AustraIia’s trusted refurbished computers since 2001 – Extra 10% off Red Tag deals

Affordable Tech! Laptops under $200

Shop our range of cheap laptops

1 8

Selling fast!
Grab yours while you can

HP Z4 G4 WORKSTATIONHP Z4 G4 W-2125 4GHz 64GB 512GB SSD DW Quadro P4000 · 3mth Wty

Excellent Grade · Fully tested · No visible marks
SKU: 163284
4.76
★★★★★
708 reviews
12mo
Warranty
30day
Free returns
40+
Tech-tested checks
✓ Fast AU shipping ✓ Pickup: Springvale VIC
Cosmetic grade
$1,650.00 $2,250.00

You save $600

or 4 interest-free payments of $412.50 with

Customize and Upgrade Your Device

Perks you get with every purchase

Warranty
If your item experiences a technical issue, we've got you covered—we'll either repair it or replace it for you!

30 days to change your mind
Feel free to return your item for any reason within the first 30 days of receiving it. It's that easy!

Free express shipping
Enjoy fast, free express shipping on all small items like laptops, tablets, and smartphones!

Customer support
Rest assured, we’ll always respond to you within 1 business day!

Frequently asked questions

What does the warranty cover?

Our warranty covers all hardware faults, but please note it doesn’t cover accidental damage or software issues. However, we’re here to help with technical support for those matters!

What is a refurbished device?

A refurbished device is a pre-owned item that has been restored to meet high-quality standards. At Reboot IT, we adhere to strict quality guidelines, ensuring that our refurbished products are not the same as used or secondhand items. We meticulously clean, test, and assess each device, replacing worn parts with high-quality components.

Unlike used items, which lack guarantees and rely solely on the seller's word regarding condition, refurbished devices come with assurance of quality and reliability.

What payment options are available?

We offer a variety of payment options to make your shopping experience as convenient as possible! You can pay using all major credit cards, Apple Pay, Google Pay, Shop Pay, Afterpay, Zip Pay, and PayPal. If you prefer, we also accept bank deposits and even cash for in-store purchases!

At a Glance

Processor
XEON
Memory
64GB
Display
None
Operating System
Windows 10
Graphics
Quadro P4000

Safe & Secure

  • American Express
  • Apple Pay
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Union Pay
  • Visa

We ensure secure processing of your payment information and do not retain or have access to your credit card details.

Description

Designed for engineering, visualization, and machine learning, the VR-ready Z4 G4 Series Tower Workstation from HP delivers the performance necessary for a wide spectrum of applications, including 3D CAD and rendering, simulation applications, VFX and design visualization, machine learning and edge-computing environments, and other intensive tasks. Its exterior provides tool-free access to a modular interior, while internal cooling solutions help to ensure its components won't overheat. The system is powered by a 4.0 GHz Intel Xeon W-2125 Quad-Core processor and 8.25MB of Intel Smart Cache memory, all of which will allow you to run multiple applications simultaneously and provide significant performance gains when running multi-threaded tasks. If more power is needed, the CPU can deliver extra performance by increasing its clock speed up to 4.5 GHz utilizing Intel's Turbo Boost 2.0 technology.

For long-term storage of your files, this system is equipped with a 512GB NVMe PCIe M.2 SSD. If you want to add external storage drives, optical drives, printers, memory card readers, or other peripherals, the Z4 G4 features ten 5 Gb/s USB 3.1 Gen 1 Type-A ports (4 front, 6 rear), with one of the front Type-A ports doubling as a charging port. There are also two PS/2 ports. Inlcuded is a Quadro P4000 Graphics card.

Specifications
  • Model
    Z4 G4 WORKSTATION
  • Processor
    XEON
  • RAM
    64GB
  • Storage Type
    NVME SSD
  • Screen Size
    None
  • Graphics
    Quadro P4000
  • Operating System
    Windows 10
  • Connectivity
    USB 3.1, DisplayPort
  • Colour
    None

What's in the box
  • HP Z4 G4 Workstation
  • Power cable
  • Tax Invoice
By buying refurbished, you avoid
375kg

of CO₂ vs. manufacturing new

And divert
7.5kg

of e-waste from landfill

Source: HP EliteDesk PCF datasheet — per unit.

Why the Z4 G4 WORKSTATION?

HP Z4 G4 W-2125 4GHz 64GB 512GB SSD DW Quadro P4000 | 3mth Wty
HP Z4 G4 W-2125 4GHz 64GB 512GB SSD DW Quadro P4000 | 3mth Wty

Let customers speak for us

from 708 reviews
HP ZBook 17 G6 E-2186M 2.9GHz 64GB 1TB SSD P5200 17.3" UHD W11P | 1yr Wty
Steven

Product is exactly as described, would have no problem buying again

HP ZBook 17 G6 E-2186M 2.9GHz 64GB 1TB SSD P5200 17.3" UHD W11P | 1yr Wty
Microsoft Surface Pro 5 1796 i5 7300U 2.6GHz 4GB 128GB 12" Touch W10P | Wty
Tuaine

I like and very nice clean

Microsoft Surface Pro 5 1796 i5 7300U 2.6GHz 4GB 128GB 12" Touch W10P | Wty
Memory Upgrade
Wayne

Very easy fit

Memory Upgrade
Apple iPhone XR A2105 128GB White Unlocked Smartphone | Wty
David

Great upgrade phone at a very reasonable price.
Condition as stated in description if not better.

Apple iPhone XR A2105 128GB White Unlocked Smartphone | Wty
Dell Latitude 5520 i5 1135G7 2.4GHz 8GB 256GB SSD 15.6" Touch W11P | Wty
Jason

Great little laptop for school

Dell Latitude 5520 i5 1135G7 2.4GHz 8GB 256GB SSD 15.6" Touch W11P | Wty
Dell Latitude 7210 2-in-1 i5 10210U 1.6GHz 8GB 256GB LTE 12.3" Touch W11P | Wty
Shane

Good value and great quality

Dell Latitude 7210 2-in-1 i5 10210U 1.6GHz 8GB 256GB LTE 12.3" Touch W11P | Wty
HP ProDesk 400 G3 SFF i3 6320 3.9GHz 8GB 500GB NO OS Computer | 1yr Wty
T.B.

Fantastic service

HP ProDesk 400 G3 SFF i3 6320 3.9GHz 8GB 500GB NO OS Computer | 1yr Wty
James Lees
All-in-one Solution for Home Office

I was looking for an in-expensive all-in-one solution for my home office to replace my existing desktop and monitor. I found this EliteOne 800 on reboot IT for under $200. I wasn't sure what to expect. It arrived within two days!!!! I upgraded the RAM, replaced the HDD and installed Windows 11. This is unbeatable value and was the cheapest price online. Coupled with a 3-month warranty, Reboot IT are by far the best online refurbished retailer I have used. Awesome!

Reboot IT
Apple iPad 6th Gen 9.7" 32GB Space Grey Wi-Fi + Cellular A10 Unlocked | Wty
Farley

Great service. Product in great condition and exactly what i want. I wanted this for a specific purpose but i dont need to spend $900 on a new one.

Apple iPad 6th Gen 9.7" 32GB Space Grey Wi-Fi + Cellular A10 Unlocked | Wty
Melinda Panuan
Excellent

Excellent work

Reboot IT
steve maloney
exactly as described and works well

exactly as described and works well , just like the staff down there. 10/10

Reboot IT
Lenovo ThinkPad X1 Carbon G5 i7 6600U 2.6GHz 8GB 256GB 14" W10P | Wty
Anonymous
Very happy

Very happy, thank you

Lenovo ThinkPad X1 Carbon G5 i7 6600U 2.6GHz 8GB 256GB 14" W10P | Wty
Barbara Jenkins Jenkins
Just having trouble greeting it linked to the internet otherwise it’s okay

Just having trouble greeting it linked to the internet otherwise it’s okay.

Reboot IT
Dell XPS 13 7390 2-in-1 i7 1065G7 1.3GHz 16GB 512GB SSD 13.4" Touch W11P | Wty
Anonymous
Fair tech for price

Fair tech for price, good specs for era, serves the purpose. The black keyboard is an interesting rubber like texture clearly by design to pad the screen and avoid the keyboard touching. Screen is great. Still looking for magic formula to enable computer use in the bright bright sunshine. Keyboard taps are loud for someone who likes silent touch. The perfect PC has to exist, like build a bear.

Dell XPS 13 7390 2-in-1 i7 1065G7 1.3GHz 16GB 512GB SSD 13.4" Touch W11P | Wty
IAN BOLSTER
Works excellently as advertised.

The laptop was sold with a warning about worn keycaps. In fact they had been obviously vandalised (ex school laptops, perhaps?). The keyboard worked fine, and the rest of the laptop too. I'm using it as a file server, so I don't need the keyboard much. So very pleased, and also pleased with reboot-it's service - as always, excellent, and quick responses to any queries.

Reboot IT

Still undecided? Ask our experts.

Similar Products

Hot Desktop Computers

How Reboot IT Revitalises and Certifies Refurbished Equipment

Learn more

  • Device Arrival

    We carefully source certified refurbished computers from trusted corporate, government, and education sectors, giving each device a fresh start and new purpose.

  • Secure Data Wipe

    To protect your privacy, all previous data is securely and thoroughly erased from every tested refurbished device before it reaches you.

  • Comprehensive Testing

    Each certified refurbished computer undergoes detailed testing with specialized software to ensure full functionality, and any worn or faulty components are replaced exclusively with original parts, guaranteeing reliable, long-lasting performance for your tested refurbished device.

  • Cleaning & Grading

    Every computer is professionally cleaned and carefully graded, so you know exactly what condition your certified refurbished computer is in—giving you full confidence in your purchase.

WELCOME TO REBOOT IT

Australia's number one source for Refurbished Desktops, Laptops, Monitors and more.

Since 2001, Reboot IT has been Australia’s trusted source for certified refurbished computers and IT hardware. Every device is rigorously tested and professionally refurbished to deliver reliable, like-new performance — all at a fraction of the cost of new equipment. With over 100,000 satisfied customers, we combine expert quality with unbeatable value. Shop with confidence knowing your refurbished device comes backed by warranty and supports sustainable tech reuse.

> Learn more

Find a refurbished school laptop for BYOD.

LOOKING FOR A SCHOOL DEVICE?

Contact Us ?

ARE YOU A CORPORATE?

Contact Us >

NEED HELP?

Tech selection can be hard but we have your back.

Contact suport today from 10-6pm weekdays >
  • IBM Business partner

  • We are an IBM authorized reseller for refurbished computer and IT hardware, tested by professional and guaranteed to perform like new.
Back to top