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.
Professional Workstation Power Meets Affordable Reliability
The Dell Precision Tower 3420 Small Form Factor workstation features an Intel Core i7-6700 processor (6th Gen, 3.40 GHz, 4 cores/8 threads), 32GB DDR4 RAM, 1TB HDD storage, NVIDIA Quadro K1200 professional graphics with 4GB GDDR5 memory, DVD/RW drive, and Windows 10 Pro operating system—delivering enterprise-grade computing performance in a compact 9.4 cm × 29 cm × 29.2 cm chassis weighing just 5.3 kg. This certified refurbished workstation combines Intel's proven Skylake architecture with professional-grade NVIDIA Quadro graphics, making it ideal for CAD design, 3D modelling, video editing, engineering applications, and demanding business workflows that require multi-tasking capabilities and reliable performance.
Ideal Applications
This workstation excels in professional environments requiring dependable computing power. Run multiple applications simultaneously with 32GB of RAM whilst the Intel Core i7-6700's Hyper-Threading technology handles complex calculations efficiently. The NVIDIA Quadro K1200 graphics card is ISV-certified for professional design software including AutoCAD, SolidWorks, Revit, and Adobe Creative Suite, supporting up to four 4K displays simultaneously via mini-DisplayPort connections. Perfect for architects, engineers, graphic designers, video editors, small businesses, and professionals who need certified graphics performance without the premium cost of new equipment.
Key Performance Features
- Powerful 6th Gen Intel Processor: Core i7-6700 with 8MB cache, turbo boost up to 4.0 GHz, and Intel Virtualization Technology for enhanced multitasking
- Generous Memory Configuration: 32GB DDR4-2400 MHz dual-channel memory ensures smooth operation of demanding professional applications
- Professional Graphics Performance: NVIDIA Quadro K1200 with 512 CUDA cores and 4GB GDDR5 memory, certified for industry-leading CAD and design software
- Multi-Display Capability: Supports up to four simultaneous 4K displays (4096×2160 @ 60Hz) through four mini-DisplayPort 1.2 outputs
- Ample Storage: 1TB HDD provides generous capacity for project files, media libraries, and business documents
- Enterprise-Grade Networking: Intel I219-LM Gigabit Ethernet controller delivers reliable 10/100/1000 Mbps connectivity
- Versatile Optical Drive: Built-in DVD±RW drive for media playback and data archiving
- Space-Efficient Design: Compact SFF chassis fits easily under desks or in tight workspaces whilst maintaining full workstation capabilities
Technical Specifications
- Processor: Intel Core i7-6700 (6th Gen Skylake), 3.40 GHz base, 4.0 GHz turbo, 4 cores/8 threads, 8MB cache
- Memory: 32GB DDR4-2400 MHz RAM (dual-channel, expandable to 64GB)
- Storage: 1TB SATA HDD (7200 RPM)
- Graphics: NVIDIA Quadro K1200, 4GB GDDR5, 512 CUDA cores, four mini-DisplayPort 1.2 outputs
- Optical Drive: 8× DVD±RW
- Networking: Intel I219-LM Gigabit Ethernet (10/100/1000 Mbps)
- Operating System: Windows 10 Pro 64-bit (pre-installed and licensed)
- Power Supply: 180W, 85% efficient
- Dimensions: 9.4 cm (W) × 29 cm (H) × 29.2 cm (D)
- Weight: 5.3 kg
Windows 10 Pro Operating System
This workstation comes with genuine Windows 10 Pro, offering enhanced security features including BitLocker encryption, Remote Desktop capabilities, and Group Policy management ideal for business environments. Windows 10 Pro provides excellent stability and broad software compatibility with professional applications, though it requires periodic updates and will eventually need migration to Windows 11 as Microsoft phases out support. The familiar interface and extensive business features make it a reliable choice for professional workstations, providing seamless integration with Microsoft 365 and enterprise networks.
Cosmetic Condition Guide
Excellent Grade: PCs classified as Excellent show minimal signs of previous use with no deep scratches, cracks, paint chips, or broken/missing pieces. These units feature only very minor scuffing or light abrasions associated with careful handling and light standard use.
Good Grade: Good grade PCs are fully tested and functional, displaying light scratches on the external body with more visible unit housing or external case wear than Excellent units. These may feature one or several small dings, dents on covers, or small paint chips on the surface whilst maintaining complete operational integrity.
Verified Reboot Refurb Quality Assurance
Every Dell Precision Tower 3420 workstation undergoes Reboot IT's comprehensive Verified Refurb certification process, where our qualified technicians meticulously test all features and functions to ensure optimal performance. Since 2001, Reboot IT has been Australia's trusted source for certified refurbished computers, utilising cutting-edge diagnostic software to verify hardware integrity, memory performance, storage health, graphics functionality, network connectivity, and system stability. Our rigorous testing protocols include hard drive SMART diagnostics, CMOS battery verification, thermal stress testing, and full component functionality checks, ensuring your workstation meets our stringent quality standards.
All units are thoroughly cleaned, professionally refurbished with genuine parts when required, and loaded with a fresh, fully licensed Windows 10 Pro installation. This certified refurbished Dell workstation comes with a 3-month warranty provided by Reboot IT, giving you confidence in your purchase whilst supporting sustainable technology practices by extending the life of quality enterprise equipment.
Why Choose Certified Refurbished
Purchasing this certified refurbished workstation delivers professional-grade performance at a fraction of new equipment costs whilst supporting environmental sustainability by reducing e-waste. You receive enterprise-quality hardware originally designed for demanding corporate environments, now professionally restored and tested to meet our exacting standards. This represents exceptional value for professionals, small businesses, and organisations requiring reliable workstation performance without premium pricing.
Ready to experience professional workstation performance? Add this Dell Precision Tower 3420 to your cart today and enjoy certified quality backed by Reboot IT's 3-month warranty and Australia's most experienced refurbishment team. Shop with confidence knowing your workstation has been thoroughly tested and verified for reliable, like-new performance.
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
