Evaluated Razer's latest Blade 18 model, assessing heat and sound output - is the RTX 5090 gaming laptop a space heater or top-tier performer?
Razer Blade 18 (2025): A High-Performance Gaming Laptop with Impressive Cooling System
Razer, a renowned manufacturer of gaming devices, has released the latest iteration of its Blade 18 series. This high-end gaming laptop, now in its 2025 model, comes with an NVIDIA GeForce RTX 5090 laptop GPU and an "Arrow Lake" Core Ultra 9 275HX processor.
During idle state or while watching a muted YouTube video, the fans reach approximately 36.3 dBA at 1600 RPM. However, during more demanding tasks, the fans ramp up significantly. For instance, during a benchmark in Cyberpunk 2077 with DLSS 4, the GPU sensor reached 74°C, and the CPU read around 84°C.
The laptop's cooling system is impressive, with the vapor chamber pushing cool air into mirrored spots above the 'Esc' key and the higher end of the number pad, measuring around 27.3°C. The middle of the keyboard was detected at around 37.8°C, and the hinge-mounted vent exhausts recycled air at 44.1°C. Externally, the "wrist rest" areas of the chassis measured 39.3°C during the same benchmark. The lower chassis of the laptop was detected at around 33.9°C during an almost-idle state.
The fans of the laptop max out at 3000 RPM during demanding tasks, such as the benchmark in Cyberpunk 2077. Manually setting the fans to their maximum at 4600 RPM in Razer Synapse peaks at around 66.1 dBA. The fan noise during this benchmark was described as "loud - tornado loud". Moving to 3000 RPM sees the noise jump to 52.1 dBA, and benchmarking 3DMark pushes the fans to 3300 RPM, increasing noise slightly to 54.2 dBA.
The Razer Blade 18 is known for its high prices, but a discount brings the starting cost down to $2,999.99 for a 5070 Ti model. However, it's worth noting that the laptop does not offer Mini LED or OLED options, which could be a potential issue for some users.
Despite the high prices, the Razer Blade 18 (2025) offers impressive performance and a robust cooling system, making it a solid choice for serious gamers. The laptop was tested with a 400W GaN charger and Razer Synapse software, ensuring optimal performance and customisation options.
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