HP Z4 G4 Workstation Core i7-9800X

£681.00

Standard Delivery by 14 - 16 OctExpress Delivery by 12 Oct for £12.00

Restored professionally

Based on up to 100-points of inspection

The PhoneMart Promise

Based on up to 100-points of inspection

We measure each battery's health and capacity against strict standards, and replace any that don't make the grade, so you get power you can rely on all day.
The display is switched on and looked over closely for any blemishes, so there are no marks, dust spots or discolouration to spoil the view.
Where a charger is included, the cord and connectors are checked for wear, and the plug is confirmed to fit sockets.
Before it ships, every device gets a thorough professional clean and polish so it feels fresh in your hands.
Every lens is put to work, so we can confirm sharp photos, smooth video and reliable performance on video calls.
A full factory reset wipes the device clean, securely erasing all previous data and restoring the original settings.
Each button is pressed to check it responds straight away and does exactly what it should, from volume to lock to power.
If any parts are fitted during refurbishment, they are tested for compatibility and held to the same standards as the originals.
The moisture indicator inside the device is inspected to rule out any history of water or liquid damage.
Every port, including the headphone, USB and Ethernet connections, is checked to make sure it connects and works reliably.
Face and fingerprint unlock, along with any voice recognition, are tested to make sure they work quickly and accurately.
Positioning is checked for accurate GPS, so maps and location apps behave exactly as they should.
External sensors, such as proximity, brightness, laser measurement and heart rate, are checked for precise and responsive readings.
Screws, casing, frames and other mechanical parts are examined to confirm they are original or quality replacements, and any replacement has to match or beat industry standards.
We confirm that Wi-Fi and Bluetooth connect quickly and hold a stable signal.
Speakers and microphones are inspected and fine tuned so audio records and plays back clearly.
The flash and every indicator light are tested to confirm they light up and work correctly.
Any features that are specific to your device are checked against the same standards, so nothing gets missed.
The keyboard and trackpad are tested key by key and across the whole surface, so typing, clicking and gestures all respond accurately. Any backlighting is checked too.
The cooling fans and air vents are cleaned and inspected, so the device stays quiet and runs at a safe temperature even under heavy use.
Internal components such as the hard drive, SSD and graphics card are checked to confirm every part is present, secure and fully working.

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Light signs of useVerified partsBattery for daily use

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HP Z4 G4 Workstation Core i7-9800X

Good
Black/Grey
1024 GB

£681.00

14-day returns

Set up the return in just a few clicks in your PhoneMart account.

Send the device back within 14 days of receiving it. Return postage is paid by you unless the item is faulty, damaged or not what you ordered.

Get your cash back within 3 business days of the seller receiving the device.

Proudly refurbished by PhoneMart Privacy policy

Good-Black/Grey-1024 GB

£681.00

Common questions about the HP Z4 G4 Workstation Core i7-9800X

Black/Grey

Colour

1024 GB

Storage

Bluetooth

Yes

Ethernet

Tower

Form factor

NVIDIA Quadro K4200

Graphics card

Graphics card memory size gb

GDDR5

Graphics card memory type

Hdd storage gb

If you need a workstation that handles complex design, engineering, or data processing tasks, the HP Workstation Z4 G4 Intel Core i7-9800X CPU @3.8GHz, 32GB DDR4, 1TB SSD is built to meet those demands. Its tower form factor fits perfectly on a dedicated desk, offering expandability and cooling for sustained performance.

The HP Workstation Z4 G4 released in 2019 delivers consistent power with an 8-core Intel Core i7-9800X processor running at 3.8 GHz. Paired with 32 GB of DDR4 memory and a fast 1 TB SSD, it keeps your professional applications responsive and your large files ready to access. The NVIDIA Quadro K4200 graphics card with 4 GB GDDR5 memory supports detailed 3D rendering and visual workflows.

Key features

Processor: Intel Core i7-9800X 8-core 3.8 GHz
Memory: 32 GB DDR4 for multitasking
Storage: 1 TB SSD for quick access
Graphics: NVIDIA Quadro K4200 4 GB GDDR5
Form factor: Tower for desktop setups
Ports: Ethernet, USB-A, audio jack, optical drive

Who is this for?

The HP Workstation Z4 G4 Intel Core i7-9800X suits professionals who run intensive software like CAD, 3D modeling, video editing, or scientific simulations. If you need a stable desktop solution for creative studios, engineering desks, or technical workstations, this system fits well.

This workstation appeals to users setting up a dedicated space needing reliable performance and expansion options. It's also a solid choice for upgrading an existing setup that requires more memory and faster storage without changing form factor.

What you get and what to know

What you get	Good to know
Fast processing with 8-core Intel Core i7-9800X	Wired networking via Ethernet port only
Graphics power from NVIDIA Quadro K4200 4 GB GDDR5	Connectivity includes USB-A, audio jack, optical drive
Storage space with 1 TB SSD for speed	No wireless Bluetooth or WiFi included

Why buy it refurbished?

Buying the HP Workstation Z4 G4 Intel Core i7-9800X CPU @3.8GHz, 32GB DDR4, 1TB SSD refurbished means you get a fully inspected and tested device that meets high standards. Each unit undergoes up to a 100-point quality check, including all ports, processor, memory, and graphics functions.

Refurbished devices come factory reset and include a 24-month warranty, free delivery, and 14-day returns. Choosing refurbished extends the life of quality electronics and reduces environmental impact by keeping devices in use longer.

ColourBlack/Grey

Storage1024 GB

BluetoothNo

EthernetYes

Form factorTower

Graphics cardNVIDIA Quadro K4200

Graphics card memory size gb4

Graphics card memory typeGDDR5

Hdd storage gb0

Hdmi portNo

Jack portYes

Memory gb32 GB GB

MicrophoneYes

Optical driveYes

OsWindows

ProcessorCore i7-9800X

Processor brandIntel

Processor core8 core

Processor maximum speed3.8

Processor release year2018

Processor speed ghz3.8 GHz

Sd card slotNo

Ssd storage capacity gb1024

Storage gb1024 GB

Storage typeSSD

Usba portYes

Usbc portNo

Vga portNo

WebcamNo

Weight11300 g g

WifiNo

Year of release2019

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