Sigma Computer Systems

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Sigma Computer Systems has been providing quality computer services to Kemptville and surrounding areas since 1997.

We were established with the main objective of providing affordable, qualified computer services to smaller urban areas. Our main focus is computer repairs, upgrades, networking and computer sales - both new and used systems and laptops.

Please contact us for product pricing and other company related information.



Featured Products


Lenovo T495 - Refurbished

$449.00 In Stock

14", AMD Ryzen 5, 16GB, 500GB SSD (New), Windows 10 Pro


Lenovo T590 - Refurbished

$549.00 No Stock

15.6", Intel i5 Processor 8th Gen, 16GB, 500GB m.2 SSD (New), Windows 10 Pro


Lenovo Thinkpad E580 - Refurbished

$449.00 Coming Soon

15.6", Intel i5 8th Gen, 16GB RAM, 500GB SSD (New), Windows 10 Pro

HP 800 G4 SFF Desktop - Refurbished

$379.00 Coming Soon

Intel Core i5, 8th Gen, 8GB RAM - 500GB SSD (New) - Windows 10 Pro

"The Ryan’s Well Foundation is grateful for the excellent service and advice given and highly recommends Sigma Computers. Their attention to detail as well as available support has been very much appreciated."
More happy customers

Home and Business Systems

  • ASUS H610M-E Mainboard
  • Integrated Video, Network, Sound
  • INTEL I5-12400 2.5GHz CPU
  • CRUCIAL DDR4 3200 16GB
  • Kingston NV1 500GB NVMe SSD
  • Coolermaster N200 Case
  • Coolermaster 550W P/S
  • Windows 10 Home Premium
  • Monitor sold separately.

    $Call

    • Authorized Reseller

    • Authorized Reseller

    Products Available

    • Cabling
    • Card Readers
    • CD/DVD Disc Medias
    • Computer Cases
    • Computer Systems
    • Cooling
    • Digital Cameras and Web Cams
    • Flash Drives
    • Gaming Accessories
    • Hard Drives
    • Hard Drives - External
    • Hard Drives - Notebook
    • Hard Drives - Solid State
    • Headphones and Microphones
    • Keyboards
    • LCD Monitors
    • Memory (RAM)
    • Mice
    • Motherboards
    • Network - Switches
    • Network - Wired
    • Network - Wireless
    • Notebook Accessories
    • Notebooks
    • Power Protection
    • Power Supplies
    • Processors
    • Sound Cards
    • Speaker Systems
    • Tablet PC
    • Video Capture Products
    • Video Cards