千兆宽带依然毫无意义。
There's still no point in gigabit broadband

原始链接: https://shkspr.mobi/blog/2026/06/theres-still-no-point-in-gigabit-broadband/

作者最近升级到了 1Gbps 光纤宽带,每月费用仅需 30 英镑,价格十分划算。尽管技术上实现了跨越,但作者发现对于家庭使用而言,这样的网速显得严重过剩。 受限于 1Gbps 以太网端口、WiFi 物理性能以及外围硬件的局限,用户几乎不可能跑满全部带宽。4K 视频流媒体、游戏和远程办公通常仅需 100Mbps 以内的网速,即便是下载大文件或搭建个人服务器等高负荷任务,也难以支撑起如此巨大的吞吐量。尽管作者认为千兆基础设施对英国的长远发展是有益的,但仍对其目前的实用性持保留态度。除了高带宽监控备份或个人 VPN 等极少数应用场景外,该连接大部分时间都处于闲置状态。作者最终认为,虽然“更快确实更好”,但多数现代家庭对这样的网速并无实际需求,并欢迎读者提出如何才能真正“压榨”这一带宽的建议。

关于千兆宽带是否必要的 Hacker News 讨论,凸显了人们在“普通用户的消费需求”与“现代数字生活习惯”之间的分歧。 批评千兆套餐的人认为,普通家庭的实际利用率很低,而且真正决定网络“快感”的是延迟而非原始速度。许多人指出,服务器(如索尼的服务器)极少能跑满高带宽,且互联网服务提供商(ISP)的超额预订往往会导致性能不稳定。 相反,支持者则强调高速“突发”容量带来的好处。对于游戏玩家和专业人士来说,能在几分钟而非几小时内下载超过 100GB 的文件或游戏补丁,是生活质量的显著提升。对于家庭用户而言,高带宽也能确保在高峰时段避免视频会议出现卡顿。 归根结底,虽然轻度用户可能觉得千兆速度没必要,但重度用户和多人家庭认为,减少更新和大型下载的“等待时间”所带来的实际价值,足以抵消其高昂的费用,无论他们是否 24 小时都需要这种带宽。
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原文

Six years ago, I nearly got my ISP to upgrade our fibre connection to 1Gbps. As I said at the time:

This is a curmudgeonly post which is going to look ridiculously outdated in a few years.

What's the point of Gigabit broadband?

Well, it's a few years later and Virgin Media have just given me their Gig1 package for £30 per month. Nice! With all the inflation related price rises, it's great to get more for less.

But I'm still left wondering if this is massive overkill.

What can you actually do with their promised 1,130Mbps?

Online video calling isn't that intensive. All the 4K streaming services recommend 25Mbps - so I guess I could ask 40 friends to come round and stream simultaneously. Downloading Linux ISOs is pretty speedy on a connection half as fast - and is usually limited by the upstream. Same for game updates.

I've wired most of my house with Cat6 Ethernet - but most of my switches and ports are 1G rather than 2.5G, so the max bandwith isn't likely to get to any single device. The best I've got directly is around 940Mbps which is about what I'd expect from a gigabit port.

All my WiFi devices are limited by the reality of radio physics in a noisy environment - so about 450Mbps when close to the router. Some of my rooms are hard to reach, so they have HomePlugs beaming data across our electrical wiring. Again, physics dictates a fairly modest speed there.

I've got a VR headset - but haven't found anything that taxes its download speed. Especially given that it uses WiFi.

My 4K Fire Stick has a wired Ethernet connection. Its built in speed test maxes out around 80Mbps. In fact, most of the online speed tests I tried couldn't saturate the pipe - tapping out at around 700Mbps.

Some AI models and training sets are multiple terrabytes. But are they really likely to be downloaded multiple times per day? If they are, is there a real difference in waiting 7 minutes rather than 3.5?

Everyone jokes about website bloat, but the reality is much more prosaic. Latency to a CDN is a bigger contributor to the perceived slowness than the limits of a home connection.

So what about upload speed. The Internet is an inherently sucky medium; people download far more than they upload. In this case, upload is limited to "only" 110Mbps. Even if both of the people in this house were full-time Twitch streamers, I doubt we'd saturate that.

It's 2026 and I can barely recommend 500Mbps broadband. For most domestic uses, including working from home, it's rare to need more than 100Mbps. Sure, faster is always nicer and cheaper is always preferable, but what am I actually going to do with this speed?

Back in 2012, it was reasoned that the fastest legal use of the Internet was 2.5Mbps. We've blown past that limit thanks to video streaming and calling. But, on the assumption I'm not going to be using my connection to mirror Linux ISOs, what can I do with it?

I guess I can run a personal VPN from home. Handy if I want to stream geolocked content when I'm out of the country. But, again, 1Gbps is overkill for that - especially as I'm likely to be either on a mobile hotspot or hotel WiFi.

I could livestream all my security cameras 24/7 to a secure back-up vault. That isn't going to touch the sides of my upload speed.

Perhaps I could self-host all my stuff? Again, for personal use I'm limited to whatever speed my laptop or phone can get on a public connection. Given the risk of botnets, DDoS, hacking & the like, I'm not sure I'd want much public-facing stuff on my residential IP address.

To be clear, I think it is a great thing that the UK Government is pushing ISPs to deploy gigabit everywhere. It isn't at all useful now, but will probably be crucial in the future.

So if you have any ideas for what I can do to saturate this connection, please drop a comment in the box.

In the meantime, if you join Virgin Media using this link we will both get £50 bill credit.

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