DELL Pro Slim Plus QBS1250 AI Business Desktop PC Ultra 7-265 64GB DDR5 1TB NVMe 260W Win 11 Pro

Business desktop with Intel Ultra 7-265

The Dell Pro Slim Plus QBS1250 is a mid-tower system built for office and AI-assisted workloads. It ships with a 15th Gen Intel Core Ultra 7-265 processor running at 2.40 GHz with up to 5.3 GHz boost, 20 cores and 20 threads. Integrated Intel Graphics handles display output across three DisplayPort connections. The 64 GB DDR5 memory and 1 TB NVMe SSD provide a responsive platform for multitasking and local data storage.

Sustained workload behaviour

The 260 W power supply delivers stable power for continuous business applications and AI inference tasks. The 20-core processor maintains performance during extended compile, render or analytics jobs without the thermal throttling typical of smaller chassis. Integrated graphics share system memory, so the large 64 GB DDR5 pool supports both compute and frame-buffer demands simultaneously. The mid-tower form factor allows airflow that keeps component temperatures consistent over long sessions.

Thermals noise and power

A 260 W PSU limits maximum draw, keeping energy costs predictable for fleet deployments. The mid-tower layout with 12 x 12.25 x 4 in dimensions provides sufficient internal volume for quiet fan curves under typical office loads. Acoustic output remains low during standard productivity work, rising only when all 20 cores sustain peak frequency. The system weighs 9.6 lb, making it easy to reposition on or under a desk without specialised handling.