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Dell OptiPlex 780 3.0GHz 4GB 1TB Win 7 Mini Tower Computer (Refurbished)

Included Warranty: 1 year Distributor
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ITEM# 15384392
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    Refurbished Item

    Any price comparison, including MSRP or competitors' pricing, is to the new, non-refurbished product price. Learn More

    ITEM#: 15384392

    Surf the Internet or complete work-related tasks on this Dell OptiPlex mini tower computer. With Windows 7 Professional and an Intel Core 2 Duo 3.0GHz processor, this tower computer offers lightning-fast processing speeds and 4GB of memory for easy multi-tasking. This desktop computer features a compact design for neat placement in any space and generous data storage to accommodate a range of software.

    This computer has been refurbished to ensure it works like new. It offers generous data storage to accommodate all the software you need, fast processing and lots of memory for multitasking. The mini tower setup allows this system to fit neatly into your space, whether in a professional setting or small home office.

    • Operating system: Microsoft Windows 7 Professional (64-bit)
    • Processor: 3.0GHz Intel Core 2 Duo
    • Memory: 4GB DDR3
    • Hard drive: 1TB
    • Optical drive: DVD±RW
    • Graphics: Integrated Intel Media Accelerator 4500
    • Audio: Integrated High Definition audio
    • Networking: Integrated Intel Gigabit Ethernet LAN 10/100/1000
    • Bays (available/total): (1/2) External 5.25", (1) External 3.5", (2) Hard Drive Supported
    • Slots: (2) PCI, (1) PCI Express x16 , (1) PCI Express x1
    • Ports: 8 x USB 2.0 (2 front, 6 rear), 1 x Serial, 1 x Parallel, 1 x VGA, 1 x Ethernet (RJ-45), 1 x eSATA, 2 x 3.5mm audio line-in, 2 x 3.5mm audio line-out
    • Power Supply: 305W
    • Included items: Computer system, keyboard, mouse and power cord
    • Dimensions: 16.1" x 7.4" x 17"
    • Weight: 25.8 lbs
    • Model: OptiPlex 780 MT

    Please note: This item does not ship to Hawaii, Alaska or Puerto Rico.


    CPU Type Core 2 Duo
    Computer Memory 4 GB
    Hard Drive Capacity 1 TB
    Operating System Windows 7 Professional
    Dimensions See Details
    Warranty 1 year Distributor
    Model Number OptiPlex 780 MT
    Country of Origin China

    Customer Reviews

    5 Stars
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    1 Stars
    • Most Recent

    • Monica

      My daughter & granddaughter love their new computer. Exactly what they need in the small space they have

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    • Like new

      This PC arrived on time and was packed very professionally. It looks brand new and so far has performed as such,Joy Systems did a great job refurbishing this computer.

      Read More
    • Using for sometime now

      Added Windows 10 as a free update from Microsoft.

      Read More
    • Very good considering the age

      Good specs. Solid computer considering how old it is.

      Read More
    • dell optiflex 780

      does not always do the same thing- every other time opens without a mouse pointer close reopen sometimes you have a mouse alot of restarting to be able to use it

      Read More
    • Most Helpful

    • I love this computer!

      My old computer was very slow. This one is very fast. I cannot say how it will hold up over time because I just purchased it. I have bought refurbished computers in the past and they have all held up and I have been very pleased with their performance. If this one does as well I will purchase through Overstock again.

      Read More
    • Dell OptiPlex (refurbished)

      shopped around for a new computer for a few days, found the best value here on

      Read More
    • Michelle

      It starts up faster than my XP and is in good shape. Some scuffs but does not affect anything.

      Read More
    • Good Purchase

      Worked properly right out of the box. Case in good shape. Seems a little noisy but that is a small issues compared to proper functionality. It is fast and does exactly what was advertised. The price was right. I would buy again.

      Read More
    • Fairly Positive

      This is an excellent computer which was shipped promptly and arrived on time. My only complaint is that it is NOT a Mini tower as advertised. It is a full sized desktop tower. It still works in our situation so no need to return it but don't expect the smaller version.

      Read More

    Questions & Answers

    • is this wifi ready?

    • Can the Windows 7 be upgraded to Windows 10?

      • Hello columbusdrive, yes, this can be upgraded to Windows 10. Thank you for shopping with us!

      • is this wifi ready?

      Read more Read less
    • Does this tower have a CD burner ?

    • I received a pretty big tower and i'm not sure it is a mini but i don't really mind the size of the tower. I was supposed to also receive 6 months of free internet security but i didn't find any info on that or the operating system recovery software. Am i mistaken about the internet security ? I did look at several computers before choosing this one and could be honestly mistaken.

      • Hello Jazz, thank you for your inquiry. Unfortunately, the information you have requested is currently unavailable. You will receive an email notification once an answer is posted. Have a great day.

    • Can you At least add a recording card to the computer? I'm a youtuber and I need a better computer for what I do which is gaming.

      • Hello CrookGaming, this model already has a recording feature. If want something advanced, you can also add an extra PCI sound card. Thank you for shopping with us!

    • Does this computer come with a recording card?

      • Hello CrookGaming, no, this does not come with a recording card and is not meant for gaming purposes. Thank you for shopping with us!

    • Why did you choose this product?

      • Already purchase one and was very happy product.

      • I looked for desktops with Windows 7, then looked for a 1TB or higher hard drive. I asked my landlord and his son-in-law who recommended the site, for an opinion, and they both told me they had purchased the same machine in the same place and they were fine with it. They have always been good sources of information, so I went with it. I'm a little nervous that Microsoft is "phasing out" Internet Explorer, but they are still better than anything the opposition has.

      • Recommended from my corporate office

      • family members have purchased on this website

      • Needed a win 7 for a friend who is light web, email user to replace XP machine with bad system board. Appropriate for this friend.

      • good price and a good warranty package.

      • Heard good thins about your products.

      • I think it is a decent price...

      • for home

      • Looked like a good deal.

      • Good deal, based on recommendation of computer geek

      Read more Read less
    • Does this computer have an ethernet connection? Is the included 4 RAM expandable to 8 RAM?

      • Hello scribbler101, this has 4 GB of RAM which is not expandable. Thank you for shopping with us!

    • Is this wifi ready? And what is a DVI?

      • Hello gunslinger, this does not have wifi available. DVI stands for Digital Video Interface, which is an input for video. I hope this helps. Please let us know if you have any additional questions. Thank you for shopping with us!

    • Does this have SATA 2 or 3

      • Hello jberrier, the 1TB Hard Drive is Sata 3. Which would be the 6 Gb/s. Thanks for shopping with us! Have a great day! -Matthew P.

      • The Computer Supports Only Sata 2, the Hard drive is backwards comparable to Sata2 3 Gb/s

      Read more Read less
    • Does the OS disk come with? If not, why not?

      • Thank you for your question, whatareyouthinkin. The OS disk does not come with the Dell OptiPlex 780 3.0GHz 4GB 1TB Win 7 Mini Tower Computer (Refurbished), there is a recovery partition on the hard drive. Microsoft has stopped making recovery disks. Have a great day.

    • Four slots, okay but what it the maximum memory?

      • Hi vytautas, the maximum memory is 8GB for this Dell OptiPlex 780 3.0GHz 4GB 1TB Win 7 Mini Tower Computer (Refurbished). Thank you for shopping with us!

    • Does this system have any expansion slots on the motherboard for graphics adapters or audio adapters?

      • Hello johnv56, the Dell OptiPlex 780 3.0GHz 4GB 1TB Win 7 Mini Tower Computer (Refurbished) has expansion slots on the motherboard for graphics adapters or audio adapters. Please feel free to contact us again with any further questions. Thank you for shopping with us!

    • Does this PC come exactly as pictured? ie: The DVI port which would be a deciding factor for me.

      • Hi landon9000, The Dell OptiPlex 780 3.0GHz 4GB 1TB Win 7 Mini Tower Computer (Refurbished) comes as shown. Please feel free to contact us again with any further questions. Thank you for shopping with us!

      • No it does not!!! I just received this computer. It did not have the floppy drive and the DVI port as in the pictures. Previous Q&A stated that computer was as pictured. I'm not happy.

      Read more Read less
    • Is this computer ready to plug in and work?

      • Hello taij, The Dell OptiPlex 780 3.0GHz 4GB 1TB Win 7 Mini Tower Computer (Refurbished) is ready to plug in and work, maybe just a few update. Please feel free to contact us again with any further questions. Thank you for shopping with us!

    • This unit has 4 GB of memory, w/ 4 Dimm memory slots. Are all 4 memory slots in use (4x1GB) or are two of the slots open (2x2GB) for additional memory expansion?

      • Hello scwdcman, Yes,it has two of the slots for additional memory expansion. Thank you for shopping with us.

    Shopping Tips & Inspiration

    Shipping & Returns


    Usually leaves our warehouse in 1-2 business days. *

    Standard Return Policy for Electronics:

    The items must arrive at our warehouse within 30 days of purchase. You must return items in their original condition to qualify for a full refund. We will issue a partial refund of up to 70 percent if returned items have been opened, used, or returned late. More Details


    This item cannot be shipped to Alaska or Hawaii. More details

    Shipping Information:

    Our standard shipping method is ground shipping. We also offer expedited shipping for most items. Your final shipping cost and estimated delivery timeframe will be available at checkout.
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    For your protection, all orders are screened for security purposes. If your order is selected for review, our Loss Prevention Team may contact you by phone or email. There may be a two business day delay to process your order.

    ** Most Oversize orders are delivered within 1-4 weeks. Some orders may take 6 weeks to be delivered.