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.






Certified Refurbished Lenovo ThinkPad P51 Professional Workstation
This premium certified refurbished Lenovo ThinkPad P51 features an Intel Core i7-6820HQ quad-core processor (2.7GHz base, 3.6GHz turbo), 16GB DDR4-2400 RAM, 256GB PCIe NVMe OPAL encrypted SSD, and a stunning 15.6-inch 4K display (3840x2160 resolution), powered by professional-grade NVIDIA Quadro M1200 graphics with 4GB GDDR5 memory, making it the ultimate choice for demanding professional applications and creative workflows.
Engineered for Professional Excellence
The ThinkPad P51 is designed for professionals who demand uncompromising performance and reliability. Perfect for CAD design, 3D modelling, video editing, engineering simulations, architectural visualisation, and intensive multitasking environments. This certified refurbished workstation excels in professional design studios, engineering firms, financial institutions, and creative agencies where precision and dependability are essential.
Key Features & Professional Benefits
Exceptional Processing Power
- Intel Core i7-6820HQ quad-core processor with Hyper-Threading technology delivers superior multitasking performance
- 16GB high-speed DDR4 memory ensures smooth operation of professional applications and large datasets
- NVIDIA Quadro M1200 professional graphics provides certified drivers for industry-standard software
Professional Display & Security
- Ultra-sharp 4K display delivers exceptional colour accuracy and detail for design work
- PCIe NVMe OPAL self-encrypting drive technology provides enterprise-grade data security
- MIL-STD-810G military certification ensures durability in demanding work environments
Comprehensive Connectivity
- Thunderbolt 3 (USB-C) port enables high-speed data transfer and external display connectivity
- Multiple USB 3.0 ports, HDMI, mini DisplayPort for versatile peripheral connections
- CS13 docking connector for seamless desktop integration in professional environments
Essential Technical Specifications
- Processor: Intel Core i7-6820HQ (4 cores, 8 threads, 2.7-3.6GHz, 8MB cache)
- Memory: 16GB DDR4-2400 SODIMM (expandable to 64GB)
- Storage: 256GB PCIe NVMe OPAL self-encrypting SSD
- Graphics: NVIDIA Quadro M1200 (4GB GDDR5, 640 CUDA cores)
- Display: 15.6-inch 4K UHD (3840x2160 resolution)
- Wireless: Intel Dual Band Wireless-AC 8260 + Bluetooth 4.1
- Ports: Thunderbolt 3, 3x USB 3.0, 1x Powered USB 3.0, HDMI, Mini DisplayPort
- Camera: 720P HD webcam with dual array microphone
- Dimensions: 377 x 252 x 31mm (W x D x H)
- Weight: 2.81kg
Windows 10 Professional Advantages
Pros: Enhanced security features including BitLocker encryption, domain connectivity, Remote Desktop capability, and advanced group policy management. Professional edition provides essential business-grade tools and extended support, making it ideal for corporate environments and professional workflows.
Cons: Requires eventual migration to Windows 11 for continued security updates beyond October 2025, though this system's robust hardware ensures compatibility with future operating systems.
Quality Assurance & Expert Testing
Every certified refurbished ThinkPad P51 undergoes Reboot IT's comprehensive verification process. We've been industry experts since 2001, utilising cutting-edge testing software to ensure optimal performance. We thoroughly test all features and functions, including display calibration, graphics performance, thermal management, and connectivity.
All units are verified refurbished through Reboot IT's thorough testing process, ensuring each workstation meets our exacting professional standards. Our rigorous quality control includes stress testing, component validation, and performance benchmarking.
Warranty & Professional Support
This certified refurbished Lenovo ThinkPad P51 is sold by Reboot IT and includes a comprehensive 3-month warranty covering all hardware components and functionality. Our warranty reflects our confidence in our refurbishment process and commitment to professional-grade reliability.
Experience the power of professional workstation computing with this exceptional ThinkPad P51. Whether you're designing, engineering, or creating, this certified refurbished system delivers the performance and reliability your professional work demands. Add to cart today and elevate your professional productivity with genuine workstation-class performance.
Bluetooth |
Built-in Webcam |
Wi-Fi |
Audio Output | Integrated |
Brand | Lenovo |
Bundle Description | None |
Colour | Black |
Custom Bundle | No |
GPU | NVIDIA Quadro M1200 |
Graphics Processing Type | Dedicated Graphics |
Hard Drive Capacity | 256GB |
Item Height | 25.3mm |
Item Length | 375mm |
Item Weight | 2.45kg |
Item Width | 252mm |
Manufacturer Warranty | 1 Year |
Processor | Intel Core i7 6th Gen |
Processor Model | 6820HQ |
Memory Type | DDR4 SODIMM |
Model | ThinkPad P51 W10DG |
MPN | 20MN-S02 |
Operating System | Windows 10 Pro |
Operating System Edition | Professional |
Optical Drive | None |
Other Software | None |
Part Number | 20MN-S02 |
Max Turbo Speed | 3.60 GHz |
Processor Speed | 2.70 GHz |
RAM Size | 16GB |
Release Date | Q3'17 |
Release Year | 2017 |
Screen Size | 15.6 in |
SSD Capacity | 256GB |
Storage Type | NVMe |
Connectivity | HDMI|Mini DisplayPort|USB 3.0|Gigabit Ethernet |
Features | Backlit Keyboard|Built-in Microphone|Built-in Webcam|Multi-Touch Trackpad |
Maximum Resolution | 3840x2160 |
Most Suitable For | Graphic Design|Workstation |
RAM Type | DDR4 SODIMM |
Series | ThinkPad |
Type | Notebook/Laptop |
Webcam | YES |
L2 Cache | None |
Cores | 4 |
Maximum RAM Capacity | None |
Hard drive upgradable | Yes |
RAM upgradable | Yes |
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 monitors are for those who expect a display showing very little to no signs of previous use. With minimal scuffing or abrasions on the housing/frame and no imperfections on the screen, these units offer an almost-new viewing experience.
"Good" Grade - Laptops
"Good" grade laptops are fully functional but come with signs of more extensive use compared to Excellent grade units. This includes scratches on the laptop body, heavier wear on keyboards, and possible small dents or paint chips. Screens may show uneven light diffusion and subtle blemishes but no cracks.
"Good" Grade - Desktops
Similar to laptops, "Good" grade desktops may exhibit light scratches and more noticeable wear on the case compared to "Excellent" grade PCs. Small dings or paint chips might be present but do not affect functionality.
"Good" Grade - Monitors
Displays in the "Good" grade have been fully tested and are functional but may include body scratches, minor cracks, or a loose/wobbly base. Screens could display uneven light diffusion and moderate blemishes but remain free from cracks.
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