CPU Comparison
Intel Core 3 N355 vs Intel Core Ultra 5 115U
A side-by-side comparison of specs, performance and value. The Intel Core 3 N355 is an 8-core, 8-thread value SoC for thin-and-light laptops, mini PCs, and edge devices, built on Intel 7 with up to 3.9 GHz burst and 32 EU integrated graphics.
The Bottom Line
Overview & Launch
Specifications Compared
Performance Compared
Productivity
Handles web, office, and light multitasking well; single-channel memory constrains memory-sensitive workloads.
Snappy for office apps and web browsing.
Gaming
Not designed for gaming; playable only at low resolutions and settings in older titles due to the 32 EU iGPU and single-channel memory.
Only suitable for very old or lightweight 2D games.
Virtualization
Adequate for a couple of light VMs or containers, but limited RAM ceiling (16 GB) and single-channel bandwidth.
Not recommended due to low core count.
Efficiency
Strong efficiency at 9–15 W for always-on appliances; Intel 7 is not class-leading in efficiency versus newer nodes, but power is low.
Excellent efficiency for all-day battery life.
Specialized Performance
AI / ML
- No dedicated NPU; CPU-based inference only via AVX2.
- GNA 3.0 assists some low-power audio/voice tasks.
- Unsuitable for heavy local LLMs or large vision models.
- 11 TOPS NPU included
- Good for background blur and noise cancellation
- Not for heavy AI generation
Content Creation
Gaming
- 32 EU Xe iGPU is capable of video decode and desktop compositing, but too weak for modern AAA games.
- Single-channel memory narrows effective bandwidth.
- Best suited for casual, older, or esports titles at 720p/low.
- 48EU graphics is entry-level
- Fine for browser games
- Not suitable for modern 3D titles
Industry Impact
Best CPU by Use Case
Target Audience
Strengths & Weaknesses
Pros
- Eight E-cores provide solid multi-thread throughput at low power.
- Configurable 9 W cTDP enables truly fanless designs.
- LPDDR5 support improves compatibility for compact, soldered-down designs.
- 32 EU iGPU with Quick Sync handles modern video codecs including AV1.
- Embedded lifecycle support makes it attractive for OEMs needing long-term availability.
Cons
- Single-channel memory caps real-world bandwidth.
- No P-cores means lower per-thread performance than P+E designs.
- PCIe 3.0 x9 limits NVMe speeds and high-speed I/O expansion.
- Multiplier locked; no enthusiast overclocking.
- 16 GB max memory may be restrictive for heavier workloads or future-proofing.
Pros
- Excellent power efficiency
- Integrated NPU for AI tasks
- Good burst performance for daily tasks
- Supports fast LPDDR5X memory
- Affordable entry to Core Ultra
Cons
- Low core count limits multitasking
- Only 48EU graphics
- No PCIe Gen 5 support
- Locked multiplier
Competitors & Alternatives
Intel Core 3 N355
- AMD Ryzen 3 7320URival
Budget laptop / thin client
- AMD Ryzen 5 7520URival
Budget laptop / mini PC
- Intel Processor N97 (Alder Lake-N, 4C/4T)Rival
Very low power mini PCs and embedded
- Intel Core i3-N305 (Alder Lake-N, 8C/8T)Rival
Mini PC / laptop, prior generation
- Intel Processor N200 (Alder Lake-N, 4C/4T)Rival
Low-cost mini PCs and embedded
Cheaper if LPDDR5 and slight clock bump are unnecessary; similar 8 E-cores and 32 EU iGPU.
Compare head-to-head- Intel Processor N97Alt
Lower-power 4-core option when 8 threads are not needed.
- Intel Processor N200Alt
Very low power 4-core for strictly light tasks; not suited if you need 8 threads.
Lower PBP (7 W) version of Twin Lake for fanless designs when peak performance is less critical.
Compare head-to-head
Intel Core Ultra 5 115U
- AMD Ryzen 5 8640URival
Mobile
- AMD Ryzen 5 7640URival
Mobile
- Compare head-to-headIntel Core Ultra 5 125URival
Mobile
- Qualcomm Snapdragon X PlusRival
Mobile
- Compare head-to-headApple M2Rival
Mobile
More E-Cores and better graphics for a small price bump.
Compare head-to-headOlder Raptor Lake architecture but similar performance.
Compare head-to-head- Intel Core i5-1334UAlt
Cheaper, older generation alternative.
- AMD Ryzen 3 7440UAlt
Competitive budget alternative.
Our Verdict on Each
The Core 3 N355 is a sensible step up over the Alder Lake-N N305 for always-on, thermally constrained systems: modestly higher clocks, LPDDR5 support, and Intel 7 branding, but still limited by single-channel memory, PCIe 3.0, and no P-core performance.
Best for: Buying or specifying a fanless mini PC, home NAS, or embedded appliance where 15 W (or lower) is a hard constraint and workloads are light.
Read the full reviewA solid entry-level Meteor Lake chip that delivers great battery life and AI features for basic daily tasks.
Best for: The Core Ultra 5 115U is the ideal processor for students, office workers, and casual users who prioritize battery life and affordability. If your daily routine involves document editing, web conferencing, and streaming video, this CPU will handle these tasks effortlessly while providing excellent battery longevity. The integrated NPU adds value by preparing your device for future Windows AI features. However, this is not the processor for video editing, 3D rendering, or gaming; its reduced core count and 48EU graphics are not designed for heavy workloads. If you occasionally dabble in photo editing or light gaming, consider stepping up to the 135U. For purely administrative and educational tasks, the 115U offers outstanding value and efficiency.
Read the full reviewFrequently Asked Questions
Which is better, Intel Core 3 N355 or Intel Core Ultra 5 115U?
Based on our editorial ratings, the Intel Core Ultra 5 115U comes out ahead with a score of 7.8/10. 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 3 N355 or Intel Core Ultra 5 115U?
For gaming, the Intel Core Ultra 5 115U leads with a gaming performance score of 50/100 among Intel Core 3 N355 and Intel Core Ultra 5 115U.
Do Intel Core 3 N355 and Intel Core Ultra 5 115U use the same socket?
No. They use different sockets (Intel Core 3 N355: FCBGA1264 (35 mm × 24 mm), Intel Core Ultra 5 115U: Intel BGA 2049), so each needs a compatible motherboard.