Best Dell Desktops UK 2026 | 4 Tested & Ranked

1. Dell Optiplex 7020/9020 (Core i7, 16GB, 500GB SSD)

This is the best Dell desktop for most UK buyers in 2026. The Core i7-4770 processor still punches well above its age, handling multiple browser tabs, video conferencing, and productivity software without breaking a sweat. Combined with 16GB of RAM, you’ve got enough headroom for proper multitasking without the system grinding to a halt when you’ve got Outlook, Chrome with 20 tabs, and a few PDFs open simultaneously.

The 500GB SATA SSD is the real star here. Boot times sit around 15 seconds, and applications launch instantly. It’s not the fastest NVMe drive, but for a refurbished system at this price point, it’s more than adequate. The capacity strikes a good balance too. You can store a decent amount of documents, photos, and applications without constantly juggling storage space.

Dell’s OptiPlex build quality shines through. The chassis feels solid, the internal layout is sensible for future upgrades, and the cooling is whisper-quiet during normal use. I ran stress tests for extended periods, and the system maintained comfortable temperatures without the fans screaming like a jet engine. As we covered in our full Dell Optiplex 7020/9020 review, the upgradeability is excellent with easy access to RAM slots and drive bays.

For home offices and small businesses, this configuration hits the sweet spot. It’s powerful enough for demanding office work, affordable enough to buy multiple units, and reliable enough that you won’t be constantly troubleshooting issues. The Windows 10 Pro licence is a nice bonus, offering better security features than Home editions.

Editor's pick: Dell FAST Optiplex 7020/9020 SFF Desktop Computer PC - Intel Core i7 4th Gen (4 cores Upto 3.90GHz), 16GB RAM, 500GB SSD Storage, 300Mbps USB WiFi, W11 Pro + 23" Monitor (Renewed)

2. Dell Optiplex 7020/9020 SFF i7-4770 Desktop

The small form factor version of Dell’s OptiPlex line offers the same Core i7-4770 performance in a more compact package. If desk space is at a premium, this is one of the best Dell desktops for tight workspaces. The dimensions come in at just 94mm wide, making it easy to tuck under a monitor or fit into cramped home office setups.

What sets this apart from the standard tower is the upgradeability. The Intel Q87 Express chipset supports up to 32GB of DDR3-1600 RAM across four DIMM slots, giving you plenty of room to grow. The system ships with various RAM configurations, but knowing you can max it out later provides peace of mind. Storage options include support for both HDDs and SSDs, with RAID 0/1 configurations if you need redundancy or speed.

The 255W power supply is surprisingly efficient, achieving up to 90% efficiency with Active PFC. This keeps running costs down and reduces heat output. Dell engineered the cooling well too. Despite the compact chassis, airflow remains adequate, and the system stays reasonably quiet during typical office workloads. Push it hard, and the fans spin up, but they’re not obnoxiously loud.

Expansion is limited compared to full towers, but you get one miniPCIe slot and support for low-profile GPUs if you want to add basic graphics capabilities. The Intel I217LM Gigabit Ethernet provides reliable wired networking, which is crucial for office environments. Our Dell Optiplex SFF review goes deeper into the expansion options and real-world performance.

3. Dell FAST OptiPlex i7-6700 SFF Desktop Computer PC (32GB RAM, 1TB SSD)

The step up to a 6th generation i7-6700 processor brings modest improvements over 4th gen chips, but the real story here is the massive 32GB of DDR4 RAM. If you regularly work with large spreadsheets, run virtual machines, or keep dozens of applications open simultaneously, this is among the best Dell desktops for heavy multitasking workloads.

DDR4 memory offers better power efficiency and slightly faster speeds compared to the DDR3 in older models. In practice, you won’t notice huge differences in everyday tasks, but the 32GB capacity means you’ll never hit RAM bottlenecks. I tested this with 40+ Chrome tabs, multiple Office applications, Photoshop, and several PDFs open. The system didn’t flinch.

The 1TB SSD is generous, providing ample space for large file libraries, photo collections, or local backups. For users tired of managing storage or constantly deleting files to free space, this capacity removes that headache entirely. The SSD performance is solid, though again, it’s SATA rather than NVMe, so you won’t see bleeding-edge transfer speeds.

Here’s the thing: at over £300, this system enters territory where you need to carefully consider value. The performance gains over cheaper i7-4770 models are incremental for typical office work. You’re paying a premium for the extra RAM and storage, which makes sense if you actually need those specs. If you’re just browsing the web and writing emails, you’re overspending. Check our OptiPlex i7-6700 review for detailed performance benchmarks.

4. Dell Optiplex Core i5 4570 Desktop PC

At under £90, this is the best Dell desktop for budget-conscious buyers who need a functional system for basic tasks. The Core i5-4570 runs at 3.2GHz (3.6GHz turbo), which is perfectly adequate for web browsing, email, document editing, and video calls. You won’t be rendering 4K video or running demanding applications, but for typical home office work, it’s sorted.

The 8GB of DDR3 RAM is the minimum I’d recommend in 2026. It handles light multitasking reasonably well, though you’ll notice slowdowns if you’re the type to keep 30 browser tabs open while running multiple applications. For most users sticking to a few programmes at once, it’s fine. The good news is RAM is cheap and easy to upgrade if you find yourself hitting limits.

The 250GB SSD is the weak point. It’s enough for Windows, your applications, and a modest collection of documents, but you’ll need to be mindful of storage management. Large photo libraries, video files, or extensive software collections will fill it quickly. Consider adding an external drive or upgrading to a larger SSD down the line. Boot times and application loading remain snappy thanks to the SSD, which is the most important thing.

Build quality matches the pricier OptiPlex models. Dell used the same reliable chassis design, so you get a solid, well-cooled system that’s easy to open and upgrade. The Intel HD 4600 integrated graphics handle desktop tasks and video playback without issues. Don’t expect gaming performance, but YouTube, Netflix, and basic photo editing work fine. We tested this extensively in our Dell Optiplex i5 4570 review, and it’s brilliant value for money.

For students, home users on tight budgets, or businesses needing multiple basic workstations, this represents exceptional value. You’re getting a proper desktop computer with Windows 10 Pro for less than the cost of a budget laptop. Yes, it’s older hardware, but it’s reliable older hardware that does the job.