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 | 4.2★ (111 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 | ★4.2(111)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)
Safe Choice Buyers
More widely tested with 111 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
With the key differences outlined, the decision should be clearer. Both options deliver quality—choose the one that fits your priorities.
Bottom line: Both products share a 4.2★ rating, making this comparison particularly close. Your decision should come down to which specific features matter most to you.
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 (4.2★ 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.
+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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