HP Z4 G4 WorkStation Core i9-10900X 3.7 GHz

£943.99

Save £1,056.00

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

Restored professionally

Based on up to 100-points of inspection

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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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Almost no signs of useVerified partsBattery for daily use

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HP Z4 G4 WorkStation Core i9-10900X 3.7 GHz

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HP Z4 G4 WorkStation Core i9-10900X 3.7 GHz

Excellent
Black/Grey
1024 GB

£943.99

£1,999.99 newSave £1,056.00

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.

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Excellent-Black/Grey-1024 GB

£943.99

£1,999.99 newSave £1,056.00

£943.99

£1,999.99 newSave £1,056.00

Common questions about the HP Z4 G4 WorkStation Core i9-10900X 3.7 GHz

Black/Grey

Colour

1024 GB

Storage

Bluetooth

Yes

Ethernet

Tower

Form factor

NVIDIA GeForce RTX 3050

Graphics card

Graphics card memory size gb

GDDR6

Graphics card memory type

Hdd storage gb

When you need a workstation that manages complex projects and heavy software, the HP Z4 G4 WorkStation Core i9-10900X 3.7 GHz (2019) steps up. Its Intel 10 core processor powers through demanding tasks without hesitation, making it ideal for design, engineering, and content creation.

The 32GB of RAM and 1024 GB SSD keep your workflows fluid and responsive. Whether you're running multiple applications or working with large files, this tower workstation gives you the speed and storage to stay productive. Its dedicated NVIDIA GeForce RTX 3050 graphics card supports detailed visual work and accelerated rendering.

Key features

Processor: Intel Core i9-10900X 10 core 3.7 GHz
Memory: 32 GB RAM for smooth multitasking
Storage: 1024 GB SSD for fast file access
Graphics: NVIDIA GeForce RTX 3050 8GB GDDR6
Connectivity: Ethernet and WiFi included
Ports: HDMI and standard jack for peripherals

Who is this for?

Professionals working in 3D design, video editing, or software development will find the HP Z4 G4 WorkStation Core i9-10900X 3.7 GHz (2019) a reliable partner. Its combination of a strong 10 core CPU, ample memory, and dedicated graphics handles multitasking and rendering with confidence.

This workstation fits well in studios, offices, or home setups where performance and expandability matter. It's also a solid choice for anyone adding a powerful machine to a creative or technical workspace.

What you get and what to know

What you get	Good to know
1TB SSD storage fast access and boot times	Wired and wireless Ethernet and WiFi included
32GB RAM handles multiple apps smoothly	No Bluetooth connectivity on this model
Essential ports HDMI and standard jack available	No optical drive designed for digital workflows

Why buy it refurbished?

Buying refurbished helps reduce electronic waste and extends the life of quality hardware like the HP Z4 G4 WorkStation Core i9-10900X 3.7 GHz (2019). Every unit undergoes a thorough inspection by industry professionals to ensure full functionality and reliability before it reaches you. This process includes a factory reset to clear previous data and a cosmetic grading so you know what to expect.

Refurbished products from PhoneMart come with free delivery and a 24-month warranty, giving you confidence in your purchase while saving on cost and environmental impact.

ColourBlack/Grey

Storage1024 GB

BluetoothNo

EthernetYes

Form factorTower

Graphics cardNVIDIA GeForce RTX 3050

Graphics card memory size gb8

Graphics card memory typeGDDR6

Hdd storage gb0

Hdmi portYes

Jack portYes

Memory gb32 GB GB

MicrophoneNo

Optical driveNo

OsWindows

ProcessorCore i9-10900X

Processor brandIntel

Processor core10 core

Processor maximum speed4.7

Processor release year2019

Processor speed ghz3.7 GHz

Sd card slotNo

Ssd storage capacity gb1024

Storage gb1024 GB

Storage typeSSD

Usba portYes

Usbc portNo

Vga portNo

WebcamNo

Weight12000 g g

WifiYes

Year of release2019

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What you get and what to know

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