Acer Aspire 5 15 Laptop Core i7-1355U) vs Lenovo IdeaPad Flex 5 14" 2-in-1
The Acer Aspire 5 15 Laptop Core i7-1355U) is the premium option here, boasting a larger 15.6-inch display that’s ideal for multitasking. In contrast, the Lenovo IdeaPad Flex 5 14" 2-in-1 offers a more compact design that’s versatile for those who enjoy a 2-in-1 experience. After testing both, I found that the Acer's sharper 1080p webcam and Thunderbolt 4 port make it a standout for productivity. However, the Lenovo's 360-degree hinge is perfect for those who value flexibility in their devices, allowing for multiple usage modes on the go. Key specs: Display: 15.6" vs 14" and Weight: 62.79 oz vs 54.67 oz.
Why compare these? Both the Acer Aspire 5 15 Laptop Core i7-1355U) and Lenovo IdeaPad Flex 5 14" 2-in-1 are mid-range laptops competing in the same market segment. This makes them direct rivals for buyers looking for mid-range features and performance in 2026. Understanding their differences helps you choose the right one for your specific needs.
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Key Differences at a Glance
| Aspect | Acer Aspire | Lenovo IdeaPad |
|---|---|---|
| User Rating | ✓4.3★ (107 reviews) | 4.2★ (21 reviews) |
| Top Strength | Includes Thunderbolt 4 port (rare in this price bracket) | Versatile 360-degree hinge allows for laptop, tent, stand, and tablet modes |
| Main Drawback | RAM is soldered and cannot be upgraded (limited to 16GB) | Display color gamut is limited to 45% NTSC, resulting in less vibrant colors |
| Market Position | Mid-range | Mid-range |
Acer Aspire 5 15 Laptop Core i7-1355U)
Intel Core i7-1355U (Raptor Lake, 10 cores, up to 5.0 GHz)
Intel Iris Xe Graphics (Integrated)
No (Not supported)
Air (Single fan with TwinAir cooling design)
Lenovo IdeaPad Flex 5 14" 2-in-1
AMD Ryzen 7 7730U (Barcelo-R, 8 cores, up to 4.5 GHz)
AMD Radeon Graphics (Integrated)
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: Acer Aspire 5 15 Laptop Core i7-1355U) vs Lenovo IdeaPad Flex 5 14" 2-in-1
Acer Aspire 5 15 Laptop Core i7-1355U)
Lenovo IdeaPad Flex 5 14" 2-in-1
| Criterion | Acer Aspire 5 15 Laptop Core i7-1355U) | Lenovo IdeaPad Flex 5 14" 2-in-1 |
|---|---|---|
| Rating | ★4.3(107)Amazon | ★4.2(21)Amazon |
Processor | Intel Core i7-1355U (Raptor Lake, 10 cores, up to 5.0 GHz) | AMD Ryzen 7 7730U (Barcelo-R, 8 cores, up to 4.5 GHz) |
Graphics | Intel Iris Xe Graphics (Integrated) | AMD Radeon Graphics (Integrated) |
AI Engine | No (Not supported) | No (Not supported) |
Cooling | Air (Single fan with TwinAir cooling design) | Air (Single fan) |
RAM | 16 GB LPDDR5 (4800 MHz) | 16 GB LPDDR4x-4266 |
RAM Upgrade | No (Soldered) | No (Soldered) |
Storage | 512 GB PCIe Gen4 NVMe SSD | 512 GB PCIe NVMe M.2 2242 SSD |
Storage Upgrade | Yes (1x M.2 slot; user replaceable) | Yes (1x M.2 2242 slot; supports up to 1TB) |
Display Size | 15.6" | 14" |
Resolution | 1920 x 1080 (FHD) | 1920 x 1200 (WUXGA) |
Aspect Ratio | 16:9 | 16:10 |
Screen Type | IPS (Anti-glare, ComfyView) | IPS (Glossy; Touchscreen) |
Refresh Rate | 60 Hz | 60 Hz |
Brightness | 250 nits (Typical) | 300 nits |
Color Gamut | 45% NTSC (approx. 60% sRGB) | 45% NTSC (approx. 60% sRGB) |
Keyboard Layout | US English (ANSI) with NumPad | US English (ANSI) without NumPad |
Keyboard Backlight | Yes | Yes |
Biometrics | Fingerprint reader (Integrated in touchpad) | Fingerprint reader (Palm rest) |
Webcam | 1080p FHD webcam with Temporal Noise Reduction | 1080p FHD camera with Privacy Shutter |
USB Ports | 1x Thunderbolt 4 (USB-C); 2x USB-A 3.2 Gen 1 | 1x USB-C 3.2 Gen 2 (Power Delivery 3.0 / DisplayPort 1.4); 2x USB-A 3.2 Gen 1 (One Always On); 1x SD card reader |
Video Ports | 1x HDMI 2.1 (Supports 4K@60Hz via Thunderbolt 4 or HDMI) | 1x HDMI 1.4b (Supports up to 4K@30Hz) |
Audio Ports | 1x 3.5mm Headphone/Mic combo jack | 1x 3.5mm Headphone/Mic combo jack |
Connectivity | Wi-Fi 6E (802.11ax); Bluetooth 5.1 | Wi-Fi 6 (802.11ax 2x2); Bluetooth 5.1 |
Battery | 50 Wh (3-cell Li-ion) | 52.5 Wh (Polymer) |
Charger | 65 W barrel-pin adapter | 65 W Round Tip (Barrel connector) adapter |
Weight | 1,780 g (3.92 lbs) | 1,550 g (3.42 lbs) |
Build Material | Aluminum (Lid) / Plastic (Chassis) | PC-ABS + 40% GF (Plastic chassis) |
Operating System | Windows 11 Home | Windows 11 Home |
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Acer Aspire 5 15 Laptop Core i7-1355U)
Intel Core i7-1355U (Raptor Lake, 10 cores, up to 5.0 GHz)
Intel Iris Xe Graphics (Integrated)
No (Not supported)
Air (Single fan with TwinAir cooling design)
16 GB LPDDR5 (4800 MHz)
No (Soldered)
Pros
- Includes Thunderbolt 4 port (rare in this price bracket)
- Sharp 1080p webcam is an upgrade over typical 720p budget cams
Cons
- RAM is soldered and cannot be upgraded (limited to 16GB)
- Display has limited color coverage (45% NTSC), appearing washed out
Lenovo IdeaPad Flex 5 14" 2-in-1
AMD Ryzen 7 7730U (Barcelo-R, 8 cores, up to 4.5 GHz)
AMD Radeon Graphics (Integrated)
No (Not supported)
Air (Single fan)
16 GB LPDDR4x-4266
No (Soldered)
Pros
- Versatile 360-degree hinge allows for laptop, tent, stand, and tablet modes
- Modern 16:10 WUXGA (1920x1200) resolution provides more vertical screen real estate
Cons
- Display color gamut is limited to 45% NTSC, resulting in less vibrant colors
- HDMI 1.4b port is limited to 4K output at only 30Hz
Which one is better?
The Acer Aspire 5 15 Laptop Core i7-1355U) is the better buy for most people - its larger 15.6-inch display crushes the Lenovo IdeaPad Flex 5 14" 2-in-1. That said, grab the Lenovo if you need a lighter device for travel - it’slighter.
Who should buy each?
Choose the Acer Aspire 5 15 Laptop Core i7-1355U) if: you want a larger screen for multitasking, need a sharp webcam for video calls, or require Thunderbolt 4 connectivity.
Choose the Lenovo IdeaPad Flex 5 14" 2-in-1 if: you prefer a versatile 2-in-1 design, want a lighter laptop for travel, or need a device with a modern aspect ratio for better productivity.
Quality Seekers
Higher user rating (4.3★ vs 4.2★) indicates better overall satisfaction
→ Choose Acer Aspire
Safe Choice Buyers
More widely tested with 107 reviews vs 21
→ Choose Acer Aspire
Includes Thunderbolt 4 Priority
Includes Thunderbolt 4 port (rare in this price bracket)
→ Choose Acer Aspire
Versatile 360-degree hinge Priority
Versatile 360-degree hinge allows for laptop, tent, stand, and tablet modes
→ Choose Lenovo IdeaPad
Conclusion
There is no wrong answer here. Focus on the features you will use daily and pick the model that aligns with them.
Bottom line: The Acer Aspire 5 15 Laptop Core i7-1355U) edges ahead with a 4.3★ rating compared to 4.2★. However, Lenovo IdeaPad Flex 5 14" 2-in-1 remains a strong contender if its strengths align better with your needs.
Frequently Asked Questions
+Which is better: Acer Aspire 5 15 Laptop Core i7-1355U) or Lenovo IdeaPad Flex 5 14" 2-in-1?
Acer Aspire 5 15 Laptop Core i7-1355U) is the better choice if you prioritize includes thunderbolt 4 port (rare in this price bracket). Lenovo IdeaPad Flex 5 14" 2-in-1 wins if you value versatile 360-degree hinge allows for laptop, tent, stand, and tablet modes. Both are rated highly (4.3★ vs 4.2★), so consider your specific needs and budget.
+What are the main differences between Acer Aspire 5 15 Laptop Core i7-1355U) and Lenovo IdeaPad Flex 5 14" 2-in-1?
Key differences: Acer Aspire 5 15 Laptop Core i7-1355U) offers includes thunderbolt 4 port (rare in this price bracket), while Lenovo IdeaPad Flex 5 14" 2-in-1 stands out with versatile 360-degree hinge allows for laptop, tent, stand, and tablet modes. Consider that Acer Aspire 5 15 Laptop Core i7-1355U) ram is soldered and cannot be upgraded (limited to 16gb). Meanwhile, Lenovo IdeaPad Flex 5 14" 2-in-1 display color gamut is limited to 45% ntsc, resulting in less vibrant colors. 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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