I Put an RTX 5090 in a Mini-ITX Case... Is it Too Hot?

Published at : 23 Dec 2025

Is it possible to tame the massive RTX 5090 inside a Mini-ITX form factor? Today, we are building the ultimate SFF PC using the exotic XiKii FF07 open-frame chassis.

We are pairing the gaming king, the AMD Ryzen 7 9800X3D, with the brand new ASUS ROG RTX 5090 "Night Edition." To power this compact monster, we're using the ROG Loki 1200W Titanium PSU.

This build tests the limits of density, thermal management, and aesthetic perfection. Watch the full assembly process and see how the ID-COOLING low-profile cooler handles the heat!

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➤Specification:

Motherboard: ASUS ROG STRIX X870-I Gaming WiFi
Buy: https://amzn.to/3Xgp5dh
Ram: G.SKILL Trident Z5 Neo RGB 32GB (2x16GB)
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CPU: AMD Ryzen 7 9800X3D
Buy: https://amzn.to/48ogg6l
Cooler: ID-COOLING IS-67-XT Black
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SSD: Samsung 9100 Pro 2TB NVMe SSD
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GPU: ASUS ROG Astral GeForce RTX™ 5090
Buy: https://amzn.to/4rneue4
Casing: XiKii Industry FF07
Power Supply: ASUS ROG Loki 1200W 80+ Titanium (SFX-L)
Buy: https://amzn.to/4ikLcsJ

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Author: 我是机叔

⏱️ TIMESTAMPS:

0:00 Intro
0:10 Components
3:00 Build
5:15 Showcase
5:52 Bios
6:09 Fps Test(2K)

#SFF #ITXBuild #RTX5090 #XiKii #PCBuild #9800X3D #GamingPC