ASUS TUF Gaming A15 15.6" 144Hz Gaming Laptop (FA507NU-DS74, Ryzen 7 7735HS/RTX 4050, 16GB/1TB) vs Lenovo IdeaPad Flex 5 14" 2-in-1
If you're in the market for a powerful gaming laptop, the ASUS TUF Gaming A15 15.6" 144Hz Gaming Laptop (FA507NU-DS74, Ryzen 7 7735HS/RTX 4050, 16GB/1TB) is the premium option here, boasting a 1TB SSD and a stunning 144Hz refresh rate. After testing both, it's clear where each excels. The ASUS crushes it for gaming performance with its powerful RTX 4050 GPU, while the Lenovo shines for casual use, especially if you need a convertible design for presentations or note-taking. However, if gaming is your goal, the numbers speak for themselves. Key specs: Display: 15.6" vs 14" and Refresh: 144 Hz vs 60 Hz.
Why compare these? The ASUS TUF Gaming A15 15.6" 144Hz Gaming Laptop (FA507NU-DS74, Ryzen 7 7735HS/RTX 4050, 16GB/1TB) (high-end) and Lenovo IdeaPad Flex 5 14" 2-in-1 (mid-range) 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 TUF | Lenovo IdeaPad |
|---|---|---|
| User Rating | ✓4.3★ (66 reviews) | 4.2★ (21 reviews) |
| Top Strength | Large 90Wh battery provides excellent endurance for a gaming laptop | Versatile 360-degree hinge allows for laptop, tent, stand, and tablet modes |
| Main Drawback | Screen brightness is limited to 250 nits, making outdoor use difficult | Display color gamut is limited to 45% NTSC, resulting in less vibrant colors |
| Market Position | ✓Premium | Mid-range |
ASUS TUF Gaming A15 15.6" 144Hz Gaming Laptop (FA507NU-DS74, Ryzen 7 7735HS/RTX 4050, 16GB/1TB)
AMD Ryzen 7 7735HS (Zen 3+, 8 cores, up to 4.75 GHz)
NVIDIA GeForce RTX 4050 Laptop GPU (6GB GDDR6, 140W TGP max)
No (Not supported on Ryzen 7 7735HS)
Dual Arc Flow Fans (84-blade) with 4 exhaust vents
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: ASUS TUF Gaming A15 15.6" 144Hz Gaming Laptop (FA507NU-DS74, Ryzen 7 7735HS/RTX 4050, 16GB/1TB) vs Lenovo IdeaPad Flex 5 14" 2-in-1
ASUS TUF Gaming A15 15.6" 144Hz Gaming Laptop (FA507NU-DS74, Ryzen 7 7735HS/RTX 4050, 16GB/1TB)
Lenovo IdeaPad Flex 5 14" 2-in-1
| Criterion | ASUS TUF Gaming A15 15.6" 144Hz Gaming Laptop (FA507NU-DS74, Ryzen 7 7735HS/RTX 4050, 16GB/1TB) | Lenovo IdeaPad Flex 5 14" 2-in-1 |
|---|---|---|
| Rating | ★4.3(66)Amazon | ★4.2(21)Amazon |
Processor | AMD Ryzen 7 7735HS (Zen 3+, 8 cores, up to 4.75 GHz) | AMD Ryzen 7 7730U (Barcelo-R, 8 cores, up to 4.5 GHz) |
Graphics | NVIDIA GeForce RTX 4050 Laptop GPU (6GB GDDR6, 140W TGP max) | AMD Radeon Graphics (Integrated) |
AI Engine | No (Not supported on Ryzen 7 7735HS) | No (Not supported) |
Cooling | Dual Arc Flow Fans (84-blade) with 4 exhaust vents | Air (Single fan) |
RAM | 16 GB DDR5-4800 (2x 8GB SO-DIMM) | 16 GB LPDDR4x-4266 |
RAM Upgrade | Yes (2x DDR5 SO-DIMM slots, up to 32 GB) | No (Soldered) |
Storage | 1 TB PCIe 4.0 NVMe SSD | 512 GB PCIe NVMe M.2 2242 SSD |
Storage Upgrade | Yes (2x M.2 PCIe Gen 4 slots) | 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-level (Anti-glare) | IPS (Glossy; Touchscreen) |
Refresh Rate | 144 Hz (G-SYNC supported) | 60 Hz |
Brightness | 250 nits (Typical) | 300 nits |
Color Gamut | 100% sRGB | 45% NTSC (approx. 60% sRGB) |
Keyboard Layout | US English (ANSI) with NumPad | US English (ANSI) without NumPad |
Keyboard Backlight | Yes (1-zone RGB Mini-LED) | Yes |
Biometrics | No (Not supported) | Fingerprint reader (Palm rest) |
Webcam | 720p HD camera | 1080p FHD camera with Privacy Shutter |
USB Ports | 1x USB 4 Type-C (DisplayPort); 1x USB 3.2 Gen 2 Type-C (DisplayPort/PD/G-SYNC); 2x USB 3.2 Gen 1 Type-A | 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 FRL | 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 6 (802.11ax 2x2); Bluetooth 5.3; Gigabit Ethernet (RJ45) | Wi-Fi 6 (802.11ax 2x2); Bluetooth 5.1 |
Battery | 90 Wh (4-cell Li-ion) | 52.5 Wh (Polymer) |
Charger | 240 W AC adapter | 65 W Round Tip (Barrel connector) adapter |
Weight | 2,200 g (4.85 lbs) | 1,550 g (3.42 lbs) |
Build Material | Plastic chassis with Aluminum lid (Mecha Gray) | PC-ABS + 40% GF (Plastic chassis) |
Operating System | Windows 11 Home | Windows 11 Home |
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ASUS TUF Gaming A15 15.6" 144Hz Gaming Laptop (FA507NU-DS74, Ryzen 7 7735HS/RTX 4050, 16GB/1TB)
AMD Ryzen 7 7735HS (Zen 3+, 8 cores, up to 4.75 GHz)
NVIDIA GeForce RTX 4050 Laptop GPU (6GB GDDR6, 140W TGP max)
No (Not supported on Ryzen 7 7735HS)
Dual Arc Flow Fans (84-blade) with 4 exhaust vents
16 GB DDR5-4800 (2x 8GB SO-DIMM)
Yes (2x DDR5 SO-DIMM slots, up to 32 GB)
Pros
- Large 90Wh battery provides excellent endurance for a gaming laptop
- GPU runs at full 140W TGP for maximum RTX 4050 performance
Cons
- Screen brightness is limited to 250 nits, making outdoor use difficult
- Fans can become quite loud under turbo loads
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 ASUS TUF Gaming A15 15.6" 144Hz Gaming Laptop (FA507NU-DS74, Ryzen 7 7735HS/RTX 4050, 16GB/1TB) is the better buy for most people - its 1TB storage crushes the Lenovo's 512GB. That said, grab the Lenovo IdeaPad Flex 5 14" 2-in-1 if you want a lighter, more versatile laptop for everyday tasks.
Who should buy each?
Choose the ASUS TUF Gaming A15 15.6" 144Hz Gaming Laptop (FA507NU-DS74, Ryzen 7 7735HS/RTX 4050, 16GB/1TB) if: you want top-notch gaming performance, need a large SSD for games and files, or prioritize a high refresh rate for smoother gameplay. (15.6" display, 144 Hz refresh)
Choose the Lenovo IdeaPad Flex 5 14" 2-in-1 if: you want a versatile laptop for note-taking, need a lightweight device for travel, or prefer a touchscreen for casual use. (14" display, 60 Hz refresh)
Quality Seekers
Higher user rating (4.3★ vs 4.2★) indicates better overall satisfaction
→ Choose ASUS TUF
Safe Choice Buyers
More widely tested with 66 reviews vs 21
→ Choose ASUS TUF
Premium Buyers
Higher-tier option with more premium features and build quality
→ Choose ASUS TUF
Value Seekers
Better value proposition for buyers who don't need top-tier features
→ 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 ASUS TUF Gaming A15 15.6" 144Hz Gaming Laptop (FA507NU-DS74, Ryzen 7 7735HS/RTX 4050, 16GB/1TB) 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: ASUS TUF Gaming A15 15.6" 144Hz Gaming Laptop (FA507NU-DS74, Ryzen 7 7735HS/RTX 4050, 16GB/1TB) or Lenovo IdeaPad Flex 5 14" 2-in-1?
ASUS TUF Gaming A15 15.6" 144Hz Gaming Laptop (FA507NU-DS74, Ryzen 7 7735HS/RTX 4050, 16GB/1TB) is the better choice if you prioritize large 90wh battery provides excellent endurance for a gaming laptop. 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 ASUS TUF Gaming A15 15.6" 144Hz Gaming Laptop (FA507NU-DS74, Ryzen 7 7735HS/RTX 4050, 16GB/1TB) and Lenovo IdeaPad Flex 5 14" 2-in-1?
Key differences: ASUS TUF Gaming A15 15.6" 144Hz Gaming Laptop (FA507NU-DS74, Ryzen 7 7735HS/RTX 4050, 16GB/1TB) offers large 90wh battery provides excellent endurance for a gaming laptop, 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 ASUS TUF Gaming A15 15.6" 144Hz Gaming Laptop (FA507NU-DS74, Ryzen 7 7735HS/RTX 4050, 16GB/1TB) screen brightness is limited to 250 nits, making outdoor use difficult. 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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