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.
Dell Precision Tower 3420 Small Form Factor Workstation - Certified Refurbished
The Dell Precision Tower 3420 features a 7th Generation Intel Core i7-7700 quad-core processor (3.6 GHz base, up to 4.2 GHz Turbo), 32 GB DDR4 2400 MHz RAM, 256 GB M.2 PCIe NVMe SSD, and NVIDIA Quadro NVS 510 2 GB professional graphics in a compact small form factor chassis, delivering reliable workstation performance for professional applications, multi-display setups, and business productivity tasks. This certified refurbished unit has been thoroughly tested by Reboot IT using cutting-edge diagnostic software to verify all features and functions meet stringent quality standards.
Ideal Professional Applications
This workstation excels in environments requiring stable performance and professional-grade graphics capabilities. CAD and engineering professionals benefit from the Quadro NVS 510's four mini DisplayPort outputs supporting up to four displays at 4K resolution, enabling multi-monitor workflows for technical design and data visualization. Financial analysts and business users can leverage the 32 GB RAM for seamless multitasking across spreadsheets, databases, and business intelligence applications without performance degradation. The compact 29.0 cm H × 9.26 cm W × 29.2 cm D footprint makes it ideal for space-constrained offices while maintaining full workstation expandability.
Performance & Expandability Features
- Processing Power: Intel Core i7-7700 with 4 cores, 8 threads via Hyper-Threading, 8 MB Smart Cache, and Intel Turbo Boost up to 4.2 GHz
- Professional Graphics: NVIDIA Quadro NVS 510 with 192 CUDA cores, four mini DisplayPort connectors, and support for up to four 4K displays simultaneously
- Memory Capacity: 32 GB DDR4 2400 MHz non-ECC RAM configured as 4×8 GB DIMMs, expandable to 64 GB
- Fast Storage: 256 GB M.2 PCIe NVMe Class 40 SSD for rapid boot times and application loading
- Expansion Slots: One half-height PCIe x16 Gen3 slot, one half-height PCIe x4 Gen3 slot, plus M.2 storage expansion
- Connectivity: 6× USB 3.0 ports, 4× USB 2.0 ports, Gigabit Ethernet, DisplayPort, HDMI, serial port, and PS/2
- Optical Drive: DVD±RW 8× drive for media reading and writing
- Security: TPM (Trusted Platform Module), chassis intrusion switch, and BIOS password support
- Form Factor: Small form factor tower measuring 29.0 cm × 9.26 cm × 29.2 cm and weighing 6.25 kg
- Power Supply: 180W 85% efficient PSU (80PLUS Bronze certified, Energy Star qualified)
Windows 10 Pro Operating System
Windows 10 Pro provides enterprise-grade features including domain join capability, Remote Desktop, BitLocker encryption, and advanced networking tools essential for business environments. The operating system delivers excellent application compatibility, supporting legacy software alongside modern productivity suites, with Windows Hello biometric authentication and enhanced security through Windows Defender. While Windows 10 receives regular security updates until October 2025, some users experience occasional interruptions from automatic updates and higher system resource demands compared to older versions. The familiar interface and extensive driver support make Windows 10 Pro particularly reliable for professional workstations requiring stability and compatibility.
Cosmetic Condition Grades
Excellent Grade units show minimal signs of previous use with only very minor scuffing or light abrasions on external surfaces from standard use. The chassis may have minor scratches but features no deep scratches, cracks, paint chips, or broken pieces, representing well-maintained equipment.
Good Grade units are fully tested and functional but display more visible wear including light scratches on the external body, possible small dings or dents on covers, and small paint chips on surfaces. All Good Grade units maintain complete functionality despite the increased cosmetic wear from moderate previous use.
Verified Reboot Refurb Certification
Every Dell Precision 3420 undergoes Reboot IT's comprehensive Verified Refurb testing process, which evaluates all critical components through specialized diagnostic software. Technicians test the processor, memory, storage drive (including SMART diagnostics), graphics card, USB ports, network connectivity, optical drive, speakers, and cooling system to ensure peak performance. Since 2001, Reboot IT has been Australia's expert in certified refurbished IT equipment, utilizing cutting-edge testing technology to verify each unit meets professional-grade reliability standards. Any worn or faulty components are replaced exclusively with original parts during the refurbishment process, guaranteeing long-lasting, dependable performance.
Quality Assurance & Warranty
This certified refurbished workstation is sold by Reboot IT with a comprehensive 1-year warranty covering all hardware components including the motherboard, storage drive, memory, graphics card, and other internal parts. The warranty provides repair or replacement of defective parts at no additional cost, though it does not cover accidental damage or software-related issues. Reboot IT's warranty reflects confidence in the thorough testing and quality standards applied to every Verified Refurb unit, backed by responsive customer support to address any technical concerns. With over 100,000 satisfied customers across Australia, Reboot IT combines expert refurbishment quality with exceptional value and environmental responsibility.
Upgrade your professional workspace with this certified refurbished Dell Precision 3420 workstation—delivering proven Intel Core i7 performance, professional Quadro graphics, and Reboot IT's quality guarantee at a fraction of new equipment cost.
Bluetooth|Optical Drive|Wi-Fi |
| Manufacturer Warranty | 3 Months |
| Features | Optical Drive |
| Item Height | 290.07mm |
| RAM Size | 32GB |
| Graphics Processing Type | Dedicated Graphics |
| Chipset | C236 |
| Item Width | 92.71mm |
| Condition | A |
| Model | Precision Tower 3420 |
| Type | Desktop |
| Resolution | none |
| Processor | Intel Core i7 6th Gen. |
| Release Date | Q3'15 |
| Processor Model | 6700 |
| Colour | None |
| Item Weight | 6.3kgs |
| Storage Type | SSD (Solid State Drive) |
| Optical Drive | DVD/RW |
| Operating System Edition | Professional |
| SSD Capacity | 256GB |
| Memory Type | DDR4 DIMM |
| Cores | 4 |
| Other Software | Open Office,Free Antivirus |
| Brand | Dell |
| L2 Cache | 8 MB |
| Form Factor | Small Form Factor (SFF) |
| Part Number | 06C7 |
| Screen Size | None |
| Maximum Ram Capacity | 64 GB |
| Custom Bundle | No |
| Motherboard Model | None |
| Series | Dell Precision |
| Operating System | Windows 10 |
| RAM Type | DDR4 DIMM |
| Most Suitable For | Casual Computing,Industrial,Workstation,Office |
| Connectivity | HDMI,USB 3.0,DisplayPort |
| Max Turbo Speed | 4.00 GHz |
| MPN | None |
| Processor Speed | 3.40GHz |
| Release Year | 2015 |
| Hard Drive Capacity | 256GB |
| GPU | NVIDIA Quadro K620 |
| Item Length | 292.1mm |
| Audio Output | Integrated |
| Webcam | No |
| Bundle Description | None |
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
