Acer · Predator Helios
Acer Predator Helios 18 AI (2026)
Flagship desktop-replacement · 2025-Q4 / 2026
Acer's 18-inch flagship pairs full 175 W RTX 5090/5080 GPUs and a 24-core Arrow Lake-HX CPU with a 250 Hz Mini-LED panel and class-leading upgradeability (four RAM slots, three M.2). The honest catch is thermals: reviewers measure CPU throttling in Performance mode, a GPU hotspot near 105 °C and very loud Turbo-mode fans. A genuine desktop replacement where serviceability and the screen are the draw, not quiet sustained performance.
Pros
- Full 175 W RTX 5090 / 5080
- Class-leading upgradeability (4 RAM, 3 M.2)
- 250 Hz Mini-LED, ~700 nits
- Thunderbolt 5 + Wi-Fi 7
Cons
- CPU throttles in Performance mode
- Extremely loud in Turbo
- GPU hotspot near 105 °C
- SSD throttles under sustained load
Also in
Configurations
RTX 5090 · Core Ultra 9 275HX
Core Ultra 9 275HX · GeForce RTX 5090 Laptop (24 GB) · up to 175 W
~€6,000 (RTX 5090 config).
RTX 5080 · Core Ultra 9 275HX
Core Ultra 9 275HX · GeForce RTX 5080 Laptop (16 GB) · up to 175 W
~€3,999.
Display
- Size
- 18"
- Panel
- Mini LED
- Resolution
- 2560×1600 (WQXGA)
- Refresh rate
- 250
- Brightness
- ~700 nits (measured)
- HDR
- Yes
- G-Sync / VRR
- Adaptive Sync + VRR
- Options
- 2560×1600 Mini-LED 250 Hz or 3840×2400 IPS 120 Hz (SKU-dependent)
Memory & Upgradeability
- Installed RAM
- 32 GB (2×16 GB)
- Type
- DDR5 (5600 MT/s)
- Max RAM
- 256 GB
- Upgradeable
- Yes
- Soldered
- No
- SO-DIMM slots
- 4
- M.2 SSD slots
- 3
- Storage
- Full (3× M.2 PCIe 4.0)
Thermals & Noise
- Liquid metal
- Yes
- Throttling
- CPU throttles in Performance mode (below-average sustained CPU power); GPU hotspot near 105 °C and extreme fan noise in Turbo (Notebookcheck, Reddit).
Battery
- Capacity
- 99 Wh
- USB-C charging
- USB-C (Thunderbolt 5)
Connectivity & I/O
- Ethernet
- 2.5 GbE (Killer E5000)
- HDMI
- HDMI 2.1
- USB-A
- 1× USB-A 5 Gbps + 4× USB-A 10 Gbps
- USB-C
- 1× USB-C (PD)
- Thunderbolt
- 2× Thunderbolt 5
- SD reader
- Full SD
- Wi-Fi
- Wi-Fi 7 (Killer BE1750x)
- Bluetooth
- BT 5.4
Build & Design
- Materials
- Plastic (base + lid)
- Weight
- 3.50 kg
- Thickness
- 29.55 mm
- Keyboard
- Chiclet per-key RGB (WASD caps)
- RGB
- Per-key RGB
- Build quality
- Good
- Repairability
- High (4× RAM, 3× M.2)
- Upgradeability score
- 9/10
Reliability & common issues
- CPU thermalsmoderate
CPU thermal throttling in Performance mode with below-average sustained CPU power (multiple reviews, Reddit).
- GPU temps / noisemoderate
GPU hotspot reported reaching ~105 °C at Turbo; fan noise is extreme in Turbo mode.
- Misclow
SSD throttles under prolonged load; lid hinges close too easily; slow 5 GHz Wi-Fi band.
FAQ
What GPU does the Acer Predator Helios 18 AI (2026) have?
It is offered with the RTX 5090 and RTX 5080 (NVIDIA GeForce RTX 50-series). 2 configurations are listed.
Is the RAM upgradeable on the Acer Predator Helios 18 AI (2026)?
Yes — the RAM is user-upgradeable up to 256 GB across 4 SO-DIMM slots.
Sources & data quality
Compiled from manufacturer specs and independent reviews. Last verified 29 Jun 2026. Unknown values are left blank rather than guessed.
Recorded conflicts
- CPU TDP: 115 W PL2 (Notebookcheck review) vs 140 W PL2 in Turbo mode (Notebookcheck Polska) — both real, depending on the active power profile.
- Display: Two display SKUs exist: 2560×1600 Mini-LED 250 Hz (review unit) and 3840×2400 IPS 120 Hz; specs here reflect the confirmed 2560×1600/250 Hz panel.
