Please allow ~2-3 weeks to dispatch for quality control. Product images are for illustrative purposes only and may contain AI-generated content; they may not represent the final product you receive. Products are subject to the cosmetic grading policy detailed here.
If you are ordering a device that does not include a Windows 11 licence as standard, please check Microsoft's minimum system requirements to confirm if it can be upgraded later should you wish to do so.



HP ProDesk 600 G1 Tower Desktop - Intel Core i5-4590, 8GB DDR3, 500GB SSD + 500GB HDD, Tower Form Factor, No Operating System
The HP ProDesk 600 G1 Tower is a powerful refurbished desktop featuring an Intel Core i5-4590 processor running at 3.3 GHz (boosting to 3.7 GHz), 8GB of DDR3 memory, dual storage with both a 500GB SSD and 500GB SATA hard drive, and Intel HD Graphics 4600, making it ideal for office work, productivity tasks, and general computing needs without being hampered by an outdated operating system.
Perfect for Your Workplace
This tower desktop is purpose-built for business environments where reliability and performance matter. Whether you're managing spreadsheets, running multiple applications simultaneously, or handling daily office tasks, the combination of a fourth-generation Intel processor and 8GB of RAM ensures smooth operation. The dual storage configuration gives you the flexibility of fast SSD access for your operating system and applications, whilst maintaining ample HDD capacity for file storage and archiving. The compact tower form factor fits neatly on or under desks without consuming excessive space.
Key Features and Benefits
- Flexible Operating System – Comes without an operating system pre-installed, allowing you to choose and install your preferred system (Windows, Linux, or other compatible options) to suit your exact requirements
- Dual Storage Configuration – Combines the speed of a 500GB SSD with the storage capacity of a 500GB HDD for balanced performance and space
- Business-Grade Reliability – Built to HP's enterprise standards with robust security features and long-term platform stability
- Multiple Display Support – Output to up to three displays simultaneously using 2 DisplayPort connections and 1 VGA port
- Extensive Connectivity – Features 4 USB 3.0 ports, 6 USB 2.0 ports, Gigabit Ethernet, and PS/2 ports for comprehensive device compatibility
- Energy Efficient – 320W power supply with 92% efficiency and active Power Factor Correction (PFC)
- Professional Aesthetics – Sleek black chassis maintains a professional appearance in any office setting
Essential Technical Specifications
- Processor: Intel Core i5-4590, 4 cores, 6MB cache, 3.3 GHz base / 3.7 GHz turbo
- RAM: 8 GB DDR3 DIMM (expandable up to 32GB with 4 DIMM slots)
- Primary Storage: 500 GB SATA SSD
- Secondary Storage: 500 GB SATA 7200 RPM HDD
- Graphics: Intel HD Graphics 4600 (integrated, no dedicated GPU required)
- Connectivity: Gigabit Ethernet, 4× USB 3.0, 6× USB 2.0, 2× DisplayPort, 1× VGA, PS/2 connectors
- Dimensions: 17cm (W) × 44.2cm (D) × 39.9cm (H)
- Weight: Approximately 9.3 kg
- Power Supply: 320W standard efficiency with PFC
- Operating System: None (certified refurbished ready for your choice of OS)
Operating System Options – Pros and Cons
Since this unit arrives without an operating system, you have the freedom to select what works best for you. Windows 10 or Windows 11 Pro offers excellent software compatibility, broad industry support, and seamless integration with business applications, though they require licensing costs. Linux provides a free, stable, and secure alternative with strong community support and minimal resource demands, though some proprietary business software may have limited compatibility. Consider your specific software requirements and IT support capabilities when making your choice.
Excellent vs Good Grade Condition
Our Excellent grade units arrive virtually free from deep scratches, cracks, paint chips, or broken components, presenting an almost-new aesthetic. Good grade units may display light scratches and more noticeable wear on the case, with possible small dings or minor paint chips that do not affect functionality. Both grades are fully tested and perform identically—the difference is purely cosmetic.
Quality Assurance and Testing
Every unit has been comprehensively tested with our cutting-edge professional testing software to verify all features and functions work flawlessly. Our technicians meticulously inspect each desktop, replace any worn components with high-quality originals, and perform complete system diagnostics before certification. Reboot IT has been an expert in the refurbished IT hardware industry since 2001, maintaining the highest standards of quality control throughout our rigorous refurbishment process.
All units are verified refurbished by Reboot IT's thorough testing process, ensuring you receive a reliable machine backed by confidence and expertise. Our commitment to quality means every certified refurbished desktop performs like new, delivering exceptional value without compromise.
Warranty and Support
This desktop includes a 3-month warranty covering all hardware faults (excluding accidental damage or software issues). Our warranty demonstrates our confidence in the quality of each device and provides peace of mind with your purchase. Should any hardware-related issues arise during the warranty period, our support team is here to assist.
Why Choose Refurbished?
Purchasing this certified refurbished desktop delivers substantial cost savings compared to new equipment whilst maintaining professional performance standards. You're also making an environmentally responsible choice by extending the lifecycle of quality hardware and reducing electronic waste. With Reboot IT's rigorous refurbishment process and Australia-based support, you get reliability, affordability, and sustainability in one package.
Ready to upgrade your office setup? This HP ProDesk 600 G1 Tower delivers professional-grade performance at an exceptional price point. Add to your cart today and experience the Reboot IT difference—trusted refurbished technology since 2001.
| Hardware Connectivity | USB 3.0,VGA,DVI-D |
| Graphics Processing Type | Integrated |
| Condition | A |
| Model | 600 G1 |
| Storage Type | HDD (Hard Disk Drive) |
| Optical Drive | DVD+/-RW |
| Operating System Edition | Professional |
| Memory Type | DDR3 |
| Other Software | Free Antivirus,Open Office |
| Brand | HP |
| Primary Drive | DVD+/-RW |
| Form Factor | Tower |
| Product Dimensions | 442mm x 399mm x 17mm |
| Operating System | Windows 10 |
| Processor Type | Intel Core i5 4th Gen. |
| Product Weight | 9.3kgs |
| Processor Speed | 3.40GHz |
| Max.ram | 16GB |
| Hard Drive Capacity | 1TB |
| Memory | 8GB |
| Audio Output | Integrated |
| Product Line | ProDesk |
Refurbished Computers - Cosmetic Grading Guide
Our supplier's refurbished hardware is typically graded either "Excellent" or "Good", however, some legacy products were graded under a letter grading system (A, B, C). Please find the definitions for each grade below and contact us if you're uncertain of a device's grade.
Used Smartphone / Refurbished Mobile Phones
"Excellent" Grade
Devices in this category appear like new, with very minor wear. Expect light or fine scratches on the screen that are shallow enough not to catch on a fingernail. The edge around the glass is virtually flawless, save for possible light scratching around the power port. The back plate may show light/fine scratches, including on the Apple logo, with any discoloration being minimal.
"Good" Grade
These devices are characterized by being fully tested and functional even if they have body scratches, minor paint chips, or a small hairline crack on the screen. Screens are free from dead pixels but may exhibit slight scratching from moderate use.
Refurbished Desktops, Laptops and Monitors
"Excellent" Grade - Laptops
Reserved for units that show barely any signs of previous use, these laptops may exhibit very minor scuffing or abrasions, associated only with minimal standard use. The keyboards show light wear, and importantly, the screens are pristine, free from any scratches, cracks, chips, dead pixels, dark spots, discoloration, or blemishes.
"Excellent" Grade - Desktops
Desktop PCs in the "Excellent" grade category are free from deep scratches, cracks, paint chips, or any broken/missing pieces, ensuring a sleek and almost-new aesthetic.
"Excellent" Grade - Monitors
"Excellent" grade is reserved for units that show evidence of very little to no previous use. Any wear on an "Excellent" Display, including housing/frame and/or external surfaces (i.e. Frame) is associated with standard minimal use. "Excellent" units may have minor scuffing and / or minor abrasions on plastics with from standard light previous use."Excellent" Displays will feature no scratches, cracks, chips, dead pixels, dark spots, discoloration or blemishes. Units will only feature the standard minimal wear and tear that is associated with a used unit.
"Good" Grade - Laptops
"Good" laptops may feature one or several small dings or dents on covers and / or small paint chips on the surface or small hairline cracks in the bezel. Laptop screens may feature uneven light diffusion in screen and may feature subtle blemishes. "Good" Laptops will not feature cracks screens but may feature slight scratching, dead pixels or white spots on the screen.
"Good" Grade - Desktops
"Good" grade desktops may have light scratches on external body and may feature more excessive unit housing and/or external case wear than "Excellent" units, including wear on case / lid. "Good" PCs may feature one or several small dings or dents on covers and / or small paint chips on the surface.
"Good" Grade - Monitors
Displays in the "Good" grade have been fully tested and are functional but may include scratches on body, small paint chips, minor cracks on body, loose and/or wobbly bases. "Good" Display screens may feature uneven light diffusion in screen and may feature subtle to moderate blemishes. "Good" Displays will not feature cracks on screens but may feature slight scratching on screen surfaces from moderate use or wear, dead pixels or white spots on the screen.
Legacy letter grading
Used Smartphone / Refurbished Mobile Phones
A Grade
- No chips, scratches or cracks on the front glass and housing
- No missing or alternative parts
- No sign of liquid damage
- Battery cannot be swollen
B Grade – Same as A Grade except:
- May have light scuffs but no chips or cracks
- Light scratches on housing or front glass
C-Grade – Same as B Grade except:
- Unlimited long shallow scratches on the front glass
- No chips or cracks on the front glass
- Unlimited scratches, chips/dents on back cover housing and corners
- Minor cracks allowed
- Customized housing and aftermarket covers allowed
Refurbished Desktops, Laptops and Monitors
A-Grade
- Overall excellent to very good cosmetic condition. Some may be pristine, others may have light scratches or minor blemishes
- Laptops may have some shiny areas around the keyboard such as the space bar, touchpad or touchpad buttons
- Keyboard keys will be in excellent condition
- Laptop and monitor screens will be blemish free
- Cosmetic blemishes will not impact the overall functionality or performance of the device
B-Grade
- Will have some cosmetic blemishes that include scratches and/or other imperfections
- Minor scratches and dents on the housing
- Laptops may have shiny keys or shiny surfaces around the keyboard however all characters will be legible
- Laptop and monitors screens will have imperfections such as minor scratches, minor chips and/or white spots. There will be no cracking on the screen
- Have the same warranty as A Grade
- Pricing will be cheaper than A Grade
C-Grade
- Same as B-Grade except may have unlimited scratches/blemishes on the screen
- May have cracks/chips or dents on the housing
- Have the same warranty as A Grade
- Pricing will be cheaper than B Grade











