ASRock showcases DeskMini Q870 PSU-sized mini PC with desktop-grade Intel Core Ultra 9 285 processor
Computex 2025ASRock is expanding its DeskMini portfolio with systems sporting Mini-STX motherboards. The Mini-STX standard is even more compact than Mini-ITX, and, thanks to ASRock’s new Q870M-STX motherboards, it now supports powerful desktop-grade processors from the Intel Arrow Lake generation.
The latest Mini-STX systems were showcased this week at ASRock’s Computex booth and Winfuture.de was there to snap some pics and get a hands-on first look. As we can see from their pics, the Q870 system is the size of an ATX power supply measuring 155 x 155 x 80 mm, while the case has a volume of 1.92 L. The demo model was powered by a Core Ultra 9 285 desktop CPU with 8 Performance cores and 16 Efficiency cores for a total of 24 threads boosting to 5.6 GHz max. This processor has a default TDP of 65 W with a maximum TDP of 182 W, but the Mini-STX system certainly cannot sustain the boost TDP since its external power adapter is only rated for 120 W. Typical power draw appears to sit around 43.9 W.
Port selection has not been revealed officially, but we can easily identify the ports from the available images. Since the Arrow Lake processor only integrates an Intel Graphics GPU with 4 Xe cores, presumably the Q870 mini PC comes with Thunderbolt 4 connectors to allow for eGPUs. Indeed, we can identify two USB-C ports(1 in front, 1 on the rear), of which at least one has TB4 specs. Other ports include 3x USB-A 3.2, 2x DP, HDMI 2.1, mic and headphone jacks and a LAN jack (most likely 2.5 GbE).
Additionally, the spec sheet mentions support for the advanced CSODIMM RAM modules. The demoed model featured 32 GB DDR5-6400 RAM, but maximum supported capacity goes up to 128 GB via two slots. Strangely enough, the storage side was handled by an old MP33 PCIe 3.0 256 GB SSD from TeamGroup, yet the motherboard probably packs at least a PCIe 4.0 X4 M.2 slot. As an aesthetic bonus, the motherboard and the CPU cooler feature support for RGB lighting.
No pricing information for now and no word on an AMD Mini-STX model either.
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