HP ProDesk 400 G3 DMHP ProDesk 400 G3 Mini PC i7-7700T 8GB 256GB SSD Win 10 Desktop Computer

HP ProDesk 400 G3 Mini PC with Intel Core i7-7700T

A space-saving HP ProDesk 400 G3 Desktop Mini built around a 7th Gen Intel Core i7-7700T quad-core processor, with 8GB of memory, a fast 256GB NVMe solid state drive and Windows 10 installed. This unit is in Grade A (Excellent) condition, fully tested in Melbourne and backed by a 12-month warranty from Reboot IT, with free standard AU shipping.

Key Benefits

• Quad-core Core i7 performance. The Intel Core i7-7700T has 4 cores and 8 threads, an 8MB cache and speeds of up to 3.80GHz, giving plenty of headroom for office applications, browser-based systems and everyday multitasking.
• Energy-conscious 35W T-series processor. Intel's T-series chips are designed for compact systems, delivering Core i7 performance within a 35W power envelope that suits a small-footprint desktop running all day.
• Fast NVMe SSD storage. A 256GB NVMe solid state drive gives quick start-ups, snappy application launches and responsive file access, with no spinning parts to wear out.
• 8GB of memory for daily work. 8GB of RAM comfortably handles email, Microsoft 365, web apps, video calls and a healthy number of browser tabs side by side.
• Compact Mini PC chassis. The ProDesk 400 G3 Mini takes up a fraction of the desk space of a tower, freeing room at reception counters, workstations, classrooms and home offices.
• Ready to plug in and work. Windows 10 is installed and the unit has been tested, cleaned and graded by our Melbourne technicians, so it is ready to connect a monitor, keyboard and mouse and get started.

Performance in Use

The ProDesk range is HP's business desktop family, and the ProDesk 400 G3 Mini packs that business-grade design into a small form factor that is easy to find a home for. At its heart is the Intel Core i7-7700T, a 7th generation Core i7 with four physical cores and Hyper-Threading for eight threads in total. It runs from a base speed of 2.90GHz and can boost up to 3.80GHz when a task demands it, so the machine feels quick when you open a large spreadsheet, switch between a CRM and your inbox, or run a video meeting while a browser full of tabs stays open in the background. For typical office, admin and study workloads, a quad-core i7 like this has capacity to spare.

Storage is where this Mini PC really feels modern. The 256GB NVMe solid state drive loads Windows 10 and your applications far faster than a mechanical hard drive, and files, emails and documents open with very little waiting. For staff who keep most of their work in OneDrive, SharePoint, Google Drive or a line-of-business web application, 256GB comfortably holds the operating system, everyday software and current working files, while larger archives can live in the cloud, on a network share or on an external drive.

The 8GB of memory is well matched to office use. It keeps Microsoft 365, Teams or Zoom, an accounting package such as Xero or MYOB in the browser, and a handful of other applications running together without constant slowdowns. Graphics are handled by the Intel HD Graphics 630 built into the processor, which is well suited to office software, web browsing, video streaming and video calls, although it is not intended for modern gaming or GPU-heavy 3D work.

Because the whole system is so compact, the ProDesk 400 G3 Mini suits places where a full-size tower would be in the way: front desks and reception areas, point-of-sale counters, shared hot desks, classrooms, libraries and small home offices. The 35W T-series processor is designed for small enclosures, making this a practical choice for a machine that stays on through the working day. Pair it with one of our refurbished monitors, a keyboard and a mouse and you have a tidy, capable workstation for a fraction of the cost of a new business desktop.

If you are replacing an older office PC that still boots from a mechanical hard drive, the difference is immediately noticeable. Start-up, sign-in and opening everyday programs happen in a fraction of the time, updates install faster, and switching between applications no longer comes with a pause while the drive catches up. Combined with a quad-core, eight-thread Core i7, that makes this ProDesk a genuine step up for staff who spend their day in email, spreadsheets, cloud platforms and online meetings, and a sensible way to refresh a fleet of desks without the cost of new hardware.

For small businesses equipping several desks at once, schools and training rooms that need dependable machines, or anyone who wants a neat, compact setup at home, this HP ProDesk 400 G3 Mini offers Core i7 performance and fast NVMe storage in a package that is simple to deploy. Every unit is checked by our in-house technicians before dispatch, so you receive a working, clean machine that is ready for productive use from day one.

Tech Specs

Is It Right for You?

Condition Grades

This listing is for a Grade A (Excellent) unit.

Frequently Asked Questions

What processor does this HP ProDesk 400 G3 Mini have?

It has an Intel Core i7-7700T from Intel's 7th generation, with 4 cores, 8 threads, an 8MB cache and speeds from 2.90GHz up to 3.80GHz. It comfortably handles office work, web applications, video calls and everyday multitasking.

How much memory and storage does it have?

This unit has 8GB of RAM and a 256GB NVMe solid state drive, a responsive combination for everyday business, study and home use.

Which operating system is installed?

The PC comes with Windows 10 installed and ready to use. 7th Gen Intel processors such as the i7-7700T sit below Microsoft's official requirements for the newest Windows release, so this unit is supplied with Windows 10. Please note that Microsoft ended standard support for Windows 10 in October 2025.

Is it suitable for Microsoft 365 and video meetings?

Yes. The quad-core i7-7700T, 8GB of RAM and NVMe SSD handle Microsoft 365, web browsers, cloud accounting software and video meetings in Teams or Zoom comfortably. It is a dependable everyday machine for office, admin and study work.

Can it be used for gaming?

It is not designed for gaming. Graphics come from the Intel HD Graphics 630 built into the processor, which is well suited to office software, streaming and video calls, but not to modern 3D games or GPU-heavy workloads.

What does Grade A mean?

Grade A (Excellent) means minimal to no visible marks, with the chassis and casing in excellent cosmetic condition. Every unit is fully tested and working before it leaves our Melbourne warehouse.

Is shipping free and how is the PC tested?

Yes, this PC ships with free standard AU shipping. Before dispatch every unit is fully tested, cleaned, graded and loaded with Windows 10 by our Melbourne technicians.

Warranty & Why Buy From Reboot IT

Every HP ProDesk 400 G3 Mini comes with a 12-month warranty from Reboot IT covering hardware faults under normal use. Reboot IT has been refurbishing and supplying business-grade IT equipment from Melbourne since 2001, and every desktop is professionally tested, cleaned and graded by our in-house technicians before it leaves the warehouse. Each unit is checked for processor, memory, storage and operating system function, then wiped and loaded with a clean installation of Windows 10 so it is ready to set up the day it arrives. If anything goes wrong within the warranty period, our Melbourne team is here to help.

Buying refurbished business hardware is a smart way to get dependable, business-class computers while keeping good equipment in use and out of landfill. Enjoy free standard AU shipping, local Australian support and a team that knows these machines inside out. Visit reboot-it.com.au for more refurbished desktops, laptops and monitors.