Acer Aspire 5 15 Slim Laptop (A515-58M-7570, i7-1355U) vs Lenovo IdeaPad Flex 5 14" 2-in-1
The Acer Aspire 5 15 Slim Laptop (A515-58M-7570, i7-1355U) edges out the Lenovo IdeaPad Flex 5 14" 2-in-1 mainly due to its larger display size of 15.6 inches compared to 14 inches. This extra screen real estate can be a game-changer for productivity, especially if you're juggling multiple windows or using design software. However, the Flex 5 packs a versatile 360-degree hinge, making it great for presentations or casual use in tablet mode. 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 Slim Laptop (A515-58M-7570, 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★ (120 reviews) | 4.2★ (21 reviews) |
| Top Strength | Thunderbolt 4 support (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 | Display color gamut is limited to 45% NTSC, resulting in less vibrant colors |
| Market Position | Mid-range | Mid-range |
Acer Aspire 5 15 Slim Laptop (A515-58M-7570, i7-1355U)
Intel Core i7-1355U (10-core: 2P + 8E), 1.70 GHz base, up to 5.0 GHz turbo
Intel Iris Xe Graphics (integrated; shared memory)
No (Not supported)
TwinAir Cooling (dual copper thermal pipes, dual fans, air inlet keyboard)
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 Slim Laptop (A515-58M-7570, i7-1355U) vs Lenovo IdeaPad Flex 5 14" 2-in-1
Acer Aspire 5 15 Slim Laptop (A515-58M-7570, i7-1355U)
Lenovo IdeaPad Flex 5 14" 2-in-1
| Criterion | Acer Aspire 5 15 Slim Laptop (A515-58M-7570, i7-1355U) | Lenovo IdeaPad Flex 5 14" 2-in-1 |
|---|---|---|
| Rating | ★4.3(120)Amazon | ★4.2(21)Amazon |
Processor | Intel Core i7-1355U (10-core: 2P + 8E), 1.70 GHz base, up to 5.0 GHz turbo | AMD Ryzen 7 7730U (Barcelo-R, 8 cores, up to 4.5 GHz) |
Graphics | Intel Iris Xe Graphics (integrated; shared memory) | AMD Radeon Graphics (Integrated) |
AI Engine | No (Not supported) | No (Not supported) |
Cooling | TwinAir Cooling (dual copper thermal pipes, dual fans, air inlet keyboard) | Air (Single fan) |
RAM | 16 GB LPDDR5 (Onboard) | 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 2280 PCIe Gen4 slot) | 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 (LCD; LED-backlit; ComfyView; Anti-glare) | IPS (Glossy; Touchscreen) |
Refresh Rate | 60 Hz | 60 Hz |
Brightness | 250 nits (Typical) | 300 nits |
Color Gamut | 45% NTSC (Typical) | 45% NTSC (approx. 60% sRGB) |
Keyboard Layout | US Standard (QWERTY) | US English (ANSI) without NumPad |
Keyboard Backlight | Yes | Yes |
Biometrics | Fingerprint reader (Touchpad integrated) | Fingerprint reader (Palm rest) |
Webcam | 1080p FHD webcam with Temporal Noise Reduction (TNR) | 1080p FHD camera with Privacy Shutter |
USB Ports | 1x USB-C (Thunderbolt 4 / USB4 / Power Delivery / DisplayPort); 2x USB-A 3.2 Gen 1 (one with power-off charging) | 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 | 1x HDMI 1.4b (Supports up to 4K@30Hz) |
Audio Ports | 1x 3.5mm Combo Audio 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 | 3-cell Li-Ion (50 Wh) | 52.5 Wh (Polymer) |
Charger | 65 W AC adapter (Barrel pin) | 65 W Round Tip (Barrel connector) adapter |
Weight | 1.78 kg (3.92 lbs) | 1,550 g (3.42 lbs) |
Build Material | Aluminum top cover; Plastic chassis (Steel Gray) | PC-ABS + 40% GF (Plastic chassis) |
Operating System | Windows 11 Home | Windows 11 Home |
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Acer Aspire 5 15 Slim Laptop (A515-58M-7570, i7-1355U)
Intel Core i7-1355U (10-core: 2P + 8E), 1.70 GHz base, up to 5.0 GHz turbo
Intel Iris Xe Graphics (integrated; shared memory)
No (Not supported)
TwinAir Cooling (dual copper thermal pipes, dual fans, air inlet keyboard)
16 GB LPDDR5 (Onboard)
No (Soldered)
Pros
- Thunderbolt 4 support (rare in this price bracket)
- 1080p webcam with noise reduction
Cons
- RAM is soldered and cannot be upgraded
- Display has limited color gamut (45% NTSC) and average brightness
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 Slim Laptop (A515-58M-7570, i7-1355U) is the better buy for most people - its 15.6" display crushes the Flex 5's 14" screen. That said, grab the Lenovo IdeaPad Flex 5 if you want a versatile 2-in-1 experience - it's lighter at 3.42 lb.
Who should buy each?
Choose the Acer Aspire 5 15 Slim Laptop (A515-58M-7570, i7-1355U) if: you need a larger screen for multitasking, prefer Thunderbolt 4 support, or want a decent webcam for video calls.
Choose the Lenovo IdeaPad Flex 5 14" 2-in-1 if: you want a convertible design for presentations, need a slightly longer battery life, or prefer a lighter laptop for portability. (14" display, 54.67 oz weight)
Quality Seekers
Higher user rating (4.3★ vs 4.2★) indicates better overall satisfaction
→ Choose Acer Aspire
Safe Choice Buyers
More widely tested with 120 reviews vs 21
→ Choose Acer Aspire
Thunderbolt 4 support Priority
Thunderbolt 4 support (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
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 Acer Aspire 5 15 Slim Laptop (A515-58M-7570, 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 Slim Laptop (A515-58M-7570, i7-1355U) or Lenovo IdeaPad Flex 5 14" 2-in-1?
Acer Aspire 5 15 Slim Laptop (A515-58M-7570, i7-1355U) is the better choice if you prioritize thunderbolt 4 support (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 Slim Laptop (A515-58M-7570, i7-1355U) and Lenovo IdeaPad Flex 5 14" 2-in-1?
Key differences: Acer Aspire 5 15 Slim Laptop (A515-58M-7570, i7-1355U) offers thunderbolt 4 support (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 Slim Laptop (A515-58M-7570, i7-1355U) ram is soldered and cannot be upgraded. 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.
+What should I prioritize when choosing between these laptops?
Focus on the features that matter most for your daily use. Acer Aspire 5 15 Slim Laptop (A515-58M-7570, i7-1355U) stands out for thunderbolt 4 support (rare in this price bracket) and 1080p webcam with noise reduction. Lenovo IdeaPad Flex 5 14" 2-in-1 excels at versatile 360-degree hinge allows for laptop, tent, stand, and tablet modes and modern 16:10 wuxga (1920x1200) resolution provides more vertical screen real estate. Check the spec table above for the complete side-by-side breakdown.
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