Question 1

What is the difference between DVI-D and DVI-I cables?

Accepted Answer

DVI-D carries a digital signal only, while DVI-I supports both digital and analogue signals. In practice, DVI-D is what you need for connecting a modern flat-panel monitor to a PC or graphics card — it's cleaner, more common, and slightly cheaper. DVI-I is useful when you need to use a DVI-to-VGA adapter, as the analogue pins are required for that conversion. Physically, DVI-I has four extra pins surrounding the flat blade; a DVI-D cable will not plug into a DVI-I socket, though the reverse works fine.

Question 2

Do I need a Dual Link cable for a 1440p or 4K monitor?

Accepted Answer

Yes — for 1440p (2560×1440) you need a Dual Link DVI-D cable; standard 4K is not supported over DVI at all. Single Link DVI maxes out at 1920×1200 at 60Hz. Dual Link doubles the bandwidth to 9.9 Gbps, which covers 2560×1600 at 60Hz — enough for 1440p. True 4K (3840×2160) exceeds what DVI can handle regardless of link type; for that you'll need HDMI or DisplayPort. If your 1440p monitor isn't displaying at native resolution, a Single Link cable is the most likely culprit.

Question 3

How long can a DVI cable be before the signal degrades?

Accepted Answer

Up to 5 metres, a quality passive DVI cable will perform reliably without signal degradation; beyond that, shielding quality becomes critical. At 7.5m and 10m, look for cables with double shielding — braided copper over foil — from brands like Lindy or Vivolink. Beyond 15 metres, a passive cable alone is risky; an active DVI signal booster or extender is the more reliable solution. Cheap unbranded cables at longer lengths are a false economy — subtle image artefacts or intermittent signal loss are common.

Question 4

Are gold-plated DVI connectors actually worth it?

Accepted Answer

Gold-plated contacts are genuinely useful, though not for the reason most marketing implies. Gold doesn't conduct significantly better than copper, but it resists oxidation far more effectively. In a humid environment, a rack installation, or any cable that gets unplugged and replugged regularly, nickel or bare copper contacts will corrode over time — causing intermittent signal issues that are frustrating to diagnose. For a cable that stays plugged in permanently on a home desk, the difference is minimal. For professional or semi-permanent installations, it's worth having.

Question 5

Can I use a DVI cable with an HDMI monitor or vice versa?

Accepted Answer

Yes, with a passive adapter or adapter cable — but only for the digital signal, and with limitations. DVI-D and HDMI both carry digital video signals that are electrically compatible, so a DVI-to-HDMI adapter works without any active conversion. However, HDMI also carries audio, which DVI does not — so you'll lose audio over that connection. HDCP compatibility is also required on both ends for protected content. These adapters are inexpensive and widely available; check our cable gender changers category for options.

Question 6

Which DVI cable brands should I avoid buying cheap from?

Accepted Answer

Unbranded or very cheap no-name DVI cables are worth avoiding for anything beyond a basic 1m desktop run. The risk isn't that they won't work at all — most will — but that quality control is inconsistent. Poorly crimped connectors, inadequate shielding, and substandard conductors are common in the lowest price tier. For budget-conscious buyers, kenable and StarTech.com both offer genuinely affordable cables with consistent build quality. Spending a little more on a known brand from 12 £ upwards eliminates most of the reliability risk.

Question 7

Is DVI still worth buying in 2026, or should I switch to DisplayPort or HDMI?

Accepted Answer

DVI is worth buying if your existing hardware has DVI ports — replacing working monitors or graphics cards purely to switch connector type rarely makes financial sense. That said, if you're building a new system or upgrading a monitor, DisplayPort or HDMI is the better long-term choice: higher bandwidth, audio support, and broader compatibility with modern displays. DVI tops out at 2560×1600 and carries no audio. For legacy setups, professional AV equipment, and older workstations, DVI cables remain a practical and cost-effective solution.

DVI Cables Price Comparison

Lindy 3m DVI-D Dual Link Cable, Anthra Line

Lindy 7.5m DVI-D Dual Link Cable, Anthra Line

Lindy 15m DVI-D Dual Link Cable, Anthra Line

ProXtend DVI-D 18+1 Cable 3M

ProXtend DVI-D 18+1 Cable 2M

ProXtend DVI-D 18+1 Cable 1M

ProXtend DVI-D 18+1 Cable 0.5M

DVI Cables Price Comparison