How Old Is Too Old? We Put Aging Routers Through Their Paces to Find Out When You Actually Need to Upgrade

There's a quiet pressure in the tech world to keep upgrading. New WiFi standard drops, reviewers get excited, and suddenly your perfectly functional router feels ancient. But routers aren't smartphones — they don't have planned obsolescence baked into a two-year contract cycle. So when does your router actually become a problem?

We wanted a real answer, not a manufacturer's marketing timeline. So we pulled hardware ranging from 2018 to 2024 off the shelf, ran them through a consistent battery of tests, and looked hard at the security patch histories of major brands. What we found won't make router companies happy — but it should help you make a smarter buying decision.

The Hardware We Tested

Our lineup spanned three generations of WiFi technology. On the older end: a 2018-era WiFi 5 (802.11ac) Netgear Nighthawk R7000 and an ASUS RT-AC88U from the same era. In the middle: a 2021 WiFi 6 TP-Link Archer AX6000. On the current end: a 2023 WiFi 6E Eero Pro 6E and a 2024 WiFi 7 TP-Link Archer BE800.

All devices were tested on the same 1 Gbps fiber connection, in the same home, with the same client devices. We measured throughput at close range and at distance, connection stability over 72-hour periods, and how each router handled a saturated network with 20+ connected devices.

Raw Performance: The Gap Is Real, But Context Matters

Let's start with the honest news for people holding onto older hardware: yes, there is a meaningful performance gap between a 2018 WiFi 5 router and a modern WiFi 6 or 6E device. At close range on a single device, that gap is minimal — the Nighthawk R7000 still pushed around 400–500 Mbps consistently, which is more than enough for most households on a 300–500 Mbps ISP plan.

Where older hardware falls apart is under load. With 20+ devices connected simultaneously — smart home gadgets, streaming TVs, phones, laptops — the 2018 routers showed noticeably higher latency spikes and more dropped connections than the newer hardware. The WiFi 5 routers struggled with MU-MIMO efficiency in a way that modern WiFi 6 devices handle gracefully. If you have a growing smart home, that matters.

The jump from WiFi 6 to WiFi 6E or WiFi 7, however, is much less dramatic for most people. Unless you have client devices that support those newer standards and a home large enough to benefit from the 6 GHz band's reduced congestion, the 2021 WiFi 6 router performed nearly identically to the 2023 and 2024 hardware in our real-world tests. The bleeding edge isn't always worth bleeding for.

Security: The Clock Is Ticking Whether You Notice or Not

This is where the conversation gets serious, and where we think most upgrade discussions don't spend enough time.

We audited the firmware update histories of every router brand in our test. What we found was inconsistent and, frankly, concerning for older hardware owners. Most major manufacturers — ASUS, Netgear, TP-Link — support their routers with security patches for roughly 3 to 5 years from the original release date. After that, updates slow to a trickle and eventually stop entirely.

The Netgear R7000, for example, received its last firmware update in 2022. That's a router still actively sold on eBay and Facebook Marketplace, sitting on home networks across the country, with known vulnerabilities that will never be patched. That's not a hypothetical risk — the FBI has previously issued advisories about compromised home routers being used in botnets, and outdated firmware is a primary attack vector.

If your router is no longer receiving security updates, that's a concrete reason to replace it — not because your speeds are suffering, but because your network perimeter has a hole in it that isn't getting fixed.

The Manufacturer Replacement Cycle: Justified or Just Revenue?

We asked ourselves whether the 2-to-3-year replacement cycle some brands implicitly encourage is genuinely necessary. Short answer: not for performance reasons alone.

A well-maintained WiFi 6 router purchased in 2020 or 2021 still handles modern household demands competently. The hardware hasn't degraded in any meaningful way — routers don't have moving parts, and the radios don't wear out under normal use. We saw no evidence of throughput degradation on any of our test devices compared to their original spec sheets, assuming firmware was current.

The replacement cycle pressure is largely commercial. New standards create marketing opportunities. That doesn't mean WiFi 7 is worthless — for heavy users, large homes, or those with many high-bandwidth devices, the improvements are real. But for a typical American household using a mix of streaming, remote work, and casual browsing, a 3-year-old WiFi 6 router is not holding you back.

A Practical Framework for When to Actually Upgrade

Rather than giving you a blanket timeline, here's how we'd think about it:

Replace immediately if: Your router is no longer receiving firmware or security updates. This is non-negotiable from a security standpoint. Check your manufacturer's support page.

Replace soon if: You've added significantly more devices to your network in the past year or two and you're noticing slowdowns, drops, or coverage gaps that you weren't experiencing before. WiFi 5 hardware, in particular, starts showing strain at higher device counts.

Hold off if: Your router is on WiFi 6 or newer, still receiving updates, and your day-to-day experience is solid. Chasing WiFi 7 right now is largely a future-proofing exercise, not a current performance necessity for most households.

Consider instead: Before buying a new router, check whether your ISP-provided gateway is the actual bottleneck. Many Americans are running ISP-supplied combo modem-routers that cap performance well before their own router becomes the issue.

The Verdict

Router manufacturers benefit from shorter replacement cycles. That's just business. But the data we collected tells a more measured story: performance-wise, most routers have a comfortable 5-to-7-year useful life. The genuine forcing function is security support, not speed.

Know when your router's firmware support ends. Set a calendar reminder if you have to. When that date passes without a clear successor update schedule, that's your real signal to shop. Everything else is optional.