CPU Comparison
Intel Core i7-3517U vs Core i5-2450M
A side-by-side comparison of specs, performance and value. The Intel Core i7-3517U is an ultra-low voltage mobile processor launched in June 2012 as part of the Ivy Bridge family. Designed primarily for the burgeoning Ultrabook market, it operates at a 17-watt TDP, striking a balance between performance and battery life. Built on Intel's 22nm process, it features 2 cores and 4 threads. The processor runs at a base clock of 1.9 GHz and can dynamically boost up to 3.0 GHz using Intel Turbo Boost Technology. It includes 4MB of L3 cache and supports dual-channel DDR3 memory. The integration of Intel HD Graphics 4000 provided a noticeable improvement in graphical capabilities over the previous generation's HD 3000, allowing for basic 1080p gaming and smooth hardware-accelerated video decoding. While its dual-core architecture limits its multi-threaded potential by modern standards, the 3517U was a highly capable chip in its era, powering countless thin-and-light laptops and ultrabooks.
The Bottom Line
Overview & Launch
Specifications Compared
Performance Compared
Productivity
Slow for modern office tasks and multitasking.
Struggles with modern web applications and heavy office suites.
Gaming
Cannot run modern games; struggles with basic 3D.
Unable to play modern AAA games at acceptable frame rates.
Virtualization
Not recommended due to 2 cores.
Efficiency
17W TDP was efficient in 2012, but outdated now.
32nm process is highly inefficient by today's standards.
Specialized Performance
AI / ML
- No AI hardware
- No AI acceleration
- Insufficient compute for local AI
Content Creation
Gaming
- HD 4000 is too weak
- Only suitable for older 2D games
- Outdated architecture
- Weak integrated graphics
- Insufficient for modern titles
Industry Impact
Best CPU by Use Case
Target Audience
Strengths & Weaknesses
Pros
- Was efficient in 2012
- Good single-core burst performance
- 17W TDP
- Enabled thin-and-light designs
Cons
- Only 2 cores
- Very slow for modern tasks
- No Windows 11 support
- 22nm process is outdated
Pros
- Hyper-Threading support
- Integrated graphics
- Low cost on used market
Cons
- Obsolete architecture
- High power consumption for performance
- No modern instruction sets
- Very slow by current standards
Competitors & Alternatives
Intel Core i7-3517U
- AMD A6-4455MRival
Mobile
- AMD A10-4655MRival
Mobile
- Intel Core i5-3317URival
Mobile
- Intel Core i7-2677MRival
Mobile
- AMD A8-4555MRival
Mobile
Successor with better efficiency and performance.
Compare head-to-headModern budget CPU with vastly superior performance.
Compare head-to-head- AMD Ryzen 3 5300UAlt
Modern budget alternative.
Excellent modern ultrabook chip.
Compare head-to-head- Alt
Unmatched efficiency for basic use.
Compare head-to-head
Core i5-2450M
- AMD A8-3520MRival
Mobile
- AMD A6-3420MRival
Mobile
- Intel Core i5-2410MRival
Mobile
- Intel Core i3-2330MRival
Mobile
- AMD A8-3500MRival
Mobile
Ivy Bridge upgrade with better efficiency.
Compare head-to-head- Intel Core i3-3110MAlt
Cheaper dual-core option.
- AMD A10-4600MAlt
Better integrated graphics.
- Intel Core i7-2620MAlt
Higher clock speed and cache.
- AMD A8-3550MXAlt
Stronger multi-threaded performance.
Our Verdict on Each
A capable 2012 ultrabook chip, but its dual-core design is too slow for modern multitasking.
Best for: If you are considering a laptop with the Intel Core i7-3517U today, it should only be purchased in the used market at an extremely low price. It remains capable of very basic web browsing and document editing, but its 2-core design is a major bottleneck for modern multitasking. Avoid purchasing a laptop with this CPU if you need to do any modern productivity work, video editing, or gaming. It is best suited for budget-conscious buyers who need a cheap, secondary machine for light web browsing or for students on a very tight budget. For any primary computing needs, investing in a newer platform is strongly recommended for better efficiency, security, and performance.
Read the full reviewAn obsolete mobile processor that can still handle extremely basic tasks, but is completely outclassed by modern low-end chips.
Best for: Keeping an old laptop running
Read the full reviewFrequently Asked Questions
Which uses less power?
The Intel Core i7-3517U has the lowest rated TDP. Power draw across these chips: Intel Core i7-3517U (17 W), Core i5-2450M (35 W).
Do Intel Core i7-3517U and Core i5-2450M use the same socket?
Yes — all of these CPUs use the Intel BGA 1023 socket, so they share compatible motherboards.
Which is faster in multi-core benchmarks?
The Core i5-2450M posts the highest multi-core benchmark score. Multi-core results: Core i5-2450M (0). Benchmark figures are approximate and workload-dependent.