vastly superior efficiency.
- Intel Core i5-8250UAlt
Much faster and more efficient for budget laptops.
- Alt
Incredible performance per watt.
Compare head-to-head
Intel Core i7-4870HQ
- AMD A10-5750MRival
Mobile
- Compare head-to-headIntel Core i7-4700HQRival
Mobile
- AMD FX-7500Rival
Mobile
- Intel Core i5-4200HRival
Mobile
- NVIDIA Tegra K1Rival
Mobile
Vastly superior performance and efficiency in the mobile space.
Compare head-to-head- AMD Ryzen 5 4600HAlt
More cores, better integrated graphics, and modern architecture.
- Intel Core i7-1165G7Alt
Massive leap in single-thread speed and battery life.
- Alt
Revolutionary ARM-based efficiency and performance.
Compare head-to-head - AMD Ryzen 7 5800UAlt
Excellent multi-core scaling and low power consumption.
Our Verdict on Each
A capable mobile CPU that provided excellent quad-core performance for laptops in its era, utilizing a space-saving BGA design.
Best for: Purchasing a budget, used laptop for basic tasks or retro gaming.
Read the full reviewAn innovative mobile processor for its time, offering strong integrated graphics, though outclassed by modern efficiency standards.
Best for: Buying a used laptop for basic computing or retro gaming at a heavily discounted price. Buying Advice for the Core i7-4870HQ in the modern context is straightforward: it is no longer viable for new builds, and purchasing a used laptop with this processor requires careful consideration. While it still offers respectable performance for basic productivity, web browsing, and media consumption, its age means it lacks support for modern instruction sets and efficiency improvements found in current-generation chips. If you are buying a used laptop heavily discounted, ensure the battery is healthy, as older systems degrade over time. For any serious gaming or content creation, a newer processor—even a budget modern one—will vastly outperform this aging chip. Avoid spending significant money on this platform today.
Read the full reviewFrequently Asked Questions
Which is better, Intel Core i7-3635QM or Intel Core i7-4870HQ?
Based on our editorial ratings, the Intel Core i7-4870HQ comes out ahead with a score of 7/10. 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 i7-3635QM or Intel Core i7-4870HQ?
For gaming, the Intel Core i7-3635QM leads with a gaming performance score of 50/100 among Intel Core i7-3635QM and Intel Core i7-4870HQ.
Which uses less power?
The Intel Core i7-3635QM has the lowest rated TDP. Power draw across these chips: Intel Core i7-3635QM (45 W), Intel Core i7-4870HQ (47 W).
Do Intel Core i7-3635QM and Intel Core i7-4870HQ use the same socket?
No. They use different sockets (Intel Core i7-3635QM: Intel BGA 1224, Intel Core i7-4870HQ: Intel BGA 1364), so each needs a compatible motherboard.
Which is faster in multi-core benchmarks?
The Intel Core i7-4870HQ posts the highest multi-core benchmark score. Multi-core results: Intel Core i7-3635QM (4,900), Intel Core i7-4870HQ (8,520). Benchmark figures are approximate and workload-dependent.