ASUS Zenbook 14 OLED Core Ultra 5 125H) vs Dell Inspiron 15 3520 — Intel Core i5-1235U
The ASUS Zenbook 14 OLED Core Ultra 5 125H) is the premium choice here, boasting a stunning 2880 x 1800 OLED display that enhances everything from work to streaming. In contrast, the Dell Inspiron 15 3520 — Intel Core i5-1235U offers a more budget-friendly experience with a standard 1920 x 1080 display, which can feel limiting for creative tasks. If you're after vibrant visuals and top-tier performance, the ASUS is worth the extra investment, but if you're looking to save money, the Dell still offers solid specs and upgradeable RAM options. Key specs: Display: 14" vs 15.6" and Weight: 45.15 oz vs 58.55 oz.
Why compare these? The ASUS Zenbook 14 OLED Core Ultra 5 125H) (high-end) and Dell Inspiron 15 3520 — Intel Core i5-1235U (budget-friendly) represent different approaches to laptops. While they may appeal to different budgets, many buyers consider both options. This 2026 comparison helps you decide if the differences justify the price gap.
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Key Differences at a Glance
| Aspect | ASUS Zenbook | Dell Inspiron |
|---|---|---|
| User Rating | ✓4.6★ (16 reviews) | 4.5★ (2,701 reviews) |
| Top Strength | Stunning 120Hz OLED touchscreen with verified HDR brightness | 120Hz refresh rate provides smoother scrolling than typical 60Hz budget laptops |
| Main Drawback | Glossy screen handles reflections poorly in bright environments | Most high-volume US retail configurations (e.g., Best Buy) LACK a USB-C port |
| Market Position | ✓Premium | Budget |
ASUS Zenbook 14 OLED Core Ultra 5 125H)
Intel Core Ultra 5 125H (14-core: 4P + 8E + 2LPE), up to 4.5 GHz, 18 MB Smart Cache
Intel Arc Graphics (Integrated; 7 Xe-cores)
Intel AI Boost (Up to 11 TOPS)
Single-fan cooling system (optimized for quiet operation)
Dell Inspiron 15 3520 — Intel Core i5-1235U
Intel Core i5-1235U (Alder Lake-U, 10 cores, up to 4.4 GHz)
Intel Iris Xe Graphics (Integrated; requires dual-channel RAM, otherwise UHD)
No (Not supported)
Air (Single fan)
Only the specs that differ are shown here. Winners are highlighted when the data is clear.
+Full specs, pros, and cons
Everything side-by-side with ratings and the full spec list.
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Full specs, pros, and cons
Everything side-by-side with ratings and the full spec list.
Comparison: ASUS Zenbook 14 OLED Core Ultra 5 125H) vs Dell Inspiron 15 3520 — Intel Core i5-1235U
ASUS Zenbook 14 OLED Core Ultra 5 125H)
Dell Inspiron 15 3520 — Intel Core i5-1235U
| Criterion | ASUS Zenbook 14 OLED Core Ultra 5 125H) | Dell Inspiron 15 3520 — Intel Core i5-1235U |
|---|---|---|
| Rating | ★4.6(16)Amazon | ★4.5(2,701)Best Buy |
Processor | Intel Core Ultra 5 125H (14-core: 4P + 8E + 2LPE), up to 4.5 GHz, 18 MB Smart Cache | Intel Core i5-1235U (Alder Lake-U, 10 cores, up to 4.4 GHz) |
Graphics | Intel Arc Graphics (Integrated; 7 Xe-cores) | Intel Iris Xe Graphics (Integrated; requires dual-channel RAM, otherwise UHD) |
AI Engine | Intel AI Boost (Up to 11 TOPS) | No (Not supported) |
Cooling | Single-fan cooling system (optimized for quiet operation) | Air (Single fan) |
RAM | 16 GB LPDDR5X (Onboard; 7467 MHz) | 8 GB or 16 GB DDR4-2666/3200 MHz |
RAM Upgrade | No (Soldered) | Yes (2x SODIMM slots, up to 16 GB officially, 32 GB unofficially) |
Storage | 512 GB PCIe Gen4 NVMe SSD | 512 GB PCIe NVMe M.2 SSD |
Storage Upgrade | Yes (1x M.2 2280 PCIe Gen4 slot) | Yes (1x M.2 2230/2280 slot) |
Display Size | 14.0" | 15.6" |
Resolution | 2880 x 1800 (3K) | 1920 x 1080 (FHD) |
Aspect Ratio | 16:10 | 16:9 |
Screen Type | OLED (Touchscreen; Glossy; SGS Eye Care Display) | IPS (Anti-glare; Wide Viewing Angle) |
Refresh Rate | 120 Hz | 120 Hz |
Brightness | 400 nits (SDR); 600 nits (HDR Peak) | 250 nits (Typical) |
Color Gamut | 100% DCI-P3 | 45% NTSC (approx. 60% sRGB) |
Keyboard Layout | US Standard (QWERTY) | US English (ANSI) with NumPad |
Keyboard Backlight | Yes (White) | No (Optional/Configuration dependent; mostly No on retail units) |
Biometrics | IR Webcam (Windows Hello Face Authentication) | No (Fingerprint reader is optional/configuration dependent) |
Webcam | 1080p FHD IR camera with privacy shutter | 720p HD camera |
USB Ports | 2x USB-C (Thunderbolt 4 / Power Delivery / DisplayPort); 1x USB-A 3.2 Gen 1 | 2x USB-A 3.2 Gen 1; 1x USB-A 2.0; (Note: USB-C is often ABSENT on i5-1235U US retail units) |
Video Ports | 1x HDMI 2.1 (TMDS) | 1x HDMI 1.4 (Supports up to 1920x1080 @ 60Hz) |
Audio Ports | 1x 3.5mm Combo Audio Jack | 1x 3.5mm Headphone/Mic combo jack |
Connectivity | Wi-Fi 6E (802.11ax); Bluetooth 5.3 | Wi-Fi 6 (802.11ax 2x2); Bluetooth 5.1 |
Battery | 4-cell Li-Ion (75 Wh) | 41 Wh (3-cell Li-ion) or 54 Wh (4-cell; config dependent) |
Charger | 65 W USB-C Adapter | 65 W Barrel-pin AC adapter (4.5mm) |
Weight | 1.28 kg (2.82 lbs) | 1,660 g (3.65 lbs) |
Build Material | Aluminum (Ponder Blue) | Plastic (Carbon Black) |
Operating System | Windows 11 Home | Windows 11 Home |
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ASUS Zenbook 14 OLED Core Ultra 5 125H)
Intel Core Ultra 5 125H (14-core: 4P + 8E + 2LPE), up to 4.5 GHz, 18 MB Smart Cache
Intel Arc Graphics (Integrated; 7 Xe-cores)
Intel AI Boost (Up to 11 TOPS)
Single-fan cooling system (optimized for quiet operation)
16 GB LPDDR5X (Onboard; 7467 MHz)
No (Soldered)
Pros
- Stunning 120Hz OLED touchscreen with verified HDR brightness
- Excellent battery life (75 Wh) for a 14-inch laptop
Cons
- Glossy screen handles reflections poorly in bright environments
- RAM is soldered and cannot be upgraded later
Dell Inspiron 15 3520 — Intel Core i5-1235U
Intel Core i5-1235U (Alder Lake-U, 10 cores, up to 4.4 GHz)
Intel Iris Xe Graphics (Integrated; requires dual-channel RAM, otherwise UHD)
No (Not supported)
Air (Single fan)
8 GB or 16 GB DDR4-2666/3200 MHz
Yes (2x SODIMM slots, up to 16 GB officially, 32 GB unofficially)
Pros
- 120Hz refresh rate provides smoother scrolling than typical 60Hz budget laptops
- Memory (RAM) is not soldered and can be upgraded via two SODIMM slots
Cons
- Most high-volume US retail configurations (e.g., Best Buy) LACK a USB-C port
- HDMI 1.4 port cannot output 4K at 60Hz (limited to 1080p)
Which one is better?
The ASUS Zenbook 14 OLED Core Ultra 5 125H) is the better buy for most people - its 2880 x 1800 OLED display crushes the Dell's 1920 x 1080 screen. That said, grab the Dell Inspiron 15 3520 — Intel Core i5-1235U if you need a laptop that's at 3.66 lb and offers upgradeable RAM.
Who should buy each?
Choose the ASUS Zenbook 14 OLED Core Ultra 5 125H) if: you crave a stunning display for photography, need long battery life for travel, or want a lightweight design at just 2.82 lb.
Choose the Dell Inspiron 15 3520 — Intel Core i5-1235U if: you want a more budget-friendly option, plan to upgrade your RAM later, or prefer a larger 15.6" screen for everyday tasks.
Quality Seekers
Higher user rating (4.6★ vs 4.5★) indicates better overall satisfaction
→ Choose ASUS Zenbook
Safe Choice Buyers
More widely tested with 2,701 reviews vs 16
→ Choose Dell Inspiron
Premium Buyers
Higher-tier option with more premium features and build quality
→ Choose ASUS Zenbook
Value Seekers
Better value proposition for buyers who don't need top-tier features
→ Choose Dell Inspiron
Conclusion
We hope this comparison helps you buy with confidence. Both products are dependable; the right one depends on how you will use it.
Bottom line: The ASUS Zenbook 14 OLED Core Ultra 5 125H) edges ahead with a 4.6★ rating compared to 4.5★. However, Dell Inspiron 15 3520 — Intel Core i5-1235U remains a strong contender if its strengths align better with your needs.
Frequently Asked Questions
+Which is better: ASUS Zenbook 14 OLED Core Ultra 5 125H) or Dell Inspiron 15 3520 — Intel Core i5-1235U?
ASUS Zenbook 14 OLED Core Ultra 5 125H) is the better choice if you prioritize stunning 120hz oled touchscreen with verified hdr brightness. Dell Inspiron 15 3520 — Intel Core i5-1235U wins if you value 120hz refresh rate provides smoother scrolling than typical 60hz budget laptops. Both are rated highly (4.6★ vs 4.5★), so consider your specific needs and budget.
+What are the main differences between ASUS Zenbook 14 OLED Core Ultra 5 125H) and Dell Inspiron 15 3520 — Intel Core i5-1235U?
Key differences: ASUS Zenbook 14 OLED Core Ultra 5 125H) offers stunning 120hz oled touchscreen with verified hdr brightness, while Dell Inspiron 15 3520 — Intel Core i5-1235U stands out with 120hz refresh rate provides smoother scrolling than typical 60hz budget laptops. Consider that ASUS Zenbook 14 OLED Core Ultra 5 125H) glossy screen handles reflections poorly in bright environments. Meanwhile, Dell Inspiron 15 3520 — Intel Core i5-1235U most high-volume us retail configurations (e.g., best buy) lack a usb-c port. Check the detailed specs table above for a complete comparison.
+Where can US buyers get the best price?
For US buyers, Amazon typically offers competitive pricing with Prime shipping, easy returns, and reliable warranty support. We recommend comparing prices on both products using our affiliate links above—prices fluctuate regularly, and you may find sales or deals.
+Is this comparison up to date?
Yes, this comparison is current for 2026. We regularly verify specs, ratings, and availability. Last verified: January 26, 2026. PageBen uses affiliate links for monetization, but our recommendations are research-driven and independent.
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