CPU Comparison
Core i7-620M vs Core i7-640M
A side-by-side comparison of specs, performance and value. The Intel Core i7-620M is a standard-voltage mobile processor launched in early 2010, utilizing the 32nm Arrandale architecture. Designed for mainstream and performance laptops, it operates on a 35W thermal envelope, offering a balance of power and portability. The processor features 2 cores and 4 threads, running at a base clock of 2.66 GHz and a max turbo frequency of 3.33 GHz. This aggressive clock speed made it one of the fastest mobile dual-core processors available at launch. It utilized a multi-chip package, combining a 32nm CPU die with a 45nm graphics and memory controller die. With 4 MB of Smart Cache, it delivered excellent responsiveness for 2010-era productivity, gaming, and multitasking. While obsolete today, the 620M was a workhorse chip in premium laptops, providing desktop-class performance in a mobile form factor.
The Bottom Line
Overview & Launch
Specifications Compared
Performance Compared
Productivity
Struggles with modern web and office software.
Strong single-core helps with older office apps.
Gaming
Can run very old games, but lacks modern instructions.
Requires a discrete GPU from that era for any gaming.
Virtualization
Can run basic VMs but lacks RAM support.
Capable of basic VMs but limited by 2 cores.
Efficiency
35W for 2 cores is inefficient by modern standards.
Typical 35W 32nm efficiency.
Specialized Performance
AI / ML
- No AI capabilities.
- No AI hardware
Content Creation
Gaming
- Ironlake graphics are too weak; relies on discrete GPUs. Lacks AVX2.
- Integrated graphics depend on motherboard chipset
- Not suitable for modern gaming
Industry Impact
Best CPU by Use Case
Target Audience
Strengths & Weaknesses
Pros
- Very high clock speeds for 2010
- Good single-threaded performance
- Socketed design allows replacement
- Included AES-NI
Cons
- Only 2 cores
- Obsolete integrated graphics
- High 35W TDP for a dual-core
- Lacks modern instruction sets
Pros
- Very high clock speeds (3.46 GHz turbo)
- Socketed design allows upgrades
- Strong single-core performance
- AES-NI support
Cons
- Obsolete by modern standards
- Integrated graphics not guaranteed
- 35W TDP is high for a dual-core
- Limited to 1066 MT/s memory
Competitors & Alternatives
Core i7-620M
- Intel Core 2 Duo P9700Rival
Mobile
- AMD Phenom II P920Rival
Mobile
- Compare head-to-headIntel Core i5-430MRival
Mobile
- Intel Core i7-640MRival
Mobile
- AMD Turion II Ultra M640Rival
Mobile
Modern mobile alternative with massive multi-core gains.
Compare head-to-head- AMD Ryzen 5 5625UAlt
Modern efficient mobile chip.
- Intel Core i7-2620MAlt
Sandy Bridge successor.
- Intel N100Alt
Modern budget alternative.
- Alt
Modern ARM comparison.
Compare head-to-head
Core i7-640M
- AMD Phenom II N930Rival
Mobile
- Intel Core i7-620MRival
Mobile
- AMD Turion II Ultra M640Rival
Mobile
- Intel Core i7-720QMRival
Mobile
- Compare head-to-headIntel Core i5-540MRival
Mobile
- AMD Phenom II P920Alt
AMD alternative with more cores but lower clocks.
- Intel Core i7-2640MAlt
Newer Sandy Bridge alternative if upgrading platform.
Our Verdict on Each
A high-performance standard-voltage mobile CPU for 2010, but completely obsolete by modern standards.
Best for: Legacy laptop repair
Read the full reviewAn extremely fast dual-core for its time, but heavily outdated by modern standards. The socketed design is a rare feature for laptops.
Best for: Upgrading a legacy Socket G1 laptop
Read the full reviewFrequently Asked Questions
Which is better, Core i7-620M or Core i7-640M?
Based on our editorial ratings, the Core i7-640M comes out ahead with a score of 6/10. 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, Core i7-620M or Core i7-640M?
For gaming, the Core i7-640M leads with a gaming performance score of 20/100 among Core i7-620M and Core i7-640M.
Do Core i7-620M and Core i7-640M use the same socket?
No. They use different sockets (Core i7-620M: Socket G1 (rPGA988A), Core i7-640M: Intel Socket G1), so each needs a compatible motherboard.
Which is faster in multi-core benchmarks?
The Core i7-620M posts the highest multi-core benchmark score. Multi-core results: Core i7-620M (2,200). Benchmark figures are approximate and workload-dependent.