When it comes to budget gaming laptops, ASUS TUF series has remained a go-to option for years. Among the most talked-about models are the ASUS TUF FX504, FX505, FX80, FX80GD, FX86, FX86FM, and FX86FE. These machines offer a range of configurations that strike a balance between affordability, performance, and durability. In this comparison, we dive into their design, performance, thermals, display quality, and upgradability—alongside a crucial accessory all these models share: the B31N1726 ASUS FX504 FX505 FX80 FX80GD FX86 FX86FM FX86FE 11.4V 48Wh Replacement Laptop Battery.
1. Design & Build Quality
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FX504: Rugged, thick bezels, and a design that feels solid yet slightly bulky. A sturdy choice, especially for students or frequent travelers.
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FX505: A more modern look with thinner bezels and a lighter profile. This model appeals to gamers who prioritize a sleeker chassis without compromising durability.
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FX80/FX86 Series: These share the robust aesthetics of the TUF lineup, with slight tweaks and better thermal designs. Common among these is the ease of battery and component replacement—making them long-term friendly devices.
A great companion to keep them going strong is the B31N1726 ASUS FX504 FX505 FX80 FX80GD FX86 FX86FM FX86FE 11.4V 48Wh Replacement Laptop Battery, compatible across this entire range.
2. Display & Visuals
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FX504: Comes with a 120 Hz TN panel, which provides smooth visuals but has limited viewing angles.
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FX505: An upgrade with IPS 144 Hz options, delivering vivid colors and wide viewing angles—ideal for content consumption and gaming.
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FX80/FX86: Also transitioned to IPS panels, offering better contrast and clarity.
If you’re investing in one of these for immersive visuals, make sure your battery is up to the task. The B31N1726 ASUS FX504 FX505 FX80 FX80GD FX86 FX86FM FX86FE 11.4V 48Wh Replacement Laptop Battery ensures consistent screen performance and longer unplugged sessions.
3. Performance & Hardware
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FX504: Built on Intel’s Coffee Lake platform, it supports GPUs up to the GTX 1060. Solid for most mid-level gaming needs.
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FX505: Takes things a step further with Ryzen options and NVMe SSD support, improving boot and load times dramatically.
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FX86 Series: Packs the i7‑8750H + GTX 1050 combo—a balanced setup for multitasking and gaming alike.
For extended gaming or rendering sessions, a reliable power source is critical. The B31N1726 ASUS FX504 FX505 FX80 FX80GD FX86 FX86FM FX86FE 11.4V 48Wh Replacement Laptop Battery provides the stamina you need when you're away from a wall outlet.
4. Storage, RAM, and Upgradability
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FX504: Often includes a 256GB SSD + 1TB HDD hybrid setup.
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FX505: Offers both SATA and NVMe variants (AMD versions being more performant).
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FX80/FX86: Generally come with NVMe support and 16GB RAM, making them future-proof and snappy.
All these models make battery replacement and memory upgrades easy—ideal for tech-savvy users who want more control over their system longevity.
5. Thermal Performance
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FX504: Dual-fan cooling system with anti-dust design, but tends to get hot under heavy loads.
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FX505 & FX86 Series: Improved thermal architecture and quieter fans under stress. A better choice for those doing long gaming or rendering sessions.
6. Ports & Connectivity
Across the board, these models offer:
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Multiple USB-A ports
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HDMI
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Ethernet (LAN)
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Audio combo jack
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M.2 slots for expansion
Some lack USB-C, but offer enough legacy ports for most use cases.
7. Battery Life
All models, including the FX504, FX505, and FX86 variants, feature a 48Wh battery. Real-world battery life is average—about 4–6 hours under light use.
For those needing replacements after years of use, the B31N1726 ASUS FX504 FX505 FX80 FX80GD FX86 FX86FM FX86FE 11.4V 48Wh Replacement Laptop Battery is an essential upgrade to restore battery life and system reliability.
Final Recommendations
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On a tight budget and prefer a sturdy chassis? Go for the FX504.
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Want a modern look with high-refresh-rate IPS display and SSD speed? Choose the FX505 AMD version.
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Need i7 power and solid GTX 1050 performance without jumping into RTX pricing? The FX86/FX86FM/FX86FE is a solid pick.
No matter which model you pick, remember to check your battery health. A reliable replacement like the B31N1726 ASUS FX504 FX505 FX80 FX80GD FX86 FX86FM FX86FE 11.4V 48Wh Replacement Laptop Battery ensures your TUF laptop stays powerful and portable for years to come.