Best Dell Desktops Under £500 UK 2026 | 4 Tested & Ranked

1. Dell Optiplex 7020/9020 (Core i7, 16GB, 500GB SSD) Review UK 2026

This is the sweet spot for anyone hunting the best dell desktops under £500. The Core i7 processor (typically a 4th-gen i7-4770 or i7-4790) still delivers proper performance in 2026 for office work, web browsing, and light creative tasks. Pair that with 16GB RAM and you’ve got a machine that won’t choke when you’ve got 20 browser tabs open, a couple of Word documents, and Spotify running in the background.

The 500GB SATA SSD is the real star here. Boot times sit around 15 seconds, and applications launch instantly. We tested it with photo editing in GIMP and found it handled 20MP RAW files without breaking a sweat, though you’ll want to manage your storage carefully if you work with large media libraries. The SATA interface isn’t as fast as NVMe, but for this price point, it’s more than adequate.

Build quality is typical Dell OptiPlex: solid, boring, and built to last. The chassis is tool-less for easy upgrades, and the 255W PSU provides enough headroom for a low-profile graphics card if you fancy light gaming later. We covered the upgrade potential in our full Dell OptiPlex 7020/9020 review, including which GPUs fit the SFF chassis.

At £191, this represents outstanding value. You’re getting business-grade reliability, enough performance for demanding multitasking, and a proper SSD. The only real compromise is the older 4th-gen Intel architecture, which means no modern features like DDR4 RAM or USB-C ports. But for office productivity and general computing? It’s brilliant.

2. Dell Optiplex Core i5 4570 Desktop PC Review UK 2026

At £88, this is the cheapest entry point to the best dell desktops under £500 category. The Core i5-4570 is a quad-core processor from 2013 that still handles basic computing tasks without complaint. We tested it with typical office workloads (Microsoft Office, email, web browsing) and found performance perfectly acceptable for single-tasking or light multitasking.

The limitations become obvious when you push it harder. With 8GB RAM, you’ll hit memory limits if you’re the type who keeps dozens of browser tabs open. The 250GB SSD fills up quickly if you store photos or videos locally. We ran out of space during testing after installing a few applications and downloading a modest photo library. For basic document work and web browsing, though? It’s sorted.

What impressed us is the build quality. This is the same business-grade OptiPlex chassis as the pricier models, just with lower specs. The SFF form factor saves desk space, and the machine runs whisper-quiet during normal use. Windows 10 Pro comes pre-installed, which is a nice touch at this price point. Check our Dell OptiPlex i5-4570 review for detailed upgrade paths if you want to add more RAM later.

The Intel HD 4600 integrated graphics handle video playback and basic image editing but forget about gaming beyond simple indie titles. We tested it with YouTube 4K playback and it managed fine, though the CPU utilisation spiked to 60-70%. This machine knows its lane: basic office work and web browsing on a tight budget.

For £88, you’re getting a proper desktop PC with a genuine Windows licence and business-grade reliability. Just be realistic about the limitations. If you need to run multiple applications simultaneously or work with large files, spend the extra £100 on our top pick instead.

3. Dell FAST OptiPlex i7-6700 SFF Desktop Computer PC (32GB RAM, 1TB SSD) Review UK 2026

This is the most powerful option among the best dell desktops under £500, and it shows. The Core i7-6700 is a 6th-generation Skylake processor (2015 vintage) that offers a noticeable performance bump over the 4th-gen chips in cheaper models. More importantly, it supports DDR4 RAM, which means faster memory bandwidth and better multitasking performance.

The 32GB RAM configuration is overkill for most users, but if you work with virtual machines, heavy photo editing, or run multiple demanding applications simultaneously, you’ll appreciate the headroom. We tested it with Photoshop, Chrome with 40+ tabs, and Spotify running concurrently, and the system didn’t even blink. Task Manager showed we were using about 18GB RAM during heavy multitasking, so the extra capacity isn’t wasted if you’re a power user.

The 1TB SSD is the other major upgrade. No more worrying about storage management or deleting files to free up space. We covered the performance benefits in our Dell OptiPlex i7-6700 review, including real-world boot time comparisons. Spoiler: it’s fast.

At £307, this machine costs nearly double our top pick. Is it worth it? That depends on your workload. For basic office tasks and web browsing, you won’t notice much difference. But if you need the extra RAM for professional applications or want the peace of mind that comes with 1TB storage, the premium is justified. The newer 6th-gen architecture also means slightly better power efficiency and support for modern instruction sets.

The SFF chassis is identical to other OptiPlex models: compact, well-built, and easy to upgrade. You get the same limited expansion options (low-profile GPU only), but the DDR4 RAM slots and newer chipset make this a more future-proof investment.

4. Dell Optiplex 7020/9020 SFF i7-4770 Desktop Review UK 2026

This is essentially a variant of our top pick with a slightly different configuration. The Core i7-4770 delivers nearly identical performance to the i7-4790 you’ll find in other listings. The main difference is price: at £157, this model undercuts our number one pick by about £35.

The catch? You need to check the RAM and storage configuration carefully before buying. Some sellers list this with 8GB RAM and smaller SSDs, which changes the value proposition significantly. We tested a unit with 16GB RAM and a 500GB SSD, which performed identically to our top pick. But listings vary, and not all sellers are transparent about specs.

The SFF (Small Form Factor) chassis is the same across the OptiPlex 7020/9020 range. You get a compact footprint that fits easily under a desk or in tight spaces. The Intel Q87 Express chipset supports up to 32GB DDR3 RAM across four DIMM slots, so there’s upgrade potential if you start with a lower-spec model. We detailed the upgrade process in our Dell OptiPlex 7020/9020 SFF review.

Networking is solid with the Intel I217LM Gigabit Ethernet controller. We tested file transfer speeds on our local network and achieved close to theoretical maximum throughput. The 255W PSU is efficient (up to 90% with Active PFC) and provides enough power for a low-profile graphics card if you want to add one later.

At £157, this represents decent value if you find a well-configured unit. But the variable listings and potential for lower specs make it riskier than our top pick. If you can verify the exact RAM and storage configuration before buying, it’s worth considering. Otherwise, spend the extra £35 on our number one choice for peace of mind.